LANDCARE IN FOCUS 2017 ANNUAL SPECIAL PUBLICATION FARMING INNOVATION AND BEST PRACTICE LAND MANAGEMENT 2 Fairfax Media Special Publication Innovation the key to productivity BY LUKE HARTSUYKER ASSISTANT TO THE DEPUTY PRIME MINISTER THIS is an exciting time for farming. Innovative use of new technologies, including digital technology and robotics, has the potential to transform our farm businesses and land management practices. We all know that innovation is a key driver for productivity and profitability in agriculture, but what many people might not realise is that innovation in the agriculture sector also delivers significant environmental and sustainability benefits. In fact, as Landcarers know, long-term productivity and profitability are inextricably linked with sustainable land management practices, and how we manage our soils, water and vegetation. For example, precision agriculture has the potential to deliver significant benefits not only for agricultural productivity and profitability, but also supports sustainable farming practices. Precision farm management tools and systems can provide information at the field, paddock or block level to help optimise and minimise inputs such as water, fertilisers and pesticides. This can help ensure that inputs are used efficiently, and allows for targeted management of issues such as nitrogen pollution and soil fertility. Precision agriculture can further support sustainable land management by providing information that allows farmers to match land use and land capability. This means farmers can maximise profitability in the productive parts of their farms, while conserving biodiversity and the natural resource base in less productive areas. Many Landcarers will already be familiar with the CSIRO’s exciting work in this space, including through a $1.5 million grant under the National Landcare Programme to develop an interactive system that will give farmers near real-time information about their farms. This will help farmers examine options for different crop varieties and soil inputs needed to make the most of the soil moisture available for their coming season. This government is committed to ensuring that our farmers and land managers can make the most of the opportunities presented by the digital age and new technologies. That is why, in partnership with industry, we invest heavily in rural research and development, to support the kind of innovation that keeps our soils, water and vegetation healthy, productive and sustainable. For example, Horticulture Innovation Australia has helped develop an in-field robot dubbed the Ladybird, which provides intelligence on pests, crop nutrition and forecasts—meaning growers can minimise and better target their inputs for maximum efficiency. They are also partnering with the University of Sydney as part of the Horticulture Innovation Centre for Robotics and Intelligent Systems (HICRIS)— Australia’s first horticultural robotics learning and development hub. In the dairy industry, Dairy Australia’s Fert$mart initiative is helping farmers harness information about soil condition and nutrient loads to use fertilisers more efficiently and judiciously, reducing nutrient runoff from their farms while maximising pasture growth. As a result of RD and E by the Cotton Research and Development Corporation, Australia’s cotton industry has adopted innovative water use efficiency improvements including infield moisture monitoring, field and irrigation system design, scheduling technology, soil health improvements and other irrigation techniques. Over the past 10 years, these innovations have allowed the industry to increase water use efficiency by 40 percent and transform to grow more than three times the world average yield per hectare. Of course, the opportunities presented by new technologies and ‘big data’ are impossible to realise on the land without the digital infrastructure needed to unlock their full potential. The government is investing $29.5 billion towards delivering Australia’s first national broadband network to all Australians, including those on the land, and we are also improving mobile phone and wireless broadband coverage and competition in regional Australia through the Mobile Black Spot Programme. Luke Hartsuyker MP. We will continue to work with you to ensure that Australia’s farmers and others who care for our land can unlock the benefits of innovative new ideas and technologies, and realise the opportunities presented by this exciting digital age. Important role in sustainable land management BY LANDCARE AUSTRALIA CEO, TESSA JAKSZEWICZ Landcare Australia CEO, Tessa Jakszewicz. OUR 2017 annual special publication has arrived, and I hope you’ll find this technical supplement a useful and interesting addition to our quarterly Landcare in Focus publication. This year’s theme is ‘Farming Innovation and Best Practice Land Management’. Landcare plays an important role in both facilitating innovation, as well as encouraging adoption across farms. Landcare Australia supports this rapid adoption of farming innovation through our promotional and educational activities, such as the biennial National Landcare Conference and Awards, and publications such as this one. Australian farmers are continuing to adapt to a changing and challenging environment, taking into consideration seasonal variability and consumer and market-led demands. Landcarers have an important role in helping to share information on successful innovations, coming together and exchanging knowledge so that all can benefit from these new ideas that address farming challenges and land management. Many Australian farmers recognise the importance of integrating biodiversity and sound environmental management into their production areas, and Landcare groups are leading the way in many areas. In this special edition you’ll hear from Landcare groups, researchers from organisations including CSIRO, the Australian government, industry leaders, forward-thinkers, Indigenous groups, and others. You’ll learn about new technology being adapted into land management practices, innovation in weed control, soil health and much more. I would also like to thank the Australian government Department of Agriculture and Water Resources for their continued financial support of Landcare in Focus. If you have any feedback on this or any edition, please email [email protected]. Fairfax Media Special Publication 3 Innovative Landcarer helps others adopt sustainable farms BY CHRISTOPHER GILLIES SINCE winning the 2014 Bob Hawke Landcare Australia Award, Colin Seis has continued his work in regenerating and sustaining farming systems. Invited by Landcare groups across the country, he has held workshops to teach farmers and land manager the techniques he has adopted to successfully repair and sustain the land. “It’s been a great opportunity to show farmers how they can implement principles that work with the environment, and not against it,” Colin said. A key part of Colin’s work is the development of a cropping system that takes advantage of native pastures growth period with winter crops. The system involves sowing of a single crop species, like wheat, into perennial grassland or pastures. Colin said his pasture cropping system works because native pastures grow during summer months and go dormant over winter. This creates a system for livestock to graze over the summer, and as the months cool and grass goes dormant, the winter crop grows and is harvested before summer returns. Colin has also travelled overseas to provide workshops. To date, more than 1.2 million hectares of farmland are adopting his techniques around the world. He said more farmers are adopting a sustainable approach, because they could see the damage done by using techniques that didn’t fit with the Australian environment and the cost of chemicals and inputs was becoming too expensive. Colin believes farmers looking at ways to repair their soils and adopt a sustainable approach should start from grassroots and let nature take the lead. “Plants - plant lots of perennial plants,” Colin said. Colin’s work is the development of a cropping system that takes advantage of natural pasture growth. “Doing this repairs the soil, that in turns cycles nutrients, and are taken up by crops and pastures.” Colin is working on pasture cropping further by using multiple species. This ‘multi species pasture cropping’ uses plants that grow good quality forage, have a range of different root systems and will add organic matter to the soil. 2014 Bob Hawke Landcare Australia Award winner Colin Seis is continuing his work in farm sustainability. Later this year Colin will be releasing his book ‘Regeneration’ that covers his land management techniques. Scanning beyond the horizon THINKING about the forces likely to shape the future helps us make decisions for our industries to prosper as the world around us changes. Recent analysis by the Australian Bureau for Agricultural and Resource Economics and Sciences (ABARES) found that five key factors will shape the future of Australia’s farming sector: markets, technology, society’s expectations, climate change and structural adjustment. Markets for agricultural products will change as demand increases, particularly in the developed world, and as new competitors emerge. More trade will mean the risk of biosecurity incursions will grow, and we will need to adapt accordingly. Domestically, production will be affected by increased competition for land, water, labour and capital. New technologies will transform the nature of farming. Improved genetics, machinery and chemicals will be critical, and the importance of tools for collecting and analysing data will grow. Changing social views around issues such as animal welfare, use of chemicals and genetic modification will continue to drive changes in production practices and technology. Climate change will alter the environment faced by Australian farmers and this will lead to changes in how and where agriculture happens. Climate change may also heighten the risk of pests and diseases entering Australia which will affect how we manage biosecurity. The structure of Australian agriculture is predicted to continue changing in the direction of fewer and larger farms. Nonetheless, small and medium-sized farms will remain common in many regions, just as they are now. So, what do these trends mean for Australian farmers and governments? “For farmers, the key will be to keep improving productivity, since this is the main way they will remain competitive in global markets,” deputy secretary of the Department of Agriculture and Water Resources, Lyn O’Connell said. “This will mean adopting new technologies, changing practices and learning new skills. “Governments can assist the sector by facilitating incremental productivity improvement, most importantly by investing in research and development and ensuring that regulation creates as few restrictions and costs as possible, and by maintaining a strong biosecurity system. “Our department will continue to track trends in the agriculture sector and will make its predictions available to the agricultural industry through articles, such as this story, seminars and panel discussions,” she said. Smart biosecurity investment makes good economic sense THE famous adage ‘prevention is better than cure’ is a cornerstone mantra when it comes to biosecurity. Not only is this approach far more cost effective for the agricultural industry and broader community, it enhances this country’s reputation as a clean, green exporter of agricultural produce. This tried-and-true approach was enhanced by two important biosecurity initiatives announced by the Australian Government recently. Late last year, the Australian Government invested $500,000 in proactive Foot and Mouth Disease (FMD) training in Nepal – a country where FMD is endemic – and a further $100,000 for better brucellosis testing. “A large outbreak of FMD is estimated to cost Australia more than $50 billion over 10 years,” Deputy Prime Minister and Minister for Agriculture and Water Resources, Barnaby Joyce, said. “Australia has an internationally recognised capability to deal quickly and effectively with emergency animal disease outbreaks. “Training industry members in Nepal is vitally important to equip participants with the skills and experience to recognise and report FMD symptoms and ensure we can act as quickly as possible should the need ever arise in this country,” he said. Australia has been free from bovine brucellosis – caused by Bovine Brucella abortus – since 1989. As a result, the Australian livestock industry has benefited from the eradication of B. abortus through increased production yields as well as the opening of export market opportunities into countries such as Indonesia. “Australia has been free from Brucella abortus for over two decades, which is essential to negotiations for our livestock exports,” Mr Joyce said. The $100,000 will go to the CSIRO’s Australian Animal Health Laboratory to develop diagnostic tests that can better differentiate between Brucella abortus and Brucella suis – the latter being present in some feral pig populations in Queensland and northern NSW. “Development of better diagnostics represents a strategic investment in the system that underpins our agricultural productivity,” Mr Joyce said. “It is vital that we continue to improve our ability to understand, detect and respond to pests and diseases – such as Bovine Brucella abortus – that could hurt our farmers, rural communities, agricultural productivity and the national economy.” 4 Fairfax Media Special Publication Seaweed solves gas output FEEDING livestock algae-based foods might help Australia reduce its methane emissions. The development of algae based functional foods for reducing enteric methane emissions project, funded through the Filling the Research Gap programme and conducted by CSIRO in collaboration with Meat and Livestock Australia, showed that feeding livestock red macro-algae has the potential to maintain or increase productivity while reducing methane emissions. The project, which ran from 2012 to 2015, evaluated the potential of up to 20 different kinds of algae for their nutritive value and for their effect on reducing methane emissions in beef cattle. For species of algae that showed strong potential, the project undertook a more detailed analysis to identify the precise quantities and combinations required to achieve specific levels of methane reduction, while maintaining the efficiency of feed utilisation. Methane in the atmosphere is a potent greenhouse gas with a global warming potential 25 times that of carbon dioxide. Agriculture and waste management combined account for 62 per cent of global anthropogenic methane emissions, and ruminant enteric fermentation is responsible for 58pc of the agriculture contribution. “In Australia, contribution of methane from ruminant livestock is approaching 10pc of total greenhouse emissions,” research scientist and project leader, Dr Nigel Tomkins said. “These levels have invoked a universal effort to reduce emissions from ruminant agriculture and one of the identified processes to manage enteric methanogenesis is through feed modification.” Experiments in cattle and sheep have shown that feeding dried and ground preparations of the species red macro-algae (Asparagopsis taxiformis) reduced emissions by up to 60pc. Total feed intake was not significantly affected and in some cases actually increased. “The red algae appears to change the concentration of short-chain fatty acids in the rumen, which provides an alternative sink for hydrogen – a key element in methane production,” Dr Tomkins said. “There is potential for red algae to have a major role in reducing methane emissions across all Australian livestock industries. “However, at present, production costs are high and availability is limited. “Work is under way to develop commercially viable production systems, potentially in conjunction with marine Asparagopsis taxiformis is grown at a small scale at the Centre for Macroalgal Resources and Biotechnology JCU. CSIRO Staff and JCU PhD student Lorenna Machado prepare an experiment in vitro. aquaculture operations, which would have the added benefit of reducing pollution. “If production costs of red algae can be reduced, this practice would be profitable for many producers.” A batch culture approach in the laboratory is first used to assess the potential of algae to inhibit methane production in vitro. Native species delivering sustainable farming BY CHRISTOPHER GILLIES PLANTING green belts and using a targeted approach to spraying crops allowed cotton and grain grower Andrew Watson to substantially cut down on pesticides on his property in Boggabri, NSW. Andrew did it with the help of native birds, bats, and beneficials (insects that perform valued services like pollination and pest control) who have made a home in the property’s green belts, and in turn are feasting on insect pests in the crops. The motivation toward this shift began 25 years ago when the family noticed the erosion around the riverbanks caused by livestock and non-native willow trees, and a need to create buffer zones around the river to prevent spray drift impacting water quality. Harvester returns from a sweep through the cotton, the webs show the spiders are thriving amongst the cotton plants. To overcome these problems, Andrew’s mother and the family got involved with Landcare Australia to undertake the work needed. This included fencing off the riverbank, pulling out willow trees, creating groins to slow the flow of the river, and replanting native trees and plants along the banks. With the newly revegetated sections established, the birds, bats and beneficial insects returned to the property. The family started measuring the impact the beneficials had on insect pests. Some bat species alone eat their weight in insects every night. The appetite of the bats, and other beneficials, encouraged Andrew to research further to see how he could roll this out across the property. Adding to the revegetated sections of the river, the Watsons planted green belts around paddocks, linking up areas of remnant vegetation. This linking of the greenbelts meant the beneficials could easily move across the property, especially important for small birds that like to be near shelter to avoid large predatory birds. Creating the right environment is vital for creating the habitat needed for the beneficials to build up a strong population. In addition, planting diverse winter and summer crops meant the beneficials could move to one crop as the other came off. Proof the beneficial insects move into crops can be seen during cotton harvest, when Andrew’s harvester is covered in spider webs. Andrew said he found that a lot of his research and trialling led to outcomes he did not expect, and taught him something new. He also said it proved sustainable land management could deliver outcomes that were desirable. It encouraged him to look at farm practices that worked in with the greenbelts. The Watson family have also adopted alternative strategies to managing pests, such as using overhead irrigation to wash off the honeydew left by aphids. The honeydew cuts down the quality of the cotton, but he’s found with 10ml of rain or irrigation water, the honeydew is washed off without the need for chemical sprays. Andrew said as part of their shift to sustainable practices they have tried to use the softest pesticides (on beneficials) for the times when spraying is needed. He has also taken a targeted approach so only the sections that will have the most impact are sprayed. When combining all these practices, Andrew has virtually cut out the use of insecticide sprays on the farm. When spraying is required, it is sometimes targeted only to the field’s perimeter as some pests do not tend to move into the middle. The outcome for property has not only been better for the environment, but also for the profitability of the operation. Alongside using Bollguard (genetically modified) cotton, he has only had to spray five out of 40 fields once since 2006. Andrew said by replanting native trees and encouraging beneficial birds, bats and insects, he has been able to have a positive impact on his property and the community, thanks to the significant reduction in pesticide used. Fairfax Media Special Publication 5 Managing the fire recovery process BY THE BAROSSA IMPROVED GRAZING GROUP AN extensive monitoring program, native plant identification, and soil testing has helped producers across Eden Valley, Hutton Vale, and areas near the Barossa Valley in South Australia recover and sustainably manage native grass pastures that are critical within their livestock grazing systems. In 2014, areas of the eastern Mount Lofty Ranges, near the Barossa Valley, burned in two separate fires. The Eden Valley fire occurred in January and burned over 24,000 hectares between Eden Valley and Truro. The following December, the Hutton Vale fire burned 1,400ha east of Angaston. The majority of the areas burned were native pastures, made up of a range of species including native perennials, legumes, and other plants, which play a crucial role within the local livestock grazing system. Producers rely on these low input pastures to provide feed through the winter and spring, utilise summer rainfall, increase ground cover, and enhance local biodiversity. A community recovering from a major bushfire requires immediate and ongoing support. After the immediate response, which generally included destocking their pastures, producers needed to focus their attention on ensuring their native pastures returned to productive potential. The Barossa Improved Grazing Group (BIGG), in a project sponsored by Natural Resources Adelaide, Mount Lofty Ranges and Natural Resources SA Murray Darling Basin, helped producers monitor their pasture recovery while helping to match it to their livestock requirements. Monitoring sites were selected so that burned pasture performance could be compared side-by-side with unburned pasture. In addition, a site which had been burned twice was monitored to compare the effects on recovery. For one year after the fire, all producers rested the pastures, which resulted in a 90 per cent recovery of the native grass varieties, many of which regenerated directly from the burned plants. However, the burned areas still had significantly more bare ground than the unburned, with the burned area peaking at 23pc bare ground in March 2015, compared to 15 in the unburned area. The production was also three times lower in the burned areas compared with the unburned areas. The second year proved more difficult when it was critical to manage grazing to allow the pastures to fully recover. This was particularly important in the paddocks that were partially burned because the feed quality of the burned native grass was much higher than the unburned, due to fresh growth compared to the old unburned plants that have a mix of dead leaf and fresh leaf. When the monitoring sites were grazed, the livestock selectively grazed on the higher quality regrowth compared to unburned dry native grasses. They had to be moved out of the paddock once the burned area of the paddock reached 1000kg/DM/ ha, the benchmark set to promote recovery. Daniel Schuppan and Nicola Barnes, from Natural Resources SAMDB, monitoring pastures following the 2014 Eden Valley bushfires. Three years after the fire, the native grass composition of the pasture is comparable to the unburned monitoring sites, demonstrating the resilience of these native varieties. However, the overall pasture production in the burned areas are still one third less kilograms of dry matter per hectare. In addition, the area burned twice is producing half that of the area only burned once. These results indicate that the recovery process after fire takes much longer than the anticipated two years, and that careful grazing management involving strategic grazing to allow seed set and promote growth is critical for the restoration and continued production of native pastures. Visit www.biggroup.org.au. Mallee variable fertiliser rates under scrutiny BY THE BIRCHIP CROPPING GROUP APPLYING farm fertilisers to match crop variability can have significant environmental and economic benefits, but only when the approach is right for the season and the paddock. These were some of the take-home messages from the first year of Birchip Cropping Group (BCG) field trials examining variable rate application (VRA) of fertilisers on a commercial paddock scale in Victoria. VRA refers to the application of different rates and/or types of fertilisers according to a pre-set paddock map that outlines different zones within the paddock. The objective is to optimise economic and management outcomes by more efficiently targeting Drones are one of the new tools that are being used to examine variable rate cropping systems in the Mallee. fertiliser rates, rather than the traditional ‘blanket’ application approach. The study, funded by a Williamson Foundation Scholarship and the Telematics Trust, used replicated test strips to assess the performance of an existing VRA system. This involved different fertiliser treatments being applied in strips (about one kilometre long) within a wheat paddock. The trial then compared the performance of the crop when grown with a fixed or variable rates of fertiliser, or with no fertiliser, taking into consideration the cost of each practice. A paddock-scale approach was used to keep the research practically relevant to growers. The methodology also allowed researchers to explore and demonstrate the value of modern precision agriculture (PA) technologies such as drones to both farmers and agricultural researchers. BCG researcher Cameron Taylor said although VRA had been around for a while, and had proven benefits in the right locations, it was yet to achieve widespread adoption. “Many growers are interested in VRA, but are held back by uncertainty around how to effectively set up their zones and rates,” Cameron said. “Similarly, modern technologies such as drones could have great potential for broadacre agriculture, but exactly what they can do, how well it works and how much it costs, is not widely understood.” By comparing neighbouring test strips with zero and fixed rates of fertiliser, researchers were able to assess how well the existing zones and rates were capturing and reflecting the underlying variability in nutrient response across the paddock. NDVI (normalised difference vegetative index) imagery collected over the season (which measures ‘greenness’) and yield maps revealed variation that generally corresponded to changes in landscape and soil type, but showed that the farmer’s current VRA practice may need to be refined to capture and manage it effectively. The study also reinforced the importance of understanding the underlying causes of paddock variability when setting up effective management zones and rates. Cameron said it was important to remember 2016 was an exceptional season (decile nine rainfall), and general conclusions could not be made based on just one year of results. “Our findings, in terms of where things needed to change, and what might improve the system, were generally in line with what the farmer had observed over time,” he said. “The technologies that we worked with showed real potential to help growers implement VRA effectively, but we also experienced first-hand the practical limitations such as drone battery life that become more relevant in a large-scale broadacre environment. “Ultimately, technology doesn’t replace a good farmer, but can give them new tools for better management.” The research will continue to investigate the performance of VRA over the long term, and show alternative techniques that can be used to define management zones and rates. The 2016 BCG Research Results compendium has a full report of the trial findings. Contact Sebastian Ie on (03) 5492 2787. 6 Fairfax Media Special Publication Traditional Aboriginal burning in modern day land management BY CHRISTOPHER GILLIES FOR MORE than 50,000 years, Australia’s Indigenous community cared for country by using land management that worked with the environment. Using traditional burning, fishing traps, and sowing and storing plants, they were able to create a system that was sustainable and supplied them with the food they needed. When Europeans arrived, they brought farming practices suited to an environment very different to Australia, that in the long-term caused erosion and salinity. While many historical European accounts of Indigenous land management have faded, today there is a shift to recognise that Indigenous people had sophisticated sustainable agricultural systems. There is growing adoption of these practices to repair the damage done by European farming. One example gaining traction is the use of traditional Aboriginal fire management. Indigenous communities used fire across Australia, and in some areas this created expansive grassland on good soils that in turn encouraged kangaroos to come and were later hunted for food. Historians and researchers believe selecting what areas to burn, when, and how often, was part of Indigenous knowledge of the land. The result was a mosaic of trees and grasslands that meant the highly combustible Eucalyptus forests were not likely to create intense bushfires. With the arrival of Europeans, much of this practice has given way as fire became feared rather than harnessed as a tool to manage the scrub. The result was the grass plains gave way to thick scrub and bushland that was prone to intense bushfires. Australian National University professor Bill Gammage, an expert of traditional Aboriginal burning, told Landcare in Focus the use of fire could be adopted across the country and used for a variety of land management problems. “Fire can be used for one of three outcomes,” Bill said. “The first, to encourage native grasses to regenerate and produce new feed, the second to reduce scrub and fuel to prevent intense bushfires, and thirdly to promote biodiversity.” It is already in extensive use across the country, but particularly in the north where native grasses grow more vigorously in summer and need to be controlled, and where Indigenous communities actively manage the land. “On public land, national parks and public reserves and larger pastoral land it could be applied very effectively,” Bill said. Indigenous land management included using fire to regenerate flora. “Aboriginal people would apply it to very small areas if necessary, like back burning along creek front or pushing back bush in grassland.” He also said land managers need to understand how plants relate to fire and that this was local knowledge. The type and timing of fire was dependent on the season and location. This was important, particularly in the north where grasses dry out and a fire would be uncontrollable. Bill said fire was used at a time following the wet season while the grasses and soil was still damp. Across Australia there are a number of groups that work with farmers and Indigenous people and encourage them to work together to share knowledge and manage the land. Some of these groups include Local Land Management, the Aboriginal Land Management Councils, and Landcare groups. These groups encourage farmers and Indigenous people to work together to adopt land management practices closer to those used by Australia’s first inhabitants. While the use of fire is not the only tool, it is one the Indigenous community can share. More Kakadu plums a win for everyone BY TERRITORY NATURAL RESOURCE MANAGEMENT IN THE Northern Territory’s top end, harvesting Kakadu plums (Terminalia ferdinandiana) has always been popular. Long prized by Indigenous people for their nutritional and healing properties, people who can’t pick their own bush food are also developing a taste for it. Their demand for the fruit, which is packed with vitamin C, antioxidants, lutein, folate, zinc, magnesium, and calcium Thamarrurr Rangers Maureen Simon and Angus Melpi with re-sprouted Kakadu Plum tree. has the aroma of stewed apples and pears, and is increasingly sought after by Australian businesses. In the Thamarrurr region, nine hours’ from south-west Darwin, Wadeye community members quickly realised becoming a commercial supplier could be profitable, but also came with risks. Some were concerned that heavy handed harvesting could damage healthy trees, while others questioned how they could move from harvesting for local consumption to bigger scale activities. With over 100 Wadeye community members and their families involved in the annual harvesting of plums, the stakes were high. With funding from the Australian Government’s National Landcare Programme, Territory Natural Resource Management partnered with the Thamarrurr Rangers and local firm EcOz Environmental Consultants to help find a way to grow the industry sustainably. Community members were involved in researching the effects of poor harvesting techniques. A video about the Kakadu plum story and how to avoid issues that can arise from poor harvest practices was produced, while a monitoring system was put in place to stop pickers from damaging trees. With the new system in place, 157 pickers completed the induction course and harvested 5.4 tonnes of Kakadu plums in 2016. While the majority of pickers followed best practice protocols, where damage did occur, Traditional Owners asserted their rights to close some areas. Wadeye community members have praised the program which now earns money for purposeful work and lets them share knowledge among family members who go picking together. ■ Visit www.territorynrm.org.au/ projects. Fairfax Media Special Publication 7 Dairy farmers smarter about soil health and fertiliser KATE KIRK suspected too much fertiliser was being used on the Loch dairy farm she runs with her husband, Jason, but proving it was difficult until she completed a Dairy Australia Fert$mart course. The farm’s paddocks had always received plenty of fertiliser to capitalise on the high rainfall and strong growth rates of the area. But, Kate wondered about the effectiveness of the fertiliser regime and was determined to put some science behind the farm system. “I knew we used a lot, but I didn’t think it was my place to say anything when I really didn’t know what I was talking about,” Kate said. Her first step was to join a Fert$mart program that was being run in her local district. Fert$mart was developed by Dairy Australia to provide dairy farmers with appropriate knowledge and support to make good decisions about fertiliser application, and reduce nutrient runoff from their farms while maximising pasture growth. Fert$mart offers easyto-follow planning steps to guide farmers and advisors in their decision-making. The Fert$mart planning cycle begins with a situation analysis, followed by a management plan, and then implementation of the plan. Loch dairy farmer, Kate Kirk. Ongoing monitoring and review are key components of the cycle. More than 500 Australian dairy farmers – approximately 10 percent of the industry – have participated in Fert$mart programs. Independent evaluation found more than 80 percent of interviewed farmers said Fert$mart changed their attitude towards nutrient management. This was typically done by making them more conscious of nutrient loads and only applying fertiliser where it’s needed. All participants reported intention to monitor nutrients into the future. The basic doctrine of Fert$mart is that, by getting soil and fertiliser management ‘right’, farmers should be able to produce more feed at no extra cost. Having done the Fert$mart course, Kate was able to identify where the farm’s fertiliser regime was effective and where it was a waste of time and money. Effective effluent use is a key component of the Fert$mart program, with the Kirk’s seeing solid results from this. Kate said increasing the use of their effluent on paddocks had reduced fertiliser applications, which could then be utilised on areas of the farm that were not performing so well. “It was a good way to move the nutrients to where they need to be rather than just putting on the same thing everywhere,” Kate said. “We also used lime instead of the fertiliser to neutralise some of the pH levels which has given us a lot more grass on paddocks that were not working as well.” Efficient nutrient use is becoming increasingly important to dairy farmers as margins are squeezed from every direction. Pasture production depends on sound use of nutrients. If best results are to be achieved from fertiliser, it is important to understand soil conditions and identify the constraints that could be limiting production. It is a win-win when farmers can improve their business outcomes while reducing the environmental effects of fertiliser applications. Visit www.fertsmart. dairyingfortomorrow. com.au. Buffel grass management in the Alinytjara Wilurara Region BY NATURAL RESOURCES ALINYTJARA WILURARA. INITIALLY introduced into central and northern Australia for pasture improvement and dust control, buffel grass (Cenchrus ciliaris) continues to spread across the northern deserts of South Australia, transforming the landscape and impacting heavily on biodiversity. For Aboriginal people who have lived in these regions for countless generations, this invasion is deeply concerning. Although buffel grass is widely considered the species of choice by pastoralists because of its wide adaptation ability and tolerance of drought, fire and overgrazing, it is also an aggressive coloniser and was declared a weed by the South Australian government in 2015. Curtailing its spread has become a key objective of the Department of Environment, Water and Natural Resources’ (DEWNR) Alinytjara Wilurara (“north-west” in Pitjantjatjara) Natural Resources Management (AW NRM) Board. Spanning more than 250,000 square kilometres, the AW NRM Region covers over a quarter of SA including a large proportion of the Great Victoria Desert (GVD). Despite bordering the Anangu Pitjantjatjara Yankunytjatjara Lands, where buffel grass is thought to be irrevocably established, outbreaks within the GVD have been limited to a few isolated locations. Trains travelling east to west along the TransAustralian Railway line inadvertently carry and distribute buffel grass seed from infested areas to relatively untouched landscapes in the AW region. This necessitates constant monitoring and management of outbreaks occurring along the railway tracks and verges. Natural Resources Alinytjara Wilurara, in supporting the AW NRM Board, delivers hands-on training for community members to support them in effectively monitoring and destroying buffel grass while maintaining best practices in land management. These management strategies are particularly relevant at a local level where it causes significant loss of native flora and fauna, and negatively impacts on Indigenous cultural practices, including hunting and collecting bush tucker. Being significantly more flammable than native grasses, it produces highintensity fires which damage ecosystems never previously exposed to such extreme temperatures. Such fires also present a risk of damage to valuable infrastructure and property, as well as threaten the wellbeing of people living in remote communities across the region. Whereas traditional Aboriginal patch-burning encouraged regrowth of native grass species, the heat produced by burning buffel grass destroys native plants both above and below ground. Aboriginal women have also pointed out that they are reluctant to engage in traditional gathering practices because of the thick buffel grass decreasing visibility of snakes. With the GVD being one of the last deserts in Australia that maintains its pre-colonial biodiversity, the importance of managing the land and keeping it free of buffel grass is immeasurable. In SA, Natural Resources Alinytjara Wilurara is taking Controlling the spread of buffel grass is paramount in South Australia. the lead on working towards a ‘Buffel Free GVD’. In Western Australia, Spinifex Land Management, supported by the Rangelands NRM Alliance, are playing a crucial collaborative role. The AW NRM Board directs management strategies to prevent the spread of buffel grass seed and the formation of monocultures across the GVD, around Aboriginal communities and along various transport routes. The battle to keep SA’s southerly agricultural areas free of buffel grass begins with keeping desert regions healthy by using best practice land management techniques. 8 Fairfax Media Special Publication Bringing life back to legendary waterhole WHEN Neale Griggs took over the property next to the West Haughton River wetlands in Queensland 18 months ago, little did he know he would soon be playing a role in helping to protect the Great Barrier Reef. The iconic ‘Crooked Waterhole’ on Neale’s property, once legendary for catches of barramundi, had become densely choked with weeds. When Greening Australia approached him about helping to restore the wetland as part of Reef Aid, a major program to improve water quality on the Great Barrier Reef, he jumped at the opportunity. “When we purchased the property it was not hard to see that the creek had a problem,” Neale said. “Introduced species had taken over and there was very little fish activity or bird life.” Working in partnership with landholders like Neale, Greening Australia is restoring 200 hectares of priority coastal wetlands across two sites, the West Haughton River wetlands and Palm Creek. Coastal wetlands play a vital role in water quality, filtering fine sediment and nutrients from flood waters before they are washed out to the Reef. “We have selected sites that are inter-connected and adjacent to the national park and Ramsar listed wetlands,” said Greening Australia director of conservation Jelenko Dragisic. “Most sit on private land and have significant fisheries and biodiversity values. “They also form an important buffer between the farmland and the Great Barrier Reef World Heritage Area. “Neale had done an amazing job clearing the China apple infestation on his property and reestablishing grass cover. “But, he lacked the equipment, expertise and resources to restore the wetland. “We teamed up with Neale to help him return the waterhole to its natural state in a way that complemented his farm management. “In three weeks we were able to clear almost three kilometres of channels. “Due to the extremely dense vegetation over the channels we couldn’t use a helicopter to spray the weeds, it was too thick to use a boat, and too dangerous for people to spray by hand. “Instead, we used an amphibious excavator which allowed our contractor to do in seven days what would normally take a team months to do.” Because the weeds were largely floating, the use of the excavator also caused minimal environmental disturbance, including significantly reducing the amount of herbicide needed. “It was incredible seeing the site after the amphibious machine had finished,” Jelenko said. “It was like keyhole surgery – not a branch was missing! “They have done a mighty job at cleaning and restoring the creek back to its natural state.” Neale said: “I believe that Greening Australia has made a huge contribution to the environment in our little part of the country. “With their help, we intend to keep the creek in pristine condition.” Two sites in Crooked Waterhole before intervention (left) showing dense stands of Olive hymenachne and other weed species covering the water, and after intervention (right) with open water. Jelenko said they would see life return to the sea in the next 12 months. “We have already seen birds move back into the estuary,” he said. “With the wet season flood flows we expect native fish and crustaceans to join them and in the long term, maybe even crocodiles “Building relationships with landholders is critical to the success of Reef Aid as is the commitment landholders like Neale make to steward the land and ensure that our efforts are not reversed. “We’re now waiting for the rains to flush out the channels and return the land to its full natural beauty.” The site will continue to be monitored to track improvements in fisheries, water quality and vegetation. The project is supported by the Ian Potter Foundation, Virgin Australia, and the Australian government’s Reef Trust. Visit www.greeningaustralia. org.au. Weed control increases carrying capacity BY MARK KLEINSCHMIDT, DESERT CHANNELS GROUP NEW generation prickly acacia control is leading to remarkable improvement in ground cover, land health and carrying capacity in the Mitchell grass country of Queensland’s west. Twenty years of business as usual has seen Queensland’s prickly acacia infestations triple to 23 million hectares. Without a dramatic breakthrough, 95 per cent of the Mitchell Grass Downs will be impacted by 2030. That dramatic breakthrough has come from Longreachbased natural resource management group, Desert Graziers inspecting a treatment site discuss the program. Channels Queensland (DCQ), whose groundbreaking new techniques and technologies perfected over the past three years has seen a 15-fold increase in grass biomass at one monitoring site near Aramac. CEO Leanne Kohler said while this was boosted by droughtbreaking rain, even during the drought, the site had shown a five-fold increase in grass biomass. “Before we treated this site, it was fairly dense prickly acacia with very little ground cover around 100 kilograms per hectare biomass,” Leanne said. “A year later it was 500, and it’s now 1500 kilograms per hectare.” Figures from Mackey (1996) show pasture production is halved by a 20 per cent canopy of prickly acacia, while virtually all pasture growth is prevented by a canopy cover of 50 per cent. It should not be unexpected that removing the prickly acacia delivered this result. What is surprising is the way it has been done. “We use time-series satellite mapping to identify the prickly acacia hot spots in the landscape, then we match treatment techniques to infestation densities, treating the really dense stuff with a helicopter drone,” Leanne said. “Two additional keys to our efficiencies are an Area Management Plan under the Vegetation Management Act where we can kill immature natives in the course of treating prickly acacia, as long as we preserve the mature natives - and a federal permit to use tebuthiuron in ephemeral watercourses.” These two regulatory tools can only be activated by a DCQ fiveyear weed plan, which must be monitored by DCQ. Having redrawn what effective prickly acacia control looks like in western Qld, DCQ is still engaging landholders in control agreements, while their field team continues to knock out ultra-dense infestations in riparian areas, enabling the landholders to clear their paddocks in the knowledge that the major seed sources are gone. Of no less significance in this list of achievements is the mindset change. Historically, people spoke of the need to ‘control’ prickly acacia, which was likened to having a test cricket match-plan of not allowing the opposition to score too many runs, rather than aiming to bowl them all out. Language dictates mindset. Control is not a word DCQ uses any more. Now, the talk is of eradication. It may only be one paddock at a time, one property at a time, one creek at a time, one catchment at a time, but they are eradicating prickly acacia. Contact Desert Channels Group on (07) 4658 0600. Fairfax Media Special Publication 9 Creating ‘volcanic’ soil in WA BY WENDY WILKINS, SOUTH WEST CATCHMENTS COUNCIL INNOVATIVE thinker and farmer Doug Pow read about the benefits of biochar and decided to trial it on his own cattle and avocado property. The costs of incorporating it into his paddocks were prohibitive, involving machinery he does not like. So, he came up with a unique solution. In 2011, he began feeding biochar to his cattle so dung beetles could bury it on his farm in Middlesex, near Manjimup in the south-west of Western Australia. This success led Doug to commence a four-year trial in 2014 with biochar in a new avocado orchard to increase drainage and aeration, and facilitate root growth in his soils. Eighteen months after planting, the trees with biochar are twice the size of the control row, and much healthier looking. “I’ve seen avocados growing on a volcano and I’d like to replicate, as best I can, those andosol soils, because avocadoes have a very high requirement for oxygen in the soil,” Doug said. “It’s a very tall order in a soil which is of a very high bulk density, like our clays.” The trial is comparing three amounts of biochar 20, 10 and five per cent by soil volume incorporated in the soil to a depth of 600 millimetres. The adjoining control row is planted to avocados the standard way. There are varying soil types within the rows. At the top of the hill is a red chromosol soil, otherwise known as karri loam, on a clay subsoil and as you go further down the hill it graduates into a brown chromosol, and then into a pure laterite with no clay at 600mm. Each of the different volumes of biochar were placed under groups of four trees, which resulted in 12 trees on each of the soil types down the hill. Two of each block of four trees is mulched with biochar-enhanced mulch under trees in both the control and the trial rows. You can’t see any effect from that in either row. But, that can’t be said for biochar when it’s incorporated into the soil. “It’s quite astounding the way it has enhanced the evenness of growth and the consistency of tree size, trunk size, root volume, and its ability to absorb nutrients,” Doug said. “The avocado growers that see the trial are very impressed that it grows such a big tree so quickly, because little weak trees are susceptible to all sorts of things. Doug Pow on his Middlesex, WA, farm with wood chips used for mulch. “Getting a tree up quickly is a real head start and if you can cut a year off your wait for the trees to fruit, then that is an economic return. “It’s interesting that we have tested five to 20 per cent biochar, which is a 400pc increase in biochar proportion in the soil, but the trees look exactly the same. “Chances are 20pc is not too much and five percent is not too little. “The first test will be in fruit volume, fruit quality and fruit size. “The biggest test will be if it affects biennial bearing. “It’s ability to help the tree survive attack by Phytophthora cinnamomi (dieback) will also be very interesting. “Every tree I plant from now on, I would plant in biochar – that’s lesson number one, in flashing lights.” The project is supported by the South West Catchments Council through funding from the Australian Government’s National Landcare Programme. To see the full trial update, including how the trial was established, go to http://bit.ly/2jy3nkf. Finding pasture options for retired irrigation land A FIVE-YEAR research project into the use of retired irrigation land in the south-west Riverina region of NSW is producing findings with implications for low-rainfall zones throughout Australia. The project, titled Economically Viable Options for Retired Irrigation Land (EVORIL), aims to help with the structural challenges faced by the community in region due to declining availability of irrigation water. It is investigating the economic feasibility and productivity of various pasture species in previously irrigated land that has reverted to dryland. Site co-operators Tim and Tam Mulholand at their property ‘Operina’, Noorong. The EVORIL project is being carried out by the Western Murray Land Improvement Group (WMLIG) and the Central Murray BestWool BestLamb Group, and supported by Murray Local Land Services and the National Landcare Programme. The declining amount of irrigation water available for agriculture due to the water reform process has meant that large areas of land previously irrigated have reverted to dryland. Unfortunately, where land levelling and soil disturbance had been high, the predominant heavy sodic soils are dominated by non-productive species such as barley grass and roly poly. Commencing in 2013, the project has now tested 44 new and existing pasture species in replicated small plot trials to evaluate production, persistence and regeneration over a range of soil types and seasons. Promising species identified in the small plot trials have been introduced into larger grazing block demonstrations to compare livestock production performance against standard district practice. WMLIG’s Rick Ellis said there was still much to learn and demonstrate about species’ attributes and adaptability to local conditions. “We need a resilient pasture mix that improves the feed quality, extends the season and maintains ground cover,” Rick said. “The project has wider applications across the low rainfall zones nationally.” WMLIG’s Damian Jones said preparation was imperative for successful pasture establishment. “It shouldn’t be a spur of the moment decision to sow,” Damian said. “Look at weed control at least the season before you intend to establish new pastures.” Damian said the project also examined return on investment from sowing costs. “Don’t skimp on sowing rates,” he said. “Our variable rate sowing trials indicated that investing $70 per hectare instead of $20/ha on seed returned a net benefit of $179/ha. “The higher sowing rate also out-competed weeds more effectively resulting in additional labour and chemical savings.” The project is gaining recognition. Dr Peter Orchard, pasture researcher with the Graham Centre for Agricultural Innovation is one expert taking notice. “The project is unique in the range of material that is being evaluated and important for both the region and NSW in general,” he said. “We need to identify the best options with the least cost or risk to establish and expand into other areas to broaden the landscape mosaic with grasses and shrubs, including saltbush.” Farmers have made practical changes to more than 785ha of land and intend to make changes to a further 2540ha. Others are still waiting for further long-term assessment on the resilience and economic feasibility of different pasture options. Visit www.westernmurraylig.org or contact Rick Ellis on 0428 372 357. 10 Fairfax Media Special Publication Weed hunting tips for fireweed, African lovegrass Get up early to find fireweed and stay up late to find African lovegrass EARLY detection and removal of problem weeds can save landholders a lot of money and time. As the saying goes, prevention is better than cure. Anyone who has managed weeds would agree that action sooner than later is best to prevent weeds establishing. However, finishing the job thoroughly is also important because just one remnant weed can result in rapid reinfestation. “Detection of problem species like fireweed and African lovegrass in low numbers is often difficult,” said Department of Agriculture and Water Resources director of sustainable agriculture Ian Towers. “Fireweed’s yellow flower is often hard to distinguish at distance in a sea of yellow flowering plants common to pastures whilst African lovegrass, before it forms a tussock, is often not obvious.” Unlike many other yellow-flowered pasture plants, fireweed does not close its petals at night (petal movements are not nyctinastic). This means flowering fireweed can be spotted when other yellow flowers are closed. “The trick is to search for fireweed in the early morning light before the first rays of sunshine touch the paddocks and cause other flowers to open,” Ian said. “Just look for yellow flowers and hone in to investigate – it may be fireweed. “You might be surprised how effective this method is.” African lovegrass can be more readily detected at night by using vehicle headlights or a bright torch shone knee-to-waist height to scan across the pasture. “The dark seed heads of African lovegrass appear stark at night and don’t blend in with the background as they appear to during the day,” Ian said. “Good luck with the new approaches to weed hunting.” Why do you want to mess up rivers and slow down the water? BY DR SIWAN LOVETT, AUSTRALIAN RIVER RESTORATION CENTRE THIS is a question often asked by landholders when they are thinking about becoming part of the Rivers of Carbon program. Rivers of Carbon focuses on boosting biodiversity, sequestering carbon, and empowering communities to act with confidence in response to climate change. The program works with landholders and Landcare groups across th Southern Tablelands of NSW, and have projects in the Goulburn, Breadalbane, Upper Murrumbidgee and Yass regions. So, why do we want to mess up rivers up and slow them down? To answer this question, a broad range of perspectives is needed. The community was invited to hear what experts had to say. A workshop was organised, with a traditional owner, wildlife ecologist, river geomorphologist, social scientist, and landowner present to address this question. What became immediately apparent is that ‘messy’ is better for wildlife, river health, carbon sequestration, biodiversity and recreation, yet often the policies and beliefs about what ‘good land management practices are’ has led to cleared paddocks, less wood and ‘litter’, straightened streams, and water flowing as quickly as possible. The presenters explained how these activities reduce the complex habitat native wildlife needs to thrive, decreases water quality and bank stability, and impacts the ability to spend time along our rivers fishing and connecting with nature. Perhaps the most compelling argument, however, is that recent research has shown that in the efforts to ‘neaten’ rivers, it has drastically reduced their ability to capture carbon, as geoscience professor Ellen Wohl from Colorado State University explained at the Australian Stream Management Conference in 2016. “Natural river systems are complex, ‘messy’ and retain water, nutrients and carbon,” Ellen said. “Modified river systems are simple, ‘neat’ and designed to keep water moving. “These systems are carbon poor. “It is estimated that modified river systems store less than two percent of the carbon they used to.” Rivers need to be messy and have ‘room to move’, so that they can perform a range of functions, providing habitat and food for a wide range of animals, as well as having a range of flows and movement. Disturbance and movement is really important for rivers, creeks and streams, as the beds of rivers need to ‘turn over’ so that the water is oxygenated, and pools and riffles are formed. Some fish only spawn in submerged trees and logs, so we need these structures in our rivers for this to happen. What the workshop also showed was how much landholders, working with programs like Rivers of Carbon, can do on their place to boost biodiversity and improve productivity. Margie Fitzpatrick, a Goulburn landowner, gave an inspiring talk about the range of methods she has used to ‘mess’ things up and slow the water moving across her paddocks. “Some have been ‘hard engineering’ like flumes and rock chutes, but these have been mixed up with ‘soft engineering’ using vegetation, logs, rocks and hay bales, to fill eroding channels, enabling moisture to be retained and plants to grow,” Margie said. Margie concluded her talk by sharing her reasons A ‘messy and complex’ river, restored by planting a mix of grasses, shrubs and trees and letting nature do the rest. Photo: Haydn Burgess. for doing what she does, which underpins the reason for the Rivers of Carbon initiative. “My focus is growing healthy fertile soils for healthy grasslands, diverse species, content animals and happy people,” Margie said. “At the end of the day, it’s good to breathe in the magic.” The ‘Mess it up and slow it down’ workshop is now online for anyone to access on the Rivers of Carbon website titled ‘A great gig in Goulburn’. Rivers of Carbon is a partnership between the Australian River Restoration Centre and Greening Australia, supported by federal and state governments and local Landcare groups. Visit www.riversofcarbon.org.au; email [email protected] or contact (02) 6247 7997. Fairfax Media Special Publication Native veg insectaries creating a big buzz REGIONAL Landcare facilitator for the Port Phillip and Westernport Catchment Management Authority (PPWCMA), Karen Thomas, has been investigating ways that farmers could improve their farm biodiversity in combination with adopting sustainable land management principles. The national horticulture NRM strategy, released in 2006, contained a small case study on Integrated Pest Management (IPM) and research which demonstrated the use of native vegetation as habitat for beneficial insects. Karen found that a lot of work had already been done in South Australian vineyards, and a number of resources were already available. Other than a single vineyard in the Pyrenese, there did not seem to be much known about the practice in Victoria. So a few months later, Karen spoke with some of the researchers and found a local ‘you-pick’ berry farm in the Dandenong Ranges willing to set up a trial site. The owners of the berry farm began preparing areas for planting by using a light herbicide spray, and a team planted the areas with native tubestock in August 2016. Indigenous plants that complied with the documented Ecological Vegetation Class were used, alongside some non-local Indigenous plants, to be used as bush foods. A main insectary was planted along a fence line between two paddocks. This will become a multistrata shelterbelt creating a corridor from the existing native vegetation on the property (25.5 hectares) into the production area (containing Rubus sp and blueberries). Smaller plantings were scattered across the production area in preexisting empty garden beds and surrounding the ‘youpick’ gazebo. The owners of the property gained local planning permits to construct a restaurant onsite, so the incorporation of bush foods and citrus not only provides nectar during flowering phases, but can be freshly harvested to supply the restaurant, once operational. Mary Retallack from Retallack Viticulture has been conducting PhD research into native vegetation which offers the greatest nectar and shelter for beneficial insects. The PPWCMA hosted three workshops with Mary last year, where her preliminary results were discussed. Mary has identified three ‘hero’ native plants that provide excellent alternative habitat for beneficial insects. To monitor insect diversity and abundance across the property, sticky traps and pitfall traps were installed, with monitoring conducted monthly from October to January. Within 10 weeks of planting, several native plants were already flowering and the new insectary had an abundance of hover flies. A staggering 232 hover flies were counted in the 10 week flowering insectary. Interestingly, these numbers were not found anywhere else across the property – only in the newly planted vegetation. 11 Innovation to improve subsoil Encouraging innovation to curb pests and weeds IMPROVING the condition of the subsoil has the potential to reap a $67 million benefit for farmers in southern Victoria. That is one of the findings from a recently completed project conducted by Southern Farming Systems and the University of Melbourne where they constructed, designed, and tested a machine that could harvest and deposit organic material underground. The project was supported by the Australian government’s National Landcare Programme. Despite being in a high rainfall area, many crops and pastures run out of water in spring because the ability of the soil to store winter rainfall is limited by the subsoil layer at 20 centimetre to 40cm depth. Improving the subsoil increases the soil water storage, leading to better growth late in the season. The practice of improving the soil is commonly referred to as subsoil manuring and has been investigated for more than a decade. These small scale experiments proved the concept works, but taking it to a farm scale has been challenging, according to Geelong consultant Simon Falkiner. “The materials and machinery used so far are uneconomic on a commercial scale, so we had to find alternatives,” Simon said. AUSTRALIAN government grants to the value of $10 million are funding new technology to combat established pests and weeds. These unwanted species cost farmers about $4 billion a year in livestock losses, disease transmission control and weed management. The Control Tools and Technologies for Established Pest Animals The Southern Farming Systems subsoil machine and tractor. Karen Thomas talks about the purpose of the trial and what native vegetation was planted across the farm. Hover flies are highly beneficial and after feeding on nectar, the females seek out aphids in which to lay their eggs. With re-vegetation a part of good farm practice, incorporating native plants that provide excellent habitat for beneficial insects into projects will vastly improve conservation biological control as a crucial mechanism for good integrated pest management. Developing and introducing methods, such as native vegetation insectariums which allow growers to better understand the diversity of beneficial insects on their farm, the services these insects provide, the timing of their abundance or critical life stages for bio-control alongside softer pesticide options, will mean growers can vastly improve their IPM strategies and environmental assurance. A copy of the presentations from the native vegetation insectarium workshops can be found at www.ppwcma.vic.gov.au/ news/publications. Contact Karen Thomas on 0427 480 170 or email karen.thomas@ ppwcma.vic.gov.au. and Weeds Grants will finance a range of new control technologies, such as pest animal facial recognition systems, using drones in detection and control, lethal trapping and using new viruses and poisons. Visit http://www. agriculture.gov.au/pestsdiseases-weeds/pestanimals-and-weeds/wpcomp-grants-programme “The two promising developments have been the idea of growing as much material as possible on the paddock that is to be treated.” Using a combination of fast growing cereals and legumes, more than 10 tonnes per hectare of dry matter could be grown on the paddock. Any problem weeds also become valuable material to bury underground. “The second challenge was to create a machine that could harvest this material and bury it underground, all in one action,” Simon said. In partnership with a team from the school of engineering at the University of Melbourne, a prototype machine was designed that mowed the green forage, picked it up, and deposited the material behind tynes that had ripped 40cm to 60cm into the ground. Large blades and a roller then covered the green material with the disturbed soil. A number of farmer demonstrations were established in late 2014, but unfortunately 2015 did not result in any improvements in yield due to the failed spring. Luckily 2016 was a better year and although harvest is still underway, there were major visual differences in late season crop growth. The subsoil machine (with operator) is available for hire from Southern Farming Systems. Contact Simon Falkiner on 0407 319 967. 12 Fairfax Media Special Publication Polymer trials for erosion control BY SUSIE CHAPMAN DUE to its high rainfall intensities and steep topography, the Pumicestone catchment in south-east Queensland that supports a variety of thriving horticultural industries, has a high risk of soil erosion. We are witnessing this risk increasing with extreme rainfall intensity being recorded out of season, as happened in May 2015, where 300 millimetres was received in three hours at Glass House Mountains. Despite the best efforts of farmers with their application of erosion control measures such as effective drainage plans, use of living mulch, grass cover, mulch and compost and silt traps, the rich volcanic soils are still being lost to the waterways at an alarming rate. Maintaining farm productivity, viability, and healthy waterways calls for an innovative approach to hold the valuable soil in place. Trials are under way on macadamia and pineapple farms to reduce soil erosion by spray application of an inert polymer product, Vital Bon-Matt Stonewall, produced by Brisbanebased and Australian owned company Vital Chemical. The Queensland Department of Environment and Heritage Protection approves the use of this polymer on development and mining sites for surface stabilisation, yet this is the first time it has been used in agriculture. With support through the National Landcare Programme, Healthy Land and Water is working with macadamia farmer Troy Spedding and pineapple farmers Murray and Sam Pike, and Keith Morgan, at Glass House Mountains, to establish the most cost effective way of achieving maximum erosion control on their farms using the polymer. At current market prices, Stonewall costs $3000 per hectare if applied at 10 per cent concentration, which demands a significant benefit to offset. On the pineapple farm, the Pikes have been impressed with the results in 2016, using cone nozzles on a boom spray to apply 10pc concentration of Stonewall applied to the whole bed following initial settling rain. To further minimise the amount of product required for effective soil stabilisation, they are now refining their approach by applying the polymer only to the steeper sides of the beds. The trials are being designed and monitored using drone technology to measure micro-elevation through the University of The Sunshine Coast with the aim of strategically targeting the application to high erosion risk areas. Polymer application at the Spedding macadamia orchard at Glass House Mountains with Troy Spedding on the tractor and Marcus Koolen from Perfect Earth on the spray line. On the macadamia farm, Troy Spedding is trialling Stonewall on his steep sandy loam soils that were severely eroded in consecutive years of intense rain events. With support from Perfect Earth, Troy has added another dimension to his trial by applying Stonewall at 10pc concentration with and without a compost layer underneath. It is hoped the polymer will hold the compost in place on the steeper slopes and the surface roots will be able to incorporate the organic amendment to build structure and fertility that will further maintain the topsoil layer while enhancing productivity. The 2016-17 summer season has as yet brought no significant run-off rain to test the effectiveness of the polymer following application. The polymer is broken down by sunlight and microbes, so lasts longer in the darker macadamia orchard than on a bright pineapple farm. The soil protection on the pineapple farm is mostly required for the first few months after planting until the pines grow enough to stabilise the soil. However, this is not the case in the macadamia orchard where the soil stabilisation is required throughout the harvesting period to protect against surface root exposure by the harvesters. There seems little doubt the polymer can assist agriculture to stem the flow of sediment to the streams. The trick now is to tailor its use in a way that complements other erosion control measures to achieve desired environmental outcomes whilst maintaining farm viability. Email Susie Chapman at Healthy Land and Water on susie.c@ hlw.org.au or visit www.hlw.org.au for project information; or email Carlos Mira at Vital Industries carlos. mira@vitalindustries. com.au for product information or visit www. vitalindustries.com.au. Increased productivity on marginal saline lands BY DAVID BROADHURST AND GONSALO MATA FOR the past two years, South Coast NRM has coordinated a project where scientists from CSIRO and farmers Ian and Mike Walsh have identified how to reduce their farm’s carbon footprint and improve farm productivity. By incorporating native and non-native perennial shrubs into their marginal lands, the Walshes have demonstrated a reduction in the intensity of methane produced from merino lambs, getting them to market quicker compared to district practices. This trial, utilising emission monitoring technology in the project Sheep leave the poly tunnel after having their methane emissions measured for three hours after their morning graze. ‘Capitalising on perennial forages suited to the Western Australian south coast to reduce methane emissions intensity’, was funded by the Australian Department of Agriculture and Water Resources as part of the Carbon Farming Futures Action on the Ground program. “This is the first time we have looked at this as a way to reduce on-farm methane emissions while increasing productivity,” said South Coast NRM land program leader David Broadhurst. Incorporating perennial forage species can increase the area of productive land, improve nutrient cycling, reduce seasonal feed gaps and increase the soil’s carbon content. Improving the nutritional management of livestock can reduce methane emission intensity through the timely provision of nutrients to improve efficiency of feed conversion and growth. The project was established on the Walsh’s farm in Cranbrook in the Great Southern Region of WA during autumn 2013 on a six-hectare site. “We decided to work on our poor land so we could increase our production by using perennials,” Ian said. “This has increased our sheep-carrying capacity while maintaining our cropping area.” A variety of perennial shrub species including old man saltbush and other commonly used species were established and then grazed by merino lambs for 35 days. Oat stubble was used as the control for comparison. The lambs were placed into an inflatable polytunnel for three hours after their morning graze to measure the methane produced. Results showed the group grazing shrubs gained weight over the full 35 days of grazing while the group grazing stubble only gained weight for the first fortnight and then gradually lost weight for the last three weeks. On average the shrub group was 2.5 kilograms heavier after 35 days. Peak emission intensity was almost 39 per cent lower for sheep grazing shrubs compared with stubble. The profile of methane after peak emission for the shrub groups showed a linear decline. For the oat stubble group, the results showed little change after peak emissions, typical of diets with a slower digestion rate that limit daily feed intake. Consequently, the sheep grazing on shrubs got to marketable weight quicker than sheep grazing oat stubble, and emitted less methane. Visit http:// climateactionfarming. com.au or contact (08) 9845 8537. • David Broadhurst is from South Coast NRM Inc. and Gonzalo Mata is from CSIRO. Fairfax Media Special Publication A quiet revolution shifts Bengworden BY WEST GIPPSLAND CATCHMENT MANAGEMENT AUTHORITY AGRICULTURE is one of the biggest industries around the Gippsland Lakes, Victoria, and plays a large part in the health of these significant waterways. Jenny Robertson of Gracemere Merinos, a wool operation at Bengworden, said decisions made onfarm can have a direct impact on the lakes. In recent years, the Robertson’s and other farmers in the district have adopted grazing practices that have had great benefits for their properties, profit margins, and the Gippsland Lakes. The 1980s and 1990s were tough on the region, with a run of droughts and the wool price crash. Buying feed, reduced stock numbers, and poor commodity prices led to widespread financial difficulties. The land was suffering from loss of ground cover and topsoil, so when it did rain, there was nothing left to capture the moisture, taking more soil and dumping the sediment in the lakes. “We were basically in survival mode,” Jenny said. “By the end of 2008, everything was looking pretty terrible and we were all emotionally, physically and financially exhausted. “We were thinking: ‘Is there a future here?’.” That is when a chance family gathering around the television set watching a program on time controlled rotational grazing led to the Robertson’s three daughters saying ‘Dad, why don’t you do that?’. The couple had done Grazing for Profit training about 10 years previously with a number of other farmers from the area, Jenny Robertson on her property in Bengworden, Victoria. but there had been no local support. They implemented some of the principles, but had lots of challenges getting it to work. But, eventually a group of local farmers all reeling from the effects of the prolonged drought, got together and decided they needed to be more resilient for the next inevitable dry period. An opportunity came up when state government funding for the Gippsland Lakes became available to participate in a training program ‘Retaining topsoil and associated nutrients in the catchments of the Gippsland Lakes through improved grazing practices that reduce soil erosion at its source’. Together, the farmers formed the Bengworden Grazing Group, a subset of Bengworden Landcare, and successfully applied. The program included a bus trip to NSW to meet with farmers successfully implementing time controlled rotational grazing principles, and three workshops were held locally and on-farm for each farmer as they started trialling what they had learned. “With rotational grazing, you mob up – run your stock in larger mobs - in smaller paddocks and rotate them around according to the recovery period of the grass they need to go into next,” Jenny said. “Running the sheep at a high stock density (100 per hectare) for a short duration greatly reduces the stock camp effect. “This is where sheep in a set stocked system camp at the top of the hill every night and leave all the fertility there. “Rotational grazing let the stock leave their droppings all over the paddock therefore spreading the fertility more evenly.” Jenny explained that the grass needs to be recovered to a stage where it has dry leaf matter on it. The goal is to get perennial grasses back into the system. They have a deeper root system that decreases as the grass is grazed off and grows again with the grass. Back in 2008, Jenny said, when the property had no ground cover, a big rain event saw all the water that fell flow down the hill into the lakes, taking the Robertson’s topsoil with it. “That didn’t give us a good basis for recovery,” Jenny said. “It took so much longer for things to bounce back because we were starting from nothing. “With what we are doing now, if there was a similar event, we could bounce back much quicker. “We are trying to keep the risk out of our farming system and develop resilience for the tough times.” 13 Dung beetles get busy on water quality A GROUP of cattle owners from the Atherton Tableland, Queensland, have introduced select species of dung beetles with the aim of improving pasture condition and water quality. Nineteen properties have been strategically chosen as ‘seedproperties’ for the dung beetle introduction and environmental evaluation project, supported by Terrain NRM through funding from the Australian government. The Tableland currently has 500 cattle businesses, managing 90,000 head of cattle, with each animal producing up to 20 kilograms of manure a day. If left on the surface, cowpats can lose up to 80 per cent of their nitrogen. An active dung beetle population has the potential to cycle nutrients and organic matter back into the soil within 24 to 48 hours, instead of it being lost to the atmosphere, surface water or groundwater. This can reduce the need to use as much fertiliser for pasture maintenance, and nutrients are prevented from being washed into waterways by heavy rain. “Though there are some beetle species already here, they are not active in all seasons or across all properties, soil types, rainfall zones and the like,” said Rob Pagano, a main project driver. “What the project has done is introduce a greater diversity of species to see if they can survive, thrive and expand across the region under those varying conditions.” Six species of beetles have been released across the properties. The producers have been monitoring species survival rates and their spread across the property as well as their Grazier and president of the Malanda Beef Plan Group, Bruce Carcary. Photo: Terrain NRM Tableland. effectiveness in processing the dung. The new and improved dung beetle population will also combat an unpopular stock pest, the buffalo fly, by destroying the fly’s cow dung breeding ground. This would be another welcome outcome for producers. President of the Malanda Beef Plan Group, Bruce Carcary, said that cattle owners need to use more selective worming formulations for beetles to thrive across the region. “In order for us to reap the benefits from beetles, we need to make an attitude shift and use more selective worming formulations for our stock so that the dungbeetle larvae are not wiped out,” Bruce said. “This is essential for the beetles to survive and expand across the region.” Rob said: “It can take up to three years before it can be determined if species have successfully established.” “This is due to the very varied seasonal activity and lifecycles of the different species as well as variations in weather conditions.” For the Malanda Beef Plan Group, it is now a matter of patient monitoring and encouraging the use of beetle-friendly worming formulations. Contact Terrain NRM on (07) 4043 8000; email [email protected]; or visit www.terrain.org.au. 14 Fairfax Media Special Publication Inaugural AgCatalyst event challenges data mining teams BY CSIRO FARMS across Australia are generating troves of information every second. There are harvesters collecting information on yield, fuel usage and elevations; sprayers are logging spray rates, soil and moisture probes, and fertiliser application; and real-time and weather station data. As part of CSIRO’s inaugural AgCatalyst in Sydney in December 2016, a number of teams competed in the AgData Challenge, looking to understand how big data can be used to benefit farmers. National cropping company, Lawson Grains, provided access to a variety of data collected during their regular farming practices, and set the teams the task of interpreting the data and collating it in an understandable way. Lawson Grains General Manager Russell Cavill said the sheer volume and disparate nature of the data resulted in the company seeking a non-traditional avenue to find answers. “We are collecting an immense amount of data across our business and this data has the potential to strengthen our decision around nutrition, machinery logistics, staff productivity and much more,” Russell said. Winning team leader and CSIRO scientist Ross Searle said most farmers do not have the capacity, the time, or the software to analyse the raw data that their equipment generates. “Bringing the disparate data sources together into an open source format that we could easily access and analyse was a challenge for our team of data scientists, so you imagine it would be a problematic task for most farmers,” Ross said. “The team developed web apps that used yield data and ran a data mining process to develop yield models using different rainfall and fertiliser scenarios.” Second place was awarded to a team of PhD students from the University of Sydney. It has only been in the past decade that equipment with data-capturing capabilities has begun to be widely available. However, farmers are struggling to see the benefits of this captured information, and that is where big data could hold the key. “You can learn a lot from your data, but you can also learn a lot from other people’s data in the same region,” Ross said. “Think of every crop you plant as a separate experiment, where you capture your own data such as your crop variety, soil type, rainfall, fertiliser usage and yields. “By taking that next step and making that data available, you can look across an entire region and see how others have performed with different methods, which could enable farmers to make more informed management decisions.” Despite the hype around big data in agriculture, not many people are actually working in the domain due to the current difficulty in obtaining data from separate proprietary farming systems that do not communicate with each other. “Going to individual farmers and collecting information can be difficult,” Ross said. “However, working with data from a large organisation like Lawson Grains made it possible to explore these issues easily. “It was a positive step towards understanding how we can bring this information together and help farmers, consultants Ross Searle, CSIRO, presents the winning team’s data solutions. and technology providers to benefit from this data.” From Lawson Grains’ perspective, Russell said the AgData Challenge was an opportunity to consolidate its data gathering systems. “The Ag Data Challenge was extremely beneficial to our business as it gave us a real insight into what we could do with the data,” Russell said. “It has prompted us to commence looking at data management systems that will allow us to quickly analyse our data and use it in more future decisions.” Continued developments in data accessibility will bring the benefits of big data closer to farmers. National biodiversity data at your fingertips BY HANNAH SCOTT AND PETER BRENTON, ATLAS OF LIVING AUSTRALIA SUSTAINABLE land and natural resource management relies on many things, but at the core of it, timely accurate data at the right resolution is essential for benchmarking as well as monitoring status and change. Such data helps to improve productivity and yield, better manage and enhance biodiversity and natural assets, and adapt to changing climates and land use pressures. Thanks to rapidly evolving technology The ALA features a wide range of powerful, open source mapping and analysis tools, which allow users to explore and analyse information in new ways. Photo: Jess Rozas. and publicly accessible ‘big data’ capabilities, it is now easier to make environmental management decisions informed by large volumes of information. With open access to millions of digital records at your fingertips, Australia’s national biodiversity database, the Atlas of Living Australia (ALA) has a range of online tools and services that support environmental management and allow biodiversity and environmental information to be analysed in new ways. A common question asked by Landcarers is ‘What should I be planting on my property to minimise changing climate impacts and maximise the long-term success of my plantings?’. The ALA is being used to help answer questions like this, along with questions such as ‘I want to grow a particular crop, where are the best places to do this, both today and under future climate scenarios?’. The potential questions are endless, but some useful case studies have been put together at Spatial Portal Case Studies (www.ala. org.au/faq/spatial-portal/ spatial-portal-case-studies/). The ALA’s ‘explore your area’ feature allows you to enter a location and very quickly find and access records of species found in that area. Alternatively, you might already know the species you want to plant, but want to see if it is appropriate to plant in your location. The ALA allows you to search for species via maps as well as by query and filtering, access occurrence data and get information about the species found. You can even import your own data temporarily and use ALA’s powerful tools to visualise and analyse it, together with all of the other ALA data. With over 67 million digital occurrence records at your fingertips todate, the ALA has troves of information about Australia’s living things including species and their environments. It can be used in multiple ways for the experienced conservation planner, researcher or ecologist; farmers, teachers, gardening enthusiasts, and the general public. Visit www.ala.org.au Fairfax Media Special Publication 15 Web and mobile apps put the power in your hands THE power to accurately predict agricultural conditions and analyse situations to make informed decisions is rapidly moving directly into the hands of end users. Mobile and wireless technologies now allow those decisions to happen right in the paddock. Web and mobile apps developed by CSIRO and collaborators are allowing farmers to ride the precision agriculture wave themselves, as well as play their own part in providing scientific data. SoilWaterApp One example of how users can make informed crop management decisions via an integrated suite of functionalities is the SoilWaterApp (www. soilwaterapp.net.au and iOS), created by University of Southern Queensland in a collaboration with CSIRO. Users input information on their location, soil type and current crop management. The app finds the nearest weather station, and on a daily basis will predict the soil’s moisture levels throughout the cropping season. SoilMapp SoilMapp (www.csiro.au/ soilmapp and iOS) provides direct access to national soil data and information from the Australian Soil Resource Information System (ASRIS www.asris.csiro.au) as well as the APSoil database. Developed by CSIRO in conjunction with the Australian Collaborative Land Evaluation Program and the Grains Research and Development Corporation, the app provides information on the total amount of water that more than 1,200 soils across Australia can store and release to different crops. System upgrade boosting best practice in the cotton industry BY COTTON AUSTRALIA THE AUSTRALIAN cotton industry is now reaping the rewards of an 18-month program to improve its best management practice program, ‘myBMP’, enabling growers to maintain best practice for land management. Upgrades to the myBMP program, supported by funding from the Australian government’s National Landcare Programme (NLP) and the Cotton Research Development Corporation, maintained best practice standards while streamlining content, requiring growers to complete less checklist items. The myBMP team worked with consultants and technical specialists to review and update each of the 10 modules within myBMP. Each module has specific industry standards supported by checklists, additional information Cotton growers can maintain best practice land management with myBMP. Photo: Janelle MacPherson. and resources, and cover the following practices: • Natural assets; • soil health; • water management; • energy and input efficiency; • integrated pest management (IPM); • pesticide management; • petrochemical storage and handling; • biosecurity; • fibre quality; and • HR and WHS. In addition, the myBMP website infrastructure was upgraded to provide an improved user experience, compatibility with mobile devices which include a specialised auditing tool, spatial mapping reports to monitor best practice uptake, and a sustainability dashboard reinforcing the industry’s approach to management. “The NLP funding has also supported alignment of myBMP with programs that promote and encourage responsible and sustainable cotton production in Australia and around the world, including the Better Cotton Initiative (BCI) and Cotton LEADS,” myBMP manager, Rick Kowitz said. Email [email protected]. au or contact Rick Kowitz on 0427 050 832. Yield Prophet Developed by CSIRO and the Birchip Cropping Group (BCG), the Yield Prophet platform uses the Agricultural Production Systems Simulator (APSIM) to calculate yield probabilities across a range of data, including: in-season rainfall, soil test results, crop management strategies, and localised historic climate data. BCG’s Tim McClelland said one of the app’s core strengths is its integration with other apps, including Crop Manager and SoilMate. Apps help farmers make good decisions. MouseAlert Web technologies such as MouseAlert (www. mousealert.org.au and iOS) also have the potential to save crops from an entirely different threat to their yields – mouse plagues. The easy-to-use MouseAlert app only requires basic information on observed numbers (around five mice per hectare is the average), damage caused and any control activities. It is also quick to use, taking less than five minutes to complete, enough time for machinery operators to lodge a report before they finish a row. Real time mapping of plant pests ALL around Australia, farmers, government officers, agronomists and other consultants make checks of crops looking for plant pests and weeds. While it’s helpful for farmers to know about any pest problems on their property, without national coordination the full benefit of this vast surveillance activity has not been harnessed. With funding provided by a National Landcare Programme innovation grant, Plant Health Australia (PHA) has developed an innovative tool, AUSPestCheck, to collect, track, analyse and display plant pest surveillance data. The system provides users with a real-time picture of pest numbers and spread, and can handle information collected from both general and targeted surveillance activities in agricultural and environmental settings. Data can be entered using mobile devices, handy for field checks, and all information is held in a secure cloud environment. Added together, the data forms maps of pests and weeds, or their absence, and can track the spread of pests over time. For example, PHA used the system to track the spread of the new pest Russian wheat aphid from South Australia across south-eastern grain growing regions in 2016. On the other hand, having records that pests are not present is also important because such evidence can be crucial for accessing markets for our produce overseas. Nearly 300,000 records have been captured. So far it is primarily state government officers entering and accessing data. The system is not yet accessible to the public, but the plan is to broaden accessibility down the track. Reports are generated in real time, with access to the data available to all contributors. In-built alerts advise users when the numbers of a target pest increase above a threshold or when a pest moves into a new area. The search function allows users to look back in time to see how pest numbers and spread have changed. Plant Health Australia is the not-for-profit coordinator of the plant biosecurity system in Australia. Email [email protected]. au or phone (02) 6215 7700. Get the facts on tax incentives THE Australian Tax Office has produced a fact sheet about tax incentives for professionals, volunteers, landholders, and anyone connected with primary production entitled ‘Establishing shelterbelts on land used in primary production business: Can I claim a tax deduction? What you need to know’. It was developed in a partnership between ATO and the Basalt to Bay Landcare Network in December 2016. The pdf is available as a free download at www. basalttobay.org.au/ publications. Landcare in Focus is proudly supported by the Australian Government Department of Agriculture and Water Resources, and published by Landcare Australia in partnership with Fairfax Agricultural Media.
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