Fact Sheet
ORIUS® Fungicide
An Oil in Water emulsion (EW) containing 250 g/litre tebuconazole
ORIUS is a systemic fungicide for disease control in cereals, ryegrass seed crops,
peas and onions. Tebuconazole is a triazole fungicide in the DMI group of EBI
fungicides. ORIUS is absorbed throughout the foliage and controls fungii by
disrupting cell wall development. It has both protectant and curative activity on a
broad spectrum of diseases and is particularly active on Fusarium species, one of
the ear disease complexes in cereals. Activity will last from 2-4 weeks depending
on disease incidence and severity. It is translocated upwards in the plant and
provides some protection to new growth.
For maximum disease control and yield benefit, ORIUS should be applied at an
early stage of disease development, before infection spreads to new crop growth.
DIRECTIONS FOR USE:
CEREALS and RYEGRASS SEED CROPS
Use ORIUS alone early in the season on young plants when disease pressure is
low. Tank mixtures with strobilurin group fungicides are recommended for
susceptible cereal and ryegrass seed diseases (see Notes following this table).
Crop
Barley
Disease
Scald,
Rate
Critical Comments
750ml/Ha
Apply at first appearance of disease. A
further application may be necessary 3 to 4
weeks later if disease pressure remains high.
750ml/Ha
Apply as a preventative spray at ear
emergence especially during cool, moist
conditions which favour spread of disease.
Net Blotch,
Spot Blotch,
Ovularia Leaf Spot,
Leaf Rust,
Ear Disease Complex
Wheat
Glume Blotch
Apply at first appearance of disease. A
further application may be necessary 3 to 4
weeks later if disease pressure remains high
Leaf Rust, Stripe Rust,
Speckled Leaf Blotch
Oats
Crown Rust
750ml/Ha
Apply as preventative spray on susceptible
cultivars and at first sign of disease on less
susceptible ones.
ADAMA New Zealand Ltd. 1/19 Elms St, Wakatu Estate, PO Box 1799, Nelson 7040, New Zealand
Telephone +64(3)543 8275 | Facsimile +64(3)543 8274 | www.adama.com
Ryegrass
Seed
Crops
Leaf Rust,
Stem Rust
750ml/Ha
For best control on susceptible cultivars
apply as a preventative spray after closing up
for seed and repeat at 3-4 week intervals
while disease pressure remains high.
Notes for CEREALS and RYEGRASS SEED CROPS:
Symptoms of leaf and stem diseases in these crops generally take about 14-21
days after infection to become visible. Some, such as powdery mildew can take as
little as 7-10 days. This means that fungal mycelia will have caused some crop
tissue damage before visible signs of infection can be seen.
If in doubt apply early as a protectant application before visible symptoms are
evident. Ask local advisors which varieties are more susceptible to specific
diseases and monitor these varieties more closely if problems have occurred in
previous seasons.
Apply ORIUS as early as possible. When tank mixing ORIUS with a strobilurin
product, lower rates can be used if local experience indicates good control can be
achieved. As a general rule use low rates early in the season when disease
pressure is low, increasing the rates as disease pressure increases. Use full rates
to cure established diseases under severe infection conditions but remember that
considerable crop damage will have already occurred. ORIUS is the most effective
triazole fungicide for fusarium ear blight control in wheat.
Ryegrass stem rust is a very aggressive disease especially in turf cultivars. For
stem rust always use full rates of ORIUS. ORIUS can be used alone early in the
season with two applications 7-10 days apart, but strobilurins must be added at
flag leaf and pre-flower stages for maximum control. A third application during
seed-fill may be required for highly susceptible turf cultivars if severe infection
conditions persist. Use full strobilurin rates for highly susceptible cultivars and
lower rates for other varieties if local experience indicates adequate control.
PEAS and ONIONS
Crop
Disease
Rate
Critical Comments
Peas
Powdery Mildew
250ml/Ha
Apply as a preventative spray at flowering or at
first sign of disease. If disease conditions
persist, a further application 14 days later may
be necessary.
Onions
White Rot
1.5 L/Ha
Make the first application 6-8 weeks after
sowing and follow with two further applications
at 3-4 week intervals.
ADAMA New Zealand Ltd. 1/19 Elms St, Wakatu Estate, PO Box 1799, Nelson 7040, New Zealand
Telephone +64(3)543 8275 | Facsimile +64(3)543 8274 | www.adama.com
WITHHOLDING PERIODS:
Cereals
Onions
49 days
35 days
Peas
Ryegrass Seed Crops
14 days
30 days
APPLICATION:
Use conventional application equipment.
Ground Application: Use a minimum of 200 litres of water per hectare.
Aerial Application: Use a minimum of 50 litres of water per hectare. Apply in
sufficient water to ensure more than 20 droplets/square centimetre on all leaves.
As there are many factors involved in aerial application, contact a representative
for detailed information.
For onions use a minimum of 1000 litres of water per hectare. Use higher water
volumes in dense or advanced crops especially under dry weather conditions.
ORIUS may cause yellow leaf spotting to some durum wheat when applied after
head emergence
RAINFALL:
Do not spray if rain is expected within 1 hours of spraying.
COMPATIBILITY:
Can be tanked mixed with most commonly used fungicides, herbicides and
insecticides.
CAUTION:
ORIUS is toxic to aquatic organisms so a strategy to minimize spray drift should
be used at all times when applying spray near aquatic environments.
RESISTANCE:
Resistance to this and other DMI fungicides could develop from repeated use. To
minimise this risk use strictly in accordance with label recommendations. Apply a
maximum of three DMI fungicides per crop, per season, at full recommended label
rates.
ADAMA New Zealand Ltd. 1/19 Elms St, Wakatu Estate, PO Box 1799, Nelson 7040, New Zealand
Telephone +64(3)543 8275 | Facsimile +64(3)543 8274 | www.adama.com
IMPORTANT: This is not the registered label. Always read the label before using
this product and follow label instructions.
For specialist advice in an EMERGENCY call 0800 734 607 (all hours).
®Adama and Orius are registered trademarks of an Adama Group Company.
Registered pursuant to the ACVM Act 1997, No, P7274. See www.foodsafety.govt.nz for registration conditions.
HSNO classifications 6.1E, 6.4A, 6.9B, 9.1A See www.epa.govt.nz for approval controls.
Release date: 29.12.05
ADAMA New Zealand Ltd. 1/19 Elms St, Wakatu Estate, PO Box 1799, Nelson 7040, New Zealand
Telephone +64(3)543 8275 | Facsimile +64(3)543 8274 | www.adama.com