Mode of action
Parasitic nematodes to tackle the larvae and pupae of the black vine weevil (Otiorhynchus sulcatus)
After application, the parasitic nematodes actively
Larvanem (Heterorhabiditis bacteriophora)
Entonem (Steinernema feltiae)
• Minimum soil temperature of 14°C
• Minimum soil temperature 8°C
nematodes then feed on the contents of the larvae,
• Effective in combating larvae and pupae
• Effective in combating larvae
• Release period: early autumn and late spring
• Release period: late autumn and early spring
• Dosage 500 million per 1,000 square metres
• Dosage 500 million per 1,000 square metres
hunt for the larvae and penetrate them. The
releasing certain bacteria from their intestinal tract.
These bacteria convert tissue from the host into
substances that are easy for the nematodes to absorb.
The larvae die within a few days. The population
development of the nematodes within the host
population is dependent on the number (dosage)
applied and the size of the host population. In this
regard, it is important that Larvanem and Entonem
be applied on uncovered, moist soil.
“Life cycle and moment of application of nematodes (beneficial nematodes)”
Stage
January
February
March
April
May
June
July
August
September
October
November
COMBATING THE BLACK VINE WEEVIL
Combating the black vine weevil quickly and effectively
December
Larva
Pupa
Egg
www.koppert.com
Adult
Application of Entonem (S. feltiae)
Application of Larvanem (H. bacteriophora)
Period of presence
Application method
Open ground
Container cultivation
Spraying
0.5 million nematodes per litre 1 L liquid/m²
0.5 million nematodes per litre 1 L liquid/m²
• Apply to moist uncovered soil
0.5 million nematodes per litre 1 L liquid/m²
• Open ground
Pouring
Quantity of liquid
Application
100 ml per 10 litres of container volume
› Spray/use sprinkler,
trickle irrigation
• Container cultivation
› Spray/use sprinkler,
trickle irrigation, watering can rose
Combating 3rd stage larvae of the black vine weevil, 1 week after treatment
Entonem (S. feltiae)
Advantages of using parasitic nematodes
Larvanem (H. bacteriophora)
• Safe application for user
100%
• Fast and effective
• Good persistence
• Can be used in tree nursery crops (yew, thuja,
rhododendron), berry cultivation, strawberries,
80%
Mortality rate
ornamental crops and various pot plants, etc.
Package options
60%
› 100 square metres
• 500 million › 1,000 square metres
• 50 million
COMBATING THE BLACK VINE WEEVIL
Dosage
40%
Comments
• Do not cover exterior/bark
entry into the soil
20%
› obstructs
• Prevent occurrence of dry spots (the
formation of raised spots during trickle
0%
5˚C
8˚C
12˚C
15˚C
20˚C
Temperature
irrigation)
› black vine weevils seek out
drier spots, while parasitic nematodes
prefer moist soil
• Check the ends of the trickle irrigation
• Mix continuously in order to prevent
Equipment
• Watering can, sprinkler, backpack spray unit
• Remove all strainers to prevent blockages
• Spray nozzle opening: at least ½ mm
• Water the crop (with a sprinkler) before
evenly distributed over the whole system.
• If necessary, repeat the treatment during the
development of the larvae (autumn and spring).
and after application
• Keep soil sufficiently moist for the first
(500 microns)
• Pressure: max. 12 bar
WWW.KOPPERT.COM
• Spray over soil surface
hoses to verify that the nematodes are
|
[email protected]
two weeks after application
PR21121/110301
www.koppert.com
or vehicle-mounted spray unit, trickle irrigation
nematodes sinking to the bottom