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Benefits |
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Silwet L-77 "The Super-Wetter"
Silwet improves the uniformity of coverage of soil acting pesticides
Without Silwet
Water will always take the path of least resistance, commonly resulting in vertical striping in the soil.This will result in uneven concentrations and distribution through the upper soil profile.
With Silwet
The addition of Silwet gives a more uniform horizontal band as it spreads around the surface of the soil particles.This effect offers a major benefit for leatherjacket control with chlorpyrifos. |
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Silwet improves the efficacy of soil acting insecticides
Source: SAC Aberdeen |
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Authorization |
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1. Field of use
For use only as an agricultural/horticultural/forestry wetting agent.
2. Status
Silwet L-77 is authorised for use with all fungicides applied to winter and spring sown cereals.
In addition Silwet L-77 can be used with the full approved rate of the pesticide within the restrictions of the “Crop Growth Stage Table” and with a 50% or less rate of the pesticide. |
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Formulation |
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A 100% emulsifiable concentrate containing a minimum of 80% w/w polyalkylene oxide modified heptamethyl trisiloxane and a maximum of 20% w/w allyloxypolyethylene glycol methyl ether. |
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Main recommendations |
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Silwet L-77 is recommended for use whenever increased wetting/coverage is desired e.g.:-
- Leatherjacket control with chlorpyrifos in a variety of crops e.g. oilseed rape, cereals, sugar beet, grassland etc.
- Cereals
- Fungicides e.g. flusilazole, Landmark, Unix for the control of stem base diseases.
- Chlorpyriphos for egg-hatch wheat bulb fly sprays.
- Vegetable Crops
- Fungicides and insecticides e.g. where improved wetting or canopy coverage/penetration is required.
- Cabbage root fly control.
- Silwet L-77 can be used to reduce spray volume e.g. the lowest approved water volume for the partner pesticide.
- Silwet L-77 can be used to reduce drift.
- Silwet L-77 can also be used with specified residual herbicides. |
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Compatibilities |
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There are no recommended tank-mixes where the addition of Silwet L-77
makes them physically or biologically incompatible. Silwet L-77 is not
recommended with Satellite, products containing fluoroglycofen,
bifenox, difenzoquat or cyanazine; or diclofop-methyl on barley.
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Rate of use |
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Silwet L-77 should normally be used at a rate of 0.05%. Use 200 ml/ha with soil applied pesticides.
Use 0.1% when applying with Flex on dwarf french green beans at the recommended 200 l/ha water volume.
For water volumes in excess of 400 l/ha the recommended rate of Silwet L-77 is 0.025%.
The maximum authorised concentration is 0.15% of the final spray solution. |
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Mixing sequence |
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Half fill spray tank and start agitation.
Add required quantity of Silwet L-77.
Add pesticide(s) as directed.
Continue agitation while topping up the tank and during spraying. |
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Hazard warnings |
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R20 : Harmful by inhalation.
R36 : Irritating to eyes.
R48/20 : Harmful: danger of serious damage to health by prolonged
exposure through inhalation.
R51/53 : Toxic to aquatic organisms, may cause long-term adverse
effects in the aquatic environment. |
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Number of applications |
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Silwet L-77 may be used as often as required on a crop, provided that the terms of the authorisation of Silwet L-77 and the terms of approval of the partner pesticide are followed. |
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Pack size |
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Silwet L-77 is supplied in 1 litre packs. |
