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Vegetables Application

Vegetables are a high input crop requiring multiple applications throughout the season. Nozzle selection is vital especially with the wide range of different shapes and surfaces that chemical is applied on. Herbicide application is often when the crop is small and therefor coverage is vital.

 

Herbicide Application

Timing Water volume (l/ha)* Best nozzle Reduced drift option Notes
Pre-emergence good seed bed 100-200 3D nozzle spraying forwards and backwards AMISTAR nozzle An AMISTAR nozzle produces 40 drops/cm2
Pre-emergence cloddy seed bed 100-200 3D nozzle spraying forwards and backwards AMISTAR nozzle Cloddy seedbeds reduce weed control. Even coverage on both sides of clod achieved with angled nozzles
Post-emergence soil applied 200-400 Syngenta vegetable nozzle 06 or 08 AMISTAR nozzle Narrow angle fan best for reducing spray retained on crop leaves
Graminicide 100-200 3D nozzle spraying forwards and backwards AMISTAR nozzle Angled sprays typically double the spray retained on grass weeds
Broad-leaved weeds 100-200 3D nozzle spraying forwards and backwards AMISTAR nozzle  

 

Insecticide and Fungicide Application

Cabbage

Field trials have shown that tailored application advice will improve efficacy of products at different timings. For cabbages this is defined as when the crop are small and when they are hearted.

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small open 100-200 AMISTAR nozzle AMISTAR nozzle Run-off is the enemy of small plants
Hearted 300-800 Syngenta vegetable nozzle 06 or 08 AMISTAR nozzle  

 

Brussels Sprouts

Recommendations vary depending on the size of the crop at the time of application. Early herbicides can be applied using conventional technology however the later fungicide applications can have their effect maximised on the buttons by the specific recommendations below.

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small open 100-200 AMISTAR nozzle AMISTAR nozzle Run-off is the enemy of small plants
Large 300-500 Syngenta potato nozzle 05, spraying forwards and backwards (droplegs worked well in single trial) Twin cap conventional nozzle in front, air induction nozzle in rear Angled spray important to get spray under top leaves. Use twin cap option for volumes greater than 300 l/ha

 

Onions

In onion crops it is important that the application method is right as crop coverage is vital, an angled spray is vital to get the best coverage possible.

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small 100 3D nozzle, angle spray forwards and backwards 3D nozzle, angle spray forwards and backwards Coverage, run-off and missing the target are the problems of onions. Angled spray important
Large 200 3D nozzle or Syngenta potato nozzle 04 or 05 3D nozzle, angle spray forwards and backwards Angle spray forwards and backwards

 

Carrots

Carrot crops are easy to cover when they are small however it is very difficult to achieve good coverage of the crown using conventional technology, especially when the canopy is large.

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small 100-200 DEFY 3D nozzle or Syngenta potato nozzle 04 or 05 AMISTAR nozzle Carrots are good at catching spray. Angling nozzles e.g. Twin Cap will give best results
Large 300-400 Syngenta vegetable nozzle 06 or 08 Syngenta vegetable nozzle 06 or 08 65 degree fan the best for penetrating to crown

 

Lettuce

Lettuce crops move through the growth stages quickly it is important that you hit it at the right time and get the maximum coverage possible.

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small open 100-200 AMISTAR nozzle AMISTAR nozzle Run-off is the enemy of small plants
Hearted 300-800 Syngenta vegetable nozzle 06 or 08 Syngenta vegetable nozzle 06 or 08  

 

Leeks

Leek crops can be hard to target with a large amount of run off meaning that high water volumes are vital.

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small 100 3D nozzle, angle spray forwards and backwards Twin cap conventional nozzle in front, air induction nozzle in rear Coverage, run-off and missing the target are the problems of leeks. Angled spray important. High volumes = run-off
Large 200-300 Syngenta potato nozzle 04 or 05 Twin cap conventional nozzle in front, air induction nozzle in rear Angle spray forwards and backwards

 

Cauliflower

Cauliflower crops change throughout the season with run off being the major concern it is important use the correct nozzle.

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small pre-curd 200-300 Syngenta potato nozzle 04 or 05 AMISTAR nozzle Run-off is the enemy of small plants
Developing curds 200-300 Syngenta potato nozzle 05 or Syngenta vegetable nozzle 06 Syngenta vegetable nozzle 06 or 08 If leaves are the target use the potato nozzle, if curds are the target use the vegetable nozzle

 

Asparagus

Asparagus is a small target to hit in the field therefore accuracy is key make sure that the nozzles allow for maximum results. 

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Fern application 250-350 Twin Cap Syngenta vegetable nozzle and standard flat fan nozzle alternating or a dropleg sprayer with standard flat fan nozzle AMISTAR nozzle Keep water volume below 350 l/ha to avoid run-off

 

Courgettes

Courgettes come in a varying sizes and require optimum coverage of application as run off is a major concern. 

Growth stage Water volume (l/ha)* Best nozzle Reduced drift option Notes
Small plants pre-fruit 200 Standard flat fan nozzle AMISTAR nozzle Run-off is the enemy of small plants
Large fruiting plants 200-300 Standard flat fan nozzle or Droplegs with standard nozzle AMISTAR nozle  

 

Applications through fleece

Fleece covers the canopy of the crop meaning that any application needs to penetrate through the surface of the fleece in order to get to the target.

Water volume (l/ha)* Best nozzle Reduced drift option
300 Syngenta vegetable nozzle 06 Syngenta vegetable nozzle 06 or 08

*Please refer to the product label for water volumes.  Growers can reduce water volumes as long as they adhere to the HSE/DEFRA Code of Practice for Using Plant Protection Products. Please refer to paragraph 4.6.4, page 81 of the HSE/DEFRA Code of Practice for Using Plant Protection Products.