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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

TimingWater volume (l/ha)*Best nozzleReduced drift optionNotes
Pre-emergence good seed bed2003D nozzle spraying forwards and backwardsTeejet TTI 110-05 or Lechler ID3 120-05An AMISTAR nozzle produces 40 drops/cm2
Pre-emergence cloddy seed bed200-4003D nozzle spraying forwards and backwardsTeejet TTI 110-05 (90% DRT) or Lechler ID3 120-05Cloddy seedbeds reduce weed control. Even coverage on both sides of clod achieved with angled nozzles
Post-emergence soil applied200-400Syngenta vegetable nozzle 06 or 08AMISTAR nozzleNarrow angle fan best for reducing spray retained on crop leaves
Graminicide100-2003D nozzle spraying forwards and backwardsAMISTAR nozzleAngled sprays typically double the spray retained on grass weeds
Broad-leaved weeds100-2003D nozzle spraying forwards and backwardsTeeject TTI 110-05 (90% DRT)Increasing water volume increases droplet size reducing spray retention on crops such as alliums

 

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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small open100-200AMISTAR nozzleAMISTAR nozzleRun-off is the enemy of small plants
Hearted300-800Syngenta vegetable nozzle 06 or 08AMISTAR 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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small open100-200AMISTAR nozzleAMISTAR nozzleRun-off is the enemy of small plants
Large300-500Lechler ID3 120-05Lechler ID3 120-05For deposition onto the buttons and lower leaves we recommend Lechler ID3 120-05, 300 l/ha, consider using an approved adjuvant oil, especially when crops have significant wax

 

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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small100-2003D nozzle, angle spray forwards and backwardsTeejet TTI 110-05 or IDTA 120-05Coverage, run-off and missing the target are the problems of onions. Angled nozzles increase coverage and deposition
Large200Teejet TTI 110-05 or IDTA 120-05Teejet TTI 110-05 or IDTA 120-05Using air induction nozzles increases droplet size and increases penetration and coverage deeper in the crop canopy. Consider using an approved adjuvant which can help increase coverage and deposition

 

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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small100-2003D nozzle or Syngenta potato nozzle 04 or 05AMISTAR nozzleCarrots are good at catching spray. Angling nozzles e.g. Twin Cap will give best results
Large300-400Syngenta vegetable nozzle 06 or 08Syngenta vegetable nozzle 06 or 0865 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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small open100-200AMISTAR nozzleAMISTAR nozzleRun-off is the enemy of small plants
Hearted300-800Syngenta vegetable nozzle 06 or 08Syngenta 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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small1003D nozzle, angle spray forwards and backwardsTwin cap conventional nozzle in front, air induction nozzle in rearCoverage, run-off and missing the target are the problems of leeks. Angled spray important. High volumes = run-off. If targeting thrips in shaft use the AMISTAR nozzle. The addition of an adjuvant also helps
Large200-300Syngenta potato nozzle 04 or 05Twin cap conventional nozzle in front, air induction nozzle in rearAngle 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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small pre-curd200-300Syngenta potato nozzle 05AMISTAR nozzleRun-off is the enemy of small plants
Developing curds200-300Syngenta potato nozzle 05 or Syngenta vegetable nozzle 06Syngenta vegetable nozzle 06 or 08If 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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Fern application250-350Twin Cap Syngenta vegetable nozzle and standard flat fan nozzle alternating or a dropleg sprayer with standard flat fan nozzleAMISTAR nozzleKeep 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 stageWater volume (l/ha)*Best nozzleReduced drift optionNotes
Small plants pre-fruit200Standard flat fan nozzleAMISTAR nozzleRun-off is the enemy of small plants
Large fruiting plants200-300Standard flat fan nozzle or Droplegs with standard nozzleAMISTAR 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 nozzleReduced drift option
300Syngenta vegetable nozzle 06Syngenta 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.