Cereal Fungicide Application
T0/T1
Cereals present a tall, thin target. Bigger spray droplets penetrate better into the canopy than fine mist, which is either dragged in by turbulence or drifts away. Typically, a standard fan-jet puts half the spray on the crop at GS30/31, the other half is available for weed control, or is wasted to the ground. Nozzles can be selected to suit different application targets.
Low drift nozzles have proven very effective and good results from air induction nozzles can be expected. The AMISTAR nozzle has been specifically designed to achieve the best results with fungicide applications – providing the ideal spectrum of droplet sizes. Syngenta cereal fungicides are robust and work well when applied as coarse sprays and at reduced volumes.
Water volume 100 l/ha
Nozzle choice AMISTAR nozzle
Application speed 12 km/h
Other comments Suitable for fungicide, PGR and herbicide (follow the label)
T2/T3
The best results with T2 and particularly T3 ear wash applications will be obtained by keeping the spray near the top of the crop and covering the plant on all sides. The AMISTAR nozzle achieves this at 12 km/h by precisely angling the spray to counteract the forward speed and producing small air included drops that are big enough to beat the sprayer turbulence.
Water volume 100 l/ha
Nozzle choice AMISTAR nozzle
Application speed 12 km/h
Other comments Suitable for fungicide, PGR and herbicide (follow the label)
Cereal Herbicide Application
Autumn Grass Weeds
With pre-emergence sprays there is only one target – the ground. An even distribution of the spray liquid is the aim. Patchy weed control most usually comes from patchy application, due to the wrong choice of nozzle and drift.
Fine sprays are important for retention on difficult to wet grass weed leaves such as wild oats and black-grass. For a given volume of liquid, when the drop size is halved, the number of drops produced goes up by a factor of eight, and the coverage of a flat area of leaf or ground may be up to four times greater. So where the target is very small, a fine spray will greatly increase the chances of hitting it.
Water volume
100 l/ha and above
Nozzle choice
For pre-emergence applications use the DEFY nozzle alternately forward and back along the boom. For post-emergence applications use the DEFY nozzle pointing forwards for best results. Alternatively the it can also be used where drift might be an issue.
Application speed
If conditions are sub-optimal slow down and apply at 12 km/h.
Other comments
Always use the full recommended dose. For volumes below 200 l/ha 1% v/v ADIGOR where coverage may be an issue:
1 litre ADIGOR in 100 l/ha
1.25 litres ADIGOR in 125 l/ha
1.5 litres ADIGOR in 150 l/ha
Keep boom height at 40-50 cm
Spring Grass Weeds
Water volume
100-200 l/ha
Nozzle choice
DEFY nozzle or conventional flat fans. Air inclusion nozzles are less effective at this time, especially in a dense crop.
Application speed
12 km/h is optimum