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Maize Application

In the maize crop, timely application gives the optimum coverage of weeds.  The potential for problems with spray coverage rises as the height differential between the target and crop canopy increases. With the growth of the crop, a higher percentage of the applied herbicide dose is intercepted, whilst the targeted weeds receive a reduced dose. Raising the boom height further does little to alleviate problems with coverage but increases the potential for herbicide drift.

 

Pre-emergence herbicides application


Water volume
100 l/ha (70-80 l/ha for Airtec)

Nozzle choice
1st choice: DEFY nozzle angled forwards and backwards along the boom
2nd choice: AMISTAR nozzle, when conditions are marginal

Application speed
12 km/h

Other comments
Boom height should be no higher than 50cm above the crop or 70cm above the ground, whichever is the highest.

Post-emergence herbicide application 


Water volume
200 l/ha (70-80 l/ha for Airtec)

Nozzle choice
1st choice: DEFY nozzle angled forwards and backwards along the boom
2nd choice: AMISTAR nozzle, when conditions are marginal

Application speed
12 km/h (reduce to 8 km/h if weeds sheltered by thick crop)

Other comments 
Boom height should be no higher than 50cm above the crop or 70cm above the ground, whichever is the highest.