Angled nozzles improve coverage around clods
For optimum pre-emergence application, angled nozzles alternated forward and backward along the spray boom can help give better coverage of cloddy soils. It also helps to reduce risk of drift.
Targeting weeds in the growing crop
As the maize crop increases in size, so does the amount of herbicide spray that it intercepts at the time of application - thus significantly reducing the dose targeted weeds receive. Again, angled nozzles alternated forwards and backwards along the spray boom improve spray penetration of the canopy and target weeds more effectively.