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A maize crop provides a very open canopy to begin with allowing for great coverage using the 3D Nozzle at pre- and post-emergence. As the crop moves through the growth stages the canopy covers and the height differential between the target and the boom height increases. This increases the chance of herbicide been intercepted on route to the target.

TimingWater volume (l/ha)*Forward speedBest nozzleReduced drift option
Pre-em herbicides200 l/ha<12 km/h3D ninety - alternating forwards and back3D ninety - alternating forwards and back
Post-em herbicides200 l/ha<12 km/h3D ninety - alternating forwards and back3D ninety - alternating forwards and back

*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.

Pre-em maize herbicide application

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.

Post-em maize application

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.

Avoid loss: go early

All weeds should be removed at the earliest opportunity, ideally before they reach 10 cm high and before the crop is at the 4 leaf stage. Prioritise fields with the highest weed population densities, difficult to control weeds and any slow growing crops first.

Based on numerous trials the latest stage of weed removal without yield damage should be no later than 4 leaf stage of the maize crop.

Maize Weed Chart Screenshot

Maize Weed Chart

Find the best tank mix to tackle your weed situation