Attention to detail vital when using glyphosate

Glyphosate is now the only chemical option following the removal of diquat. But growers must remember that it cannot be used on seed crops.

“It’s best to aim for application 14-20 days before harvest. Seed moisture should be at 30% or below for glyphosate application,” says Dick Neale of crop protection experts Hutchinsons.

“Rates of glyphosate need to be robust – at least 1440gms of active, and if using generic products then its important to add in the required adjuvant.

Once work is done, ensure all plant material and residue is cleaned off in the field. Sprayers should be washed externally. Internal cleaning should be thorough, adding a recommended cleaning product at the recommended rate to a tank of clean water.

“This will ensure no desiccant remains, and will also help keep sight gauges clear, as these can become clouded from residue if pod sealant has been used.”

Glyphosate is susceptible to cations in water. This can cause lock up of the active and reduction in the ability for the herbicide to work effectively. Adjuvants have a growth stage cut off for use with 100% dose of pesticide.

“If preferring a non chemical route then swathing is an option – but really only tends to suit crops that are thick and are leaning. It’s important when swathing to keep the swathed crop off the ground to allow for air flow.”

“Of course, if a crop is weed free and very even, there is the option to do nothing and let it ripen naturally. This is useful if there are large areas of oilseed rape to harvest and you are trying to spread out the harvest window.

“But the crop will take longer to ripen which means this is not really an option the further north you go due to the lower temperatures and higher moisture levels.”

DART from DSV – Right on target

DART – A significant step forward in DSV’s reliable, simple to grow, high output oilseed rape varieties.

• High yield and impressive oil content.

• TuYV protection with good tolerance to Verticillium wilt.

• HarvestMax technology to minimise pre harvest seed losses.

• Low biomass variety for early maturity and easy harvest.

Source: AHDB Recommended List (E/W) 2023/24 Phone 01295 757003 www.dsv-uk.co.uk

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