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Managing Pre-Harvest Glyphosate Application

Canola growers are being reminded that pre-harvest glyphosate applications should be carefully managed to help ensure crops meet the needs of domestic and export customers.

Applying pre-harvest glyphosate for weed control too early can result in unacceptable product residues in harvested grain, which can create market risk.

Where allowed, pre-harvest glyphosate should only be applied for weed control once grain moisture is less than 30 per cent in the least mature part of the field.

Justine Cornelsen is an Agronomy Specialist with the Canola Council of Canada.

"Understanding your pre-harvest intervals is extremely important, especially on a market aspect. Any product you're using, make sure that you know it's PHI (pre-harvest intervals) and are focused in to that," she said.

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This material is based upon work that is supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture, under agreement number 2023-38640-39573 through the North Central Region SARE program under project number ENC23-226. USDA is an equal opportunity employer and service provider. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and should not be construed to represent any official USDA or U.S. Government determination or policy.