Pre-harvest Glyphosate Staging Guide

Use these handy staging guides to determine when grain moisture is less than 30% in your crop.

General Glyphosate Information

• Where allowed, glyphosate is registered for pre-harvest weed control and is not to be used as a desiccant
• Pre-harvest glyphosate may only be applied when grain moisture content is less than 30% in the least mature part of the field, including any areas of regrowth which may produce seed. Applying too early can result in unacceptable product residues in the grain.
• To avoid unacceptable residue levels, always follow the product’s label for application rate, timing and pre-harvest interval (PHI).
• Never harvest earlier than recommended – this can increase the risk of unacceptable glyphosate residues in harvested grain.
• When using glyphosate for pre-harvest weed control in a tank mix with other products, such as Saflufenacil (Heat), the products must still be applied when grain moisture content is less than 30% in the least mature part of the field and must also follow the PHI of the most restrictive product label.

On-farm practices make a difference in protecting Canada’s reputation as a trusted supplier of high-quality canola, cereals and pulses. For current product advisories and more ways to keep your crop ready for market, visit the Product Advisory page.