Glyphosate stewardship
Date & Time
Wednesday, January 11, 2023, 10:45 AM - 11:15 AM
Tom Wolf

Glyphosate is one of the most important and widely used herbicides in Alberta, and also globally. It has favourable eco-toxicological properties but is nonselective in plants, and its off-target impact can be significant. Though tightly bound and biologically unavailable in soil and sediment, glyphosate can be long-lived and detected in analysis. Stewardship remains important for this herbicide.

Glyphosate is non-volatile and is one of the few herbicides whose efficacy improves wit larger droplet sizes and lower water volumes. As such, reducing drift has been relatively easy and successful. The addition of tank mixes does require a compromise in spray quality to maintain efficacy of tank mix partners. The development of resistance to glyphosate means that accurate and uniform application is required. Disposal of glyphosate, as with any pesticide, must avoid contamination of soil or water. Applicators have significant control over these aspects, and sprayer designs or modifications can assist with these objectives.