Research Objective
The in-crop control (Solo®) and spring-applied herbicide treatments glyphosate, glyphosate + heat, and glyphosate + Goldwing® were the least effective and inconsistent in controlling kochia, wild mustard and volunteer canola.
All herbicide combinations with fall application, followed by spring application, had greater phytotoxicity to all three weeds and other weeds compared to spring burn-off and in-crop application. Fall application of Fierce® followed by spring application of Goldwing® + glyphosate was the most effective in controlling the three target weeds, as well as other weed species. This combination also resulted in a 12% yield increase compared to the control of spring-applied Solo®. Other combinations of fall- and spring-applied herbicides were also effective at controlling the listed weed species and produced similar yield increases compared to the control.