Previously we discussed the possible benefits of using a pre-emergence soil applied herbicide application in a 2-pass weed management plan.  Those benefits include protecting yield, providing a wider window for a post-emergence application and as a resistance management strategy.

In this installment we look at the effect of weed emergence, following a pre-emergence application, on soybean yield and examine the critical time frame to maintain soybean weed- free.

WF 2

WF 3

WF 4

WF 5

WF 6

WF 7

WF 8

WF 9

WF 10

Please stay tuned for more from “Situational with Sikkema” in the coming weeks.

Thanks to Grain Farmers of Ontario for their support of this research and our research program.

Post prepared for Peter Sikkema by Todd Cowan, CCA-ON, Huron Research Station/University of Guelph