Peter Sikkema says the reason for less than acceptable weed control with herbicides is frequently outside of everybody’s control, but sometimes it’s a result of human error.

Why herbicide effectiveness varies

Peter Sikkema discusses how to hedge your bets when controlling weeds

Herbicides are incredible weed control tools, but their effectiveness can be significantly degraded by a variety of environmental, human and other factors.







Tar spot can dry down corn quickly, but yield will be lost.

Tar spot continues on the move in Ontario corn

The disease can be controlled by timely application of fungicides

Tar spot spread across Ontario in 2024, skipping past Toronto and it was also found in Quebec. The fungal disease can have a 20 to 80 bushel impact on corn yields.