From the South Dakota State University Extension, here's how to differentiate between a crop injury and a bacterial disease. Holcus spot, a minor disease which does not spread, can hide in plain sight.

While off-target dicamba injury to soybean has dominated the news the past year, it is important to recognize that dicamba is not the only Group 4 herbicide (HG4) capable of injuring soybean. HG4 products can induce plant responses at lower doses than most other herbicide groups.

Herbicides should be applied soon to minimize the impact of winter annual weeds on wheat growth and development, says Ohio State University experts.

Herbicide application restrictions exist for several reasons, but of particular importance is the increased likelihood of crop injury if applications are made beyond a specified growth stage.