Dicamba and Soybeans

Daniel H. Smith, Richard Proost, Nutrient and Pest Management Program, University of Wisconsin-Madison

New seed technology has expanded the usefulness of the herbicide dicamba. This also means more potential for non-tolerant soybeans and sensitive crops to be exposed to dicamba drift, volatilization, and spray contamination. New formulations of dicamba greatly lesson risk, however, only if the herbicide label is followed. The herbicide label is the law and must be read, understood, and followed. These new formulations of dicamba have very strict label restrictions and requirements not often seen. These include, but are not limited to: spray tip selection, weather conditions, spray tank mixes, buffer strips, sprayer clean-out procedures, and maximum weed height at time of application. As farmers begin to utilize this new technology this classic publication details dicamba injury and mimics on soybean:

Printed copies are also available through the NPM Program.