Despite company claims, every spray is weak on at least a few weeds. Some come with a serious risk of crop injury. Others are expensive, or have tight application windows. Deen and colleague Peter Sikkema have worked out the following eight questions to help growers narrow down their post-emerge options. And don't forget to add in the cost of surfactants.
Pursuit has lots of residual control.
Pardner, Roundup and many others have none. In between are several sprays including the new Distinct, Viper and Reliance. Without residual, timing must be precise. Sprays such as Peak, Striker and Patriot are only some of the herbicides that can prevent you from rotating into crops ranging from sugar beets to vegetables. Ultim can injure corn in hot weather.