The safeners also protect any shattercane contaminants in the hybrid seed. Repeated annual use may lead to shortening of the control period to a week or less, thereby rendering them ineffective for shattercane control. This enhanced soil degradation effect can develop during the first year of use and persist for 12 to 18 months. Pursuit is effective on shattercane as a soil-applied or postemergence treatment. Do not incorporate Pursuit Plus in corn.
Pursuit usually controls weeds more consistently when incorporated.
Because of the potential for development of resistant weeds, herbicide rotation and herbicide combinations are recommended as standard practices. Passport must be incorporated. Do not use Passport in corn. Treflan, whose active ingredient is trifluralin, and Prowl generally provide good full-season shattercane control in soybeans. Trifluralin is also sold under other brand names.