Individual herbicides may require different adjuvants for best performance. Choose tank mixes that have compatible adjuvants under drought conditions. Separating grass and broadleaf herbicides will help prevent loss of grass control due to herbicide antagonism. Reduced herbicide rates are less likely to perform well under conditions of weed stress. Dry soils after herbicide application can increase the chance of carryover.
Soil moisture is essential for microbial and chemical breakdown of herbicides.
A period of dry soil conditions can reduce herbicide breakdown and cause injury to the following crop. Weed control during drought conditions requires additional management and flexibility on the part of the producer. Herbicide programs and cultivation may need to be modified to provide acceptable weed control. Always read and follow herbicide label directions to maximize weed control and minimize injury to the current or following crop. The clouds appeared on the horizons with a thunderous roar.