Consider Split Applications. Keep Your Eyes on the Weather. Research has shown heavy rainfall in the few days following applications may result in significant losses of pesticides, nutrients, and soil to surface water. Do not apply when weather conditions favor drift from targeted areas. Rotate Crops and Use a Combination of Pest Management Practices.
Crop rotation prevents problems with herbicide-resistant weeds and herbicide buildup.
To minimize pesticide resistance, select products with different modes of action. Product diversity can result in lower concentrations of any one substance being found in drinking water supplies. Incorporation is a good practice in some instances although it will reduce overall plant residue coverage. Incoporation can lower herbicide runoff potential dramatically by placing the material below the soil surface where it can bind to soil. This makes it much less likely to runoff as most soil-applied herbicides leave the field in the runoff water.