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Water Quality and Sprayer and Spreader Calibration

By: Arthur Bruneau, L. T. Lucas, C. E. Hartwiger, G. R. Taylor

Proper application of pesticides and fertilizers, which protects water quality, is possible only with a sprayer or spreader that is accurately calibrated. Pesticides applied with equipment that has not been calibrated may be misapplied by more than 10 percent. That may lead to repeat applications, damaged plants, excess cost, and contamination of the environment.