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This brochure goes over calibration guidelines for backpack or knapsack sprayers.
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.
This publication, chapter 15 of the 2025 Cotton Information handbook, provides information on sprayer calibration for applying chemicals in cotton production.
