Spray Mix Calculations
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Liquid pesticide sprayers must apply the proper amount of a carefully mixed spray solution to be effective in controlling weed and insect pests. This publication describes procedures for determining how much pesticide to mix in the tank so the right amount of pesticide will be applied per acre. Pesticides formulated to be applied as sprays are sold both as liquids and as dry materials such as wettable powders. Calculations for mixing liquids are different from calculations for dry materials. This two-part guide provides specific instructions for mixing both liquid and dry pesticides.
Archive version. For the most recent information see extension.missouri.edu.