Sprayer calibration, part 2--band sprayers

"Pesticides are effective only after they have been applied in the correct amount. Too much pesticide can cause crop injury and leave harmful residues. Too little pesticide may cause inadequate and undependable control. The number of gallons applied per acre depends on (1) nozzle size, (2) pressure of the spray, and (3) ground speed of the sprayer. Spray calibration is a procedure to determine how much water and chemical is applied per acre."--First page.Maurice R. Gebhardt (Agricultural Research Service, USDA)Reviewed and reprinted 7/87/5