Has Iowa State University tested the performance of reduced rates?
During 1998 and 2000 at five locations across Iowa, several insecticides were evaluated at reduced rates. Counter, Force Lorsban, and Thimet were applied at full and 3/4-label rates. Aztec was applied at full and 1/2-label rates. During 1994-1998, liquid Furadan 4F was applied during the first 2 weeks of June on postemergence corn. The full rate was applied as a broadcasted treatment over the row. A 1/4-rate was applied as a 7-inch band at the base of the plant. A nozzle was positioned on each side of the row to achieve this basal treatment. The same amount of active ingredient per unit area of soil was applied with each treatment. Thirteen gallons per acre of finished spray was applied in each treatment. Treatments were incorporated by cultivation in all but the 1998 test (no incorporation).
