Labeled rates of corn rootworm insecticides have been tested in conventional-till (chisel plowed and field cultivated) fields over the last 7 years. For the last 4 years, these same insecticides have been examined in no-till fields. In all data presented, insecticides went head-to-head in their ability to protect corn roots from corn rootworm larval feeding. Tests were conducted throughout the state in various soil types and under various moisture conditions.
Iowa State University
Oleson, James D. and Tollefson, Jon J., "Corn rootworm insecticide consistency 7-year tests" (1998). Integrated Crop Management News. 2258.
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