Abstract
Abstract Naturally infested whorl-stage yellow field corn was treated on 19 Jun. Fifteen insecticides and one untreated control were arranged in a randomized complete block design with 5 replications. All plots consisted of 4 contiguous rows, each 12 m in length with 76 cm row spacing. Sprays were applied in water (20 gal/acre) with a CO2 powered system held above the canopy. Each treated row received spray from 1 nozzle (HC-12) suspended over the row applied at 40 psi. Granular products were applied manually with a funnel and band spreader system. Band spreaders were positioned approximately 5 cm above the whorl and distributed products over a 20 cm band. Thirty plants from the 2 center rows were destroyed and examined from 7 through 11 Jul. Shotholing and tunnels/30 plants were recorded.
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