Control of Second Generation European Corn Borer in Corn 1992

Abstract

Foliar treatments of registered and non-registered insecticides for 2nd generation European corn borer were applied to irrigated corn plots in Dixon County, NE on 19 Aug. Liquid formulated insecticides were applied with a Hahn hi-boy calibrated to deliver 19 gal/acre at 30 psi. Granular formulated insecticides were applied with Noble granulator units mounted on the same Hahn hi-boy with 10 inch row banders. Forty-eight h prior to application, 6 black headed egg masses on paper disc were pinned to the middle portion of 10 marked corn plants in each replicate. Experimental design was a randomized complete block with 4 replications. On 21 Sep, 10 marked plants per replicate were dissected from tassel to ground, examined and the number of corn borer larvae recorded.