Abstract
Abstract Seven insecticidal treatments were examined to determine their efficacy in controlling primarily first-generation (second-generation also evaluated) European corn borer (ECB) in conventionally planted field corn grown on the Vernon Delano Farm in Richmond County, Va. 'Pioneer 3389' corn was planted on a 36-inch row spacing on 28 Apr. Materials were applied either as foliar sprays or granular applications on 9 Jun. Foliar spray concentrates were applied with a CO2-powered compressed-air sprayer, using TeeJet AL8004 nozzels, at 32 psi that delivered 31.8 gal of finished formulation/acre. Granular insecticides were applied directly in the whorl by using a Spred-rite gravity flow granular applicator. Individual plots were 4 rows by 30 ft with 2-row borders and were arranged in a complete randomized block experimental design with 3 replications. Individual plots were evaluated 8 days after treatment and then periodically throughout the remainder of the growing season. All plants in 30 row-ft were inspected for the presence of ECB feeding damage, and 5 random plants/plot were split and observed for the presence of live ECB larvae on 22 Jun. Yield estimates were obtained by harvesting 1 of the 2 center rows of each plot. Yields were adjusted to 12% moisture.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call