Agricultural Research Division of IANR


Date of this Version



Arthropod Management Tests, 44(1), 2019, 1–2

doi: 10.1093/amt/tsz090

Section F: Field & Cereal Crops


his is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License

© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America.


The objective of this field trial was to determine if application timing affects the efficacy of single applications of foliar insecticides at preventing feeding damage by the western bean cutworm (WBC), an important pest of corn and dry beans in the North American Corn Belt. This study was located at the University of Nebraska- Lincoln’s Henry J. Stumpf International Wheat Center in Perkins County, NE (40.856851°N, −101.701335°W). The experimental design used was an RCB design with a total of 10 treatments (three insecticides applied at three application timings, plus an untreated check) and four replications; the treatment design was an incomplete 4 × 3 factorial in which the UTC occurred during the ideal application timing only. Seeds of DKC62-95 (Monsanto Company, St. Louis, MO), a non-Bt hybrid with RR2 herbicide tolerance, were planted on 5 May 2018 using a commercial 8-row planter at 32,000 seeds/acre at approximately 1.40–1.75 inches deep in 30-inch rows. Individual plots measured 20 ft (8 rows) wide x 35 ft long. Standard agronomic practices for the region were followed for irrigation, fertilization, and weed management inputs. No insecticide applications were made other than the experimental treatments.