Abstract
Abstract This field test was conducted in conventionally planted and tilled soybeans at the Wiregrass Substation of Auburn University in Alabama. Eight treatments and an untreated control were replicated 4 times in a randomized complete block design. Each 0.021-acre-plot was 6 rows wide (36-inch spacing) and 50 ft long. Replicates were separated by a 10-ft mowed alley. Treatments were applied in water 13 Sep from a boom sprayer equipped with 2 TX-10 hollow-cone nozzles/row operating at 60 psi and delivering 8 gal/acre. Insect populations were sampled by placing a standard 3-ft beat sheet between the rows and beating both rows. Soybean looper larvae were identified and classified as small (first and second instar), medium (third and fourth instar), or large (fifth instar or older). They were then counted and recorded. Three samples from each plot were taken prior to treatment and at 5 and 7 DAT (18 and 20 Sep).
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