Abstract
Abstract Insecticides for rice stink bug control were evaluated at the Texas Agricultural Experiment Station Research Farm near College Station, TX. Seed of hybrid sorghum (AT x 399 X RT x 430) was planted 16 Jun on rows spaced 30 inches apart. Insecticide treatments were compared in plots, 8 rows X 40 ft long, arranged in a RCB design with 4 replications. Insecticides were applied to the middle 2 rows of plots when sorghum was in the dough stage. Insecticides were applied on 9 Sep between 0930 and 1100 h CDT by using a hand-held backpack sprayer with 4, TX-3 hollow cone nozzles at 35 psi, producing a finished spray volume of 4.9 gpa. Stink bug abundance was assessed by using the “beat bucket” technique to sample 10 panicles per plot. A pre-treatment count of rice stink bug nymph and adult abundance was made just prior to insecticide applications. Post-treatment counts were made on 10 (1 DAT) and 12 Sep (3 DAT). Data were statistically analyzed by using ANOVA and LSD. Percent control was calculated by using the Henderson and Tilton (1955) sampling formula.
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