Abstract
Abstract Efficacy of 2 systemic insecticides for control of the Hessian fly in hard red spring wheat was evaluated. The experiment was planted 9 Feb at the Texas A&M University Research and Extension Center at Dallas in a Houston black clay soil. Both Thimet 20 G (1.0 lb [AI]/acre) and Furadan 4 F (0.5 lb [AI]/acre) were applied in furrow at planting in liquid form through a microtubule applicator. Plots were 6 by 35 ft and arranged in a randomized complete block design of 4 replicates. The experiment was sampled for Hessian fly infestation on 27 Apr by removing plants from 2 1-ft sections of row from each plot. These samples were returned to the laboratory for inspection, and the number of infested and uninfested culms in each sample was counted. Infestation data were transformed by the square root transformation prior to analysis; nontransformed data are presented. All plots were harvested 14 Jun.
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