Abstract
Abstract Celery seedlings were transplanted 19 Sep into double-row beds (10-inch rows, 40-inch beds) at the Texas Agricultural Experiment Station, Weslaco, Tex. Soil type was Hidalgo sandy clay loam. Plots measured 25 ft by 2 beds and were replicated 4 times in a randomized complete block design. Insecticide treatments were applied on 5 Mar through a CO2-powered boom sprayer calibrated to deliver 10 gal/acre (40 psi, two 83077 flat-fan nozzles per plot, 2 mph). Three to 5 h following the treatment application, 10 second- and third-instar beet armyworm larvae were caged on each of 2 randomly selected plants within each plot. Efficacy was evaluated 7 days following each application by counting larvae that remained alive in the cage.
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