Abstract
Abstract Six insecticide treatments were evaluated against tarnished plant bugs in cotton at the Macon Ridge Location of the Northeast Research Station. Cottonseed was planted 1 May in 4 rows (40 inch centers) X 50 ft. Treatments were arranged in a RCB design with 4 replications. Insecticides were applied on 7 Jul with a high clearance sprayer calibrated to deliver 6 gpa through TeeJet TX-8 hollow cone nozzles (2/row) at 46 psi. Treatments were evaluated 3, 5, and 7 DAT by sampling the plots with a standard 15 inch diam sweep net. Also, to estimate actual mortality values for the treatments, field-collected tarnished plant bug adults were caged on 5 plants within each plot at 4 DAT. Five adults were introduced into a small nylon mesh cage which was placed over the plant terminal. Mortality of caged tarnished plant bugs was recorded 2 d after infestation (6 DAT). No rainfall was recorded during the test. Data were analyzed with ANOVA, and means were separated according to DMRT.
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