EFFICACY OF SELECTED INSECTICIDES AGAINST TARNISHED PLANT BUGS ON COTTON, (TEST 7) 2010

On 28 Jul, a foliar insecticide efficacy trial was conducted in a commercial cotton field in Glendora, Mississippi. At time of application, cotton plants were 48 inches tall and approximately in the second week of bloom. Plot size was 4 rows by 75 ft long on 38 inch centers. Statistical design was a randomized complete block with 4 replications. Insecticides were applied with a tractormounted sprayer calibrated to deliver 10.0 gpa at 60 psi through TX-6 Hollow Cone nozzles (2 per row). Application 1 was made on 28 Jul and application 2 on 2 Aug. Two dropcloth samples of 5-row ft each were taken per plot 5 days after treatment (5DAT) and 4 days after treatment (4DAT) for a total sample size of 10-row ft per plot. Data was log transformed and analyzed with ANOVA and means were separated using a Fisher’s Protected LSD (P ≤ 0.05).