Flea Beetle and Aphid Control with Transplant Water Treatments on Burley Tobacco, 1995

Abstract

Abstract This experiment was conducted at the VPI & SU Southwest Virginia Research and Extension Center, Glade Spring, VA, to evaluate various transplant water and transplant seedling drench treatments for control of TFB and TA on burley tobacco. Tobacco was transplanted into experimental plots, 4 X 30 ft (1 row X 15 plants), on 23 May. Five treatments and an untreated control were established in a RCB design with 4 replications. Plots were separated by single untreated guard rows and blocks were separated by 5 ft vacant alleys. Immediately after transplanting Orthene and Admire were applied in 8 fi oz/plant (340 gpa) using a bucket and a dipper. TA populations were rated on a scale of 0-7 where 0 = no TA, 1 = 1-10 TA, 2 = 11-50 TA, 3 = 50-100 TA, 4 = 101-500 TA, 5 = 501-1000 TA, 6 = 1001-5000 TA, and 7 = more than 5000 TA. Ratings were made for the upper 4 leaves of 10 plants per plot about once a wk from 7 to 10 wk after transplanting. TFB and TFB feeding holes were counted on 5 plants/plot at 7, 14 and 21 d after transplanting. Data were analyzed by ANOVA and significantly different means were separated by WD (K-ratio = 100). Actual means are presented. TA populations were very low throughout the study.