Aphid and Flea Beetle Control with Bay NTN 33893 Applied as Soil Drench and Foliar Treatments, 1990

Abstract

Abstract Various rates and application methods for BAY NTN 33893 were tested for TA and TFB control on tobacco at the VPI & SU Southern Piedmont Agricultural Experiment Station, Balckstone, Va. Tobacco was transplanting into a Chesterfield-Mayodan-Bourne sandy loam soil on 3 May. Experimental plots, 20 ft (12 plants) × 4 ft (1 row), were arranged in a randomized complete block design with 4 replications. Soil drench treatments were applied at 4 fl oz of mixture/plant (204 gal/acre) using a measuring cup to simulate transplant water applications. Foliar band treatments (Fol-band) were applied over the row immediately after transplanting using a CO2-pressurized backpack sprayer delivering 36 gal/acre through a 8004E tip at 40 psi. TA were counted on 4 upper leaves of 5 plants/plot once every 8-13 days through 19 Jul. TFB feeding holes were counted on 5 leaves/plot on 21 May. Data were analyzed by analysis of variance (ANOVA, SAS 1985) and significant means (P - 0.05) were separated using DMRT. TA data were transformed to Log10(X + 1) before analysis. Actual means are presented.