Abstract
The objective of the study was to evaluate the efficacy of various new and standard insecticides against sweetpotato whitefly (SWF) on upland cotton under desert growing conditions. Cotton was direct seeded on 22 Apr 2014 at the University of California Desert Research and Extension Center, Holtville, CA into single row beds on 40 inch centers. Stand establishment was achieved with furrow irrigation; used thereafter. Plots were two beds wide by 50-ft long and bordered by one non-treated bed. Five replications of each treatment were arranged in a RCB design. Insecticide names formulations and rates treatment for each compound are provided in the tables. The applications were made on 7 and 23 Jul 2014 with a Lee Spider Spray Trac operated at 45 psi delivering 62 gpa. A broadcast application was delivered through 3 TJ-60 11003VS nozzles per bed. The adjuvant, Agri-Dex (Helena Chemical Company, Collierville, TN) at …
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