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, and used thereafter. Plots were two beds wide by 50 ft long and bordered by one nontreated bed. Five replications of each treatment were arranged in an RCB design. Insecticide names formulations and rates treatment for each compound are provided in the tables. The applications were made on 7 and 23 July 2014 with a Lee Spider Spray Trac operated at 45 psi delivering 62 gpa. A broadcast application was delivered through three TJ-60 11003VS nozzles per bed. The adjuvant, Hasten Modified Vegetable Oil (Wilbur-Ellis Company, PO Box 16458, Fresno, CA), at 16 fl oz …
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