Abstract
Abstract Sweet potatoes were transplanted on 18 May in a commercial field owned by J. H. Drewer & Sons near Painter, VA. Each plot consisted of 3 35 ft rows bordered on each side by an untreated row with 3 ft between rows. Each treatment was replicated 4 times in a randomized complete block design. Sprays were applied with a 5 nozzle flat fan boom backpack sprayer delivering 17 gal water/acre at 40 psi. Temik was applied in a 12 inch band with a hand-held shaker. The water volume for the Sevin foliar sprays was increased to 35 gal/acre on 10 Aug after the vines began to run. Foliar sprays were initiated when flights of wireworm adults were observed in the black light trap operated at Painter, VA. Treatments were applied on the dates indicated in the table. The center row of each plot was harvested on 8 Oct and yields (50 lb bu/acre) were determined. Twenty-five roots were randomly selected from the marketable roots in each plot and evaluated for insect damage. Damage due to Wireworm, Southern corn rootworm (Diabrotica) and Systena flea beetle feeding was analyzed together as WDS complex.
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