Effects of Application Methods, Timing, and Rates of Insecticides and Nematicides on Yield and Control of Wireworms (Coleoptera: Elateridae) and Nematodes (Tylenchida: Heteroderidae) that Affect Sweet Potato

摘要: Soil insecticides, insecticide application procedures, and nematicides were evaluated from 1986 to 1989 in field plots of ‘Jewel’ sweet potatoes, Ipomoea batatas L., control wireworms, ( Conoderus spp . Coleoptera: Elateridae), the rootknot: nematode, Meloidogne incognita (Kofoid & White) Chitwood. Experimental procedures for insecticides preplant broadcast incorporate, postplant band at root enlargement. The least injury harvested potatoes by wireworms nematodes occurred treated with nematicide 1, 3-0 chlorpyrifos applied as a subsequent diazinon Sweet that received no or aldicarb fenamiphos had more wireworm nematode infestation than injected 1,3-0. Chlorpyrifos gave better incorporated.