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Various foliar and soil insecticides to control C-biotype Schizaphis graminum (Rondani) on grain sorghum were studied during 1972–73 in southwestern Kansas. Single applications of most foliar sprays effectively reduced greenbug populations in dryland sorghum, but residual activity varied. Lower rates of disulfoton, oxydemetonmethyl, dicrotophos, phosalone, Monitor® (O S-dimethyl phosphoramidothioate, BayHox 1901 (2-[(ethylthio)methyl]-phenyl methylcarbamate), and Dyfonate® (O-ethyl S-phenyl ethylphosphonodithioate) were as effective as higher rates with no significant differences between them. Foliar treatments significantly increased sorghum yields in 1973 by reducing greenbug numbers. Most applications of soil systemic insecticides significantly reduced greenbug populations over the check. Plots treated with disulfoton granules had the fewest greenbugs. All soil systemic insecticides increased grain yields in 1973 by lowering greenbug populations, but only disulfoton, Diamond Shamrock DS-15647 (3,3-dimethyl-1-(methylthio)-2-butanone-O-[(methylamino)carbonyl] oxime), and carbofuran increased yields significantly. No insecticide tested reduced plant stands.
Document Type: Research Article
Publication date: August 1, 1974
More about this publication?
Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.