Planting time applications of systemic insecticides on grain sorghum for greenbug control: interactions with herbicides and effect on predators (Hemiptera (Homoptera): Aphididae)

Feese, H. and Wilde , G. (1975) Planting time applications of systemic insecticides on grain sorghum for greenbug control: interactions with herbicides and effect on predators (Hemiptera (Homoptera): Aphididae). Journal of the Kansas Entomological Society, 48 (3). pp. 396-402.

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Abstract

Since Schizaphis graminum (Rond.) became a serious pest of sorghum in 1968, it has been the usual practice in Kansas to apply systemic insecticides at planting time. The possibility of adverse interactions between such insecticides and herbicides applied at the same time, and of adverse effects of the insecticides on insect predators of S. graminum, were investigated in the laboratory in Kansas. The herbicides propachlor [2-chloro-N-(1-methylethyl)-N-phenylacetamide] alone or mixed with atrazine [6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine], terbutryn [N-(1,1-dimethylethyl)-N'-ethyl-6-(methylthio)-1,3,5-triazine-2,4-diamine] alone or mixed with propazine [6-chloro-N,N'-bis(1-methylethyl)-1,3,5-triazine-2,4-diamine], and a mixture of atrazine and norea [(3a alpha ,4 alpha ,5 alpha ,7 alpha ,7a alpha )-N,N-dimethyl-N'-(octahydro-4,7-methano-1H-inden-5-yl)urea] were completely compatible with disulfoton, phorate or carbofuran and did not impair the effectiveness of the insecticides against S. graminum. When caged on treated sorghum plants infested with greenbugs, the predators Orius insidiosus (Say) and to a less extent Chrysopa spp. were killed by a granular formulation of disulfoton, but the larvae of Hippodamia convergens (Guer.) and adults of Nabis spp. were not affected

Item Type: Article
Author Affiliation: Department of Entomology, Kansas Agricultural Experiment Station, Kansas State University, Manhattan, KS 66506, USA
Subjects: Plant Protection
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 14 Sep 2012 08:23
Last Modified: 14 Sep 2012 08:24
URI: http://eprints.icrisat.ac.in/id/eprint/7901

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