Green bug1 Control on Wheat in 1967-69

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Schizaphis graminum (Rondani) on wheat can still be effectively controlled using the standard parathion and methyl parathion treatments, however, additional insecticides were screened to determine their effectiveness so that alternate effective treatments would be available if these standard chemicals became unusable. Applications of ULV monocrotophos at 0.06, 0.13 and 0.25 lb active ingredient per acre were comparatively ineffective in 1967 studies, while a higher volume spray of parathion and ULV parathion at 0.5 lb gave significant green bug reductions. Two experiments conducted in 1968 showed higher volume sprays of monocrotophos applied at rates of 0.25 and 0.5 lb AI/acre, and disulfoton LC at rates as low as 0.25 lb to be as effective as 0.5 lb of methyl parathion. Studies in 1969 indicated that low temperatures may limit the effectiveness of the compounds tested as the best material, disulfoton at 0.25 lb AI/acre, only reduced the green bug population by 7S%. Counts of parasites and predators indicated that their populations were not substantially lowered by application of any of the compounds tested in 1969.

Document Type: Research Article

Publication date: June 1, 1972

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.
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