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Efficacy of different insecticides as granules and foliar sprays for control of Rhopalosiphum maidis (Fitch) on barley was studied for 2 years during 1969–70 and 1970–71 at Delhi. Among the granular insecticides applied in the seed furrow, Cytrolane® (cyclic propylene P, P-diethyl phosphonodithioimidocarbonate), disulfoton, and phorate (1 kg AI/ha) gave effective control of the pest and resulted in 22–26% higher yields. Two foliar spray applications of methyl parathion, fenitrothion, endosulfan, methyl demeton lindane, diazinon, dimethoate, malathion, and phosphamidon effectively reduced the aphid population and produced 14–27% (500–1000 kg) higher yields of grain. In both years, peak aphid population occurred during late February. The rise and fall of aphid populations in untreated plots was influenced markedly by temperature, atmospheric dryness, and predators.
Document Type: Research Article
Publication date: April 16, 1973
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.