Timing of Insecticides Applied as Foliar Sprays and in Irrigation Water Against Chilo suppressalis in Korea1

Authors: BANG, YONG HO; KAE, B. M.

Source: Journal of Economic Entomology, Volume 57, Number 5, October 1964 , pp. 706-710(5)

Publisher: Entomological Society of America

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Abstract:

Trichlorfon foliar spray was evaluated to determine the optimum timing to control the first- and second-brood larvae of the Asiatic rice borer, Chilo suppressalis (Walker), in paddy fields. This insecticide reduced the number of withered rice blades in paddies when applied I4 or 19 days after the peak moth flight. Treatment against second-brood borers minimized blade damage when applied 22 days after peak moth flight. Initial toxicity of 8 organophosphorus insecticides to first brood was evaluated in the field when the larvae had already begun feeding within the plant. A field trial was conducted to compare lindane and Zinophos®(O,O-diethyl 0-2 pyrazinyl phosphorothioate applied in the irrigation water of paddy fields with several foliar sprays to prevent damage from first-brood larvae. In addition to field trials. a pot test was conducted in the greenhouse to determine the correct timing for applying lindane dust to irrigation water. Lindane applied in irrigation water, as well as foliar applications of parathion, trichlorfon, phosphamidon, Sumithion® (O,O-dimethyl 0- (3-methyl-4-nitro-phenyl) phosphorothioate). and endrin were effective in preventing damage by recently hatched larvae. The highest yields of milled rice were obtained from plots infested with either first or second brood when insecticides were applied at 14 and 17 days after maximum moth flights.

Document Type: Research Article

Publication date: October 1, 1964

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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