Open AccessField Evaluation of Insecticides Applied as Foliar Sprays for Brown Planthopper Control, IRRI, 1979
Author(s) -
E. A. Heinrichs,
S. L. Valencia
Publication year - 1981
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/6.1.138a
Subject(s) - brown planthopper , transplanting , toxicology , biology , chemical control , brown rice , agronomy , horticulture , sowing , food science , gene , biochemistry
To insure adequate brown planthopper populations a resurgence inducing insecticide at 12.5 g ai/ha was applied to all plots at 20, 34, and 48 days after transplanting (DAT). Insecticides were applied at the rate of 0.75 kg ai/Tia In a spray volume of 300 1/ha at 83 DAT. Effectiveness of the insecticides was based on the % reduction in brown planthopper after spraying. Three coded compound.
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