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The resistance of certain cotton pests to organic insecticides in the Canete Valley


, : The resistance of certain cotton pests to organic insecticides in the Canete Valley. Rev. peruana Ent. agric, Lima, 1: 1, 47-51

The following is based on the author's summary. Chlorinated-hydrocarbon insecticides, which had proved effective against pests of cotton in the Canete Valley of Peru since 1947, gave less satisfactory results in 1952, when dusts of gamma BHCs at 0.45 1b. per acre gave only 28 per cent. control of Aphis gossypii Glov., whereas 0.28 1b. formerly gave up to 96.5 per cent.

US$29.90


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