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Efficiency of certain insecticides, insect growth inhibitors and their combinations against the cotton leafworm larvae in cotton plantations in Egypt



Efficiency of certain insecticides, insect growth inhibitors and their combinations against the cotton leafworm larvae in cotton plantations in Egypt



Mededelingen van de Faculteit Landbouwwetenschappen, Rijksuniversiteit Gent 55(2b): 601-607



Seven pesticides and their binary mixtures were applied to cotton in the field in Egypt and their initial and residual efficacy was studied in larvae of the noctuid Spodoptera littoralis on treated leaves transferred to the laboratory. Insect growth regulators potentiated knockdown of triazophos against 2nd-instar larvae, but did not potentiate the knockdown effects of cyfluthrin or thiodicarb. Methoprene had low initial effects and was apparently rapidly degraded in the field.

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