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ISSN : 2456-8643

Title:
SUSCEPTIBILITY OF THE DIAMONDBACK MOTH, PLUTELLA XYLOSTELLA (L.), FROM WEST JAVA, INDONESIA TO FIVENON-CLASSICAL INSECTICIDES

Authors:
Djoko Prijono, Alfa Miranti Pusparini, Hilmi Arifatil Aini and Munawaroh , Indonesia

Abstract:
This research was conducted to evaluate the susceptibility of Plutella xylostellalarvae from three locations in West Java to five non-classical insecticides, i.e. abamectin, chlorfenapyr, emamectin benzoate, metaflumizone, and spinetoram. The insecticides were tested against second-instar larvae P. xylostella with a leaf-dip feeding method with a 96-h feeding treatment. The number of dead larvae was counted at 96 h after treatmentand larval mortality data was analyzed with the probit method. Based on insecticide LC95,P. xylostella from Cipanas, Cianjur was the least susceptible to all five insecticides followed by that from Pacet, Cianjur and Cisarua, Bogor. P. xylostella from Cipanas, Cianjur was not susceptible to abamectin and chlorfenapyr but that from the other two locations was still susceptible. LC95 of emamectin benzoate against P. xylostella from the three locations was 0.08 to 2.94 times and thatof spinetoram was 0.02 to 0.12 times as high as their respective recommended field rates whereas that of metaflumizone was 5.2- to 22.2- fold higher than its field rate.Thus, P. xylostella from the three locations were still susceptible to emamectin benzoate and spinetoram but were not susceptible to metaflumizone. The insecticides that are still effective against P. xylostella, when needed,should be used in the context of integrated pest management

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