Bioefficacy of some insecticides against Bemisia tabaci (genn.) on brinjal
2013
Omprakash, S. | Raju, S.V.S.
A field experiment was conducted on brinjal to evaluate few insecticidal molecules, viz., azadirachtin, imidacloprid, thiamethoxam, spinosad and triazophos alone and in combination with azadirachtin against the field populations of B.tabaci. The results indicated that neonicotinoids showed higher efficacy against B. tabaci in reducing pest population. Cumulative mean efficacy after third insecticidal spray indicated that thiamethoxam 25 WG (58.09%) and imidacloprid 17.8% SL (55.45%) were highly effective followed by triazophos 40 EC (54.19%). Combination treatments like azadirachtin + thiamethoxam, azadirachtin + imidacloprid, azadirachtin + triazophos and azadirachtin + spinosad showed moderate efficacy and azadirachtin at 1500 ppm (43.26%) was the least effective.
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