BIO-EFFICACY OF NEEM OIL ON MEALY BUG CENTROCOCCUS INSOLITUS GR. (HEMIPTERA: PSEUDOCOCOIDAE) INFESTING BRINJAL

摘要

Neem oil rich in azadirachtin has been tested on mealy bug population in brinjal field at different concentrations, viz., 0.25%, 0.50%, 0.75% and 1% levels. One per cent neem oil spray reduced mealy bugs population to 1.84 insects/leaf at 7th day after spray against the pre observation values of 8.31 insects/leaf. Reduction of 50% insects population was also recorded with 0.75% of neem oil spray at 3rd and 5th day observations.