Department of Plant Protection, Tamil Nadu Agricultural University, Horticultural College and Research Institute, Periyakulam - 625 604, Tamil Nadu, India.
*Corresponding author's present address: Tamil Nadu Agricultural University, Department of Entomology, Agricultural College and Research Institute, Madurai - 625 104, Tamil Nadu, India. E-mail: nmuthu64@yahoo.com
Present address: 1Department of Agricultural Entomology, Tamil Nadu Agricultural University, Agricultural College and Research Institute, Madurai - 625104, Tamil Nadu, India.
Buprofezin as foliar spray at 1125 and 1500 ml/ha was tested for its bio-efficacy against grape mealy bug Maconellicoccus hirsutus (Green) in comparison with carbosulfan and chlorpyriphos during rabi 2002 and 2003 seasons. Buprofezin reduced the nymphal and adult population and bunch infestation of M. hirsutus and increased the fruit yield as compared to untreated check and recommended insecticides. As the efficacy of both the doses was statiscally on par, the lower dose of 1125 ml/ha is sufficient to effectively mitigate the mealy bug colonies. There were no phytotoxic symptoms observed on any part of the treated plants due to any of the insecticides.
