1Agricultural Research Institute, Rajendranagar, Hyderabad-500 030, Andhra Pradesh, India.
2Department of Plant Physiology, Acharya N G Ranga Agricultural University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh, India.
Department of Entomology, Acharya N G Ranga Agricultural University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh, India.
* Part of M. Sc. thesis submitted by first author to Acharya N G Ranga Agricultural University, Hyderabad