Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221 005, Uttar Pradesh, India; e-mail: rajeshsingh_bhu@yahoo.co.in
Present Address: Regional Research Station (Hill Zone), Uttar Banga Krishi Vishwavidayalaya, Kalimpong, Darjeeling734 301, West Bengal, India; E-mail: dhiman_mukherjee@yahoo.co.in
