Amar Bahadur is Assistant Professor in the Department of Plant Pathology, College of Agriculture, Tripura, India. He did his Ph. D. in Mycology and Plant Pathology, at Banaras Hindu University, Varanasi. Pranab Dutta is Associate Professor in Plant Pathology in the School of Crop Protection, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University, Meghalaya, India.