About the Author

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J. N. Srivastava, PhD, is Associate Professor/Sr. Scientist (plant pathology) at Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India. Formerly, he was Assistant Professor/Jr. Scientist (plant pathology) at Sher-e-Kashmir University of Agriculture Sciences and Technology, Jammu and Kashmir, India. He has acted as principal investigator and co-principal investigator for several projects on biological control/integrated disease management. Dr. Srivastava has published many research papers, book chapters, popular articles, practical and technical bulletins, and leaflets and has received many awards for achievement and teaching.A. K. Singh, PhD, is Assistant Professor in the Division of Plant Pathology at Sher-e-Kashmir University of Agricultural Sciences and Technology, Jammu and Kashmir, India. He has been engaged for more than 12 years in teaching and research and is also involved in the transfer of technology through extension activities. He has published more than 30 research papers in national and international journals, one practical manual, several book chapters, and popular articles and has presented many research papers at international, national and regional symposiums and seminars. He is a recipient of several prestigious awards for his research contributions.