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G.S. Dhaliwal is Professor of Ecology in the Department of Entomology at the Punjab Agricultural University, Ludhiana, India. He did his Ph.D. from the Indian Agricultural Research Institute, New Delhi in 1972, where he was awarded the Gurprasad Pradhan Gold Medal. He remained Postdoctoral Fellow at the International Rice Research Institute, Manila, Philippines for two years. A member of the world Food Prize nominating Academy, Dr. Dhaliwal is Fellow of the National Environmental Science Academy (NESA), society of Pesticide Science India, society of Plant Protection Sciences and Entomological Society of India. Honored with the Best Scientist Award of NESA, he is the founder President of the Indian Society for the Advancement of Insect Science and Society of Biopesticide sciences India, President of the Indian Ecological Society as well as Vice-President of the Indian Society of Allelopathy and Society of Pesticide Science India. He has authored/edited more than 30 books on different aspects of pest management, environment and sustainable agriculture.

Ram Singh is Professor of Entomology at CCS Haryana Agricultural University, Hisar, India. He did his Ph.D. from the Indian Agricultural Research Institute, New Delhi, in 1985. He was awarded the European Commission Post-doctoral Fellowship (1991-1992) and FAO Postdoctoral Training Fellowship (1998) when he worked on various aspects of insect-plant interactions at the Horticulture Research International, Wellesbourne, United Kingdom. A Fellow of the royal Entomological Society, London, he is the recipient of University Gold Medal and Aspee Gold Medal, from HAU, Hisar. He has published more than 90 papers in national and international journals of Scientific repute, and presented his work at several international conferences in India, Netherlands, Scotland and United Kingdom.