BIRTH AND EDUCATION
Dr. Jagdev Singh Grewal was born on 7th July, 1934 at Ludhianan (Punjab). He was awarded M.Sc. (Ag.) degree om soil Science in 1956 and Ph.D. degree in 1964 from Punjab university. He received advance training in Crop production, Soil fertility and Modern Instrumentation in CSIRO Laboratories and the universities at Brisbane, Adelaide, Melborne, Canberra and Sydney.

PROFESSIONAL CAREER
Dr. Grewal started his career as Research assistant in the Department of Agriculture, Himachal Pradesh/Ministry of Food & Agriculture, Govt. of Indian, New Delhi in May, 1957. in October, 1958 he joined as Senior Research Fellow in an ICAR Research Scheme at the College of Agriculture, Ludhiana, Punjab. He Served as Analytical/Asstt. Soil Chemist at Punjab agricultural University, Ludhiana during 1961 to 1968. From August, 1968. to June, 1972 he served as Soil Scientist at IARI, New Delhi. He joined the Central Potato Research Institute (CPRI) in 1972 and served as Principal Scientist and Head, Division of Crop & Soil Science. On 12th April, 1989 he took over as the Director, CPRI, Shimla and retired at the same post on 31 July, 1994. Dr. Grewal organized International training courses on "Modern Methods in Potato Production", SAARC training course on "Late Blight disease of potato" in 1989, True Potato Seed technology training in 1992, 1993 and a Biotechnology Training Course in 1993, besides regular training programs for field functionaries and the farmers from time to time.

HONOURS
Dr. J.S. Grewal is a Life Member of Indian Potato Association of which he was the Secretary in 1978, Vice President in 1979, 1980 and President from 1983 to 1986 and 1989 to 1992. He is also a member of Indian Society of Soil Science. Dr. Grewal organized two National Symposia on potato in collaboration with the Indian Potato association in 1989, 1990.
Dr. Grewal is member of ICAR Scientific Panel for Soil Science, Fertilizer Advisory Committee, Himachal Pradesh, Indian Potato Development Council, HP Seed Potato Development Board and Faculty Member of Fertilizer Association of India. He was also a member of the Advisory Committee of UNDP and Human Resources Development formed for transfer of Root & Tuber Crop Technology Project in 1990.
He was honoured with Fertilizer Association of India (FAI) Award in 1981, PPIC-FAI award in 1983 and Potash Research Institute of India Best Paper Award in 1992. His work on Phosphate in Agriculture was rated of high scientific level by jury of international scientists for IMPHOS Agronomy Award in 1982. He was invited to participate in the International Congress of Phosphorus Compounds held in Brussels, Belgium in 1983.