• Emeritus Scientist, Department of Science & Technology (Government of India) and Indian Council of Agricultural Research
• Director of 3 crop/cropping systems-based ICAR institutes (Central Plan...voir plus• Emeritus Scientist, Department of Science & Technology (Government of India) and Indian Council of Agricultural Research
• Director of 3 crop/cropping systems-based ICAR institutes (Central Plantation Crops Research Institute, Kasaragod; Central Potato Research Institute, Shimla; Central Tuber Crops Research Institute, Trivandrum)
• Former Joint Director, CPCRI Regional Station, Vittal
• Former Section / Division Head in Central Potato Research Institute and Central Rice Research Institute
• Editor of 6 books; author of ca. 190 scientific papersvoir moins