Dr. Raghunath Singh, Principal Scientist (ret.), Central Arid Zone Research Institute, Jodhpur has more than 35 years experience in research and training in Agriculture Extension. Dr Singh started his professional career at the National Institute of Rural Development, Hyderabad in 1972 where his research projects involved extensive field work in the villages across India. He popularized agro-forestry practices in the arid area of Rajasthan and, equally important, he organized training programmes for the extension workers to enhance their knowledge and skill in agriculture. Dr. Singh has written two manuals on Watershed and Transfer of Dry Land Technology. These are highly valued by the drought prone areas of the country. He is the author of Different Extension System in India. He has attended international workshops in Italy and Thailand. In 1977, he was invited by the FAO , Rome as an expert consultant on the ‘Role of Forestry in Combating Desertification’.