Dr. G. R. Mahajan is working as a scientist (soil science) at ICAR- CCARI, Old Goa and has an experience of 8 years on coastal agriculture in general and assessment and management of soil salinity of coastal region in particular. He completed his Masters in Agricultural from Banaras Hindu University, Varanasi, Uttar Pradesh and Ph.D. from Indian Agricultural Research Institute, New Delhi. He has published 24 research articles and recipient of national and international award like ICAR Jawaharlal Nehru Award for Outstanding Doctoral Thesis Award and International Plant Nutrition Institute Scholar Award. He has developed six mobile phone apps to assist farmers on agricultural input (fertilizer, seeds, etc.) management.