1. Division of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, New Delhi, India
2. National Bureau of Soil Survey and Land Use Planning, Regional Center, Jorhat, Assam, India
3. Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, Uttar Pradesh, India
4. Division of Integrated Farming System Management, ICAR-Indian Institute of Farming Systems Research, Meerut, Uttar Pradesh, India