1. Division of Soil Science & Agricultural Chemistry; ICAR-Indian Agricultural Research Institute; New Delhi 110 012 India
2. Centre for Environment Science & Climate Resilient Agriculture; ICAR-Indian Agricultural Research Institute; New Delhi 110 012 India
3. Department of Soil Science & Agricultural Chemistry; Birsa Agricultural University; Ranchi Jharkhand 834 006 India
4. Division of Microbiology; ICAR-Indian Agricultural Research Institute; New Delhi 110 012 India
5. Radio & Atmospheric Science; CSIR-National Physical Laboratory; New Delhi 110 012 India
6. Geo Chronology Division; Birbal Sahni Institute of Palaeosciences; Lucknow 226 007 India