1. Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Agricultural Research Station, Kovilpatti, India
2. V.O.Chidambaranar Agricultural College & Research Institute, Killikulam, India
3. Agronomy, Tamil Nadu Agricultural University, Agricultural Research Station, Kovilpatti, India
4. Soil and Water Conservation (SWC), Tamil Nadu Agricultural University, Agricultural Research Station, Kovilpatti, India
5. ICAR-AICRP on Dryland Agriculture, Agricultural Research Station, Kovilpatti, India
6. ICAR-All India Co-ordinated Research Project on Dryland Agriculture, CRIDA, Hyderabad, India