1. Mittra BN, Karmakar S, Swain DK, Ghosh BC (2003) Fly ash: a potential source of soil amendment and a component of integrated plant nutrient supply system. International Ash Utilization Symposium, 2003, October 20–22, Centre for Applied Energy Research, University of Kentucky
2. Kumar V, Goswami G, Zacharia KA (1998) Fly ash use in agriculture: issues and concerns. Proceedings of International Conference on fly ash disposal and utilization, vol 1, January 20–22, FAM and CBIP, New Delhi
3. Misra R (1968) Ecology workbook. Oxford and IBH Publishing Co., New Delhi
4. Jackson ML (1973) Soil chemical analysis. Prentice Hall of India Pvt. Ltd, New Delhi
5. Kalra N, Jain MC, Joshi HC, Choudhary R, Harit RC, Vatsa BK, Sharma SK, Kumar V (1998) Fly ash as a soil conditioner and fertilizer. Bioresour Technol 64(3):163–167