1. Adams F (1974) Soil solution. In: Carson EW (ed) The plant root and its environment. University Press of Virginia, Charlottesville, pp 441–481
2. Nair KPP (1984) Towards a better approach to soil testing based on the buffer power concept. In: Prevel P-M
3. (ed) Proceedings of 6th International Colloquium for the Optimization of Plant Nutrition, Vo 4, 2-8 September 1984. Montpellier, France, pp 1221-1228
4. Nair KPP (1992) Measuring P buffer power to improve routine soil testing for phosphate. Eur J Agron 1(2):79–84
5. Nair KPP (2019) Combating global warming – The role of crop wild relatives for food security. Springer Nature Switzerland AG