1. Adams JF, Odom JW (1985) Effects of pH and phosphorus rates on soil solution phosphorus and phosphorus availability. Soil Sci 140:202–205
2. Benians G, Scullion P, Fitzhugh GR (1977) Concentrations and activities of ions in solutions displaced from basaltic soils. J Soil Sci 28:454–461
3. Bhadoria PS, Samal D, Steingrobe B, Claassen N (2009) Phosphorus uptake kinetics, root-shoot relations and P-flux of groundnut and maize grown in solution culture. In: Proceedings of the XVI international plant nutrition colloquium. UC Davis, USA. http://escolarship.org/uc/item/9p6432sv . (visited 31 May 2012)
4. Blecker SW, Ippolito JA, Barrett JE, Wall DH, Virginia RA, Norvell KL (2006) Phosphorus fractions in soils of Taylor Valley, Antarctica. Soil Sci Soc Am J 70:806–815
5. Börling K, Barberis E, Otabbong E (2004) Impact of long-term phosphorus fertilization on accumulation, sorption and release of phosphorus in five Swedish soil profiles. Nutr Cycl Agroecosyst 69:11–21