Soil phosphorus dynamics, acquisition and cycling in crop-pasture-fallow systems in low fertility tropical soils: a review from Latin America - Rao, Idupulapati M.; Barrios, E.; Amézquita Collazos, Edgar; Friesen, Dennis K.; Thomas, Richard J.; Oberson, Astrid; Singh, B.R. (Australian Centre for International Agricultural Research, 2004)