Phosphorus uptake of rice plants is affected by phosphorus forms and physicochemical properties of tropical weathered soils

Phosphorus (P) deficiency is a major constraint for rice production in the tropics. Field-specific P management is key for resource-limited farmers to increase yields with minimal inputs. We used soil P fractionation analysis to identify the relevant factors controlling P uptake and the responses to P fertilization of rice in flooded and highly weathered soils. Phytometric pot-based experiments and a modified Hedley fractionation analysis were...