Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances.

ABSTRACT: More than 60% of phosphorus (P) taken up by rice (Oryza spp.) is accumulated in the grains at harvest and hence exported from fields, leading to a continuous removal of P. If P removed from fields is not replaced by P inputs then soil P stocks decline, with consequences for subsequent crops. Breeding rice genotypes with a low concentration of P in the grains could be a strategy to reduce maintenance fertilizer needs and slow soil P depletion in low input systems. This study aimed to assess variation in grain P concentrations among rice genotypes across diverse environments and evaluate the implications for field P balances at various grain yield levels. Multi-location screening experiments were conducted at different sites across Africa and Asia and yield components and grain P conc

SUBMITTER: Vandamme E 

PROVIDER: S-EPMC5037189 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature