Anatomical root responses of rice to combined phosphorus and water stress - relations to tolerance and breeding opportunities.

Drought and low P availability are major limitations for rainfed rice (Oryza spp.) production. Root anatomy plays a key role in resource acquisition and tolerance to P and water limitations.

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

More than 60% of phosphorus (P) taken up by rice ( 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.