Effect of submergence on inorganic phosphorus fractions and available phosphorus in two acid rice soils of Kerala

Abstract

Flooding the soil resulted in an increase in the content of available P, Fe-P, AI-P and saloid P, while the concentration of reductant sDluble P, occluded P and Ca-P showed a gradual decrease. The levels of Fe-P, AI-P, reductant soluble P, occluded P and available P were high in laterite soil compared to kari soil. The mean values of saloid P and Ca-P were relatively high in kari soil.