Studies on the Mineralization of Organic Phosphorus Under the Influence of Crop Growth in Some Soils of Rajasthan

Studies on the organic C/organic P ratios of some soils of Rajasthan show that they are rather low indicating a high mineralizing capability. It is revealed from pot experiments that Sorghum vulgare and Phaseolus mungo have some kind of dependence on total and hydro-lyzable organic P. Mineralization study of rhizosphere and non-rhizosphere soils has indicated that hydrolyzable organic P is not so readily utilized. It is inferred that phytase activity of plant roots helps in an overall release and utilization of organic P.