Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi, 110012
*Present address: Department of Soil Science and Agricultural Chemistry, Birsa Agricultural University, Ranchi, Bihar, 874006
In greenhouse study, total P removal by rice and wheat was found to be correlated significantly with phosphorus supply parameter and cumulative release of phosphorus in three soils differing in their physicochemical characteristics. A highly significant linear relationship was also found between cumulative release and supply parameter indicating that either of these two indices can successfully define P supplying capacity of the soil. Results show that a lower bonding energy constant value is indicative of higher P uptake by crops.
Phosphorus supply parameter, cumulative release of P, quantity-intensity relationship, rice and wheat, uptake of phosphorus
