<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Adsorption and desorption of phosphate in some semi-arid tropical indian vertisols"^^ . "The P adsorption and desorption characteristics of four Vertisols belonging to three agriculturally important soil series were studied. The amounts of P adsorbed by the soils at 0.2 μg/ml equilibrium solution P concn was low and ranged from 34.3 to 79.5 μg/g soil. The phosphate adsorption was very well described by Langmuir and Freundlich isotherms. The P adsorbed by a Vertisol (BR-1) fertilized with different rates of P in the previous season (0, 10, 20 and 40 kg P/ha) was similar (34.3-41.3) indicating little effect of fertilization on P adsorption. The correlation studies indicated that the DTPA-extractable Fe was the most important factor accounting for P adsorption in these soils and clay and CaCO3 content were relatively less important. The capacity of the two extractants and EUF (electro-ultrafiltration) to desorb the adsorbed P followed the order: EUF (400V, 80°C)> sodium bicarbonate > EUF (200V, 20°C) > calcium chloride. The average amounts of P desorbed from the four Vertisols using these methods were 74, 63, 50 and 3% resp. of the adsorbed P. In the Begamganj soil, the amount of P desorbed by EUF (400V, 80°C) exceeded 100%, indicating that all of the adsorbed P was desorbable including some native P. The results show that the Vertisols studied have low phosphate adsorption capacity and that the P they adsorbed is easily desorbable"^^ . "1990" . . "23" . "2" . . "Kluwer Academic Publishers"^^ . . . "Fertilizer Research"^^ . . . "01671731" . . . . . . . . . . "K L"^^ . "Sahrawat"^^ . "K L Sahrawat"^^ . . "S"^^ . "Shailaja"^^ . "S Shailaja"^^ . . . . . . "Adsorption and desorption of phosphate in some semi-arid tropical indian vertisols (PDF)"^^ . . . . . . . . . . . "FertilizerRes_23_2_87-96_1990.pdf"^^ . . . "Adsorption and desorption of phosphate in some semi-arid tropical indian vertisols (Image (JPEG))"^^ . . . . . . "preview.jpg"^^ . . . "Adsorption and desorption of phosphate in some semi-arid tropical indian vertisols (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #3974 \n\nAdsorption and desorption of phosphate in some semi-arid tropical indian vertisols\n\n" . "text/html" . . . "Soil Science"@en . .