Phosphate adsorption-desorption in selected vertisols

Shailaja, S (1989) Phosphate adsorption-desorption in selected vertisols. Masters thesis, Andhra Pradesh Agricultural University.

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Supervisors

Supervisors NameSupervisors ID
Medakkar, SAPAU
Kondap, S MAPAU
Sahrawat, K LICRISAT
Burford, J RICRISAT

Abstract

Phosphate (P) adsorption -desorption characteristics of surface samples of 4 Vertisols were studied. The phosphate adsorption capacity of these soils was low, and ranged from 35 to 80 ug g-l of soil at 0.2 ug ml- l equilibrium solution P concentration. The Langmuir equation described the adsorption reasonably accurately at all solution P concentrations, and was much more accurate than the Freundlich, Gunnary, Tempkin and Dubinin-Radushkevich equations. P adsorption at 0.2 ug P ml- l equilibrium solution P concentration calculated from Langmuir isotherm was positively correlated with DTPA extractable Fe, but was not correlated with clay content. Neither P fertilization...

Item Type: Thesis (Masters)
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Others > Soil Science
Depositing User: Mr T L Gautham
Date Deposited: 27 Oct 2011 08:44
Last Modified: 27 Oct 2011 08:44
URI: http://oar.icrisat.org/id/eprint/2669
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