Minimizing phosphorus sorption and leaching in a tropical acid soil using Egypt rock phosphate with organic amendments

Ch'ng, Huck Ywih
Ahmed, Osumanu Haruna
Nik Majid, Nik Muhamad

Publication date

June 2016

Publisher

College of Agriculture, University of the Philippines Los Banos

Abstract

The study examined changes in soil phosphorus sorption and desorption, pH buffering capacity, and phosphorus leaching upon application of organic amendments (chicken litter biochar and pineapple leaf residues compost). The phosphorus sorption data were fitted to the Langmuir equation. Results revealed that at phosphorus concentrations of <10 mg L⁻¹, sorbed phosphorus was significantly increased under treatments with organic amendments whereas more phosphorus was desorbed with increasing phosphorus application rates (10 to 20 mg L⁻¹). The decrease in phosphorus sorption was due to precipitation of exchangeable aluminum and extractable iron at the highly negatively charged humic substances functional group surfaces of the organic amendments. ...

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Minimizing phosphorus sorption and leaching in a tropical acid soil using Egypt rock phosphate with organic amendments

Abstract

Extracted data

Minimizing phosphorus sorption and leaching in a tropical acid soil using Egypt rock phosphate with organic amendments

Abstract

Extracted data

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