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Changes in Solid Phase Properties of Acid Soils as M fected by Limestone,Gypsum, Palm Oil Mill Effluent and Rock Phosphate Applications


Citation

Jusop, Shamsuddin and I., Jamilah and Abdul Hamid, Sharifuddin and Bell, L. C. (1992) Changes in Solid Phase Properties of Acid Soils as M fected by Limestone,Gypsum, Palm Oil Mill Effluent and Rock Phosphate Applications. Pertanika, 15 (2). pp. 105-114.

Abstract / Synopsis

Ultisols and Oxisols in Malaysia are dominated by kaolinite and sesquioxides, which are characterized by high Al saturation, low ECEC and Ca and/or Mg deficiencies. These acid soil infertility factors are limiting to annual crop production on the soils. A pot experiment was conducted to investigate the chemical changes in solid phase propmies of some Malaysian Ultisols and Oxisols affected by limestone, gypsum, palm oil mill effluent and rock phosphate applications. Results obtained showed that the negative charge on the clay surface of the untreated samples increased with an increase in soil H. Limestone, palm oil mill effluent and rock phosphate applications increased soil pH, resulting in an increase in CECw The CECIJ in the palm oil mill effluent treatment was further increased by an increase in the soil solution ionic strength and by the protonation of carboxyl and/or hydroxyl groups present in the organic matter. Exchangeable Ca and Mg increased, while exchangeable Al decreased significantly after palm oil mill effluent and limestone applications. It was observed that exchangeable K was reduced by gypsum and rock phosphate applications.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Keywords: variable-charged minerals, limestone, gypsum, effluent, rock phosphate, aluminium, calcium, magnesium.
Depositing User: Nur Izzati Mohd Zaki
Date Deposited: 19 Nov 2009 12:37
Last Modified: 27 May 2013 15:04
URI: http://psasir.upm.edu.my/id/eprint/2928
Statistic Details: View Download Statistic

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