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International Journal of Soil Science
  Year: 2007 | Volume: 2 | Issue: 2 | Page No.: 107-118
DOI: 10.3923/ijss.2007.107.118
Relationship Between Phosphatase Activity and Phosphorus Fractions in Agricultural Soils
Ridvan Kizilkaya , Fethi Bayrakli and Abdulkadir Surucu

Abstract:
Soil phosphatases play a major role in the mineralization processes of organic phosphorus. The activity of soil phosphatases can be influenced by numerous factors and soil physico-chemical properties play a key role among them. Our research adds to the growing knowledge on soil acid (ACPA), neutral (NEPA) and alkaline phosphatase with some soil properties and total P (Ptotal), organic P (Porg), bioavailable P and inorganic phosphorus (Pinorg) fractions such as soluble and loosely bound phosphorus (Psoluble), aluminum phosphates (Al-P), iron phosphates (Fe-P), reductant soluble phosphorus (Preductant) calcium phosphates (Ca-P) and strongly adsorbed Fe and Al phosphates (Fixed-P) fractions in agricultural soils of Çarşamba Plain, Turkey. ALPA, 24.6-138.6 μg phenol g-1 3 h-1, was significantly higher than NEPA, 11.5-84.1 μg phenol g-1 3 h-1 and ACPA, 8.6 - 64.1 μg phenol g-1 3 h-1, in the studied soils. Ptotal contents in the soils ranged from 400.8 - 745.0 μg P g-1 with an average 570 μg P g-1. Phosphorus was mostly concentrated in the Pinorg (57%) although it was also present in Porg (12%) and Presidual (31%). On the average, percent of Pinorg associated with different fractions in these soils was in the decreasing order of: Ca-P > Fixed-P > Preductant > Al-P > Fe-P > Psoluble. On the basis of results obtained in this study, phosphatase activies showed significant correlations with the Ptotal, Porg, bioavailable P and some Pinorg fractions (Ca-P and Psoluble). These results suggested that Ca-P is major Pinorg compound on the effects of soil phosphatase activity in agricultural soils of Çarşamba Plain, Turkey.
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How to cite this article:

Ridvan Kizilkaya , Fethi Bayrakli and Abdulkadir Surucu , 2007. Relationship Between Phosphatase Activity and Phosphorus Fractions in Agricultural Soils. International Journal of Soil Science, 2: 107-118.

DOI: 10.3923/ijss.2007.107.118

URL: https://scialert.net/abstract/?doi=ijss.2007.107.118

 
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