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Paper Information

Journal:   ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION   2016 , Volume 5 , Number 4; Page(s) 79 To 95.
 
Paper: 

DETERMINATION OF ORGANIC P FRACTIONS IN A CALCAREOUS SOIL AS AFFECTED BY WHEAT CULTIVATION AND ORGANIC AMENDMENTS

 
 
Author(s):  MOEINI M., HEJAZI MEHRIZI M.*, JAFARI A.
 
* DEPT. OF SOIL SCIENCE AND ENGINEERING, SHAHID BAHONAR UNIVERSITY OF KERMAN
 
Abstract: 

Background and Objectives: Phosphorus (P) deficiency is frequently reported in many regions of the world, certainly in calcareous soils of arid and semi-arid regions. In calcareous soils, the soluble P is rapidly converted to insoluble precipitates of Ca-phosphates due to high content of CaCO3. Soil organic phosphorus (SOP), which can comprise up to 80% of the soil P, plays a significant role in P nutrition of crops specially in high P fixing calcareous soils. Soil organic P is a heterogeneous mixture of organic substances and the different fractions of SOP might have different effects on soil fertility and quality. Organic amendments such as sewage sludge and animal manures can be recycled to agricultural lands as a source of organic matter and phosphorus. Organic amendments may influence P dynamics in soils. This study was conducted to investigate the short-term (100 days) effects of some organic amendments on the soil organic P (SOP) fractions and their availability to wheat in a calcareous soil.
Materials and Methods: A calcareous soil, which suffer from P deficiency, was collected in summer 2013 from Kerman province, air-dried, crushed and transferred to pots including two levels of sewage sludge (SS), cow manure (CM), poultry manure (PM) and no organic amendment (CO) in four replicates. Four wheat seeds were sown in each pot and kept for 100 days in a controlled greenhouse. At harvest, shoot dry weight and shoot P concentration were measured. Soil organic P fractions including labile organic P (LOP), moderately labile organic P (MLOP), moderately non-labile organic P (MNLOP) and non-labile organic P (NLOP) was also measured.
Results: Soil application of organic amendments significantly increased shoot dry weight and shoot P uptake of plants. The highest values were found in soil amended with 4% level of sewage sludge. Organic amendments markedly (P<0.05) increased all organic P fractions compared with the control. Moderately labile organic P was affected by organic amendments more than the other fractions. Regardless of applied levels, the magnitude effect of organic amendments on different OP fractions was ranked in the following order: SS>CM>PM. A significant correlation was observed between labile organic P with soil available P (r=0.92**), P uptake by wheat (r=0.92**) as well as between MLOP and shoot dry weight (r=0.96**), showing that labile and moderately labile organic P fractions have more contributors to available P than the others.
Conclusion: These results suggest that adding of organic amendments can increase P availability and plant growth due to increase in soil OP fractions especially labile and moderately labile organic P fractions.

 
Keyword(s): ORGANIC AMENDMENTS, ORGANIC P LABILITY, SEQUENTIAL EXTRACTION, SUSTAINABLE AGRICULTURE
 
 
References: 
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Click to Cite.
APA: Copy

MOEINI, M., & HEJAZI MEHRIZI, M., & JAFARI, A. (2016). DETERMINATION OF ORGANIC P FRACTIONS IN A CALCAREOUS SOIL AS AFFECTED BY WHEAT CULTIVATION AND ORGANIC AMENDMENTS. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, 5(4), 79-95. https://www.sid.ir/en/journal/ViewPaper.aspx?id=509284



Vancouver: Copy

MOEINI M., HEJAZI MEHRIZI M., JAFARI A.. DETERMINATION OF ORGANIC P FRACTIONS IN A CALCAREOUS SOIL AS AFFECTED BY WHEAT CULTIVATION AND ORGANIC AMENDMENTS. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION. 2016 [cited 2021May14];5(4):79-95. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=509284



IEEE: Copy

MOEINI, M., HEJAZI MEHRIZI, M., JAFARI, A., 2016. DETERMINATION OF ORGANIC P FRACTIONS IN A CALCAREOUS SOIL AS AFFECTED BY WHEAT CULTIVATION AND ORGANIC AMENDMENTS. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, [online] 5(4), pp.79-95. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=509284.



 
 
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