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EDTA extractable phosphorus in soils as related to available and inorganic phosphorus forms

 

作者: K. L. Sahrawat,  

 

期刊: Communications in Soil Science and Plant Analysis  (Taylor Available online 1977)
卷期: Volume 8, issue 4  

页码: 281-287

 

ISSN:0010-3624

 

年代: 1977

 

DOI:10.1080/00103627709366721

 

出版商: Taylor & Francis Group

 

关键词: EDTA‐P;available P;inorganic P;ammonium molybdatestannous chloride;Alfisols;vertisols

 

数据来源: Taylor

 

摘要:

Twenty surface soil samples, representing two major soil orders alfisols and vertisols were extracted with 0.01N Na2EDTA solution (pH 4.8) at a soil/solution ratio of 1:25. Phosphorus in the extract was determined following ammonium molybdate‐stannous chloride colorimetric method. The EDTA extractable P showed significant positive correlations with extractable P according to the Olsen, Morgan, Bray 1 and 2 and also with inorganic phosphorus fractions associated with Al, Ca and Fe.

 

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