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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