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Estimation of phosphate adsorption by Acrisols of western Spain from electrical conductivity of potassium dihydrogen phosphate extracts of soil
Author(s) -
Serrano R. Espejo,
Arias J. Santano,
García E. Pardo,
Fernández P. González
Publication year - 2001
Publication title -
european journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 1351-0754
DOI - 10.1046/j.1365-2389.2001.00342.x
Subject(s) - phosphate , adsorption , potassium , sorption , conductivity , chemistry , salt (chemistry) , soil water , inorganic chemistry , electrical resistivity and conductivity , soil science , environmental chemistry , mineralogy , environmental science , organic chemistry , electrical engineering , engineering
Summary Estimation of the phosphate adsorption capacity in highly weathered acid soils is crucial for adopting appropriate phosphate fertilization practices. In this work, the salt sorption effect was used to develop a method for estimating phosphate adsorption capacity from the decrease in electrical conductivity of a potassium dihydrogen phosphate solution brought in contact with acidic soil samples from surface and subsurface horizons of Acrisols. The method is fast and simple and requires only the use of a conductimeter.