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Ion Retention and Movement in Soils With Variable Charge Colloids
|Title:||Ion Retention and Movement in Soils With Variable Charge Colloids|
|Authors:||Syed-Fadzil, Syed-Farooq Bin|
|Abstract:||An experiment was designed to study distribution of ions in leachate, plant and soil as a function of phosphate and silicate application. Two soils containing variable charge colloids were used. Application of phosphorus and silicon reduced cation leaching. In one soil 50 percent of the calcium could not be accounted for in the leachate and plant or in N-NH4OAc extract. This calcium was "fixed" as specifically adsorbed ion on the colloid surface. Specifically adsorbed calcium resulted in a lowering of cation exchange capacity in one soil treated with 750 ppm phosphorus. A simple linear model for variable charge colloids was used to explain the experimental results.|
|Appears in Collections:||
M.S. - Agronomy and Soil Science|
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