Use of Diffusion to Determine Soil Cation-Exchange Capacity by Ammonium Saturation

2004 ◽  
Vol 35 (1-2) ◽  
pp. 51-67 ◽  
Author(s):  
R. L. Mulvaney ◽  
S. A. Yaremych ◽  
S. A. Khan ◽  
J. M. Swiader ◽  
B. P. Horgan
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Soil Cation Exchange Capacity

Modeling soil cation exchange capacity using soil parameters: Assessing the heuristic models

2017 ◽  
Vol 135 ◽  
pp. 242-251 ◽  
Author(s):  
Jalal Shiri ◽  
Ali Keshavarzi ◽  
Ozgur Kisi ◽  
Ursula Iturraran-Viveros ◽  
Ali Bagherzadeh ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Soil Parameters ◽  
Soil Cation Exchange Capacity

WHEAT YIELDS AND CHANGE IN CATIONS AFTER LEACHING SOIL WITH WATER CONTAINING INCREASING RATES OF POTASSIUM REFINERY DUST

1971 ◽  
Vol 51 (3) ◽  
pp. 405-410
Author(s):  
A. K. Ballantyne
Keyword(s):  
Adverse Effects ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Silt Loam ◽  
Exchangeable K ◽  
Silt Loam Soil ◽  
Exchangeable Ca ◽  
Loam Soil ◽  
Soil Cation Exchange Capacity

Leaching a silt loam soil (cation exchange capacity 23 meq/100 g) with water containing increasing rates of potassium dust (KCl) indicated that high levels adversely affected germination and yields of wheat as well as response to fertilizer. Germination was greatly reduced by the treatment with 22.4 metric tons per hectare and nearly eliminated by 44.8 tons. The 44.8-ton/ha treatment also greatly reduced the yield of grain, but straw weights were affected very little by increasing rates of potassium dust. Response to fertilizer was also reduced by 22.4 and 44.8 tons. The exchangeable Ca and Mg decreased and K increased as increasing amounts of K dust were leached through the soil. The 44.8-ton treatment decreased the exchangeable Ca from 56.0 to 24.9% and the Mg from 21.2 to 4.9%, and increased the K from 7.2 to 51.9%. It would appear that K salts can be added to the soil, without any adverse effects, until the exchangeable K is increased to about 30%. With the soil under study this took more than 11.2 tons per ha (5 short tons/acre). The application of dolomite ameliorated the effect of excess K.

scholarly journals Modeling soil cation exchange capacity in multiple countries

CATENA ◽  
2017 ◽  
Vol 158 ◽  
pp. 194-200 ◽  
Author(s):  
Yones Khaledian ◽  
Eric C. Brevik ◽  
Paulo Pereira ◽  
Artemi Cerdà ◽  
Mohammed A. Fattah ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Soil Cation Exchange Capacity

A note on resolving soil cation exchange capacity into ‘mineral’ and ‘organic’ fractions

1970 ◽  
Vol 75 (2) ◽  
pp. 365-367 ◽  
Author(s):  
T. M. Addiscott
Keyword(s):  
Hydrogen Peroxide ◽  
Organic Matter ◽  
Regression Analysis ◽  
Cation Exchange ◽  
Multiple Regression Analysis ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Before And After ◽  
Organic Fractions ◽  
Soil Cation Exchange Capacity

Two methods have been used previously to resolve the ‘mineral’ and ‘organic’ fractions of the cation exchange capacities of soils. Williams (1932) and Hallsworth & Wilkinson (1958) used multiple regression analysis to relate cation exchange capacity (CEC) in several soils to percentage organic matter (OM) and percentage clay, and thence to calculate the average values of the CECs of OM and clay. For individual soils, Davies & Davies (1965) and Clark & Nichol (1968) measured the CEC before and after oxidizing the OM with hydrogen peroxide.

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