The determination of replacement hydrogen in manganese dioxide-free Hawaiian pineapple soils
1931
Dean, L.A. | Magistad, O.C.
Acetate-leaching solutions having different cations mill give different values for replaceable hydrogen. When an acetate solution is leached through a soil until the maximum amount of hydrogen has been replaced which the solution is capable of removing, and the acetate washed out, the pH of the residual soil is greater than that of the original leaching solution. Calcium is the logical cation to use in the replacement of hydrogen during the process of determining replaceable hydrogen. Leaching is more efficient than shaking in the replacing of hydrogen by calcium from a calcium acetate solution. The quantity of hydrogen replaced from a soil by calcium from a calcium acetate solution is a function of the volume of solution used and the rate of leaching. A proposed method for determining replaceable hydrogen in manganese dioxide free soils is given.
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