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The Effect of Alternate Drying and Wetting on the Base‐Exchange Complex with Special Reference to the Behavior of the K‐Ion
Author(s) -
Joffe J. S.,
Kolodny L.
Publication year - 1939
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1939.036159950003000c0022x
Subject(s) - chemist , chemistry , computer science , library science , psychology , organic chemistry
In an attempt to elucidate the mechanism of K fixation in soils, prompted by the differential behavior of the K ion in the zonal soils, a series of investigations have been conducted (5,6). In discussing the fixation of K in relation to the phosphate compounds of Fe, Al, Ca, and Mg it was pointed out (6, p. 239-240) "that the phosphate ion is not the only causative agent of potassium fixation.... We have found that montmorillonite and like materials are capable of fixing large quantities of K even though the P content of these materials is very low." Continuing the studies on the fixation of K (in non-exchangeable form) Kolodny (8) reported that the phenomenon of K fixation in bentonite is accompanied by a decrease in exchange capacity which is equivalent to the K fixed. This equivalence was also noted and reported by Truog and Jones (14) who worked with bentonite and soils. In both cases (14) the K fixed was equivalent to the decrease in exchange capacity.