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Mechanism for Soil Potassium Release by Drying
Author(s) -
Scott A. D.,
Smith S. J.
Publication year - 1968
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/sssaj1968.03615995003200030049x
Subject(s) - biotite , mica , potassium silicate , potassium , silicate , soil water , geology , mineralogy , mechanism (biology) , geochemistry , chemistry , materials science , composite material , soil science , metallurgy , physics , organic chemistry , quartz , quantum mechanics
When large flakes of edge‐weathered biotite were air‐dried, some of the silicate layers were forced apart while others were brought closer together. Since the space between the separated layers developed into visible cracks that penetrated the inner mica core, the dry flakes provide visual evidence for a mechanism by which interlayer K can be released when soils are dried. The collapse of part of the lattice can give rise to a simultaneous occurrence of K fixation.