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The Characteristics, Classification and Genesis of Some Tropical Spodosols
Author(s) -
Tan K. H.,
Perkins H. F.,
McCreery R. A.
Publication year - 1970
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/sssaj1970.03615995003400050031x
Subject(s) - podzol , kaolinite , horizon , geology , allophane , geochemistry , organic matter , soil water , soil science , mineralogy , clay minerals , chemistry , mathematics , geometry , organic chemistry
Morphological, chemical, and mineralogical properties are presented for three tropical spodosols. Based on the occurrence in different climatic zones, the soils were distinguished as lowland podzols and mountain or highland podzols. The lowland podzol had a low organic matter content, a weakly developed Bh and a well developed argillic horizon below the spodic horizon. The name Humic Alfic Tropoferrod is proposed for this type of podzol. The A horizon contained predominantly amorphous clay, but the B horizon had appreciable amounts of kaolinite. Highland podzol I was high in organic matter, had a well developed Bh, but lacked an argillic horizon, and was classified as a Typic Tropohumod. Highland podzol II had similar properties, but was relatively young in degree of development and was classified as an Entic Tropohumod. The clay fraction of the humods was characterized by high amounts of amorphous clay, probably allophane. Kaolinite was not detected.