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DEFINING THE STATE OF REDUCTION OF A PADDY SOIL
Author(s) -
JEFFERY J.W.O.
Publication year - 1961
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1961.tb00907.x
Subject(s) - ferrous , oxidizing agent , ferric , reduction (mathematics) , soil water , environmental science , reducing agent , soil science , chemistry , mathematics , inorganic chemistry , geometry , organic chemistry
Summary The empirical terms ‘oxidizing conditions’, ‘healthy reducing conditions’, and ‘extreme reducing conditions’ as they are applied to paddy soils are discussed. The expression r Eh = E h + 0.180 pH is used to define these conditions more precisely, on the assumption that the presence of ferrous and ferric iron is necessary for healthy reducing conditions for rice. The concept may be useful in both well‐established and newly developing rice‐growing areas.