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Water‐Stable Aggregation in Artificially Saline and Saline‐Alkali Soils
Author(s) -
Reid R. R.,
Leyendecker C. E.,
Hubbell D. S.
Publication year - 1950
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/sssaj1950.036159950014000c0036x
Subject(s) - soil conservation , library science , alkali soil , citation , agriculture , soil water , archaeology , geography , environmental science , computer science , soil science
IN FIELDS of Gila clay, it is a common observation that soil from saline-alkali spots is lacking in structure. Laboratory analysis of such soil confirms field observations by demonstrating a low content of water-stable aggregates and a high dispersion ratio. With respect to structure and aggregate content, soil from saline spots, on the other hand, differs little if at all from the normal soil. Hubbell and Chapman (2), working with normal Gila clay, showed that microorganisms must be present for the formation of water-stable aggregates; with the same soil, Hubbell and Gardner (3) observed a highly significant positive correlation between amount of aggregation and number of microphytes. The investigations reported here deal with effects on aggregation and microflora produced by additions of reagents to samples of normal Gila clay to simulate saline and saline-alkali soils.