Exchange and solution phase chemistry of acid, highly weathered soils. I. characteristics of soils and the effects of lime and gypsum amendments

Menzies N.W., Bell L.C. and Edwards D.G. (1994) Exchange and solution phase chemistry of acid, highly weathered soils. I. characteristics of soils and the effects of lime and gypsum amendments. Australian Journal of Soil Research, 32 2: 251-267. doi:10.1071/SR9940251


Author Menzies N.W.
Bell L.C.
Edwards D.G.
Title Exchange and solution phase chemistry of acid, highly weathered soils. I. characteristics of soils and the effects of lime and gypsum amendments
Journal name Australian Journal of Soil Research   Check publisher's open access policy
ISSN 0004-9573
Publication date 1994-01-01
Sub-type Article (original research)
DOI 10.1071/SR9940251
Volume 32
Issue 2
Start page 251
End page 267
Total pages 17
Language eng
Subject 2304 Environmental Chemistry
1111 Soil Science
Abstract Exchange and solution phase characteristics were evaluated on surface and subsoil horizons of 60 acid, highly weathered soils in the unamended state, and on 39 of the surface horizons following addition of CaCC>3 or CaS04.2H20. Soil solutions from unamended surface samples were dominated by Na (median concentration 0-65 mivi), while the other major cations were present at lower levels (median concentrations: Ca, 0-09; Mg, 0T4; K, 0-28 him). This pattern was more pronounced in the subsoil samples where the median concentrations of the nutrient cations were <0-05 mM, whereas the median concentration of Na was 0-28 mM. The cation exchange capacity of surface samples was dominated by Ca, Mg and Al, while A1 was the major exchangeable cation in the subsoil. Addition of CaS04.2H20 decreased soil solution pH and increased electrical conductivity and the concentration of Ca, Mg, Na, I< and Al in the soil solution. The soil solution pH change resulting from CaS04.2H20 addition could not be predicted on the basis of the characteristics of the soil in the unamended state.
Keyword Exchangeable cations
Soil solution
Soluble aluminium
Soluble basic cations
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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