Some Chemical, Physical and Mineralogical Properties of Acid Sulfate Soils from the Mekong Delta in Vietnam - Collections

＜departmental bulletin paper＞
Some Chemical, Physical and Mineralogical Properties of Acid Sulfate Soils from the Mekong Delta in Vietnam

Creator	Creator Name Tho, Huynh-tong Affiliation Affiliation Name Laboratory of Soil Science, Faculty of Agriculture, Kyushu University
Creator	Author PID K001541 Creator Name Egashira, Kazuhiko 江頭, 和彦 Affiliation Affiliation Name Laboratory of Soil Science, Faculty of Agriculture, Kyushu University 九州大学農学部農芸化学科土壌学講座
Language	English
Publisher	Kyushu University
Publisher	九州大学農学部
Date	1976-10
Source Title	Journal of the Faculty of Agriculture, Kyushu University
Vol	20
Issue	3/4
First Page	151
Last Page	164
Publication Type	Version of Record
Access Rights	open access
Crossref DOI	https://doi.org/10.5109/22897
Related DOI	九州大学農学部紀要 \|\| 20(3/4) \|\| p151-164
	Journal of the Faculty of Agriculture, Kyushu University \|\| 20(3/4) \|\| p151-164
	http://www.agr.kyushu-u.ac.jp/
Related URI	九州大学農学部紀要 \|\| 20(3/4) \|\| p151-164
	Journal of the Faculty of Agriculture, Kyushu University \|\| 20(3/4) \|\| p151-164
	http://www.agr.kyushu-u.ac.jp/
Relation	九州大学農学部紀要 \|\| 20(3/4) \|\| p151-164
	Journal of the Faculty of Agriculture, Kyushu University \|\| 20(3/4) \|\| p151-164
	http://www.agr.kyushu-u.ac.jp/

File	FileType	Size	Views	Description
p151	pdf	213 KB	769

PISSN	0023-6152
NCID	AA00697606
Record ID	22897
Peer-Reviewed	Unrefereed
Subject Terms	Mekong delta
	Acid sulfate soil
	Physico-chemical property
	Mineralogical property
ISSN	0023-6152
NCID	AA00697606
Notes	Vietnam acid sulfate soils were analysed on their physico-chemical and mineralogical properties. Effects of submerging on their electrochemical and chemical changes were also investigated. These acid sulfate soils were characterized by heavy texture, with clay and silt contents of more than 90%. These soils had rather high organic matter and CEC levels but were deficient in exchangeable K and available P. They were also characterized by strong acidity (pH<3.7). Their strong acidity was ascribed to the presence of aluminum and ferric sulfate. The clay fraction (<2μm) of these soils consisted mainly of illite and kaolinite with lesser amounts of montmorillonite, vermiculite and chlorite. The Vietnam acid sulfate soil sample showed a retarded development of soil reduction, namely, gradual decrease in Eh and gradual increase in Fe^2+, during submergence. Its acidity did not change. Addition of starch caused a considerable increase in Fe^2+, whereas addition of CaCO3 caused the precipitation of Fe^＊+ and Al3+.
Created Date	2012.07.20
Modified Date	2022.11.11