CHEMICAL AND MINERALOGICAL PROPERTIES OF ULTISOLS OF SASAMBA AREA, EAST KALIMANTAN

Simple item page
dc.contributoren-US
dc.creatorPrasetyo, B.H.; Center for Soil and Agroclimate Research and Development
dc.creatorSuharta, N.; Center for Soil and Agroclimate Research and Development
dc.creatorH., Subagyo; Center for Soil and Agroclimate Research and Development
dc.creatorHikmatullah, Hikmatullah; Center for Soil and Agroclimate Research and Development
dc.date2016-10-25
dc.date.accessioned2020-11-06T02:30:31Z
dc.date.available2020-11-06T02:30:31Z
dc.descriptionUltisols are a major group of marginal soils extensively found in the upland area of Indonesia. To better understand the potential of the Ultisols developed from claystone and sandstone in the Sasamba Integrated Economical Development Area in East Kalimantan, chemical and mineralogical characteristics of 27 Ultisols pedons consisting of 76 topsoil and 118 subsoil samples were investigated. Besides analysis and interpretation of data, relationships of several soil characteristics were constructed using simple regression. The results indicated that Ultisols showed acid to very acid reaction, had low content of organic matter and low base saturation. Soils generally exhibited net negative charge, and the point of zero charge was reached at pH 3.6. Both potential and available phosphates were low, and there was a trend that amorphous aluminum was responsible for phosphate fixation. The low content of exchangeable potassium in topsoil and subsoil indicated a positive correlation with potential potassium. Clay mineral was composed chiefly of kaolinite, with small amounts of illite, vermiculite, and quartz. The domination of kaolinite and low organic matter content causes the soils to have low cation exchange capacity. Soil management in this area should be focused on building up and maintaining soil fertility, and applying appropriate soil conservation techniques to minimize erosion. To obtain sustained productivity, various soil amendments including the use of farm and/or green manure, liming with agricultural lime, and application of rock phosphate and K fertilizers were highly recommended.en-US
dc.formatapplication/pdf
dc.identifierhttp://ejurnal.litbang.pertanian.go.id/index.php/ijas/article/view/1018
dc.identifier10.21082/ijas.v2n2.2001.p37-47
dc.identifier.urihttps://repository.pertanian.go.id/handle/123456789/10441
dc.languageeng
dc.publisherIndonesian Agency for Agricultural Research and Developmenten-US
dc.relationhttp://ejurnal.litbang.pertanian.go.id/index.php/ijas/article/view/1018/886
dc.sourceIndonesian Journal of Agricultural Science; Vol 2, No 2 (2001): October 2001; 37-47en-US
dc.source2354-8509
dc.source1411-982X
dc.subjectUltisols; chemical properties; clay; East Kalimantanen-US
dc.titleCHEMICAL AND MINERALOGICAL PROPERTIES OF ULTISOLS OF SASAMBA AREA, EAST KALIMANTANen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1018-3000-1-PB.pdf
Size:
576.97 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Indonesian Journal of Agricultural Science