Characteristics of Volcanic Ash Soils from Southern Part of Mt. Tangkuban Perahu, West Java

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dc.contributoren-US
dc.creatorYATNO, EDI
dc.creatorZAUYAH, S.
dc.date2012-12-18
dc.date.accessioned2018-06-04T06:35:10Z
dc.date.available2018-06-04T06:35:10Z
dc.date.issued2012-12-18
dc.descriptionThree soil pedons developed on young andesitic volcanic ash with high mineral deposit and high P retention, granular soil structure, high porosity, and low bulk density, were differentiated based on their morphological, physical, chemical and mineralogical characteristics. Pedons 1 and 3 are discontinue or bisequm pedons characterized by the presence of more contrast colour and new buried materials on layer 4, while pedon 2 isrelatively younger than pedons 1 and 3. Mineralogical composition of pedons 1 and 3 is very different compared with pedon 2. Pedons 1 and 3 have high total porosity resulting in easy to the soil leaching. Pedon 2 with higher bulk density tends to be more compact although its soil texture is light, indicating soil character of Andisols from this young volcanic material. High P retention and low base saturation may bring about high Pfertilizer need. Pedons 1 and 3 have lower feldspar content as K sources compared with pedon 2, while the content of opaque minerals is higher in pedons 1 and 3 indicating more developed pedons. The top layer of pedon 1 has lower opaque minerals but higher hornblende than pedon 3 due to different land use. The presence of alophane minerals in pedon 1 and 3 can be detected from the results of Selective Dissolution Analysis, but they do not detected on X-ray diffraction patterns. In pedon 2, however, alophane minerals show convex diffraction patterns. Based oncharacteristics of their soil physics, chemistry, and mineralogy, pedons 1 and 3 were classified as Thaptic Hapludands, and pedon 2 as Typic Melanudands. The increase of P availability on the three pedons can be done by P fertilization and liming to accelerate substitution of Al-P to Ca-P and increase of soil pH.en-US
dc.formatapplication/pdf
dc.identifierhttp://ejurnal.litbang.pertanian.go.id/index.php/jti/article/view/284
dc.identifier10.2017/jti.v0i23.284
dc.identifier.urihttps://repository.pertanian.go.id/handle/123456789/2401
dc.languageeng
dc.publisherBalai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanianen-US
dc.relationhttp://ejurnal.litbang.pertanian.go.id/index.php/jti/article/view/284/173
dc.source1410-7244
dc.sourceJurnal Tanah dan Iklim; No 23 (2005): Desember 2005en-US
dc.sourceJurnal Tanah dan Iklim (Indonesian Soil and Climate Journal); No 23 (2005): Desember 2005id-ID
dc.titleCharacteristics of Volcanic Ash Soils from Southern Part of Mt. Tangkuban Perahu, West Javaen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
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