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All Journal Jurnal Penelitian Saintek Agrikultura IJOG : Indonesian Journal on Geoscience Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Soil REns Jurnal Agro Wiralodra Jurnal Tanah dan Iklim Indonesian Journal on Geoscience Indonesian Journal on Geoscience Jurnal Pertanian Agros
Rina Devnita
Departemen Ilmu Tanah Dan Sumber Daya Lahan, Fakultas Pertanian, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Languange, Linguistic, Communication & Media Public Health

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Journal : Indonesian Journal on Geoscience

 1 
Micromorphological Characterization of Some Volcanic Soil In West Java Arifin, Mahfud; Devnita, Rina
Indonesian Journal on Geoscience Vol 3, No 4 (2008)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.3.4.195-203

Abstract

http://dx.doi.org/10.17014/ijog.vol3no4.20082Micromorphological characterization has been studied on six pedons of soils developing in volcanic materials in West Java. The pedons represent deposits of different volcanoes (Mount Tangkuban Perahu, Mount Patuha and Mount Papandayan) with different ages (Pleistocene, Holocene) within two types of volcanisms (andesitic, basaltic), and three agroclimatic zones (A, B1, B2). Undisturbed soil samples were taken from each identifiable horizon for thin section preparations. Observations were carried out by means of a magnifying lens, binocular stereomicroscope, polarization microscope, and scanning electron microscope (SEM). The result demonstrates that micromorphological characteristics of volcanic soils developing from different ages, types of parent material, and climate were different through their c/f related distribution 2µ patterns, c/f ratios, sorting, infillings and coatings of voids, and microstructure.  
Mineralogical Characteristics and The Pedogenetic Processes of Soils on Coral Reefs in Ambon Devnita, Rina
Indonesian Journal on Geoscience Vol 4, No 1 (2009)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.4.1.19-29

Abstract

http://dx.doi.org/10.17014/ijog.vol4no1.20093The mineralogical characteristics of soils developed on coral reef parent materials in Hitu and Wailiha, Ambon, were investigated regarding to the relationship to pedogenesis. The analyses concerned with the characteristics of soil chemical, physical, and mineralogy of the rock fragment and sand, silt and clay fractions are to investigate the pedogenesis processes. Both soil profiles indicate the clayey texture, slightly neutral reaction, high cation exchange capacity, base saturation, and iron oxide. The mineralogical analyses of rock fragments and sand fractions indicate that besides carbonate minerals, silicate minerals were also found. The clay mineralogy showing the domination of kaolinite, gibbsite, and goethite, reflects that the soil is intensely weathered. Pedogenesis process showing the clay translocation, indicates that the weathering process has been occuring under the tropical influence.    
Melanic and Fulvic Andisols in Volcanic Soils derived from some Volcanoes in West Java Devnita, Rina
Indonesian Journal on Geoscience Vol 7, No 4 (2012)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.7.4.227-240

Abstract

DOI: 10.17014/ijog.v7i4.149Melanic and fulvic Andisols are the great groups in the classification of volcanic soils Andisols, which describe the soils with high organic carbon content in the epipedon. The organic C must be more than 6% in the upper 30 cm with the value and chroma are 2 or less for melanic and more than 2 for fulvic. Melanic epipedon also has to have the melanic index that is 1.70 or less. The objective of this study is to investigate the melanic and fulvic Andisols in volcanic soils that developed under pine forest vegetation (Pinus merkusii) from different parent materials and ages of Mount Tangkuban Parahu (andesitic, Holocene) and Mount Tilu (basaltic, Pleistocene). The method used was a descriptive comparative survey of three profiles in Mount Tangkuban Parahu and three profiles in Mount Tilu. Analyses were done for each horizon in the profiles comprising the investigation of andic soil properties through the analyses of organic C, bulk density, Al + ½ Fe (ammonium oxalate), and P-retention. The investigations were continued by further calculation of organic C content and by investigation of soil colour with Munsell Soil Colour Chart. The results showed that the two profiles in Mount Tangkuban Parahu and two profiles in Mount Tilu are fulvic Andisol. No melanic Andisols were found in both locations. Pine forest vegetation encourages the formation of fulvic Andisols were derived from andesitic-Holocene parent materials or basaltic-Pleistocene parent materials.
Co-Authors Ade Setiawan Ai Ening Rostini Anindita, Sastrika Anni Yuniarti Apong Sandrawati Benny Joy Cucu Suherman Endah Nurlaela Fajri Syahid Nurhakim Ganjar Herdiansyah Henly Yulina Henly Yulina Henly Yulina Henly Yulina Henly Yulina, Henly Mahfud Arifin Marenda Ishak Sonjaya Sule Muhammad Amir Solihin Oviyanti Mulyani Pujawati Suryatmana Putri, Noviani Rachmat Harryanto Rachmat Heryanto Ramadhan, Ilmi Ridha Hudaya Rija Sudirja Sandrawati, Apong Santi Rosniawaty Sitorus, Hasnan Pratama Solihin, Muhammad Amir Teddy Marpaung Widara Almaghfirah Ismail Yanuar Euro Andrian Yuliati Machfud