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Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment)
Published by Institut Pertanian Bogor
ISSN : 14107333     EISSN : 25492853     DOI : -
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Jurnal Ilmu Tanah dan Lingkungan merupakan media yang menyajikan artikel mengenai hasil penelitian dan telaah perkembangan mutakhir dalam bidang ilmu tanah, air, dan ilmu lingkungan sebagai bahan kajian utama.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Tanah
Articles 6 Documents
 1 
Search results for , issue "Vol 6 No 2 (2004): Jurnal Ilmu Tanah dan Lingkungan" : 6 Documents clear
PENENTUAN STATUS DAYA DUKUNG LAHAN DALAM PENYERAPAN TENAGA KERJA DI DAERAH PERTANIAN SAYURAN DENGAN SISTEM INFORMASI GEOGRAFIS, STUDI KASUS KECAMATAN SAMARANG, GARUT, JAWA BARAT Baba Barus
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 2 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (814.333 KB) | DOI: 10.29244/jitl.6.2.57-69

Abstract

An index for labor absorption capacity of an agricultural cropping system requires worker number from direct activities and non-direct activities in a field The number of workers from direct activities can be generated from landmanagement (ploughing, fertilization, weeding, etc), meanwhile, the number of workers from non-direct activities such as transportation of manure and product, has to include a distance effect. A distance of a farm from a collection point, where agricultural facilities distributed, contributes to the number of workers required for carrying such products or fertilizers.To calculate a distant effect to absorption capacity is hampered by difficulty in measuring of farm distance in a field,which implies it is rarely found such proper data in producing a labor absorption capacity. GIS as a spatial technology has the capability to produce such as distance effect. This research demonstrated the use of GIS in producing labor absorption capacity index and map of status labor absorption in Samarang sub-district, where several intensive agricultural activities such as paddy, vegetable and perfume grass crops were found The map could be used to understand indirectly the economic situation of the area. Keywords: Cropping system, distance, GIS, labor absorption capacity, Samarang sub-district
ISOLASI DAN UJI AKTIVITAS BAKTERI ASIDOFILIK PENGOKSIDASI BESI DAN SULFUR DAR! EKOSISTEM AIR HITAM DI KALIMANTAN TENGAH Nurseha Nurseha; Gunawan Djajakirana
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 2 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.159 KB) | DOI: 10.29244/jitl.6.2.51-56

Abstract

The acidophilic iron and sulfur-oxidizing bacteria were isolated from the black water ecosystem, an 'extreme' ecosystem affected indirectly or directly by peatland Isolation and selection were done on minimal media (liquid and solid). All selected strain of bacteria (BB 179, OM 349, AH 41, TB 23, TB 27, TP 3, NN 323, and SI 188) were identified as Thiobacillus ferrooxidans. Biooxidation and bio-leaching tests were accomplished using the isolated bacteria. The results showed the capability of the isolated bacteria to oxidize ferrous-salt and to leach the low qualities of sulfide ores. Keywords: Acidophilic, bioleaching, biooxidation, Thiobacillus ferrooxidans
NILAI MUATAN TITIK NOL (MTN) DAN HUBUNGANNYA DENGAN ERAPAN KALIUM PADA TANAH GAM BUT PANTAI JAMBI DAN KALIMANTAN TENGAH R. Purnamayani; Supiandi Sabiham; Sudarsono .; L. K. Darusman
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 2 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (408.319 KB) | DOI: 10.29244/jitl.6.2.75-82

Abstract

One of the important chemical aspects of peatland management which has not been paid attention to is Zero Point of Charge (ZPC). By determining soil ZPC value, the sorption and bounding of cations can be estimated in certain pH.value. Low of Potassium (K) is one of the other problems of peatland This nutrient is easily leaching from peat because of the weakness bounding. This research is aimed to determine ZPC value and maximum sorption of K of the coastal peats of Jambi and Central Kalimantan with decomposition degrees of sap ric, hemic, and fabric. The location of this research is in Soil Chemical and Fertility Laboratory, Department of Soil Science, Faculty of Agriculture IPB Bogor, from September 2000 - March 2001. Soil samples were taken from two areas, Lagan (Jambi) and Samuda (Central Kalimantan). The determinations of K maximum sorption was carried out on 4 pH level as treatments (0.25 point below and above pHZPC. 0.50 point above pHZPC and at pHZPC. It was concluded that ZPC value of coastal peats of Jambi with decomposition degrees of sapric was 5.01, decomposition degrees of hemic was 4.13, and decomposition degrees of fibric was 4.56, while coastal peats of Central Kalimantan with decomposition degrees of sapric was 4.25, decomposition degrees of hemic was 4.28, and decomposition degrees of fibric was 4.48. Jambi peat with sapric decomposition level has the lowest K maximum sorption at Zpc. In contrast, Central Kalimantan peat with sapric decomposition level has the highest K maximum sorption. Keywords: Peat, potassium, sorption, ZPC
Relationship Between Exchangeable Alumunium and Phosphorus Sorption Parameters of Indonesian Acid Soils Arief Hartono
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 2 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.541 KB) | DOI: 10.29244/jitl.6.2.70-74

Abstract

In acid soils, phosphorus (P) sorption is generally attributed to hydrous oxides of Fe and Aluminum (Al) particularly in tropical soils with low pH. However, reports concerning the role of exchangeable Al in P sorption mechanism are very little. Phosphorus (P) sorption isotherms were studied in fifteen acid upland soils containing different amounts of exchangeable Al. P sorption characteristics were satisfactorily described by the Langmuir equation. which was used to determine P sorption maxima and bonding energies, with r values ranging from 0.97 to 0.99. The soils varied widely in their capacities to sorb P. P sorption maxima ranged from 303 to 1,429 mg kg-1 (mean 627 mg kg-1) and bonding energies from 0.65 to 8.00 L mg-1 (mean 2.39 L mg-1). Exchangeable AI was found not correlated with P sorption maxima (r = -0.11) but significantly correlated with P bonding energies (r = 0.68**). This was clearly shown by clayey soils from Java and Sumatra but not in sandy soils from Kalimantan. The results suggested that in general, the reaction of exchangeable Al with P increased P bonding energy but exchangeable Al was not the main component in P sorption maximum. Keywords: Exchangeable Al, P bonding energy, P sorption maximum
HUBUNGAN KETERSEDIAAN AIR TANAH DAN SIFAT-SIFAT DASAR FISIKA TANAH Kukuh Murtilaksono; Enny Dwi Wahyuni
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 2 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (577.924 KB) | DOI: 10.29244/jitl.6.2.46-50

Abstract

This research was conducted to study the relationship between soil moisture content and soil physical characteristics that affected the moisture.The soil samples were collected from 22 scattered sites of West Java and Central Java. Analysis of soil physical properties (texture, bulk density, particle density, total porosity and soil moisture retention) and soil chemical property (organic matter) was conducted at the laboratory of the Department of Soil Sciences, Faculty of Agriculture, Bogor Agricultural University. Analysis of simple linear regression was applied to know the correlation between soil moisture content and other basic soil physical properties.Availability of soil moisture (pF 4.20 – pF 2.54) significantly correlated with organic matter, total porosity, and micropores. The higher organic matter content, as well as total porosity and micro, pores the higher available soil moisture. Soil moisture of field capacity significantly correlated with clay content, sand content, micro and macropores. The higher clay content and micropores the higher soil moisture of field capacity. In the contrary, the higher macropores and sand content the lower the field capacity. Soil moisture of the wilting point significantly correlated with clay content and macropores. The higher clay content the higher the wilting point, while the higher macro pores the lower soil moisture of wilting point. Keywords: Available soil water, field capacity, organic matter, soil pores, wilting point
PENGOLAHAN DSM DENGAN INTERFEROMETRI SAR (InSAR) ANTARIKSA UNTUK MEKANISME PEMBANGUNAN BERSIH (MPB) PROTOKOL KYOTO M. A. Raimadoya; B. H. Trisasongko; D. Shiddiq; D. R. Panuju; R. Maulida
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 2 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.997 KB) | DOI: 10.29244/jitl.6.2.39-45

Abstract

Capacity development in biomass monitoring is a key action in the implementation of the Clean Development Mechanism of the Kyoto Protocol in developing countries like Indonesia. The objection of this research is to explore the processing of spaceborne InSAR for the construction of the Digital Surface Model (DSM). The research successfully completed the process by using two InSAR pairs: ERS-1 & ERS-2 tandem pass (completed) and ENVISAT repeat pass (coherence only). DSM product, after field validation, will be applied for SAR calibration in relation to biomass and carbon stock estimation. Keywords: CDM, DSM, Kyoto Protocol, spaceborne InSAR

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