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INDONESIA
Jurnal Sumberdaya Lahan
Published by Kementerian Pertanian
ISSN : 19070799     EISSN : 27227731     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
diterbitkan oleh Balai Besar Litbang Sumberdaya Lahan Pertanian, Jurnal Sumberdaya lahan terbit 2 kali setahun memuat suatu tinjauan terhadap hasil-hasil penelitian atau terhadap suatu topik yang berkaitan dengan aspek tanah, air, iklim, dan lingkungan pertanian
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 2, No 1 (2008)" : 5 Documents clear
Utilization and Development Strategy of PLG Peat Land in Central Kalimantan DIDI ARDI SURIADIKARTA
Jurnal Sumberdaya Lahan Vol 2, No 1 (2008)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v2n1.2008.%p

Abstract

Swampy lands in Indonesia are covering a very large area which are distributed in three main islands i.e. Sumatra, Kalimantan, and Papua. The total areas of swampy lands are 33.4 millions ha, that consist of tidal land areas covering 20 millions ha more or less, and about 13.4 millions ha of non tidal lands. To develop swampy land area need good planning with proper technological application, especially in soil and water management. The objective of opening swampy land areas is to overcome the decreasing of rice productivity of rice field in Java. This is due to landuse conversion to another function, such as office building, highway, roads, and manufactures. PLG areas consist of four blocks, namely Block A, B, C, and D which covers 268,000 ha, 156,000 ha, 570,000 ha, and 138,000 ha, respectivelly. The strategy for developing these areas are: 1) To make master plan of PLG areas, 2) The peat land that has a thickness more than 3 meters utilized for conservation areas, 3) The peat land with less than 3meters thickness will be utilized for developing agriculture, fishery and forestry, 4) Protection areas for developing biodivercity. If those strategies are being conducted, thus the rehabilitation and revitalization of this area will be easily executed. According to the research result conducted by Agency of Agricultural Research and Development during the period of 1997-2000 in these areas, it is indicated that the soils are very potential for food crops, horticultures, and fruits. The limiting factors of these areas are pest, diseases, and flooding at the peak of rainy season. These areas are very potential for agribusiness such as food crops, vegetable crops, fruits, and estate crops, if macro water management network can be functioned normally and limiting factors can be controlled.
Agricultural Environmental Management Strategy UNDANG KURNIA; NONO SUTRISNO
Jurnal Sumberdaya Lahan Vol 2, No 1 (2008)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v2n1.2008.%p

Abstract

Developments in Indonesia has raised several positif impact for most people due to gaining the new opportunity jobs. However, these positive opportunity often raised negative impact, especially on land resources and the environment, and people surrounding. Development industries on productive agriculture land have decreased agricultural areas, pollution of soil, water bodies/rivers, and cheerfulness and health of people and other humanlife. Mine activities also caused negative impact such asdegradation of land resources and environment, and pollution due to the application of chemical matterial on sevaration of mine products. Land clearing for infrastructures construction (roads, buildings, bridges), and agricultural practices had caused land degradation and the environment, and pollution as well. The disturbance of natural resources and environmental imbalance caused the deterioration of soil productivity, and the quality of agricultural yield due to chemical contamination on soil, rivers/water bodies, and crops. These condition has to consider necessary effort on the agricultural and environmental management more precised,directed, and accurated. Therefore, identification and characterization of sources of degradation and pollution, and analyses on issues raised in the field to form strategic effort on agricultural environmental management. The deterioration of soil productivity could be managed by applying soil conservation and land rehabilitation techniques through integrated management of related governments, institutions, and farmers/people. The pollution on soil and plant need quality standard criterium for heavy metals, and the values could be determined and difined for Indonesia condition. Critical levels of heavy metals in the soil could be used as a guide for implementation of law imporcement. Industrial waste which is polluted rivers and water bodies could be easly predicted, due tospesific industry resulted chemical contents of liquid waste similar with content of raw materials. Inappropiate land management could accelerate increasing green house gases in the atmosphere, and would be caused global warming as well. Excessive carbondioxide emission could be controlled by sequistrated CO2 through revegetation and rehabilitation of degraded land. Methane (CH4) and nitrousoxide (N2O) emission from lowland rice could be controlled by reduction its planting areas and substitute by non rice commodites, appropiate and better water management, and slow release nitrogen fertilizer application.
Association of Soil Minerals and Organic Matter and Their Impact on pH Value MARKUS ANDA
Jurnal Sumberdaya Lahan Vol 2, No 1 (2008)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v2n1.2008.%p

Abstract

Clay and organic colloids are two factors that control major, if not all, chemical, physical and biological processes and soil properties but maintaining soil organic matter content under tropical conditions is difficult. The objectives of this review are to explore association between minerals and organic substances, mechanisms underlying the stabilization of soil organic matter, and their implication on pH0 of soil variable charge component. The modes of interaction in clay-humus complexes may occur through anion and ligand exchange to the crystal edges, cation or water bridge to basal surfaces, H-bonding to the siloxane or gibbsite sheetby van der Waals forces attraction (physical bonds), entrapment in crystal pores and intradomain regions, and adsorption in interlayer spaces. Organic matter preservation was related to amount of clay fraction, type of clay mineral present and aggregate formation. High preservation occurs in soils having high clay content, the presence of 2:1 minerals and amorphous minerals (allophane and imogolite), and a larger aggregate size. Current knowledge indicates that the mechanisms of soil organic matterstabilization are: (i) chemical recalcitrance involves elemental composition, the presence of functional groups, and molecular conformation of organic substances against decomposition by microbes and enzymes; (ii) chemical stabilization occurs through adsorption of functional groups to clay mineral surfaces and amorphous sesquioxides; (iii) physical protection involves organic substances being protected by clay fractions in soil pores, especially mesopres (2-50 nm) that limits the accessibility of microbes andenzymes. Soil organic matter is powerful in masking reactive mineral surfaces and generating soil negative charge, which is revealedby the low value of pH.
The Characteristics of Rice Soils Derived from Alluvial Deposite and their Management BAMBANG HENDRO PRASETYO; DIAH SETYORINI
Jurnal Sumberdaya Lahan Vol 2, No 1 (2008)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v2n1.2008.%p

Abstract

Rice soils derived from alluvial deposite were spread almost in all Indonesian archipelago, due to the fact that the parent materials were resulted from sedimentation processes after erosion or weathering either in the upper course of river or the higher place, from the far or short distance. Generally the more distance of sediment material from the source of erosion or weathering, the more variation in the properties, and the closer of sediment material from the source of erosion or weathering, the more homogeny of the sediment material properties. The content and kind of weatherable mineral which were act as important source of nutrient inthe rice soils were influenced by parent materials. Among the parent materials, the sediment from intermediate to basic volcanic materials was the best supplier of nutrients. The most constrain in the alluvial rice soils are acidity and the nutrient content or source of nutrients. A balanced fertilizing based on soil testing is the best way to manage alluvial rice soils. For the area which is already had P and K nutrient status map at 1:50,000 scale, the fertilizing recommendation of primer macro nutrients could be refered to the map, while for the area that do not has a P and K nutrient status, the soil testing analyses should be done. Return straw to the ricefield is strongly recommended, because returned straw could be thrifty application of fertilizer, especially kalium (K).
Land Resource Potential for Agricultural Commodity Development in West Kalimantan Province . HIKMATULLAH; NONO SUTRISNO; ACHMAD HIDAYAT
Jurnal Sumberdaya Lahan Vol 2, No 1 (2008)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v2n1.2008.%p

Abstract

West Kalimantan province with total areas of 14.64 million ha has already had spatial database of land resources at scale of 1:250,000 resulted from reconnaissance soil mapping (2004-2007). This database can be used for composing agricultural planing at province level. The area is composed of wetland ecosystem which covers 3,659,736 ha (24.99%), drylands with <15% slopes covers 4,356,790 (29.74%) and >15% slopes covers 6,441,956 ha (44.0%). The coverage of existing landuse for agriculture is only about 13.85% of the total area. In general, the area belongs to wet climate with average annual rainfall varies from 2,663 to 4,191 mm, and belongs to A, B1, and C agroclimatic zones. The area has various kinds of parent materials consisting of alluvium, organic matter deposit, old volcanic rocks, intrusive rocks, sedimentary rocks and metamorphic rocks that formed soil orders of Histosols, Entisols, Inceptisols, Spodosols, Ultisols, and Oxisols, which give variation in their properties. The result of the land resource potential analysis for agricultural commodity development is directed to: (a) land intensification for rice fields covers about 221,381ha, upland food crops (maize, upland rice, legumes, tuber crops) covers 173,581 ha, annual or estate crops (rubber, oil palms, coconut, pepper, and coffea) including fruit crops covers 570,266 ha, and for brackish fishpond covers 7,394 ha, and (b) land extensification for rice fields covers 869,133 ha, upland food crops 1,316,058 ha, estate crops (oil palm, rubber, coconut, pepper, coffea) covers 3,098,269 ha (as first priority at 15-25% slopes) and 1,300,374 ha (as second priority at 25-40% slopes), and for brackish fishponds covers 25,437 ha. The availability of spatial land resource information to develop high economic value of agricultural commodities, especially estate crops, would support establishing growth centre of agribusiness and agroindustry in the area.

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