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NATA SUHARTA
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Characteristics of Spodosols, Limitation and Usage Potential NATA SUHARTA; EDI YATNO
Jurnal Sumberdaya Lahan Vol 3, No 1 (2009)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v3n1.2009.%p

Abstract

Spodosols characterized by the presence of spodic and albic horizons, are problem soils due to low productivity, coarse texture and low nutrient status. This soil was generally covered by alang-alang or shrub and bush. The soils were generally distributed in cold climate or wet tropical areas with high rainfall. The objectives of this paper were to discuss the characteristics ofSpodosols in Kalimantan and Sumatra and the possibility of their utilization. In Indonesia, this soil is found in Kalimantan, Sulawesi, Sumatra, and Papua Islands. Parent materials of the soils were originated from quartz sand, sediment or acid sedimentary rocks (quartz sandstone) with low nutrients status. Physiographically, the soils were distributed in alluvial plain, colluvial, sand beach, sand dune, tectonic plain and sandstone plateau on elevation of 5 to >1,500 m asl, with flat to nearly undulating relieves. The soil physical properties were characterized by coarse texture and the presence of root limiting layer such as fragipan, duripan, or placic horizon (organo-metal complex) with various depth. The soil chemical properties were characterized by acid soil reaction, very low exchangeable bases, P and K nutrient, and mineral reserve. Cation exchange capacity of the soils depends on their soil organic matter content. Based on the soil characteristics, most Spodosols were not suitable for agricultural land development. Therefore the Spodosols usages should be directed not only for production increases but also for environmental healthiness and soilcare. The Spodosols land that have been opened needs to be optimally used in order to increase soil quality through appropriate soil and plant management. The new land cleared for agriculture and production forest needs carefully actions with localizing the Spodosols distribution in order to maintain the natural vegetations as conservation forest or recreation areas.
Characteristics of Spodosols, Limitation and Usage Potential NATA SUHARTA; EDI YATNO
Jurnal Sumberdaya Lahan Vol 3, No 1 (2009)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v3n1.2009.%p

Abstract

Spodosols characterized by the presence of spodic and albic horizons, are problem soils due to low productivity, coarse texture and low nutrient status. This soil was generally covered by alang-alang or shrub and bush. The soils were generally distributed in cold climate or wet tropical areas with high rainfall. The objectives of this paper were to discuss the characteristics ofSpodosols in Kalimantan and Sumatra and the possibility of their utilization. In Indonesia, this soil is found in Kalimantan, Sulawesi, Sumatra, and Papua Islands. Parent materials of the soils were originated from quartz sand, sediment or acid sedimentary rocks (quartz sandstone) with low nutrients status. Physiographically, the soils were distributed in alluvial plain, colluvial, sand beach, sand dune, tectonic plain and sandstone plateau on elevation of 5 to >1,500 m asl, with flat to nearly undulating relieves. The soil physical properties were characterized by coarse texture and the presence of root limiting layer such as fragipan, duripan, or placic horizon (organo-metal complex) with various depth. The soil chemical properties were characterized by acid soil reaction, very low exchangeable bases, P and K nutrient, and mineral reserve. Cation exchange capacity of the soils depends on their soil organic matter content. Based on the soil characteristics, most Spodosols were not suitable for agricultural land development. Therefore the Spodosols usages should be directed not only for production increases but also for environmental healthiness and soilcare. The Spodosols land that have been opened needs to be optimally used in order to increase soil quality through appropriate soil and plant management. The new land cleared for agriculture and production forest needs carefully actions with localizing the Spodosols distribution in order to maintain the natural vegetations as conservation forest or recreation areas.
The Characteristic of Soil Developed from Felsic Sediments in West Kalimantan Province and Its Implication to Land Manageme NATA SUHARTA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 25 (2007): Juli 2007
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n25.2007.%p

Abstract

Reconnaisance soil survey at 1:250.000 scale in West Kalimantan Province has been done covering 5.5 billion hectare. Result show that parent material governs formed soil properties. This research aimed to discuss soil properties developed from felsic sediment parent material in West Kalimantan Province and its implication to land management. As much as 100 pedons from felsic sediment parent material has been investigate in the field and in the laboratory for particle size distribution and chemical properties. Results show that particle size distribution or soil texture depend on parent material (sandstone, siltstone or claystone). Developed soil show acid soil reaction, ion organic material, ion P and K, ion exchangeable bases, ion base saturation, variable cation exchange capacity. Meanwhile, Al saturation is high and correlate positively with clay content. Soil properties that influence land management are particle size distribution and chemical properties. Land management showed be directed to increase soil pH, to decrease Al reactivity, to increase soil P and K, organic matter and exchangeable bases.
Properties of Low Activity Clay Soils from South Kalimantan BAMBANG HENDRO PRASETYO; NATA SUHARTA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 22 (2004): Desember 2004
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n22.2004.%p

Abstract

Soils with low activity clay is one of the problem soils in Indonesia. These soils consisted of Ultisols, Oxisols, Alfisols, and some Inceptisols, occupied about 34.5% of total Indonesian land, distributed in almost all Indonesian islands, and derived from various parent materials. To evaluate the properties of low activity clay soils, 6 pedons of Oxisols and Inceptisols, derived from clay stone, andesitic rock, ultra mafic rock and lime stone,from South Kalimantan were studied both in the field and in the laboratory. The analyses consisted of texture, organic carbon content, pH (H2O and KCl), potential P and K, available P, P retention, exchangeable bases and acidity, cation exchange capacity and mineralogical composition. The results showed that low activity clay dominated by opaque and quartz as primarilyresistant mineral. Clay fraction was dominated by kaolinite, and to a lesser extent goethite, hematite, and gibbsite were also present. The mineralogical composition of the low activity soils indicated a low natural potential nutrient reserve and an advanced stage of soil weathering. Chemically, the low activity clay soils were acid, low content of bases, low cation exchange capacity, high P retention, and some of them show a high aluminum saturation. A complete fertilizer application is necessary for a sustainable use. Although soil fertility constraints on the low activity clay soils can be corrected by liming and appropriate fertilization, socioeconomic condition of the local farmer is another constraint.
Development of Soils Derived from Weathered Sedimentary, Granitic and Ultrabasic Rocks in South Kalimantan Province: I. Mineralogical Composition and Chemical Properties MARKUS ANDA; NATA SUHARTA; SOFYAN RINTUNG
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 18 (2000): Desember 2000
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n18.2000.%p

Abstract

Limited information is available on chemical propertiesand mineralogical composition of soils in South Kalimantan Province. The objective of this study is to assess the develop derived from weathered sedimentary, granitic and ultrabasic rocks with respect to soil management. Field investigations and laboratory analyses were performed to compare morphological properties, particle sizes, mineralogical compositions of sand and clay fractions, organic C, N, pH, extractable acidity, P retention, exchangeable cations, cation exchange capacity, and oxides of iron and aluminium. The results. show the AY-14 pedon has a higher degree of development followed by MA-86 and SW-89, respectively as indicated by mineralogical composition and chemical properties. Although the three pedons are dominated by kaolinite, the AY- 14 pedon (developed from an ultrabasic rock) has no weatherable minerals and vermiculite but has high opaques, low quartz and colloid surfaces bearing positive charge. On the other hand, weatherable minerals are only found in SW-89. The MA-86 and SW-89 (developed from granitic and sedimentary rocks, respectively) have low opaques, high quartz, a minor proportion of vermiculite, and colloid surfaces bearing negative charges. These findings suggest that the AY-14 has a higher degree of development than MA-86 and SW-89. Comparison between MA-86 and SW-89 indicated that the former has lower clay cation exchange capacity (CEC) and contains no weatherable minerals indicating that the MA-86 has a higher degree of development than the SW-89. The values of exchangeable cations, CEC of soil and clay, and ECEC were low in all three pedons. The magnitude of each value was lower in the AY-14 followed by MA-86 and SW-89, respectively. In contrast, P retention and iron oxides were the highest in the AY- 14 pedon followed by MA-86 and SW-89, respectively. The three pedons have very acid to acid pH, and low C and N contents. Based on chemical properties and mineralogical composition, the three pedons need different management practices. The soil derived from ultrabasic rock (AY-14) needs higher phosphate fertilizer due to its high P retention, higher organic matter and lime than soils derived from granitic rock (MA-86) and sedimentary rock (SW-89) in order to increase CEC, nutrient availability and soil pH.
Co-Authors BAMBANG HENDRO PRASETYO EDI YATNO MARKUS ANDA SOFYAN RINTUNG