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INDONESIA
Jurnal Tanah dan Iklim
Published by Balai Besar Penelitian dan Pengembangan Sumberdaya lahan Pertanian
ISSN : 14107244     EISSN : 27227723     DOI : http://dx.doi.org/10.21082/jti.v44n1.2020.19-29
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal TANAH dan IKLIM memuat hasil-hasil penelitian bidang tanah dan iklim dari para peneliti baik dari dalam maupun dari luar Balai Besar Litbang Sumberdaya Lahan Pertanian. Jurnal ini juga dapat memuat informasi singkat yang berisi tulisan mengenai teknik dan peralatan baru ataupun hasil sementara penelitian tanah dan iklim.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 7 Documents
 1 
Search results for , issue "No 33 (2011): Juli 2011" : 7 Documents clear
THE APPLICATION OF LANDSAT TM DATA AND SRTM DATA FOR DETECTION VULNERABILITY ASSESSMENT OF FLOOD IN BENGAWAN SOLO WATERSHED RAHARJO, P.D.; LAROSA, T.F.
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

Bengawan Solo watershed is one of watershed that has frequent floods. Due to high rainfall in the rainy season, the river can?t accommodate the surface runoff and resulted flooding around the area. The high rainfall is not only causing flood in some areas upstream watershed, but also threaten the downstream areas in East Java province, especially Bojonegoro, Lamongan, Tuban and Gresik. Data of remote sensing and Geographic Information System (GIS) could detect assessment vulnerability of flooding. The research objective is to study flood vulnerability assessment in Bengawan Solo watershed using remote sensing data. The method is the combination of information from remote sensing data, i.e.. (1) to combine band 4 with band 7 Landsat TM in which the flood pixel value is ? 78; (2) to detect flow accumulation using SRTM data; and (3) to detect flooding areas at the altitude of 0-50 m. The result obtained from the study is the flood vulnerability in Bengawan Solo watershed including Sragen District (Masaran, Plupuh, Gesi, Sidoharjo Sub District); Ngawi (Widodaren, Kedungalar, Pitu SubDistrict); Tuban District (Rengel, Plumpang, Widang Sub District); Bojonegoro (Padangan, Malo, Kalitidu, Trucuk, Bojonegoro,Dander, Kanor, Baureno, Sumberejo Sub District); Lamongan (Laren, Solokuro, Karanggeneng, Kalitengah Sub District); Gresik Regency (Hamlet and Bungah Sub District).
CHARACTERISTIC AND RUBBER PLANT REVEGETATION AT THE POST COAL MINING LAND KUTAI KARTANEGARA REGENCY ., SUJIMAN; SITORUS, SANTUN R.P.; OKTAVIANI, R.; ., MACHFUD
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

The research objective was to analyse the characteristic of post coal mining land in Kutai Kartanegara Regency and to find out what commodities that suitable for vegetation of this land. The methode of research was using primary data including soil sampling taken with purposive sampling and composite methode. Rubber planting experiment was also carried out at two different soil conditions, that was land with original soil and land withtailing soil (overburden of coal mining). Both soil conditions were employed experimental using randomized completely block design with four treatments, i.e. : (1) without fertilizer, (2) liming, (3) manure fertilizer, and (4) manure fertilizer + liming. Secondary data for commodity research was taken from bureau of statistic centre, labour service, and mining service of Kutai Kartanegara Regency.The result showed that reclaimed land (5-20 years) was classified as S2 class of land suitability for rubber. The competitive commodities of Kutai Kartanegara Regency were rubber, coffea, and coconut, meanwhile strategic commodities were oil palm, pepper, and cocoa. The result of rubber experiment showed that post coal mining land with original soil significantly affective to leaf amount, height, and stem diameter of rubber.
ANDISOLS DERIVED FROM ACID PYROCLASTIC LIPARITE TUFF : THEIR PROPERTIES AND THEIR MANAGEMENT STRATEGY FOR AGRICULTURAL DEVELOPMENT YATNO, EDI; SUHARTA, NATA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

The characterizations of Andisols from acid pyroclastic liparite tuff have been studied. Six soil profiles were made in the field, and 29 soil samples were taken for chemical, mineralogical and physical analyses in laboratory. Results indicate that sand mineral composition of Andisols was dominated by biotite, quartz, and sanidine, while the clay mineral was dominated by allophane. Soil bulk density is low (0.47-1.00 g cm-3), while total porosity is high (53-80%). Soil reaction is slightly acid (pH 5.5-6.0) to very acid (pH< 4.5), poor of nutrients, have a high to very high of P retention (>80%), high (>3%) to very high organic carbon (>5%) and high potential K (>41 mg 100g-1). The high value of organic carbon positively has relationship with N and soil cation exchange capacity, while the P retentionpositively has relationship with amorphous material in the form of Alo+0.5 Feo. Andisols investigated were classified as Medial, amorphic, isothermic, Acrudoxic Hapludands (UG 444 and MD 121 ), Medial, amorphic, shallow, isothermic, Duric Hapludands (KR 227), and Medial, amorphic, shallow, isothermic, Acrudoxic Hapludands (KR 190, AI 1045 and KR 1188). The characterization of Andisols is very useful in the soil management planning on Andisols land. Planting some vegetation that tolerant with soil acidity and soil conservation to protect organic matter from erosion hazard should be become priority. Maintain land cover of Andisols is a good way to protect Andisols from erosion process.
Soil Conditioner Formula Enriched by Humic Substance to Enhance Productivity of Ultisols Taman Bogo, Lampung AI DARIAH; N.L. NURIDA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

The objectives of this research are : (1) to find enrichment substance from various organic material to increase the effectiveness of the soil conditioner, (2) to study the effect of humic substance contained in organic matter on soil properties and crop productivity. Research preceded by humic substance extraction from various organic matter. Reseach was conducted at green house using Ultisols from Taman Bogo, Center of Lampung. The experimental design used a factorial with four replications, treatment that tested were factor I: some organic material: municipal waste compost, manure compost, coal and peat, whereas factor II: enrichment types: extracted (HLS) and no extracted. The results of the research showed that HLS (humic like substances) from peat contained the highest humic substances (humat and fulvic acid), whereas HLS from manure contained the lowest humic substance. Manure was better applied in the form of compost than HLS. Organic materials with a high C/N ratio and low nutrient content (i.e. coal, peat, municipal wastes), that was applied in HSL form did not effect plant growth and biomass production significantly.
Impact of Extreme Climate Events on Rice-Based Farming System : Case Study at Bandung District Elza SURMAINI; R. BOER
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

Bandung District is found to be an area that is vulnerable to the El-Niño Southern Oscillation (ENSO) events. Whenever ENSO occurs, this district is always suffering from drought and flood leading to significant crop production lost. The vulnerable areas to flood and drought are Bojongsoang and Ciparay. The objectives of the study are : a) to identify problems related climate risks in rice-based farming system and the adaptation of mechanism to cope with climate extreme; b) to elucidate relationship of ENSO development with rainfall variability and effect of rainfall to flood and drought occurrences; and c) to evaluate economics loss due to climate extreme. Assessment of farming system at the study sites was conducted using Rapid Rural Appraisal (RRA) method. Farmer’s annual income were analyzed using frequency analysis of gross margin. The results showed that Sea Surface Temperature (SST) in Tropical Pacific has significantly affected on rainfall in Ciparay sub-District. The raise in SST anomaly is clearly a subject to delay the rainy season, to prolong the dry season period, and to decrease rainfall amount up to below normal, while the decreasing of SST anomaly resulting high intensity of rainfall in the rainy season and lower in the dry season. Whenever ENSO occurs, most farmers is always suffering from drought and flood leading to significant crop failure. Most farmers realized that climate has been changed and recently there is a trend uncertainly of rainfall pattern (proved by 84% of respondents). Nevertheless, they are still using traditional way to determine the beginning of planting season. Results showed that Benefit Cost Ratio (BCR) have smaller value in floods and droughts than normal conditions. Annual net income analysis suggests that many farmers will have negative annual income either at first or second crops fail. Based on the interviews with local authorities and farmers, it is needed to increase awareness of decision maker, extension workers and farmers to climate extremes and to improve their capacity to manage climate risks.
ANALYSIS OF WATER PRODUCTION POTENCIAL UNDER VARIOUS SCENARIO IN PANINGGAHAN-SINGKARAK WATERSHED PUJILESTARI, N.; TARIGAN, S.D.; SUBAGYONO, KASDI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

Paninggahan watershed is the sub watershed of the Singkarak Lake watershed. It has a largest part of managed forest in the upstream and the change of landuse from forest to mixture garden increasing rapidly. The study on the change of discharge related to the landuse change is the main focus of this research. The result shows that hydrological characteristic of Paninggahan watershed is still good, with the domination of secondary forest covering 53% of the watershed. Therefore this watershed still has large amount of water reserve. The result of monitoring landuse change from year 1984-2007, indicating that the rate of forest decreasing was 66 ha year-1 and the increasing of mixture garden was 39 ha year-1. The result of characteristic simulation discharge showed that forest degradation will increase total volume of discharge to 1.3 m3 s-1, whereas minimum debit will progressively decrease till 0.2 m3 s-1. The knowledge of the influence of landuse change due to decreasing of debit in the watershed becomes guidance for the continous watershed development.
Productivity Improvement of Sandy Soil Intensively Lowland Rice by Row Inserted Planting System SUBOWO G.; . YUSTISIA; . FIBRIANTI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

The research to increase rice planting index by row inserted planting system was conducted in sandy-loam soil of intensively lowland rice in Berbah, Yogyakarta. Yield at the initial/first rice planting was determined by N, P, and K fertilizer application, whereas inserted/second plant was determined by percentage of shadding from initial plant. The second planting (inserted at 20 days after first planting) yielded only ±50% compared to that of the first planting. Of three rice varieties studied, IR-64 had the lowest yield at the first planting, but by inserting this variety at the second planting it produced higher yield than those of Ciherang and Cimelati. The shorter plant height varieties, have a high potential to be developed into the inserted planting system. Improvement of plant distance to reduce shadding less than 50% is important to support the second plant growth. The selection of rice varieties for the first  planting and the second planting should consider the potential competition of plant from sunlight and soil nutrients. The results suggest that planting time of the second planting (insertion) should consider the availability of water and shadding potential for plant at the second planting.

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