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Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment)

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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 301 Documents

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UJI EFEKTIVITAS BIO-ORGANIC FERTILIZER (PUPUK ORGANIK HAYATI) DALAM MENSUBSTITUSI KEBUTUHAN PUPUK ANORGANIK PADA TANAMAN SWEET SORGHUM [SORGHUM BICOLOR (L.) MOENCH] Ester LN Lumbantobing; Fahrizal Hazra; Iswandi Anas
Jurnal Ilmu Tanah dan Lingkungan Vol 10 No 2 (2008): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The aim of research was to examine the effectiveness of bio-organic fertilizer to substitute inorganic fertilizer necessity on sweet sorghum [Sorghum bicolor (L.) Moench] vegetative growth. This research was carried out in the University Farm green house Cikabayan and in the Leuwikopo Experiment Field, Institut Pertanian Bogor. The green house experiment used completely randomized design with six treatments, namely: 1. No fertilizer (control), 2. 100%NPK, 3. 50%N + DOP, 4. 50%NPK + Fertismart, 5. 50%NPK + Ponti, dan 6. 50%NPK + Biost. The field experiment used completely randomizes block design with seven treatments, namely: 1. No fertilizer (control), 2. 50%NPK, 3. 100%NPK, 4. 50%N + DOP, 5. 50%NPK + Fertismart, 6. 50%NPK + Ponti, and 7. 50%NPK + Biost. Materials which was used were super sugar variety, NPK fertilizers, bio-organic fertilizer Fertismart, Ponti, Biost, and organic fertilizer Double Organic Phosphate (DOP).The results of greeen house research showed that bio-organic fertilizer could increase crop height, number of leaves, wet weight upper crop, dry weight upper crop, wet weight root, and dry weight root of sweet sorghum than control and same with treatment of 100%NPK. Treatment of 50%NPK + Biost could increase crop height (47.8%) than control and same with treatment of 100%NPK. Treatment of 50%NPK + Ponti increase dry weight root (59%) than control and same with treatment of 100%NPK.The results of field research showed that bio-organic fertilizer Fertismart could increase wet weight upper crop, crop height (42.8%) and number of leaves (39.5%) than control, and same with 100%NPK. It means that bio-organic fertilizer could substitute about 50% inorganic necessity on sweet sorghum.Keywords: bio-organic fertilizer, Azotobacter, Azospirillum, phosphate solubilizing microbes.

KAJIAN SEBARAN KADMIUM DALAM SAYURAN DAN TANAH DI BANTARAN SUNGAI CIKARANG BEKASI LAUT (CBL) Alfandi Alfandi; Salaudin Djalal Tandjung; Bostang Radjagukguk; Narsito Narsito
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 1 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Contamination of contaminants in river are more due to human activities (antropogenic), such as the disposal of industrial waste and domestic waste. One type of inorganic pollutants that is toxic to living organism including human is cadmium (Cd). The movement of Cd in river water into the soil along the river is naturally and by human activity. The objectives of this study was to examine the distribution of Cd in soil on the river banks of the Cikarang Bekasi Laut (CBL) river, in Bekasi West Java, based on the distance from the pollutant sources during rainy and dry season (spatially and temporally). This study used a survey method in sampling plants, water and soil. Sampling was conducted at 10 sites and 10 observation times (dry and rainy season). The analyses of Cd content were conducted on plant, water and soil samples. In addition, pH was also measured in soil and water samples. Vegetable samples were collected from the field were kale, spinach and caisin. Statistical analyses comparized of analyses of variance (F test), comparatine analyses of the mean and correlation analyses. The results showed that the contents of Cd in the soil samples that close to the surface of the river water were higher than those of other soil samples. This was caused by the movement of Cd from the river water naturally due to changes in water level or river discharge fluctuation, as a consequence of changes in dry and rainy seasons. At sites further from the river (on land of cultivation), the presence of Cd in soil was mainly due to the use of river water for irrigation. Watering plant was mostly done during the dry season, at which the concentration of Cd in river water was relatively higher. The content of Cd in plant tissue (Spinach, kale and caisin) had a positive correlation with the content of Cd in the soil. The average content of Cd from the three plants were spinach > kale > caisin, consecutively. Keywords: antropogenic, cadmium (Cd), Cd uptake, pollution, riverbanks

PENGARUH PEMBERIAN BAHAN HUMAT DAN KOMPOS SISA TANAMAN TERHADAP SIFAT FISIK TANAH DAN PRODUKSI UBI KAYU Dwi Putro Tejo Baskoro
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 1 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

A study about the effect of humic substance and green manure on soil physical characteristics and cassava production was conducted on a Sandy loam soil in Sukadana-East Lampung. Humic substance was obtained from Proper Humic, whereas green manure was obtained from crop residue and weed surrounding the experimental site. Humic substance applied was 15 liters ha-1 and green manure applied was 2 tons ha-1. The result of the experiment indicated that in general, humic substance and green manure applied had no significant effect on soil physical characteristics. However, there was a tendency that water content at field capacity (pF 2.54) and water available capacity increased as humic substance and green manure were applied. Similar tendency was also observed for water retained in soil where field soil water content at 7 consecutive no-raindays was slightly higher at soil with humic substance and green manure. With the application of humic substance and green manure, soil could hold water in a longer time. The effect of green manure on field soil water content was, however, slightly better than that of humic substance. Nevertheless, application of humic substance 15 l ha-1 increased significantly cassava growth and production and the effect was better than those from green manure with the dosage of 2 ton ha-1. Key words: cassava production, humic substance, water retention

KETERKAITAN FAKTOR BIOFISIK DAN PENGUASAAN LAHAN HUTAN DENGAN KERAWANAN KEBAKARAN HUTAN DALAM PERSPEKTIF PENATAAN RUANG : STUDI KASUS PADA WILAYAH HTI DI JAMBI Andri Yushar Andria; Baba Barus; Fredian Tonny Nasdian
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 1 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The occurrence of forest fire in Jambi can be considered as an annual phenomenon. It happenes almost every year in every type of land uses, including industrial timber plantation area of PT Wirakarya Sakti. The drivers of fire are a combination between natural factors and an anthropogenic factor, which in this case is traditional land preparation activity conducted by local farmer. To maintain their source of livelihoods, farmers convert forest land into seasonal agricultural land (ladang) using ‘slash and burn’ method. This activity occures along with the changes in social economic condition. Currently, although this circumstance has existed for a long time, availability of information regarding forest fire-prone area especially in industrial timber plantation is really minutes. Based on this condition, this study aims to model and develop spatial information on the vulnerability forest fire in industrial timber plantation (HTI) area. The specific objectives are: 1) To identify biophysical factors that affect of forest fire, 2) To identify the significance of community activities and land tenure factors to forest fires event in the area, 3) To analyze communities motivations and actions in regards to forest fire events, and 4) To analyze synergy between actual land use with HTI Spatial Planning (RTR-HTI). The results of using logistic regression analysis showed that the most significance biophysical variable are soil type and rainfall, while on the anthropogenic variable are the distance from land and the distancefrom road. Pearson correlation analysis and regression analysis suggested that community motivations and actions are affected by social indicators. Based on these facts, spatial analysis using GIS was conducted. The result showed that the value of land use suitable (LUS) was 88.1% (218,289 ha) and not suitable was 11.9% (29,589 ha) from the land allocation of RTR-HTI. Using Analytic Hierarchy Process (AHP), the relative importance weight for each factor was derivied to be included in hazard model. The hazard map showed that fire hazard can be classified into high category (118,925 ha), moderate category (175,272ha) and low category (11,369 ha). Keywords: land use, land tenure community, vulnerability forest fire

VIABILITAS INOKULAN DALAM BAHAN PEMBAWA GAMBUT, KOMPOS, ARANG BATOK DAN ZEOLIT YANG DISTERIL DENGAN IRADIASI SINAR GAMMA Co-60 DAN MESIN BERKAS ELEKTRON Sindy Marieta Putri; Iswandi Anas; Fahrizal Hazra; Ania Citraresmini
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 1 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Carrier is one of the important factor to determine the quality of biofertilizer. The inoculant carriers should contain no or less microbial contaminant. The purpose of this research was to investigate viability of Azospirillum, Azotobacter and Phosphate Solubilizing Fungi inoculants in carrier material that were sterilized by Gamma Irradiation Co-60 and Electron Beam Machine (EBM). Each inoculants was injected to the sterilized peat, compost, coconut shell charcoal and zeolite. Viability of inoculants in steriled carrier was evaluated at 0, 7, 14, 42 and 70 days after preparation. The stirage was done in incubator at 25ºC. The result of viability of Azospirillum, Azotobacter and Phosphate Solubilizing Fungi inoculants on sterilized carrier material by Gamma Irradiation Co-60, EBM and autoclave tended to decline during storage 70 days at room temperature (250C). Viability of Azospirillum inoculants in zeolite sterilized by Gamma Irradiation Co-60 and autoclave gave the highest numbres of viable cells. Storage of these inoculants at 25ºC for 70 days only reduce the number of viable cells by 11.1%. Viability of Phosphate Solubilizing Fungi inoculants in coconut shell charcoal or compost sterilized by Gamma Irradiation Co-60 went down by 99.8% after 70 days. The sterilization of carriers by using autoclave or Gamma Irradiation Co-60 were better than EBM sterilization. . Keywords: Carrier, Electron Beam Machine, Gamma Irradiation Co-60, sterilization, viability

PROFIL KELARUTAN LIMBAH MINYAK BERAT AKIBAT PENAMBAHAN BAHAN PENCAMPUR Charlena Charlena; Iswandi Anas; Zainal Alim Mas'ud; Ahmad Syahreza; Niken Dyah Wanodyanti
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 1 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Heavy Oil Waste (HOW) is on of the most important petroeum waste. In the recent years, many contamination of soil or water by HOW have been reported. Bioremediation is one of the alternative technology to clean the HOW contaminated soil since it is enviromentally friendly, effective, efficient and low cost. The contaminated soil is diluted in water to form bioslurry. However, the solubility of HOW in water is very low. To increase HOW solubility in water, addition of four mixing agents were tested namely: Sodium Tripolyphosphate (STPP), Carboxymethyl cellulose (CMC), quart sand and pumice stone. The main characteristics of HOW were solid TPH was 17.2%, water content was 1.96% and Cu and Hg content was 1.49 ppm and 3.33 ppb, respectively. The parameters determined were turbidity, solid TPH, liquid TPH pH and COD. The results showed that (1) the highest turbidity was in the STPP addition; (2) the lowest solid TPH was in the addition of pumice stone; (3) the highest liquid TPH was in the STPP addition;(4) the pH varied from 3.6 to 7.9; (5) the ghigest COD was in the addition of STPP. From these results it can be concluded that the best mixing agent to increase the solubility of HOW in soil slurry was STPP. Keywords: heavy oil waste (HOW), mixing agents, solubility of HOW

PEMANFAATAN STEEL SLAG INDONESIA DI BIDANG PERTANIAN Suwarno Suwarno
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 1 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Steel slag is by-product formed in the process of steel manufacturing. In Europe, USA, Japan, China, Korea, and Hawai steel slag has been utilized in agriculture as a liming material for improving acid soil or as Si source for paddy rice and sugar cane plants. Currently, Indonesia produces annually about 540,000 ton of electric furnace (EF) – one kind of steel slag; however none of this is being used in agriculture. Results of researches indicated that Indonesian steel slag could be utilized as a liming material, Si source, as well as peat soil amendment. As a liming material, effect of Indonesian steel slag on growth of plant was slightly better than those of calcite and dolomite. In combination with phosphatic guano, Indonesian steel slag increased effectiveness of phosphatic guano for direct application as P fertilizer. Phosphatic guano was significantly more effective when it was combined with steel slag than be combined with dolomite or calcite. As Si source for paddy rice plant, Indonesian steel slag improved growth and yield of paddy rice both grown on mineral soil containing low available Si on peat soil. The effect of Indonesian steel slag on paddy rice grown on peat soil was significantly better than that of on mineral soil. As peat soil amendment, Indonesian steel slag enhanced growth and bole volume of Acacia cracicarpa grown on peat soil. Keywords: agriculture, Indonesian steel slag, utilization

KARAKTERISTIK PEDOLOGI DAN PENGELOLAAN REVEGETASI LAHAN BEKAS TAMBANG NIKEL: STUDI KASUS LAHAN BEKAS TAMBANG NIKEL POMALAA, SULAWESI TENGGARA Widiatmaka Widiatmaka; Suwarno Suwarno; Nandi Kusmaryandi
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 2 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Post-mining land management needs to be done by taking into account a holistic approach concerning the improvement of physical, chemical and biological properties of soil as growth media, in order to support the rehabilitation plans. The objective of this study were: (i) to conduct quantitative and comprehensive an inventory of pedological properties of nickel post mining land, (ii) to analyze the potential and limitations of post mined land, (iii) act designed environmental management, based on the characteristics of the revegetation of the land and the environment. The results showed that the soil in Pomalaa could be classified in Typic Hapludox, clayey, mixed, isohypertermic (P1) dan Typic Hapludalfs, loamy, mixed, isohypertermic (P2), while the material in ex mining area are overburden or parent material. The soil has developed from peridotite and peridotite-serpentinite ultramafic material. This soil has low natural fertility and require efforts to improve the physical properties. Ex-mining area has a high rate of erosion. Poor tree growth in revegetation area has been determined caused by a deficiency of Ca, Fe, Cu, or Mn. The possibility of Ni and Cr toxicity in plants needs to be further investigated. Local resources in the form of slag can be used for revegetation, especially converter slag. The results obtained from this study can be used to give the advice of post-nickel mining land management, based on land characteristics. A better management advice covers two issues, namely improvements of the management action actually implemented and improvements in technical rehabilitation.Keywords: Pedological processes, post nickel mining land, revegetation

KAJIAN PENGARUH SITU TERHADAP RESPON HIDROLOGI DI DAS PESANGGRAHAN MENGGUNAKAN MODEL HEC-HMS Selamet Kusdaryanto; Dwi Putro Tejo Baskoro; Suria Darma Tarigan
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 2 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Pesanggrahan river with total extent of watershed about 13,384 ha is one of rivers flowing through Jakarta City that causes flood problem every years. Many effort has been done to reduce flood problem, among others is to build reservoir in watershed, but the effectiveness of reservoir is still questionable. A research aimed to analyze gap of reservoir capacity changes and its influence on hydrological response and to arrange the scenario of reservoir capacity change to improve hydrological response in Pesanggrahan Watershed was done using HEC-HMS Model. Reservoir capacity change scenarios applied to the actual rainfall condition and designed rainfall condition with a certain recurrence interval. The scenarios consist of: reservoir with the exsisting condition (scenario 1), increase depth of reservoir to 5 meters (scenario 2) and build 6 reservoirs on Pesanggrahan watershed (scenario 3). The model was calibrated using daily discharge data from the date of January 10th to April 30th 2009. Model calibration result shows that model is quite accurate to predict peak discharge in Pesanggrahan Watershed with Nash-Sutcliffe efficiency value = 0.9817 and R2 =0.975. Simulation results showed that the reservoir is effective in decreasing its local effect to peak discharge (reservoir area). The presence of reservoir with existing condition reduce only 6.38 % of the peak run off in outlet Kebon jeruk, whereas building of 6 reservoir will reduce 24.6 % of the peak run off in outlet Kebon jeruk.Keywords : HEC-HMS Model, peak discharge, Reservoir capacity change

KARAKTERISTIK LAHAN PADA PERTANAMAN DUKU (Lansium Domesticum Corr) DI PROVINSI JAMBI Hendri Purnama; Atang Sutandi; Widiatmaka Widiatmaka; Komarsa Gandasasmita
Jurnal Ilmu Tanah dan Lingkungan Vol 12 No 2 (2010): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Duku is one of horticultural crops and tropical fruits that has high commercial value. Government of Jambi Province intends to maintain and develop duku through crop improvements and extensification. For that purpose it needs to understand crop requirement related to land characteristic. The aims of this research were to identify land characteristics that associated to duku productivity, describe the optimum land characteristics to support maximum duku productivity, and to investigate the significance influence of land characteristics on optimum duku productivity. The study used primary and secondary data. Primary data was collected through field surveys, including biophysical properties and crop productivity. Secondary data included climate and duku distribution in Jambi Province. Data analysis were used line boundary method analysis and discriminant analysis. Biophysical properties and productivity were plotted on scatter diagram and the distribution of points form a model of the boundary line. The model of the biophysical properties and production relationship could determine land characteristics that associated with optimum productivity. The optimum productivity was associated with soil texture of sandy clay, sandy clay loam, loam, and clay loam, soil depth > 56 cm, soil pH between 4.5 to 6.4, C organic content > 0.60%, CEC was > 16.0 cmol kg-1, base saturation was > 5%, available P was > 1.50 ppm, exchangeable K content > 0.50 cmol kg-1, and Al saturation was < 43%. The discriminant analysis showed that the soil pH had the highest contribution on duku productivity.Key word: Boundary line, Duku, land characteristic, productivity

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