cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Dermiyati
Contact Email
dermiyati.1963@fp.unila.ac.id
Phone
+62721781822
Journal Mail Official
j.tnhtrop@gmail.com
Editorial Address
Faculty of Agriculture, University of Lampung, Jl. Sumantri Brojonegoro No. 1, Bandarlampung 35145, Indonesia
Location
Kota bandar lampung,
Lampung
INDONESIA
Journal of Tropical Soils
Published by Universitas Lampung
ISSN : 0852257X     EISSN : 20866682     DOI : http://dx.doi.org/10.5400/jts.v25i1
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Journal of Tropical Soils (JTS) publishes all aspects in the original research of soil science (soil physic and soil conservation, soil mineralogy, soil chemistry and soil fertility, soil biology and soil biochemical, soil genesis and classification, land survey and land evaluation, land development and management environmental), and related subjects in which using soil from tropical areas.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Konservasi Alam dan Lahan
Articles 809 Documents
 1   2   3   4   5 
Relationship between depth of soil moisture assessment and turgidity of coffee plant in selected agroclimates Rudy Erwiyono; Aris Wibawa
JOURNAL OF TROPICAL SOILS Vol 13, No 2: May 2008
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2008.v13i2.111-122

Abstract

Observation on the relationship between the depth of soil moisture assessment and turgidity of coffee plant has been carried out at 3 different agroclimates by survey method, i.e. Andungsari experimental station (Andosol soil type, >1.000 m asl. high, and rainfall type of C), Sumberasin experimental station (yellowish-red Mediterranean soil type, 450-500 m asl. high, and rainfall type of C, and Kaliwining experimental station (low humic glei soil type, 45 m asl. high, and rainfall type of D) in order to assess the depth of soil moisture through soil profile influencing turgidity of coffee plants at three different agroclimates.    The method of assessment is by fitting the relationship between the depth of soil moisture assessment and turgidity of coffee plant and their determination coefficients through the period of dry season up to early rainy season.   Plant turgidity is evaluated from its relative water contents of the leaves sampled periodically at the same time as observation of soil moisture content.  Plant turgidity is affected by soil moisture condition up to a certain depth which looks to be typical of the agroclimates.  At Andungsari experimental station (high land) it is necessary to assess soil moisture through the soil profile up to 100 cm deep in order to evaluate water stress of the plants; inversely, at Kaliwining experimental station in order to evaluate water stress of the plants it is just justified from the soil moisture condition of the soil surface layers (0-25 cm).  Whereas at Sumberasin experimental station water stress of the plants could be predicted from soil moisture assessment of the surface layer depth or through the deeper layers of the soil profile either.  Andungsari-1 and Lini S-795 clones are more resistant to drought than Kartika-2 clone at Andisol soil type with C rainfall type and elevation > 1000 m asl.   BP-308 clone showed its response as relatively resistant to drought at yellowish red Mediterranean soil type with C rainfall type at elevation around 500 m asl.   Robusta coffee clone with no name at Kaliwining experimental station showed wilting sign, reduction of its turgidity, and falling leaves during the dry season, and positively responding to soil moisture increase.   An effort to maintain plant turgidity with increasing soil water stress could be done by managing atmospheric demand to be lower.  Practical implications of the findings might be discussed a bit more deeply in this paper. 
Impact of Land Use Change and Land Management on Irrigation Water Supply in Northern Java Coast Suria Darma Tarigan; Rudolf Kristian Tukayo
JOURNAL OF TROPICAL SOILS Vol 18, No 2: May 2013
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2013.v18i2.169-176

Abstract

In Indonesia, paddy irrigation covers an area of 7,230,183 ha. Ten percent (10%) of those area or 797,971 ha were supplied by reservoirs. As many as 237,790 ha (30%) of those area supplied by reservoirs are situated downstream of Citarum Watershed called Northern Java Coast Irrigation Area or Pantura. Therefore, Citarum watershed is one of the most important watershed in Indonesia. Citarum is also categorized as one of most degraded watershed in Java. The study aimed to evaluate influence of land use change on irrigation water supply in Citarum watershed and land management strategies to reduce the impact. Tremendous land use change occurred in the past ten years in Citarum watershed. Settlement areas increases more than a double during 2000 to 2009 (81,686 ha to 176,442 ha) and forest area decreased from 71,750 ha to 9,899 ha in the same time period. Land use change influences irrigation water supply through 2 factors: a) decreasing storage capacity of watershed (hydrologic functions) for dry season, and b) decreasing storage capacity of reservoirs due to the sedimentation. Change of Citarum  watershed hydrologic function was analyzed using 24 years’ time series discharge data (1984-2008) in combination with rainfall data from 2000 to 2008. Due to the land use change in this time period, discharge tend to decrease despite of increasing trendof rainfall. As a result irrigation area decreased 9,355 ha during wet season and 10,170 ha during dry season in the last ten years. Another threat for sustainability of water irrigation supply is reservoir sedimentation. Sedimentation rate in the past 10 years has reduced upper Citarum reservoir (Saguling) half-life period (½ capacity sedimented) from 294 to 28 years. If proper land management strategies be carried out, the half-life period of Saguling reservoir can be extended up to 86,4 yearsKeywords: Citarum watershed, improved land management, irrigation water supply, land use change, sedimentation [How to Cite: Tarigan SD and RK Tukayo. 2013.Impact of Land Use Change and Land Management on Irrigation Water Supply in Northern Java Coast. JTrop Soils 18 (2): 169-176. Doi: 10.5400/jts.2013.18.2.169][Permalink/DOI: www.dx.doi.org/10.5400/jts.2013.18.2.169]REFERENCESAsdak. 2004. Hidrologi dan Pengelolaan Daerah Aliran Sungai. Gadjah Mada University Press. Yogyakarta (in Indonesian).BBWSC [Balai Besar Wilayah Sungai Citarum]. 2011.  Peta Informasi Citarum 2011.  Direktorat Jenderal Sumber Daya Air Departemen Pekerjaan Umum (in Indonesian).Bols PL. 1978. Iso Erodents Map of Java Madura. Technical  Assistant Project ATA 105. Soil Research Institute, Bogor, Indonesia. 39 ppBPDAS [Balai Pengelolaan Daerah Aliran Sungai] Citarum Ciliwung. 2008a. Pengelolaan DAS Terpadu – DAS Citarum (Buku I: Laporan utama). BPDAS Citarum Ciliwung, Ditjen RLPS Dephut. Bogor (in Indonesian).BPDAS [Balai Pengelolaan Daerah Aliran Sungai] Citarum Ciliwung. 2008b. Pengelolaan DAS Terpadu – DAS Citarum (Buku II: Data dan Informasi). BPDAS Citarum-Ciliwung, Ditjen RLPS Dephut. Bogor (in Indonesian).Bruijnzeel LA.  2004. Hydrological functions of tropical forests: Not seeing the soil for the trees? Agric Ecosyst Environ 104: 185-228.Cita. 2012. Dua puluh dua (22) Hotspost in the Citarum River Basin. www.citarum.org. Accesed on 10 October 2012.ICWRM [Integrated Citarum Water Resources Management]. 2012.  Atlas Pengelolaan Sumberdaya Air Terpadu Wilayah Sungai Citarum. Cooperation between ADB and Bappenas (in Indonesian). Kimwaga RJ, F Bukirwa, N Banadda, UG Walic, I  Nhapi and DA Mashauri. 2012. Modelling the impact of land use changes on sediment loading into lakeVictoria using SWAT model: A Case of Simiyu Catchment Tanzania. Open Environ Eng J  5: 66-76.Legowo S, KI Hadihardaja and Azmeri. 2009.  Estimation of bank erosion due to reservoir operation in cascade  (Case Study: Citarum Cascade Reservoir). ITB J Eng Sci. 41: 148-166.Perum Jasa Tirta II. 2001. Pengalaman Mengelola Bendungan Besar Waduk Ir. H. Djuanda. Perum Jasa Tirta II. Jatiluhur (in Indonesian).Shi ZH, L Ai, NF Fang and HD Zhu. 2012. Modeling the impacts of integrated small watershed management on soil erosion and sediment delivery: A case study in the Three Gorges Area, China. J Hydrol 438: 156-167.Tukayo RK. 2011. Evaluasi perubahan penggunaan lahan DAS Citarum dan dampaknya terhadap suplai air irigasi. [Thesis]. Institut Pertanian Bogor (in Indonesian).Verhaeghe RJ, B. Adriaanse and SD Tarigan. 2010. Assessment of erosion sensitivity and watershed conservation interventions for Upper Citarum basin. TA 7189-INO: Institutional Strengthening for Integrated Water Resources Management (IWRM). 6Ci’s River Basin Territory, Component B2: Spatial planning.Wang G, H Jiang, Z Hu, L Wang and W Yue. 2012. Evaluating the effect of land use changes on soil erosion and sediment yield using a grid-based distributed modelling approach. Hydrol Processes 23: 35790-3592.Yan B., NF Fang, PC Zhang and ZH She.  2013. Impacts of land use change on watershed stream flow and sediment yield: An assessment using hydrologic modelling and partial least squares regression. J Hydrol 484: 26-37.Yang  H  H, O Jaafar, A El-Shafie and S Mastura, 2011. Impact of land-use changes toward base-flow regime in Lui and Langkat Dengkil sub-basin. Int J Phys Sci 6: 4690-4976. Zheng  H, L Zhang, R  Zhu, C  Liu, Y  Sato and Y Fukushima, 2009. Responses of streamflow to climate and land surface change in the headwaters of the Yellow River Basin. Water Resour Res 45 (W00A19). doi: 10.1029/2007WR006665.
Soil Enzyme Activities and Their Relationship to Total Soil Bacteria, Soil Microbial Biomass and Soil Chemical Characteristics of Organic and Conventional Farming Muhammad Abdul Aziz; Fahrizal Hazra; Selly Salma; Dedi Nursyamsi
JOURNAL OF TROPICAL SOILS Vol 23, No 3: September 2018
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2018.v23i3.133-141

Abstract

Soil properties such as physical, chemical, biological, microbiological and biochemical aspects affect on soil quality. Soil microbiological activities directly affect stability of ecosystems and soil fertility. The research aimed to determine soil microbial activities through soil enzyme activities and their relationship to total soil bacteria, soil microbial biomass, and soil chemical characteristics. The research was conducted at Laboratory of Soil Microbiology, Indonesian Soil Research Institute, Bogor from July 2015 to January 2016. Soil samples 0-10 cm depth were taken from organic and conventional farming of some commodities (tomato, carrot, maize, broccoli) from Bogor Regency, while those of rice were taken from Tasikmalaya Regency. Soil dehydrogenase, urease and cellulase activities were determined using some modified methods. The results showed that soil dehydrogenase and cellulase activities in organic farming were higher than those in conventional farming, whereas the soil urease activity in organic farming was lower than that in conventional farming. The total soil bacteria and soil microbial biomass were significantly and positively correlated with soil dehydrogenase, urease, and cellulose activities. Soil dehydrogenase, urease, and cellulose activities were very significantly and positively correlated with all soil characteristics tested, i.e. soil organic C, total N, potential P and K, available P and K, CEC, and pH, except that soil urease activity was very significantly and negatively correlated with soil pH. The results of this research indicated that organic farming is recommended for maintaining soil fertility and plant productivity; however, small use of urea fertilizer is still needed in the farming.
The Effect of Soil Moisture Content and Animal Manure Application on the Growth of Mendong (Fimbristylis globulosa (Retz.) Kunt) Yaya Sunarya; Enok Sumarsih
JOURNAL OF TROPICAL SOILS Vol 22, No 2: May 2017
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2017.v22i2.107-112

Abstract

The objective of the research was to study the interaction between soil moisture content and animal manure application on the growth of Mendong (Fimbristylis globulosa (Retz.) Kunt). The experiment was conducted in May until September 2016 in Kampung Lembur Sawah, Kamulyan Village, Manonjaya Subdistrict, Tasikmalaya Regency. A pot experiment was performed using a factorial design consisting of two factors and three replicates. The factors were soil moisture content (K) consisting of four levels i.e. k1 (100% field capacity (FC)), k2 (150% FC), k3 (200% FC), and k4 (250% FC); and animal manure application (P) consisting of p1 (cattle manure), p2 (broiler chicken manure), and p3 (sheep manure). The indicators of plant growth, i.e. plant height, number of tiller, fresh weight and dry weight of plant biomass, shoot/root ratio, percentage of  the >75cm-long stems, water consumption, and water use efficiency (WUE) were measured.  The results showed that  there was an interaction effect between the soil moisture content and animal manure application on the number of tiller at 45 days after planting (DAP), the percentage of the >75 cm-long stems, and the water consumption. The sheep manure application at any levels of soil moisture content resulted in better effect on the growth of Mendong, water use efficiency, and quality of stem (the percentage of the >75cm-long stems). The soil moisture content above the field capacity resulted in better effect on the growth of Mendong, indicating that Mendong is more suitable to grow on the land with the soil moisture content above the field capacity or saturated soil during the whole growing period. Keywords: Manure, Mendong, soil moisture content
Potency of Agroindustrial Wastewaters for Increasing Dissolution of Phosphate Rock Fertilizers Ainin Niswati; Sri Yusnaini; . Sarno
JOURNAL OF TROPICAL SOILS Vol 19, No 1: January 2014
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2014.v19i1.43-51

Abstract

Agroindustrial wastewaters were considered not maximum used in Lampung Province since it has acidic properties that can be used as an acid solvent. This study aimed was to explore the most potential agroindustrial wastewaters in dissolving phosphate rock by acidulation in the laboratory scale. The experimen were arranged by factorial i.e. first factor were phosphate rock origin (Sukabumi, west Java and Selagailingga, central Lampung) and second factor was kinds of solvent (agroindustrial wastewaters of pineapple, tapioca, tofu industry, and palm oil as well as a conventional acid solvent such as HCl, H2SO4, and CH3COOH).  The incubation process were 0, 1, 2, and 3 month. The results showed that agroindustrial wastewaters that have highest potency for solubizing phosphate rock was industrial tofu wastewaters and followed by industrial wastewaters of tapioca, palm oil, and pineapple. Both the conventional  acid  and  agroindustrial  wastewaters    solvent  have  a  big  potency  for  solubilize  phosphate  rock, however, its highest soluble P-value was not match with the ISO criteria for phosphate fertilizers Quality I (SNI) because it has not reached the solubility of 80% of its total P2O5, but has been qualified as a fertilizer both the quality phosphate A, B, and C (SNI).Keywords: Acidulation, agroindustrial wastewater, P fertilizer, phosphate rock [How to Cite: Ainin N, S Yusnaini and Sarno. 2014. Potency of Agroindustrial Wastewaters to Increase the Dissolution of Phosphate Rock Fertilizers. J Trop Soils 19: 43-51. Doi: 10.5400/jts.2014.19.1.43]    
Seasonal Variation of Yields and Nutrient Uptakes of IR-64 Grown in Terraced Paddy Field System Sukristi yonubowo; Gijs Du Laing
JOURNAL OF TROPICAL SOILS Vol 16, No 3: September 2011
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2011.v16i3.201-210

Abstract

In the past, most rice study was carried out in irrigated lowland rice and less or no attention was paid to the terraced paddy field system. Study on seasonal rice biomass production and nutrient uptake variation of IR-64 variety cultivated in terraced paddy field system was carried out in Keji Village, Ungaran Sub district during the wet season 2003-04 and dry season 2004. The aim of the study was to evaluate the seasonal variation of rice biomass productions, nutrient concentrations and nutrient uptakes of IR-64. Data were taken from four treatments, namely conventional farmer practice, conventional farmer practices + rice straw, improved technology and improved technology + rice straw. For the conventional farmer practice, only 50 kg of urea ha-1 season-1 was applied. Meanwhile, about 100 kg each of urea, triple super phosphate, and potassium cloride ha-1 season-1 were applied in the improved technology treatments. About 33% of rice straw produced from the previous season was recycled in the treatments of conventional farmer practices + rice straw and improved technology + rice straw. Each treatment was replicated three times and arranged in a Randomised Completely Block Design. Plants were sampled five times, at 45, 60, 75, 90 and 105 days after transplanting. The results indicated that overall production of the improved technology + rice straw treatment was significantly higher than the other treatments both in the wet season 2003-04 and the dry season 2004. Rice grains and rice residues in the dry season were higher than in the wet season, except for the rice straw. However, statistically, there were no significant variations of rice biomass production between the wet season 2003-04 and the dry season 2004. When the rice straw addition was considered, only rice grain production of the dry season was consistently greater than the rice grain production of the wet season. Concentrations of N, P, and K in shoots and roots significantly decreased during rice growth. In contrast to the concentrations, the nutrient uptake increased by the time of rice growth. The highest nutrient concentrations both in the wet and dry season were observed at 45 days after. Contrary to the nutrient concentrations, the highest N, P, and K uptakes were taken place at harvest.  Seasonally, nutrient uptakes at harvest in the dry season were higher than in the wet season, but statistical evidences were not consistent. As only rice residues were left in the field, the nutrient amounts taken up by rice straw and rice grains reflect the nutrients removal from the field through harvest. The total nutrients removal ranged between 114 and 119 kg N, 10 and 12 kg P, 133 and 148 kg K ha-1 season-1.
Correlation between Soil Test Phosphorus of Kaolinitic and Smectitic Soils with Phosphorus Uptake of Lowland Rice Mohammad Masjkur
JOURNAL OF TROPICAL SOILS Vol 14, No 3: September 2009
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2009.v14i3.205-209

Abstract

Correlation between soil test phosphorus (P) and plant-available P parameters were affected by soil properties, such as soil pH, particle-size composition, and mineralogy. The objectives of this research were: (1) to determine P concentration extracted by several soil P test method in kaolinitic and smectitic soil, and (2) to determine correlation between soil P test and soil properties, P fractions, P sorption parameters, and P uptake of lowland rice. The soil P test in kaolinitic and smectitic soil used solutions of HCl 25%, Truog, Olsen, Bray1, Mehlich1, and Morgan Venema and were correlated with P uptake of lowland rice in field experiment. Concentration of  Truog-P in kaolinitic soil was significantly higher than smectitic soil, while concentration of  Morgan-P in kaolinitic soil was significantly lower than smectitic soil. Concentration differences of HCl 25%-P, Olsen-P, Bray1-P, and Mehlich1-P between kaolinitic and smectitic soil were not significant.  In kaolinitic soil correlation between HCl 25%-P, Olsen-P, Bray1-P, and Mehlich1-P, and Morgan-P with P uptake of lowland rice were not significant. In smectitic soil HCl 25%-P, Olsen-P, Bray1-P, and Mehlich1-P correlated significantly with P uptake of lowland rice, while Morgan-P was not significant.
The Nutrient Uptake Efficiency, Crop Productivity and Quality of Rice Bean in Dry Land Lolita Endang Susilowati; Uyek Malik Yakop; Lestari Ujianto; Bambang Hari Kusumo
JOURNAL OF TROPICAL SOILS Vol 20, No 1: January 2015
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2015.v20i1.1-9

Abstract

Rice bean is a group of beans that are rich in carbohydrates, proteins and fats. This plant is resistant to pests and diseases, as well as the broad adaptability.  This study aims to obtain an efficient fertilization pattern on rice bean cultivation in dry land. The treatments consisted of 9 fertilization patterns which were RP0: no fertilizer (control); RP1: 100%  recommendation fertilizer (50 kg Urea and 100 kg SP-36 ha-1); RP2: 5 Mg ha-1 manure plus 50% recommendation fertilizer; RP3: RP2 plus MVA; RP4: 5 Mg ha-1 Crotalaria sp compost plus 50% recommendation fertilizer; RP5: RP4 plus VAM; RP6: 2.5 t ha-1 manure, 2.5 Mg ha-1 Crotalaria sp compost plus 50% recommendation fertilizer; RP7: 1.5 Mg ha-1 manure, 1 Mg ha-1 Crotalaria sp compost plus 50% recommendation fertilizer; RP8: RP7 plus MVA. Fertilization treatments were arranged in RCBD and each treatment was repeated 3 times. The fertilization treatments had no significant effect on NUE. Productivity of  rice bean in RP3 and   RP5 reached 3.75 Mg ha-1, in RP2 and RP4 achieved 2.64 Mg ha-1, and in   the control treatment reached 1.94 Mg ha-1. Carbohydrate content  in seeds increased by 20% in the fertilization treatments compared to the control. Protein and anthocyanin content in all treatments were not significantly different. The combination of 5 Mg organic fertilizer (manure and / or Crotalaria compost), 50% recommendation  fertilizer plus MVA was an efficient fertilization pattern to improve P fertilizer uptake efficiency (PUE), productivity and quality of rice bean crop in dry land.  [How to Cite: Lolita ES, UM Yakop, L Ujianto, and B Hari Kusumo. 2015. The Nutrient Uptake Efficiency, Crop Productivity and Quality of Rice Bean in Dry Land. J Trop Soils 19: 1-9. Doi: 10.5400/jts.2015.20.1.1][Permalink/DOI: www.dx.doi.org/10.5400/jts.2015.20.1.1]
The Reactions of Common Chemical Fertilizers in An Ultisol and Their Effects on Cowpea Performance Oyeyiola Yetunde Bunmi; Omueti John Ajayi
JOURNAL OF TROPICAL SOILS Vol 24, No 1: January 2019
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2019.v24i1.25-32

Abstract

Chemical fertilizers (CF) are the major input on arable farms in Nigeria. Current increasing rate of nutrient depletion in CF treated soils calls for the need to study their reactions in soils. To achieve this, three CF based treatments, namely NPK 15:15:15 applied at 40 kg P2O5 ha-1, Urea applied at 20 kg N ha-1  mixed with Single superphosphate at 40 kg P2O5 ha-1, and single superphosphate at 40 kg P2O5 ha-1  mixed with Gliricidia sepium leaves at 20 kg N ha-1  were studied. Sole lime (CaCO3) at 1 Mg ha-1 and a plot that received no amendment were compared. Cowpea was grown for two consecutive cropping seasons in 2012 and 2013 on the treated fields. The results indicated that CF reduced soil pH from initial 4.8 to 4.0. The NPK 15:15:15 fertilizer was the most severe of the CF tested, removing up to 133% alkalinity from the soil relative to lime. The NPK 15:15:15 reduced calcium saturation (from 25% to 21%) and magnesium saturation (from 12% to 8.3%) and increased acidity saturation (from 53% to 66%) with significant reductions in organic carbon content (from 13.2 g kg-1 to 11.0 g kg-1). Precaution including co-application of CF with organic materials such as Gliricidia sepium leaves can benefit for the soils.
The Effects of Various Water Table Depths on CO2 Emission at Oil Palm Plantation on West Aceh Peat Etik Puji Handayani; Meine Van Noordwijk; Kamarudin Idris; Supiandi Sabiham; Sri Djuniwati
JOURNAL OF TROPICAL SOILS Vol 15, No 3: September 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i3.255-260

Abstract

The Effects of Various Water Table Depths on CO2 Emission at Oil Palm Plantation on West Aceh Peat (EP  Handayani, M van Noordwijk, K Idris,  S Sabiham and S Djuniwati):  Changes in the depth of water table influenced carbon cycling in peatlands, and affected the sources and sinks of carbon dioxide.  The effects of depth of water tables in oil palm plantations on the emission of CO2 were studied. CO2 emissions of peatland were measured in Meulaboh, West Aceh using cylindrical chambers and  air samples from the chambers were analyzed by gas chromatography. Five-point transects perpendicular to drainage canals provided variation in the depth of water tables for the samples. Data from oil palm fields were compared to data from an adjacent swamp forest. The data confirmed that  the increasing depth of water table was accompanied by the increasing in microbial activity that was measured by CO2 emission.  The CO2 emissions from chambers with additional root zones were higher than from bulk soil chambers between one to four times.

Page 3 of 81 | Total Record : 809

 1   2   3   4   5 

Filter by Year

2008 2025


Reset
Filter By Issues
All Issue Vol 30, No 3: September 2025 (in Progress) Vol. 30 No. 3: September 2025 (in Progress) Vol. 30 No. 2: May 2025 Vol 30, No 2: May 2025 Vol. 30 No. 1: January 2025 Vol 30, No 1: January 2025 Vol 29, No 3: September 2024 Vol. 29 No. 3: September 2024 Vol. 29 No. 2: May 2024 Vol 29, No 2: May 2024 Vol 29, No 1: January 2024 Vol. 29 No. 1: January 2024 Vol. 28 No. 3: September 2023 Vol 28, No 3: September 2023 Vol 28, No 2: May 2023 Vol. 28 No. 2: May 2023 Vol. 28 No. 1: January 2023 Vol 28, No 1: January 2023 Vol. 27 No. 3: September 2022 Vol 27, No 3: September 2022 Vol 27, No 2: May 2022 Vol. 27 No. 2: May 2022 Vol. 27 No. 1: January 2022 Vol 27, No 1: January 2022 Vol 26, No 3: September 2021 Vol. 26 No. 3: September 2021 Vol 26, No 2: May 2021 Vol. 26 No. 2: May 2021 Vol. 26 No. 1: January 2021 Vol 26, No 1: January 2021 Vol. 25 No. 3: September 2020 Vol 25, No 3: September 2020 Vol. 25 No. 2: May 2020 Vol 25, No 2: May 2020 Vol. 25 No. 1: January 2020 Vol 25, No 1: January 2020 Vol 24, No 3: September 2019 Vol. 24 No. 3: September 2019 Vol 24, No 2: May 2019 Vol. 24 No. 2: May 2019 Vol 24, No 1: January 2019 Vol. 24 No. 1: January 2019 Vol 23, No 3: September 2018 Vol. 23 No. 3: September 2018 Vol 23, No 2: May 2018 Vol. 23 No. 2: May 2018 Vol 23, No 1: January 2018 Vol. 23 No. 1: January 2018 Vol. 22 No. 3: September 2017 Vol 22, No 3: September 2017 Vol. 22 No. 2: May 2017 Vol 22, No 2: May 2017 Vol. 22 No. 1: January 2017 Vol 22, No 1: January 2017 Vol. 21 No. 3: September 2016 Vol 21, No 3: September 2016 Vol. 21 No. 2: May 2016 Vol 21, No 2: May 2016 Vol 21, No 1: January 2016 Vol. 21 No. 1: January 2016 Vol. 20 No. 3: September 2015 Vol 20, No 3: September 2015 Vol 20, No 2: May 2015 Vol. 20 No. 2: May 2015 Vol 20, No 1: January 2015 Vol. 20 No. 1: January 2015 Vol. 19 No. 3: September 2014 Vol 19, No 3: September 2014 Vol 19, No 2: May 2014 Vol. 19 No. 2: May 2014 Vol. 19 No. 1: January 2014 Vol 19, No 1: January 2014 Vol 18, No 3: September 2013 Vol. 18 No. 3: September 2013 Vol 18, No 2: May 2013 Vol. 18 No. 2: May 2013 Vol. 18 No. 1: January 2013 Vol 18, No 1: January 2013 Vol. 17 No. 3: September 2012 Vol 17, No 3: September 2012 Vol 17, No 2: May 2012 Vol. 17 No. 2: May 2012 Vol. 17 No. 1: Januari 2012 Vol 17, No 1: Januari 2012 Vol. 16 No. 3: September 2011 Vol 16, No 3: September 2011 Vol. 16 No. 2: May 2011 Vol 16, No 2: May 2011 Vol 16, No 1: January 2011 Vol. 16 No. 1: January 2011 Vol. 15 No. 3: September 2010 Vol 15, No 3: September 2010 Vol. 15 No. 2: May 2010 Vol 15, No 2: May 2010 Vol 15, No 1: January 2010 Vol. 15 No. 1: January 2010 Vol 14, No 3: September 2009 Vol. 14 No. 3: September 2009 Vol 14, No 2: May 2009 Vol. 14 No. 2: May 2009 Vol 14, No 1: January 2009 Vol. 14 No. 1: January 2009 Vol. 13 No. 3: September 2008 Vol 13, No 3: September 2008 Vol 13, No 2: May 2008 Vol. 13 No. 2: May 2008 Vol. 13 No. 1: January 2008 Vol 13, No 1: January 2008 More Issue