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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Agromet Forum Pasca Sarjana Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Jurnal Ilmu Lingkungan Jurnal Perikanan dan Kelautan JURNAL TEKNOLOGI LINGKUNGAN Journal of Tropical Soils Jurnal Keteknikan Pertanian Sains Tanah Majalah Geografi Indonesia Jurnal Penelitian Hutan Tanaman Agrovigor: Jurnal Agroekoteknologi Jurnal Sumberdaya Lahan Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Agroteknos Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Tataloka Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Caraka Tani: Journal of Sustainable Agriculture Informatika Pertanian JTERA (Jurnal Teknologi Rekayasa) Jurnal Irigasi Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Journal of Environmental Engineering & Waste Management Forest and Society Musamus AE Featuring Journal Jurnal Sumberdaya Lahan Jurnal Tanah dan Iklim Jurnal Penelitian Kehutanan Wallacea Policy Brief Pertanian, Kelautan, dan Biosains Tropika
Suria Darma Tarigan
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian IPB, Jl. Meranti Kampus IPB Dramaga, Bogor 16680
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Short-term natural restoration effects on groundwater table in several peatland conditions of Acacia plantation forests Qalbi, Andria Harfani; Tarigan, Suria Darma; Barus, Baba; Sudadi , Untung
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.8191

Abstract

One significant approach to restore the ecosystem function of degraded peatlands is natural restoration. This study evaluated the effect of short-term natural restoration on groundwater table in several peatland conditions in the Acacia plantation retired since 2016. Four types of land: burned land, Acacia post-harvest land, retired Acacia plantation forest, and the natural forest were considered as our study area. This study analyzed soil properties and remote sensing using the NDVI index to evaluate vegetation density in 2016, 2019, and 2022. This study found that natural restoration in the period of 2016-2022 increased vegetation density, almost similar to natural forest vegetation. Both soil properties and groundwater table on Acacia plantation forest and natural forest were not significantly different. High saturated hydraulic conductivity and low bulk density on both areas supported the stability of peat hydrology. In addition, variations in rainfall affected the pattern of changes in groundwater table, with a decrease during the dry season and an increase during the rainy season. The findings of this study confirm that short-term natural restoration can restore hydrological and vegetation functions in degraded peatlands, especially in Acacia plantation areas. These findings can be scientific recommendations for sustainable peatland management.
Impact of Rainforest Conversion on Surface Runoff and Soil Erosion in Nopu Upper Catchment of Central Sulawesi Hidayat, Yayat; Sinukaban, Naik; Pawitan, Hidayat; Tarigan, Suria Darma
JOURNAL OF TROPICAL SOILS Vol. 13 No. 1: January 2008
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2008.v13i1.59-65

Abstract

Rainforest conversion into agricultural lands in Nopu Upper Catchment such as cocoa plantations, maizes, cassava, peanuts, and scrub and bush were significantly increase soil erosions and surface runoffs, which in turn will decrease crops productivity and hydrologic functions of watershed.  Soil erosion from maize and peanut rotation plots are higher 2.061,8% than soil erosions from natural forest plots.  Soil erosions are higher also in intercroping young age cocoa, maize and cassava plots and maize plots respectively 2.023,8% and 2.012,3%.   Where as surface runoffs were increase up to 650,9% in medium age cocoa plots, 380,4% in intercroping young age cacao and cassava plots, and 347,1% in scrub and bush plots.  The result of ANSWERS model simulation using daily C factors were indicate that rainforest conversion into agricultural lands in Nopu Upper Catchment causing soil and water loss respectively 3.190,5 ton/year and  115.441 m3/year.   Application of agroforestry systems in agricultural lands which in line with reforestation in stream line area of Nopu river and steepy agricultural lands (slope > 40%) are effectively reduce soil erosions up to 77,6% compare to soil erosion from existing land uses.
Parameter Sensitivity Test of SWAT Hydrological Model On Two Different Resolutions (A Case Study of Upper Cisadane Subbasin, West Java) Alim, Nurmaranti; Tarigan, Suria Darma; Tejo Baskoro, Dwi Putro; Wahjunie, Enni Dwi
JOURNAL OF TROPICAL SOILS Vol. 23 No. 1: January 2018
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2018.v23i1.47-53

Abstract

A sensitivity analysis of SWAT parameters was conducted on different spatial resolutions. The sensitivity analysis aimed to determine the input parameters that have the most impact on the of output of the model. Resolution of different inputs in the SWAT analysis can produce different input parameters that can affect the output. The purpose of this study was to identify the level of sensitivity of the parameters used in the SWAT model simulated on two different resolutions, i.e. 1: 100,000 and 1: 250,000. A sensitivity test was conducted manually using the absolute sensitivity method, i.e. a method to test the sensitivity of the parameters of SWAT model that can change (either increase or decrease) one by one while the other parameters are constant. The results show that the Nash-Sutcliffe Efficiency (NSE) coefficients derived after calibration of the SWAT models on both resolutions of maps indicate similar performance of the models, with the category for the daily simulation of excellent (NSE coefficients of 0.55 and 0.54), while the monthly simulation is categorized as very satisfactory (NSE coefficients of 0.80 and 0.82). The sensitive parameters of the SWAT model identified in the current study include CN2 (initial SCS runoff curve number for moisture condition II), Alpha_BNK (flow recession constant or recession proportional to the banks of the river), CH_K2 (effective hydraulic conductivity in main channel alluvium), CH_N2 (Manning’s “n” value for the main channel), ESCO (soil evaporation compensation factor), GW_Delay (groundwater delay), and GW_Revap (groundwater “revap” coefficient).  
Land Capability Evaluation of Upper Sekampung Watersheds Banuwa, Irwan Sukri; Sinukaban, Naik; Tarigan, Suria Darma; Darusman, Dudung
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.v13i2.145-153

Abstract

Land degradation is a serious problem in the Upper Sekampung Watersheds.  This is because the farmers cultivated in steep land to coffee crops without  in adequate soil and water conservation practices.   The land degradation is mostly caused by erosion.  The erosion problem not only stripping the most fertile top soil and decreasing crop production, but also resulting problems in lowland.  Therefore, the reorientation land management should be improved to produce agriculture sustainability. The first step is to evaluated land capability this area.  The objectives of the research were evaluate land capability of Upper Sekampung Watersheds.  The results showed that the Upper Sekampung Watersheds were dominated with class and subclass land capability of III-l2 about 17.630,51 ha (41,58 %). All of the constrain for each land capability in this area is erosion hazard, especially land slope.  From this research, cultivated land to coffee base crops were allowed in land capability II-l1.e1, III-l2, IV-l3, and VI-l4, with in adequate soil and water conservation practices. In contrary, the land capability of VII-l5 unsuitable for agriculture, they should be a nature or for conservation forest.
Konversi Hutan Menjadi Lahan Usahatani Karet dan Kelapa Sawit serta Pengaruhnya terhadap Aliran Permukaan dan Erosi Tanah di DAS Batang Pelepat Sunarti, .; Sinukaban, Naik; Sanim, Bunasor; Tarigan, Suria Darma
JOURNAL OF TROPICAL SOILS Vol. 13 No. 3: September 2008
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2008.v13i3.253-260

Abstract

Forest conversion to some land use happened in all watershed, includes Batang Pelepat watershed. The objectives of this research are to know effect of forest conversion to land of rubber (Hevea brasiliensis) and palm oil (Elaeis guinensis Jack) farming on run off and soil erosion and different of erosion rate on agro technology of rubber and palm oil farming in Batang Pelepat watershed. The research was carried out during 3 months, begin October to December 2006. Run off and soil erosion measured plot with gutter in the lower of plot. Experimental design for this research is randomized complete block design, with land use type as treatment and slope class as replication or block. Data analyzed statistically by variance analysis (F-test) and Duncan New Multiple Range Test on confidence 95% (α = 0.05). The results of this research show that area of forest coverage in Batang Pelepat watershed was decreasing. In 1986 this area still 94,50% of watershed area, but in 1994 area of forest only 78,17% and in 2006 forest area 64,20% of watershed area. Forest conversion was carried out to land of rubber and palm oil farming with some actual agro technologies. Land of monoculture rubber I resulted the highest run off and soil erosion more than the other land use type and showed different of run off and soil erosion on land of secondary forest. 
Methods for Delineating Degraded Land at Citarum Watershed, West Java, Indonesia Tarigan, Suria Darma
JOURNAL OF TROPICAL SOILS Vol. 17 No. 3: September 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i3.267-274

Abstract

Accurate information on the extent and spatial location of degraded lands is very important to plan their rehabilitation. So far, various institutions issue different estimation on the extent of degraded land in Indonesia led to big confusion for rehabilitation planning.  Ministry of Forestry estimates around 30.2 million ha of degraded land both inside and outside forestry area throughout Indonesia based on data released in 2007. Ministry of Forestry implementes the so called scoring method in delineating degraded land. Criteria used in the scoring methods are: land cover, slope steepness, erosion, and management. Scoring method applies different weight to each of those criteria. This study aimed to analyze accuracy of scoring method and to compare it to propose alternative methods in delineating degraded land such as: a) Inconsistency of land use, and b) Combination of Inconsistency of land use and scoring method. The accuracy of these methods were obtained by comparing to the field observation. The slope map was derived from SRTM 30 m, soil map was obtained from Soil Research Institute and land cover/land use from Ministry for Environment.  Using GIS analysis, those maps were used to compose land capability classification (LCC) and inconsistency of land use. The study showed that scoring method had 66% accuracy in delineating degraded land. When scoring method was combined with Inconsistency method the accuracy increased about 7%.Keywords: Degraded land; inconsistency of land use; land capability class; scoring method[How to Cite: Tarigan SD. 2012. Methods for Delineating Degraded Land at Citarum Watershed, West Java, Indonesia. J Trop Soils, 17 (3): 267-274. doi: 10.5400/jts.2012.17.3.267][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.267]
Impact of Land Use Change and Land Management on Irrigation Water Supply in Northern Java Coast Tarigan, Suria Darma; Tukayo, Rudolf Kristian
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.
Identification and Evaluation of Potential Land Resources to Support the Development of Agricultural Commodities for Food Crops Zone Prasetya, Nurdiyanto Agung; Hikmatullah, .; Asisah, .; Saleh, Muhamad Buce; Tarigan, Suria Darma
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.v19i1.53-61

Abstract

To support the goverment purpose to reach the food security, a land use study is needed. The aim of the research was  to provide  an  information  of  characteristics of  land  resources through the identification  and evaluation  of potential landresources and that suitable for food crops in Mamuju District South Sulawesi. The research method used landscape approach to mapping land units as the basis for preparing the soil map unit/DEM compared with field data survey. A case study was done in Mamuju District, West Sulawesi the results showed that the land in Mamuju for paddy covering was suitable enough of 115,250 ha and 54,883 ha of marginal fit, while for dryland crops were 106 978 ha was quite suitable and appropriate marginal was 82,592 ha. However, for cocoa fit enough land was 153,397 ha and corresponding marginal was 485,743 ha. Biophysical constraints were the erosion of land use/steep slopes, drainage, seasonal flooding, toxicity and nutrient retention. Direction of land use for agriculture in Mamuju for Rice crop area was 49,345 ha (6.23%), food crops rice and dry land was 10,680 ha (1.35%), dryland crops/crops was 101,785 ha (12.85%), perennial/Cocoa was 90,488 ha  (11.42%), and conservation land was 532,245 ha (67.18%).Keywords : Cland crops, land identification, soil evaluation [How to Cite: Nurdiyanto AP, Hikmatullah, Asisah, MB Saleh, and SD Tarigan. 2014. Identification and Evaluation of Potential Land Resources to Support the Development of Agricultural Commodities for Food Crops Zone. J Trop Soils 19: 53-61. Doi: 10.5400/jts.2014.19.1.53]   
Land Use Change, Hydrological Responses and Water Balance of Upstream Ciujung Watershed Meilasari, Nabilla; Hidayat, Yayat; Tarigan, Suria Darma
Jurnal Ilmu Pertanian Indonesia Vol. 31 No. 1 (2026): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.31.1.57

Abstract

Ciujung Watershed is an important land located in Banten Province, Indonesia. The Upstream Ciujung Watershed has seen numerous changes in land usage. Before implementing the best watershed management practices, we must first gather knowledge about the watershed's features. This report seeks to provide information about the characteristics of the Upstream Ciujung Watershed, covering land-use changes, hydrological responses, and water balance. Land use changes were analyzed using satellite imagery from 2016 and 2021, with changes traced using ArcGIS and Excel; hydrological response method for flow regime coefficient (FRC) and annual flow coefficient (AFC) in the 2012−2016 and 2017−2021 periods. Water balance was analyzed by calculating water demand in 2021 and availability water from 2012−2021. The study found that deforestation occurred between 2016 and 2021. Primary forest, secondary forest, and production forest area fell by 51 ha, 1,073 ha, and 3,119 ha, respectively, while dryland agricultural area increased with a mix of shrubs, plantations, and settlements, contributing to the alteration in the watershed. The FRC and AFC values from 2012 to 2016 were 49 (poor) and 0.32 (moderate). Meanwhile, the FRC and AFC for 2017–2021 were 60 (moderate) and 0.30 (moderate). The water balance of the Upstream Ciujung Watershed in 2021 indicates a water surplus of 663,739,545 m3/year, while the dry season in September shows a shortfall of −5,468,643 m3/month. Keywords: annual flow coefficient, flow regime coefficient, hydrological function, watershed management
Analysis of the Pollution Load Capacity of Batang Merao Watershed in Jambi Province : Analysis of the Pollution Load Capacity of Batang Merao Watershed in Jambi Province Patri, Syiskhaeka; Santikayasa, I Putu; Tarigan, Suria Darma
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 14 No 3 (2024): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.14.3.641

Abstract

Daerah Aliran Sungai (DAS) Batang Merao mengalami penurunan kualitas air akibat aktivitas manusia yang memanfaatkan dan membuang limbah. Jika dibiarkan akan menyebabkan pencemaran sungai yang terus meningkat, sehingga perlu dilakukan analisis untuk mengetahui Daya Tampung Beban Pencemaran (DTBP) DAS Batang Merao sebagai langkah antisipasi pencemaran. Penelitian ini bertujuan untuk menghitung DTBP DAS Batang Merao, serta kapasitas beban pencemaran saat ini dan lima tahun mendatang menggunakan model kualitas air QUAL2Kw berdasarkan Peraturan Menteri Lingkungan Hidup nomor 01 Tahun 2010 . Hasil kalibrasi model menggunakan Nash Sutcliffe Efficiency (NSE) untuk parameter TSS, BOD dan COD adalah 0.766, 0.574, dan 0.633 yang berarti pemodelan kualitas air dapat digunakan untuk memprediksi beban pencemaran sungai. Hasil pemodelan menunjukkan untuk DAS Batang Merao memiliki DTBP parameter TSS, BOD dan COD sebesar 95,057 Kg/hari, 5,739 Kg/hari dan 46,774 Kg/hari, sedangkan beban pencemaran kondisi saat ini sebesar 147,962 Kg/hari, 10,086 Kg/hari dan 60,369 Kg/hari. Pada estimasi kondisi lima tahun mendatang yaitu tahun 2028 beban pencemaran parameter TSS, BOD dan COD sebesar 163,023 Kg/hari, 11,432 Kg/hari dan 69,211 Kg/hari.
Co-Authors . Asisah . HIKMATULLAH . Hikmatullah Afri Fajar Agus Setiyono Agus Wahyudi AH. Maftuh Hafidh Zuhdi Ai Dariah Alim, Nurmaranti Andria Harfani Qalbi Aries Suharso Ario Damar Asisah, . Asyhari, Adibtya Atang Sutandi Austin Ullyta Baba Barus Bambang Dwi Dasanto Bambang Hendro Trisasongko Bandung Sahari Bejo Slamet Boedi Tjahjono Budi Kartiwa Budi Kuncahyo Budi Nugroho Bunasor Sanim Cahyo Wibowo Darda Effendi Dede Sulaeman Dede Sulaeman, Dede Desi Nadalia Despry Nur Annisa Ahmad, Despry Nur Annisa Dodik Ridho Nurrochmat Dudung Darusman Dwi P T Baskoro Dwi Putro Tejo Baskoro Dyah Retno Panuju Enni Dwi Wahjunie Enni Dwi Wahyunie Erizal , ERNA SURYANI Erwin Hermawan Evy Damayanthi Fadhlullah Ramadhani Fajar Nugraha Faqihna Pidin Fata, Yulia Amirul Fatoni, Arif Fitriani Hayati Gangga, Adi Gunadi Firdaus Haki Yusdinar Hari Agung Haris Syahbuddin Harisson, Rhett D. Hasim Hefni Effendi Hendrayanto . Hengky Wijaya Hery Widijanto Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan I Nengah Surati Jaya Idqan Fahmi Iin Ichwandi Imas Sukaesih Sitanggang IPB, DGB Irdika Mansur Irmadi Nahib Irwan Irwan Ishak Yassir ISKANDAR ZULKARNAEN SIREGAR Jamhari Jamhari Jepri, Kristoporus kartika triasary Kerstin Wiegand Kiki Rishki Ananda Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono La Baco S Laksono Trisnantoro Lala M Kolopaking Latief Mahir Rachman Lutfy Abdulah M Agus Setiadi M. Sri Saeni M. Yanuar J. Purwanto Ma'mun Sarma Mahardika, Rabbirl Yarham Mahendra Harjianto Mahendra Harjianto Mariana Lusia Resubun Mariana Lusiana Resubun Marimin , Marisa Dwi Putri Meilasari, Nabilla Muhammad Buce Saleh Muhammad Yanuar J. Purwanto Nahrowi Naik Sinukaban Naik Sinukaban Naik Sinukaban Naik Sinukaban Naik Sinukaban Naik Sinukaban Najla Anwar Fuadi Naro Pandapotan Pasaribu Nevky Emiraj Saputra Nicko Widiatmoko Novia Mustikasari Nurdiyanto Agung Prasetya Nurlaila Mubarokah Nurmaranti Alim Oktariza, Wawan Omo Rusdiana Oteng Haridjaja Oteng Haridjaja Oteng Haridjaja Patri, Syiskhaeka Prasetya, Nurdiyanto Agung Pungkas Syahadat Purwanto, Yanuar Jarwadi Purwiyatno Hariyadi Qalbi, Andria Harfani Ravelle, Adzan Pandu Reni Kusumo Tejo Reyna Prachmayandini Reza Hanjaya Rikky Mulyawan Rima Purnamayani Rudolf Kristian Tukayo Saiful Akhyar Lubis Sakti, Harry Hardian Santikayasa, I Putu Santun R.P Sitorus Santun R.P. Sitorus Sarif Robo Selamet Kusdaryanto Silalahi, Mangarah Sri Purwaningsih, Sri Sudradjat Sudradjat Sudradjat Sumiati Sunarti Sunarti Sunarti Sunarti Suprihatin Suprihatin Surya Cipta Ramadhan Kete Suryanto Suryanto Syafrani Syafrani Takeshi Katsumi Tania June Trihono Kadri Tukayo, Rudolf Kristian Ulfah Juniarti Siregar Ulfah Sarach Sheftiana Untung Sudadi Veybi Djoharam Vinni Lovita Widiatmaka Widiatmaka Widiatmaka Widya Ulfah Utami Wiwin Ambarwulam Yandra Arkeman Yayat Hidayat Yudha Kristanto Yulia Amirul Fata Yunita Lisnawati Yuri Ardhya Stanny Yusdinar, Haki Yustika, Rahmah Dewi Yusuf, Sri Malahayati