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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal AGROTEKNOLOGI Journal of Tropical Soils Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Widyariset Jurnal Wilayah dan Lingkungan Jurnal Tataloka JURNAL ILMIAH GEOMATIKA MAJALAH ILMIAH GLOBE SAINS TANAH - Journal of Soil Science and Agroclimatology Informatika Pertanian Jurnal Tanah dan Iklim Widyariset Science and Environmental Journals for Postgraduate Makara Journal of Science

Untung Sudadi

Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian IPB, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680

Author-ID : 507504

Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Physics Social Sciences

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The contribution of organic acid on heterotrophic CO2 flux from tropical peat: a trenching study Siti Nurzakiah; Atang Sutandi; Gunawan Djajakirana; Untung Sudadi; Supiandi Sabiham
Journal of Degraded and Mining Lands Management Vol 9, No 1 (2021)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2021.091.3035

Quantification of CO2 flux from peat has been studied with various methods of measurement and data analysis. Several studies have applied regression analysis to assess carbon flux from tropical peatland as a function of groundwater level. Such an analysis simplified the complex nature of peat decomposition, which involved microbial activities. The study was conducted at Buatan Village, Siak Indrapura Regency, Riau Province, Indonesia. Soil sampling was done every month for a year observation, from July 2018 to June 2019. This study aimed to comprehend CO2 production from the respiration of heterotrophic components (Rh-CO2) as a function of soil properties determined by soil pH, N-NH4, N-NO3, available P, exchangeable-K, C-organic acids, and environmental factors that are determined by soil water content, and groundwater level. The study applied trenching experimentation to quantify Rh-CO2 flux by first removing plant roots from the trenching plot. The CO2 flux and groundwater level were measured for five consecutive days each month for a one-year period. Multiple regression analysis was performed to determine the main determinant for the Rh-CO2 flux. The results showed that seasonal fluctuation of Rh-CO2 flux, negatively correlated with available P (p = 0.037), and positively (p = 0.018) with C-substrate as C-organic acids but not with either of the speciated ones as acetic, lactic, citric, malic, nor oxalic acids. More specifically, the C-organic acids were found as the main determinant factor (p = 0.039) affecting the Rh-CO2 flux.

PRODUKSI BIODIESEL DARI BIOMASSA Chlamydomonas sp. ICBB 9113 DIKULTIVASI MENGGUNAKAN MEDIA YANG MURAH: EFEKTIFITAS DARI BEBERAPA METODE EKSTRAKSI Patmawati Patmawati; Bustami Ibrahim; Iriani Setyaningsih; Untung Sudadi
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

The main challenges to overcome in biodiesel production from microalgae are lower oil yield, as compared to those derived from plant and animal biomass, and expensive culture media. This work was aimed to compare the effectivity of three extraction methods differed in solvent used, e.g. n-hexane (N-hex), ethanol (Eth), and mixture of chloroform-methanol-water (CMW), to extract crude lipid and biodiesel from dry biomass of Chlamydomonas sp. ICBB 9113. This microalgae was cultivated in a cheap culture media using N and P soil fertilizers as nutrient sources. The results showed that, by using N-hex, Eth, and CMW methods, it could be extracted, respectively, 0.06%, 4.51%, and 20.45% crude lipid, and 384.2, 1333.8, and 2430.6 mg/100g biodiesel. The fatty acid profile of the studied microalgae biomass was: C8:0 (0.11%), C10:0 (0.09%), C14:0 (7.70%), 16:0 (1.39%), C18:0 (0.85%), C14:1 (5.12%), C16:1 (7.09%), C18:1 (8.28%), C18:2 (12.80%), and C18:3 (42.57%). Fatty acid characterization showed that Chlamydomonas sp. ICBB 9113 was dominated by C18: 3 and C16:0. Therefore, these microlagae were suitable to be used as raw material for biodiesel production to substitute the conventional fuel.

Kajian Pengembangan Lahan Pertanian Tanaman Pangan Berbasis Komoditas Unggulan di Kabupaten Pinrang, Sulawesi Selatan Suryani Suryani; Santun R. P. Sitorus; Untung Sudadi
Jurnal Wilayah dan Lingkungan Vol 8, No 2 (2020): August 2020
Publisher : Department of Urban and Regional Planning, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jwl.8.2.147-160

Agriculture sector performs prominent role in the economy of Pinrang Regency. As the national food-estate area of South Sulawesi Province, RGDP agriculture sector of the regency increased from 4.72 to 7.94 trillion IDR in 2013-2017. This study aims to analyze food-crop agriculture land development based on primary commodities in Pinrang Regency, South Sulawesi. This study was conducted in twelve sub-districts in the regency’s area from September 2018 to June 2019. Application of geospatial technology was expected to present new approach with more accurate and easily updated land development planning in the area. The research data consisted of primary field survey data and secondary data of spatial pattern map of RTRW 2012-2032 from Bappeda and food-crop harvested area and production from BPS Pinrang Regency, characteristics and existing land use map from BBPPSDLP, and forest and water conservation area map from KLHK. Primary commodities was detemined based on Location Quotient and Shift Share Analysis. Potential land arrangement was referred to FAO Land Suitability Evaluation. Land development plan was formulated using selection and screening procedure based on Boolean logic. Five primary commodities was determined with 5,871 Ha potential land suitable for their development out of 7,324 Ha available land that consisted of land uses planned for paddy (3,529 Ha), cassava (1,398 Ha), corn (657 Ha), soybean (187 Ha), and sweet potato (100 Ha). The land development plan for these commodities was categorized into the first (147 Ha) and second (5,724 Ha) priority.

PENGEMBANGAN KAWASAN BUDIDAYA JAGUNG UNTUK PENINGKATAN PEREKONOMIAN KABUPATEN PEMALANG Eko Fitriono Harimurti; Khursatul Munibah; Untung Sudadi
TATALOKA Vol 20, No 3 (2018): Volume 20 Number 3, August 2018
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/tataloka.20.3.215-232

Pemalang Regency had low economic rate, based on agriculture sector especially food crop sub-sector with Paddy and Maize as main contributor, had a high paddy fields conversion wich decreased the economic rate through Paddy production decreasement. The main objective of this research were to compose the Maize cultivation area development planning for Pemalang Regency economy improvement. The method used in this research were: mapping the Maize cultivation existing area, land suitability and availability evaluation, analysis of economic, marketing and correlation between Maize production with GDP growth and employment absorption. The results showed that there were about 1,804 ha of exsisting Maize cultivation area and 4,276 ha marginally suitable (S3) potential land. The Maize development were be feasible to be continued. Best benifit obtained from the channel that composed by Farmer-Depot-Industry, it gave lowest margin and highest farmer's share. The Maize market in integrated condition. Allocation potential land and 285.66 ha of Perhutani’s area predicted gave 5.94% of agriculture sector increasement and absorb all unemployment in Pemalang Regency.

ANALISIS SPASIAL DINAMIKA KONVERSI LAHAN DI KABUPATEN GOWA, SULAWESI SELATAN M Munawir; Baba Barus; Untung Sudadi
TATALOKA Vol 21, No 2 (2019): Volume 21 No. 2, May 2019
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/tataloka.21.2.237-252

Intensitas pembangunan di Kota Makassar serta integrasi wilayah ke dalam KSN Mamminasata menyebabkan terjadinya proses transformasi fisik-spasial dan berakibat terhadap tingginya konversi lahan di Kabupaten Gowa. Penelitian ini bertujuan untuk (1) Menganalisis konversi lahan, dan faktor penentunya di Kabupaten Gowa dalam lima titik tahun (1998, 2003, 2007, 2011 dan 2016), serta (2) Menganalisis dinamika konversi penggunaan lahan tersebut. Analisis yang digunakan meliputi (1) analisis penggunaan lahan dan analisis konversi lahan, (2) analisis faktor penentu konversi lahan, dan (3) analisis dinamika konversi lahan. Hasil penelitian menunjukkan bahwa total konversi penggunaan lahan di Kabupaten Gowa selama periode tahun 1998-2016 sebesar 3.23%. Penggunaan lahan yang mengalami peningkatan luasan paling tinggi yaitu lahan terbangun, sedangkan yang mengalami penurunan luasan paling tinggi yaitu sawah, dan ladang/tegalan. Faktor penentu yang signifikan mempengaruhi konversi penggunaan lahan sawah menjadi lahan terbangun meliputi kepadatan penduduk, jarak dari ibukota kabupaten, jarak dari ibukota kecamatan, jarak dari pasar, kebijakan pola ruang Kabupaten Gowa, dan Integrasi ke dalam KSN Mamminasata, sedangkan konversi ladang/tegalan menjadi lahan terbangun dipengaruhi faktor penentu kemiringan lereng, kepadatan penduduk, jarak dari jalan arteri, jarak dari kota kabupaten, jarak dari objek wisata, kebijakan pola ruang Kabupaten Gowa, dan Integrasi ke dalam KSN Mamminasata. Penggunaan lahan yang paling dinamis berkembang yaitu lahan terbangun dan semak belukar, sementara penggunaan lahan yang paling dinamis menurun meliputi sawah, ladang/tegalan, dan hutan. Intensitas konversi yang tertinggi yaitu pada transformasi penggunaan lahan sawah, ladang/tegalan, semak belukar menjadi lahan terbangun. Tingkat intensitas konversi lahan yang berlangsung cepat terjadi pada periode tahun 2007-2011, dan 2011-2016.

MODEL PERUBAHAN DAN ARAHAN PENGGUNAAN LAHAN UNTUK MENDUKUNG KETERSEDIAAN BERAS DI KABUPATEN BREBES DAN KABUPATEN CILACAP Andreas Ari Putro Dwinanto; Khursatul Munibah; Untung Sudadi
TATALOKA Vol 18, No 3 (2016): Volume 18 Number 3, August 2016
Publisher : Diponegoro University

The increasing of paddy field change has threatened the fulfillment of rice needs. The objective of this research is to analyze the spatial pattern of land use change, to predict land use change in 2030, to arrange rice availability balance sheet in 2030 and to arrange land use direction to support rice availability in Brebes and Cilacap Regencies. The rate of paddy field change started from 2005 till 2015 in Brebes regency higher than the rate of change in Cilacap. Land use change model is built using cellular automata (CA) approach. The prediction in 2030 have shown settlements will be growing while the paddy field will have more high pressure. The prediction of paddy field in both of Regency. The calculation in 2030 shows that either Brebes regency or Cilacap regency has already surplus with the amount of rice surplus from year to year constantly will decrease. To maintain the rice availability, paddy field is directed to be protected. Shrub and mix crop are directed to be paddy field to increase rice production

Inaktivasi In Situ Pencemaran Kadmium pada Tanah Pertanian Menggunakan Amelioran dan Pupuk pada Dosis Rasional untuk Budidaya Tanaman Untung Sudadi; Supiandi Sabiham; Atang Sutandi; Muchammad Sri Saeni
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.v13i3.171-178

Arable soils located in the vicinity of urban and industrial area are considered vulnerable to heavy metals pollution. Chemical inactivation, an in situ remediation method that used inexpensive chemicals to reduce pollutant solubility in polluted soil, was examined on a Cd-spiked arable soil. The study was aimed at to investigate the effectiveness of ameliorants and fertilizers normally recommended for crop cultivation, using tomato as the test plant, from the point of view to reduce soil Cd extractability and plant Cd concentration. A 100-day greenhouse experiment in completely randomized design consisting of three rates of rationale dosage of ameliorants and fertilizers (RDAF) [0, 50, 100%] and four levels of soil Cd spike [0, 10, 20, 40 mg Cd kg-1 soil, using 3CdSO4.8H2O] in triplicate was conducted. The 100% rate of RDAF applied was: 4 ton dolomite ha-1, 30 ton cow dung ha-1, 150 kg N ha-1 (½ Urea + ½ Ammonium Sulfate), 150 kg P2O5 ha-1 (SP-36) and 100 kg K2O ha-1 (KCl). Significant reductions in soil extractable Cd (CdNH4OAc-EDTA) [from 13.35 to 8.77 mg kg-1, 34%] and plant shoots-Cd (Cdps) [from 8.66 to 5.46 μg g-1, 37%] were measured at 100% RDAF treatment as compared to the control soil, indicating the occurrence of an in situ soil Cd inactivation and plant element selective-uptake phenomenon. Multiple regression analysis that incorporating all 36 data pairs resulted in the following equations: (1) soil CdNH4OAc-EDTA = – 0.18 pHH2O + 0.21 PBray#1 + 0.51 organic-C – 0.57 exch.-Mg + 0.65 Cdaqua regia (R2 = 0.76), and (2) Cdps = 0.08 Nps – 0.17 Kps – 0.19 Mgps – 0.24 Pps + 0.27 Sps – 0.41 Caps (R2 = 0.54, 3 outliers removed). These results suggest that a proper amelioration and fertilization program may be prospective to be recommended as a low-cost Cd pollution remediation strategy for arable soils

INDONESIAN NANOCLAYS FOR THE REMOVAL OF NITRATE IN LIQUID WASTE CONTAINING PALM OIL MILL EFFLUENT Untung Sudadi; Syaiful Anwar; Rendy Anggriawan; Tengku Afrizal
JURNAL AGROTEKNOLOGI Vol 13 No 02 (2019)
Publisher : Faculty of Agricultural Technology, University of Jember

Land application of liquid waste containing palm oil mill effluent (LW-POME) as soil ameliorant can cause water contamination due to its high content of nitrate if improperly treated. Indonesia is rich with volcanic tuff materials that contain variable charged soil clay minerals. This study was aimed at to extract nanoclays (fraction sized <200 nm) from volcanic tuffs of Mt. Salak, West Java, Indonesia, and evaluate their potential use as adsorbent of nitrate in LW-POME. By applying dispersion, ultrasonication, centrifugation, and dialysis separation techniques, it could be extracted positively charged nanoclays nc3 and nc4 from the respectively tuff materials tv3 and tv4. Their potential use as natural adsorbent of nitrate as anionic contaminant was evaluated using Langmuir isothermal adsorption model. After 48 h equilibration, it could be extracted 4.33 mg nc3/g tv3 and 7.73 mg nc4/g tv4 with nitrate adsorption maxima of 48.3 and 40 mg/g for nc3 and nc4, respectively. The removal of nitrate in the LW-POME from 62 to 20 mg/L as to comply with the Indonesian liquid waste quality standard required 29.81 mg nc3/L or 39.34 mg nc4/L. The extracted nanoclays were considered prospective to be utilized as natural adsorbent for nitrate removal in LW-POME. Keywords: anionic contaminant, natural adsorbent, nitrate adsorption, volcanic tuff

ANALISIS KESESUAIAN LAHAN UNTUK KOMODITAS SAYURAN UNGGULAN DI KABUPATEN BATANG Saksono Raharjo; - Widiatmaka; Untung Sudadi
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 5 No. 1 (2015): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.5.1.33

Batang Regency has potential land resource for the development of vegetable commodity because it has a diverse agro-ecological conditions, ranging from coastal areas, plains and mountains. However, these conditions have not been matched with adequate vegetable productivity because it is still below the average productivity of Central Java province. The purpose of this study were to know the primary commodities of vegetable in Batang, to know the land availability for development of primary vegetable commodities and to know available of land suitability for development of primary vegetable commodities in Batang. The analytical method used in this study were : LQ and SSA, land availability analysis and land suitability analysis.The results showed that the primary vegetables in Batang are potato, carrot, long bean, large pepper, cucumber, cayenne pepper, eggplant, cabbage and mustard. Available land for development planning based on primary vegetable horticulture area are 28.558 hectares.The results of soil analysis showed that the potential suitability classes for potatoes, cucumbers and carrots have potential level suitability of S2 and S3. Long bean,chili large, cayenne pepper, eggplant, cabbage and mustard have a potential level suitability of S1 (highly suitable) although that area were not too large. Keywords: primary commodity, land availability, land suitability

PERENCANAAN PENGEMBANGAN KAWASAN JAGUNG SEBAGAI BAHAN BAKU INDUSTRI PAKAN DI KABUPATEN CIAMIS Mustika Gusnia Sari; Khursatul Munibah; Untung Sudadi
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 5 No. 1 (2015): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.5.1.42

Poultry development sector in Ciamis has effected an increasing in maize production as a raw material for feed. In period 2008-2012, the production of maize in Ciamis Region is 45.883 tons, meanwhile, the demand is 17.000 tons, consequently the Ciamis District supposed to be able to fulfill the demand; however, but currently the feed industry in Ciamis are still importing the maize. Cluster development might be one of solution for this problem. The aims of this research are: (1) Analyzing land availability for maize development in Ciamis District, (2) Analyzing maize cluster type can be developed in Ciamis District, 3) Analyzing strategies in development of maize cluster. The results showed that land availability for maize development in Ciamis Regency is 28.176 ha. There are three maize cluster types that can be developed in Ciamis as follows: pertumbuhan cluster (15.671 ha), pengembangan cluster (12.217 ha) and pemantapan cluster (288 ha). Considering the region development strategy, the priority in pertumbuhan cluster type is an optimization of natural resources (land factor), in development type is human resources development with focused to the education and training of field staff, and in the pemantapan type is an institution empowerment with focused on the partnerships. Keywords: maize, cluster, development

Co-Authors Achmad Azhari Sidik Agus Kurniawan Ahmad Imtaz Sumbari Andreas Ari Putro Dwinanto Anggria, Linca Anggriawan, Rendy Ardilles Akbar Atang Sutandi Baba Barus Bandung Sahari Bargowo Addianto Boedi Tjahjono Budi Mulyanto Budi Nugroho Budi Nugroho Budi Nugroho Bustami Ibrahim Deno Okalia, Deno DWI ANDREAS SANTOSA Dyah Retno Panuju Eka Sari Eko Fitriono Harimurti Fahmi Arief Rahman Fahmuddin Agus Faridlotul Hasanah Gian Juliano Giyanto Giyanto Gunawan Djajakirana Hartono, Arif Iriani Setyaningsih ISKANDAR Iskandar Iskandar Khairul Anam Khoirunnisa, Nur Syafira Khursatul Munibah Komarsa Gandasasmita Komarsa Gandasasmita Kusuma Handayani Laode Muhamad Asdiq Hamsin Ramadhan Lia Ambasari, Lia Lia Meyana M Munawir MANALU, TUGMA JAYA Muchammad Sri Saeni Muhammad Anggi Imaduddin Muhammad Ardiansyah Mustika Gusnia Sari NISA RACHMANIA MUBARIK Patmawati Patmawati Purnamasari, Laili Putri, Elsa Kumala Qalbi, Andria Harfani Ramadhan, Risky Rendy Anggriawan Romiyanto Romiyanto Saeni, Muchammad Sri Saksono Raharjo Santun R.P. Sitorus SETIARI MARWANTO Siti Nurzakiah Siti Nurzakiah Supiandi Sabiham Suria Darma Tarigan Suryani Suryani Suwardi Suwardi Syaiful Anwar Tengku Afrizal Widiatmaka Yustian Yustian Yustika, Rahmah Dewi

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