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All Journal Indonesian Journal of Geography Jurnal Ilmu Lingkungan Agrikultura Teknotan: Jurnal Industri Teknologi Pertanian Jurnal AGROTEKNOLOGI JURNAL TEKNOLOGI LINGKUNGAN Jurnal Keteknikan Pertanian Cropsaver : Journal of Plant Protection Indonesian Journal of Forestry Research SITEKIN: Jurnal Sains, Teknologi dan Industri Journal of Degraded and Mining Lands Management Jurnal Keteknikan Pertanian Tropis dan Biosistem Arena Hukum Prosiding Semnastek Register: Jurnal Ilmiah Teknologi Sistem Informasi Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JURNAL SUMBER DAYA AIR ZIRAA'AH MAJALAH ILMIAH PERTANIAN Proceedings Series on Physical & Formal Sciences Jurnal Ilmu Kehutanan Jurnal Indonesia Sosial Sains PROSIDING SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT (SNPPM) UNIVERSITAS MUHAMMADIYAH METRO Jurnal Manusia dan Lingkungan Indonesian Journal of Forestry Research
Chay Asdak
Jurusan Teknik Pertanian, Fakultas Teknologi Industri Pertanian, Universitas Padjadjaran
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Public Health Social Sciences Other

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Spatial dynamics model of land use and land cover changes: A comparison of CA, ANN, and ANN-CA Dede, Moh.; Asdak, Chay; Setiawan, Iwan
Register: Jurnal Ilmiah Teknologi Sistem Informasi Vol 8 No 1 (2022): January
Publisher : Information Systems - Universitas Pesantren Tinggi Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26594/register.v8i1.2339

Abstract

Land use and land cover (LULC) changes through built-up area expansion always increases linearly with land demand as a consequence of population growth and urbanization. Cirebon City is a center for Ciayumajakuning Region that continues to grow and exceeds its administrative boundaries. This phenomenon has led to peri-urban regions which show urban and rural interactions. This study aims to analyze (1) the dynamics of LULC changes using cellular automata (CA), artificial neural network (ANN), and ANN-CA; (2) the influential factors (drivers); and (3) change probability in the period 2030 and 2045 for Cirebon’s peri-urban. We used logistic regression as quantitative approach to analyze the interaction of drivers and LULC changes. The LULC data derived from Landsat series satellite imagery in 1999-2009 and 2009-2019, validation of dynamic spatial model refers to 100 LULC samples. This research shows that LULC changes are dominated by built-up area expansion which causes plantations and agricultural land to decrease. The drivers have a simultaneous effect on LULC changes with r-square of 0.43, where land slope, distance from existing built-up area, distance from CBD, and accessibility are significant triggers. LULC simulation of CA algorithm is the best model than ANN and ANN-CA based on overall accuracy and overall accuracy (0.96, 0.75, 0.73 and 0.95, 0.66, 0.66 respectively), it reveals urban sprawl through the ribbon and compact development. The average probability of built-up area expansion is 0.18 (2030) and 0.19 (2045). If there is no intervention in spatial planning, this phenomenon will decrease productive agricultural lands in Cirebon's peri-urban.
Identification of Invasive Aliens Plant Species in Cultivated Area of Kamojang Crater at Ibun District, Bandung Regency, West Java Rasiska, Siska; Asdak, Chay; Parikesit, Parikesit; Sudarjat, Sudarjat; Gunawan, Budhi; Setiawan, Iwan; Setiawan, Ditriz
CROPSAVER Vol 6, No 1 (2023)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v6i1.45383

Abstract

The Cultivated Area in Kamojang Crater, Ibun District, Bandung Regency is part of a single landscape mountain, adjacent to conservated and protected areas which has high biodiversity. This study aims to identify invasive alien plants species in cultivated areas, adjacent to conservation and protected areas. The method used is a descriptive qualitative study with the sampling line transect in 500 meter radius of four location, namely near Nature Reserves (NR), near Nature Tourism Parks (NTP), agriculture (A) and near Protected Forests (PF), and this study has done up at July until November, 2022. The results showed that in the cultivated area in Kamojang Crater, Ibun District, Bandung Regency found 41 families and 96 species of understorey, with the highest number being from the Asteraceae, Poaceae and Fabaceae. Diversity of understorey was categorized as high (H'=3.428), evenly distributed (E=0.738), high species richness (R=13.503) and no dominant species (C=0.165). Several understorey, namely 8 orders, 10 families, and 29 species were categorized as invasive aliens plant species, with the highest important values index being Ageratina riparia (99,642%), Imperata cylindrica (72,919%), Paspalum notatum (31,155%), Chromolaena odonata (31,074%), Etlingera elatior (27,905%), Ageratum conyzoides (20,179%), Lantana camara (19,029%), Amaranthus hybridus (18,818%), Pennisetum purpureum (15,120%), Mimosa pudica (15,031%), Crassocephalum crepidioides (14,037%), and Axonopus compresus (10,671%).
Determination of Sustainable Factory Locations for the Lemon Agroindustry using AHP, Mapping and Water Management Asdak, Chay; Octoyne, Aisyah; Kendarto, Dwi Rustan; Prawiranegara, Boy Macklin Pareira
Jurnal Keteknikan Pertanian Vol. 12 No. 2 (2024): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.2.272-283

Abstract

This research was conducted in Suntenjaya Village, Lembang, West Bandung Regency, focusing on lemon agro-industry development through the Analytical Hierarchy Process (AHP) method approach, area mapping, and water management to determine a sustainable factory location. The main objective is the selection of factory site by integrating lemon production considering sustainable agriculture aspects, product aspects, and water conservation programs. The results of the study provide a strong foundation for sustainable agro-industrial development will support sustainable agriculture, local economy, and environmental protection. The research also combined qualitative and quantitative elements with a mixed approach that included Focus Group Discussion (FGD) and AHP with the results showing that integrated drainage management was the top priority, followed by sanitation, clean water, reforestation, and sustainable agriculture. Mapping of areas based on geographical characteristics such as rainfall, slope, and soil type provided a map of water infiltration rates that became a key guide in planning water conservation programs. This research has positive implications in supporting sustainable agricultural practices and local economic empowerment. The results of the AHP analysis and area mapping form a strong framework for the development of a sustainable lemon agro-industry with positive economic and environmental impacts.
The Implementation of Micro/Nanobubbles (MNBs) Technology to Treat Basin Water as The Primary Water Source for Hydroponics in Greenhouse Yusuf, Asep; Asdak, Chay; Muhaemin, Mimin; N.P, Sophia Dwiratna; Sugiarto, Anto Tri; Alam, Hilman Syaeful
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.197-204

Abstract

The greenhouse plays a pivotal role in creating an ideal environment for hydroponic cultivation. The greenhouse has utilized rainwater and basin water as a source of raw water for hydroponic farming. Presently, the water quality of Leuwi Padjadjaran basin fails to meet the standards required for hydroponics due to its turbidity, sediment content, discoloration, pH levels exceeding 7, and low dissolved oxygen (DO) concentration of 2.2 mg/l. The micro/nanobubbles (MNBs) technology stands as a viable method for water treatment owing to its capacity to bind impurities via radical OH. The application of MNBs for the treatment of basin water involves the use of a hydrodynamic cavitation MNBs generator with a dual-chamber rotating flow nozzle. The parameters evaluated in this research encompass DO concentration, MNBs stability, microbubble size, and the visual response to MNBs application. MNBs treatment was conducted with three different gases: air, oxygen, and ozone. Microbubbles were measured using the particle image velocimetry (PIV) method. The DO concentration reaches 21.6 mg/l when employing oxygen-based MNBs. On the third day post-generation, MNBs stability still maintains DO concentrations above the initial levels. Thus it can be used as hydroponic raw water.  Keywords:  DO concentration, Greenhouse, Micro/nanobubbles, Water treatment.
The Application of Nanobubble Technology in Hydroponic SWU-01 to Increase Dissolved Oxygen Concentration and Lettuce Plant Growth Yusuf, Asep; Asdak, Chay; Muhaemin, Mimin; Fuadah, Eza Zahrotul; Dwiratna, Sophia; Nanda, Muhammad Achirul; Sugiarto, Anto Tri; Alam, Hilman Syaeful
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1395-1402

Abstract

Hydroponic model SWU-01 is a new hydroponic system innovation that regulates watering automatically and independently by utilizing gravity and Archimedes' law. Dissolved oxygen concentration in SWU-01 is only around 3-4.2 mg/L. DO values can be increased by applying nanobubble technology. Ultrafine bubble or nanobubble is a gas bubble in a liquid that has a diameter of <200 nm. The purpose of this study was to determine the effect of nanobubble on dissolved oxygen concentration and growth of lettuce plants cultivated with SWU-01 hydroponics. The experiment used a one-factor randomized complete block design, namely intermittent administration of nanobubble for 15 min every 3 day (P1) and 7 days (P2), and without nanobubble (P0l). The results obtained based on the ANOVA test at the 5% level with the Least Significant Difference (LSD) follow-up test, namely the parameters of fresh weight and number of leaves of lettuce P1 significantly different from P0 and P2, and no significant differences were found in root length, canopy width, and plant height. The P1 treatment is more effective in increasing dissolved oxygen concentration, leaf count, and fresh weight of lettuce produced in lettuce cultivation using the SWU-01 hydroponic system. Keywords: Dissolved oxygen, Hydroponics, Lettuce, Nanobubbles, Plant growth.
KAJIAN PEMBUANGAN LIMBAH INDUSTRI BATU ALAM TERHADAP KUALITAS AIR IRIGASI DESA PANONGAN KECAMATAN PALIMANAN KABUPATEN CIREBON Santika, Silvy; Asdak, Chay; Suryadi, Edy
Jurnal Indonesia Sosial Sains Vol. 2 No. 10 (2021): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v2i10.438

Abstract

Sungai merupakan salah satu sumberdaya air yang sangat dibutuhkan bagi makhluk hidup. Fungsi sungai yaitu sumber air minum, sarana transportasi, irigasi, perikanan, dan sebagainya. Sungai dekat kawasan industri batu alam di Kecamatan Palimanan, Cirebon yaitu Sungai Jamblang, berfungsi sebagai sumber air irigasi Desa Panongan. Sungai Jamblang berpotensi tercemar limbah cair batu alam yang berdampak pada kualitas air irigasi Desa Panongan. Penelitian ini bertujuan untuk mengetahui proses pembuangan limbah cair batu alam di sekitar Sungai Jamblang dan dampak limbah cair batu alam terhadap kualitas air irigasi Desa Panongan. Metode dalam penelitian ini yaitu metode deskriptif dan metode Storet. Parameter uji dalam penelitian ini meliputi pH, DHL, TDS, NO3, Cl, B, PO4, dan K dari setiap titik lokasi pengambilan sampel air. Hasil pengujian dilakukan di PT. Sucofindo kemudian dihitung menggunakan metode Storet. Status mutu air Sungai Jamblang di titik 1 yaitu cemar sedang dan air Sungai Jamblang di titik 2 yaitu cemar berat. Status mutu air irigasi Desa Panongan yaitu cemar sedang. Status mutu air yang diperoleh menunjukkan bahwa adanya limbah cair batu alam berdampak pada kualitas air irigasi, namun tidak semua parameter kualitas air irigasi yang melebihi baku mutu air buruk bagi tanaman pertanian di Desa Panongan.
Analisis Kelayakan Finansial Usahatani Kopi Monokultur dan Agroforestri (Studi Kasus Kelompok Tani Bina Bakti, Sub-DAS Cikamiri, Jawa Barat) Ciptaningtyas, Drupadi; Abdurrahman, Muhammad Zhafir; Thoriq, Ahmad; Asdak, Chay
Teknotan: Jurnal Industri Teknologi Pertanian Vol 19, No 3 (2025): TEKNOTAN, Desember 2025
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jt.vol19n3.1

Abstract

Kecamatan Samarang merupakan salah satu daerah penghasil kopi di Kabupaten Garut yang menghadapi ancaman ekologis berupa degradasi lahan akibat konversi hutan menjadi perkebunan kopi, terutama pada usahatani kopi pola monokultur. Pola agroforestri yang mengintegrasikan prinsip konservasi lahan menjadi alternatif yang potensial untuk menyelesaikan permasalahan ini. Penelitian ini bertujuan untuk mengevaluasi kelayakan finansial usahatani kopi pola monokultur dan agroforestri di Kecamatan Samarang berdasarkan kriteria kelayakan investasi yaitu Net Present Value (NPV), net Benefit-Cost Ratio (net B/C), Internal Rate of Return (IRR), dan payback period. Hasil penelitian menunjukkan bahwa kedua pola usahatani tersebut layak secara finansial. Dengan discount factor sebesar 14%, usahatani kopi pola monokultur menghasilkan NPV sebesar Rp28.851.760, net B/C 1,54, dan IRR 23,13%, dengan pengembalian modal pada tahun ke-7. Sementara itu, usahatani kopi pola agroforestri menghasilkan NPV sebesar Rp197.310.592, net B/C 4,54, dan IRR 47,48%, dengan pengembalian modal pada tahun ke-6. Temuan ini mengindikasikan bahwa pola agroforestri tidak hanya lebih menguntungkan secara finansial tetapi juga mendukung keberlanjutan ekosistem, sehingga diharapkan dapat menjadi pendekatan alternatif bagi petani dalam mengelola usahatani kopi di Kecamatan Samarang.
Estimasi Sebaran Genangan Banjir Menggunakan Model Hidrologi - Hidrolika di Sub DAS Cikamiri Situmorang, Yogina Lestari Ayu; Amalia, Nabilla Fauzi; Asdak, Chay
Teknotan: Jurnal Industri Teknologi Pertanian Vol 19, No 3 (2025): TEKNOTAN, Desember 2025
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jt.vol19n3.12

Abstract

Dalam pengelolaan Daerah Aliran Sungai (DAS) analisis hidrodinamika DAS merupakan bagian penting dari upaya mitigasi kebencanaan dan manajemen risiko banjir. Sub Das Cikamiri termasuk dalam DAS bagian hulu Sungai Cimanuk yang memiliki peran dalam pengendalian bencana hidrometeorologi. Namun studi terkait pemodelan Banjir menggunakan model integrasi hidrologi - hidrolika pada area DAS ini belum pernah dilakukan. Oleh karena itu tujuan dari penelitian ini adalah memproyeksikan potensi sebaran genangan banjir di Area Sub DAS Cikamiri meliputi luasan genangan di setiap Desa dan kedalaman genangannya. Adapun simulasi hidrologi dianalis pada debit rancangan return period 5, 10, 20, 50, dan 100 tahun. Metode pada penelitian ini terdapat dua tahapan yaitu analisis hidrologi dilakukan untuk mengetahui debit rancangan menggunakan metode SCS-CN. Selanjutnya yaitu analisis hidraulika dengan menggunakan bantuan software HEC-RAS. Permodelan terdiri dari 3 tahap yaitu pre-processing, running model HEC-RAS, dan post-processing. Dalam analisis hidrologi diperoleh hasil  simulasi model dengan data debit observasi diperoleh nilai NSE sebesar 0.856 yang artinya keakuratan model simulasi sangat memuaskan. Pada model hidraulika menunjukan potensi banjir yang berdampak pada 12 Desa. Estimasi kedalaman serta luasan wilayah terdampak paling besar terjadi pada Desa Sirnasari yang terletak pada bagian hilir Sub DAS Cikamiri dengan luas genangan rata-rata sebesar 3.52 ha dengan kedalaman yang meningkat 0.1 – 0.3 m serta luas banjir yang meningkat 0.07 – 0.40 ha seiring dengan bertambahnya periode ulang debit.
Diversity of Bird in Cultivated Area Kamojang Crater, Laksana Tourism Village, Ibun-Bandung Rasiska, Siska; Asdak, Chay; Parikesit, Parikesit; Sudarjat, Sudarjat; Gunawan, Budhi; Setiawan, Iwan
CROPSAVER - Journal of Plant Protection Vol 8, No 2 (2025)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v8i2.67181

Abstract

The birds have an important role in the cultivated areas Kamojang Crater, Cikaro subwatershed, Laksana Tourism Village, Ibun - Bandung District. The study aims to explore the diversity of birds and classified them in guild groups. The census method was carried out in June-November 2022, with a sample point count technique with a radius of 50 meters and a distance between the center point of at least 200 meters, observed in the morning (06.00-10.00 am) and afternoon (14.00-16.00 pm) at each point for 10 minutes. Located in cultivated areas were near  the nature reserve (NR), nature tourist park (NTP),protected forest (PF), and agricultural land (AL). The results showed that the birds are found 270 individu , 21 species, 7 ordo, dan 18 family. In general, the diversity of bird species in the Kamojang Crater cultivated area tends to be moderate (2,53), with a high abundance (4,09), birds species are equal in each location (0.80) and none dominate (0,11). The birds have higher Important Value Index in NR, NTP is Prinia familiaris (73,16 dan 53,58), in PF Lonchura leucogastroides (47,63), and AL is Apus Affinis (79,87). Birds found in cultivated areas near NR, NTP and AL are dominated by insectivore birds, while in the cultivated area near PF are predominated by granivore birds. According to the Similarity Index, bird communities in cultivated areas near NR have strong similarities with birds communities near NTP (62.5%, 76.92%, 29.71% and 63.06%).
Pemodelan Spasial Permeabilitas Tanah Menggunakan Metode Interpolasi Spasial di Sub-DAS Cikamiri, DAS Cimanuk Hulu Siswanto, Shantosa Yudha; Leonardo, Patrick; Asdak, Chay
Teknotan: Jurnal Industri Teknologi Pertanian Vol 20, No 1 (2026): TEKNOTAN, April 2026
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jt.vol20n1.14

Abstract

Sub-DAS Cikamiri merupakan bagian hulu dari DAS Cimanuk Hulu yang memiliki peran penting dalam pengendalian hidrologis dan konservasi lahan. Sehingga, penilaian kondisi hidrologi dan konservasi merupakan hal yang penting untuk dilakukan. Parameter permeabilitas tanah merupakan komponen yang penting dalam pemodelan untuk menilai kondisi hidrologi. Parameter tersebut membutuhkan input variabilitas spasial yang akurat. Penelitian ini bertujuan untuk membandingkan tiga metode interpolasi spasial—Inverse Distance Weighting (IDW), Ordinary Kriging, dan Ordinary Co-Kriging—dalam pemodelan distribusi permeabilitas tanah di Sub-DAS Cikamiri. Sebanyak 95 titik sampel lapangan digunakan sebagai dasar training interpolasi dan validasi. Analisis interpolasi dilakukan menggunakan perangkat lunak ArcMap10.8. Evaluasi akurasi model dilakukan dengan parameter Mean Square Error (MSE), Root Mean Square Error (RMSE), dan Normalized Root Mean Square Error (NRMSE). Hasil menunjukkan bahwa metode Co-Kriging menghasilkan prediksi paling akurat (RMSE = 24,42; MSE = 596,78; NRMSE = 1,05), disusul oleh Kriging (RMSE = 24,91; MSE = 620,65; NRMSE = 1,07) dan IDW (RMSE = 25.03; MSE = 626.80; NRMSE = 1.08). Performa Co-Kriging dikaitkan dengan kemampuannya mengatasi ketidakpastian spasial melalui proses simulasi dan pembelajaran parameter variogram secara otomatis. Oleh karena itu, dalam studi ini Co-Kriging merupakan metode terbaik untuk mengestimasi permeabilitas tanah secara spasial dalam konteks pengelolaan DAS. Temuan ini menekankan pentingnya pemilihan metode interpolasi yang tepat untuk meningkatkan akurasi input dalam pemodelan hidrologi
Co-Authors Abdurrahman, Muhammad Zhafir Ahmad Thoriq Amalia, Nabilla Fauzi Amiruddin A.Dajaan Imami Andiles Kusnadi Sentosa Anto Tri Sugiarto Anto Tri Sugiarto Asep Yusuf Asri Widyasanti B Budiono Boy Macklin Pareira Prawiranegara Devi Maulida Rahmah Dinda Febrima Napitupulu Drupadi Ciptaningtyas Dwi Rustam Kendarto Edy Suryadi Efan Yudha Winata Eza Zahrotul Fuadah Fifi Dwi Pratiwi Fuadah, Eza Zahrotul Gunawan, Budhi Hendarmawan Hendarmawan Hilman Syaeful Alam Hilman Syaeful Alam Hilman Syaeful Alam Ida Nurlinda Iga Maliga Ihsan, Daffa Aufa Irfan Ardiansah Iwan Setiawan Kharistya Amaru Leon J. Bran Leonardo, Patrick Marjan Siti Maryam Mimin Muhaemin Mochamad Anfasa Nurrachman Moh. Dede Muhammad Achirul Nanda Muhammad Achirul Nanda N.P, Sophia Dwiratna Nabila Aura Pithaloka Nadia Astriani Nugroho, Chrismaria Putri Nurpilihan Bafdal Octoyne, Aisyah Pari kesit Parikesit Parikesit Primus Metafaty Daeli Raden Bramadi Nugraha Wargadibrata Ramdhon Bermanakusumah Santika, Silvy Selly Harnesa Putri Setiawan, Ditriz Shantosa Yudha Siswanto Silvy Santika SIska Rasiska, SIska Sophia Dwiratna Sophia Dwiratna Sophia Dwiratna N.P Sophia Dwiratna, Sophia Subiyanto Subiyanto Sudarjat Sudarjat Sugiarto, Anto Tri Sunardi Sunardi SURYADI, DEDE Wagiono - Wahyu Kristian Sugandi Widiyatno Widiyatno Wilda Naily Yogina Lestari Ayu Yogina Lestari Ayu Yogina Lestari Ayu Situmorang Yohanes Christian Yulizar Yulizar Yulizar