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All Journal Indonesian Journal of Geography Teknotan: Jurnal Industri Teknologi Pertanian Journal of Degraded and Mining Lands Management Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Litbang Kota Pekalongan
Chandra Setyawan, Chandra
Departemen Teknik Pertanian Dan Biosistem, Fakultas Teknologi Pertanian, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Mechanical Engineering Public Health Other

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EVALUASI KINERJA SISTEM IRIGASI Chandra Setyawan; Sahid Susanto; dan Sukirno
Teknotan: Jurnal Industri Teknologi Pertanian Vol 7, No 2 (2013)
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAK Instrumen evaluasi kinerja sistem irigasi secara kuantitatif dikembangkan dengan pendekatan sistem dan berbasis keluaran telah diaplikasikan di wilayah sistem Irigasi Serayu, Jawa Tengah. Keluaran sistem dipakai sebagai indikator utama (main indikator) mencerminkan tingkat kecukupan dan ketepatan pemberian air, efisiensi irigasi, kondisi dan fungsi sistem drainase, luas tanam dan produktivitas. Komponen sistem irigasi dalam bentuk input, proses, dampak dan keberlanjutan sistem irigasi dimasukkan sebagai indikator tambahan (auxiliary indicator). UPT Jeruk Legi. UPT Kroya dan UPT Sumpiuh dipakai sebagai daerah irigasi sampel yang masing-masing mewakili daerah atas, tengah dan bawah. Dengan menggunakan rentang skor 1-4, hasil penilaian kinerja sistem irigasi berada dalam posisi baik.  Daerah irigasi yang berada di daerah atas dan tengah mempunyai total skor 2,87 dan 2,20  dan daerah bawah mempunyai total skor 2,13. Berbasis pada luaran, komponen evaluasi dipakai sebagai dasar dalam menilai kinerja Operasi dan Pemelihataan (O&P). Hasilnya menunjukkan bahwa kinerja O&P daerah irigasi bagian atas termasuk kategori sangat baik (skor 3,05) dan bagian tengah dan bawah termasuk kategori baik (skor 2,50 dan 2,42). Dengan menempatkan posisi kinerja sistem Irigasi dalam bentuk kuadranisasi menunjukan untuk UPT Jeruk Legi dan Kroya berada pada kuadran I yang mengindikasikan prasyarat kinerja sistem irigasi terpenuhi untuk menghasilkan keluaran yang diinginkan, sedangkan untuk UPT Sumpiuh berada pada kuadran II yang berarti prasyarat kinerja sistem irigasi masih memerlukan peningkatan untuk memenuhi keluaran yang diinginkan. Kata kunci: evaluasi kinerja sistem irigasi, O&P sistem irigasi, indikator dasar, indikator                     tambahan 
Land and water conservation practices in tropical agricultural watershed Chandra Setyawan; Sahid Susanto; Chin-Yu Lee
Journal of Degraded and Mining Lands Management Vol 6, No 2 (2019)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1853.773 KB) | DOI: 10.15243/jdmlm.2019.062.1697

Abstract

Large-scale land cultivation practices for agriculture which disregard conservation principles are resulting in land degradation problems in tropical regions. The differences of environmental condition become the main concern for determining proper strategies to overcome this problem. The present study aimed to evaluate the application of land and water conservation (LWC) practices in tropical agricultural watersheds. The conservation practices (in the form of regreening bare areas and construction of LWC structures i.e. small-scale dam, terrace and stone weir) were performed in a partnership scheme involving government, higher education institution, local inhabitant and private party. The result showed that the partnership approach made conservation activities possible in a shorter time and a lower risk of failure. Economically, it reduced the unit cost of the conservation structures construction up to 70%. We also assessed the dam performance for LWC purpose. The assessment indicated the dam can effectively increase soil water storage and control the river sedimentation. The use of local resources (community and materials for conservation structures) enabled the sustainable of LWC practices on a watershed scale.
Dampak Perubahan Curah Hujan Terhadap Tingkat Kerentanan Erosi Tanah Di Sub DAS Merawu, Jawa Tengah Donnie Koes Nugraha; Bayu Dwi Apri Nugroho; Chandra Setyawan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 3 (2021): September
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i3.356-366

Abstract

This research was held to estimate rainfall and change in soil erosion vulnerability from 2020 to 2050 in Merawu Sub-Watershed, Banjanegara District with RCP 2.6, 4.5 and 8.5. The RCP is an overview of the concentration trends for greenhouse gases, aerosols and land use change created by the climate modeling community. Rainfall prediction was generated from SDSM Software and combined with USLE to predict soil erosion in ArcGIS 10.4. Changes in rainfall intensity are an important factor in changes of soil erosion rates because the kinetic energy of falling rainwater can cause soil erosion.The results showed rainfall in Banjarnegara Station at 2020-2050 with RCP 2.6,4.5 and 8.5 were increasing by +0,26%; +0,60%; +0,52%, while in Kalisapi Station were decreasing by -1,54%; -1,65% dan -2,20%. The change of soil erosion vulnerability prediction showed that soil erosion in Sub-DAS Merawu at 2020-2050 with RCP 2.6,4.5 and 8.5 in very light category were -0,02%;-0,02%;-0,03%, light category were -0,17%;-0,17%;-0,17%, moderate category -0,05%;-0,05%;-0,04%, heavy category -0,26%;-0,35%;-0,37%, and very heavy category were +1,46%;+1,88%;+1,95%. While the average soil erosion prediction at RCP 2.6, 4.5 and 8.5 were +0,86, +1,19% and +1,03%, respectively.  Keywords: soil erosion prediction, rainfall prediction, SDSM Software, Sub-DAS Merawu
Effect of Extreem Rainfall Pattern on The Growth and Yield of Chili Peppers Wini Prayogi Abdila; Bayu Dwi Apri Nugroho; Chandra Setyawan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 1 (2022): March
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i1.117-129

Abstract

The purpose of this study was to observe the effect of extreme rainfall patterns in the DI Yogyakarta region on the growths of rawit/cayenne (Capsicum frutescens L.) and keriting/curly (Capsicum annum) chili peppers. The experimental design used was Randomized Complete Block Design (RCBD) with single factor consisting of three levels namely: maximum frequency index (P1), rainfall intensity index (P2), and control treatment (K).  The frequency and intensity indexes (P1 and P2) of May-June-July from each weather station were used as the bases of rainfall simulations applied in watering the rawit and keriting chili pepper cultivations. Whilst, control (K) was the watering on the basis of optimum crop water requirement. The growth parameters observed included plant height, number of leaves, age of flowering, age of fruiting, age of first harvest, final weight of biomass, and yield. The data sets were analyzed by using one-way Analysis of Variance (ANOVA) at α=0.05 for each species. The results showed that the three levels of treatments did not significantly affect the growth and yield based on all parameters observed for both of the two species. So even the potted media were flooded, the water easily drained through the holed base of pots, making plant growth undisturbed. This finding suggested that planting chili peppers in pots or elevated media could mitigate the effect of extreme rainfalls.Keywords: Extreme Precipitation, Extreme Indices, Plant Growth, chili pepper
Spatial Modeling of Vegetation Cover for Soil Erosion Control Based on Arc GIS and the RUSLE Models Dimas Prabowo Harliando; Chandra Setyawan; Hanggar Ganara Mawandha
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.14-27

Abstract

Deforestation in the Serayu watershed, Central Java province, Indonesia for agriculture and other uses leaves only 0.73% of vegetation. It has triggered a number of problems such as soil loss (erosion), landslides, floods and sedimentation downstream. Environmental damage control needs to be applied through appropriate conservation programs. This study aims to understand the distribution of soil erosion and the effectiveness of soil erosion control by using vegetation cover. Soil erosion modeling and its correlation to vegetation cover was performed by using an Arc GIS based model of the Revised Universal Soil Loss Equation (RUSLE) through five scenarios of vegetation landscape cover such as 10%, 15%, 20%, 25%, and 30% of the total area of the study site. Five parameters namely rain erosivity (R), soil erodibility (K), slope-length (LS) and crop management (C) and conservation practices (P) factor were used to calculate soil erosion. The results indicated 82.25 tons/ha/year soil erosion reduction due to enhancement of vegetation cover from the actual condition 0.73% to the 30% vegetation cover condition. The increase of 5% vegetation landscape cover (forest) detracted the soil erosion rate by 10,20 tons /ha/year. Very high and high soil erosion hazard levels were found in the northern, east, and west watershed areasKeywords:   Soil erosion, RUSLE model, GIS, Serayu watershed, Vegetation cover
A SPATIAL MULTI CRITERIA EVALUATION DAN WEIGHTED LINEAR COMBINATION UNTUK EVALUASI KESESUAIAN LAHAN KAKAO: KASUS DESA NGLANGGERAN - DAERAH ISTIMEWA YOGYAKARTA Antonius Wahyu W; Ngadisih Ngadisih; Chandra Setyawan; Muhamad Khoiru Zaki
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 11 No 1 (2023): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (800.103 KB) | DOI: 10.29303/jrpb.v11i1.438

Abstract

Tujuan utama penelitian ini adalah menerapkan dua metode untuk menetapkan kelas kesesuaian lahan Kakao di Desa Nglanggeran. Metode yang digunakan adalah Spatial Multi-Criteria Evaluation (SMCE) dan Weighted Linear Combination (WLC) dengan menggunakan parameter evaluasi lahan: curah hujan, kelerengan, temperatur, pH tanah, tekstur tanah, kandungan bahan organik tanah, dan parameter ekonomi (jarak dari jalan dan pasar). Alat yang digunakan untuk penelitian yaitu seperangkat komputer, ArcGIS 10.3, kamera drone (DJI Phantom 4 Pro V2), peralatan laboratorium untuk menganalisis jenis tanah, dan sekop & ring sampler untuk pengambilan sampel tanah. Bahan yang diperlukan dalam penelitian yaitu sampel tanah dari 10 titik kebun kakao yang ada di Desa Nglanggeran untuk menentukan tekstur, kandungan bahan organik dan pH tanah. Selain itu, penelitian ini menggunakan shapefile peta Desa Nglanggeran, data DEMNAS, dan data iklim. Terdapat tiga penggunaan lahan yang dijadikan target evaluasi lahan yaitu agroforestri, semak, dan lahan tadah hujan seluas 518,66 Ha (64,6% dari total luas wilayah desa). Penelitian ini memodifikasi pembagian kelas, pembobotan, dan skoring dari setiap parameter yang digunakan. Validasi metode SMCE dan WLC dilakukan dengan ratio pixel kebun kakao dan kelas kesesuaian lahan. Penelitian ini menetapkan bahwa sebagian besar wilayah di Desa Nglanggeran merupakan daerah dengan kelas kesesuaian kurang baik untuk budidaya kakao. Lahan dengan kelas sangat sesuai (S1) seluas 14,9% dari total target area. Lahan dengan kategori marginal (S2 dan S3) 49,3% dari total luas wilayah desa. Sedangkan lahan dengan kelas kesesuaian tidak sesuai (N)  0,4% dari total luas wilayah desa. Faktor yang menjadi pembatas kesesuaian lahan Kakao di Nglanggeran (N) adalah kelerengan lahan yang curam, nilai pH tanah yang rendah, dan tekstur tanah yang kurang sesuai di daerah tersebut. Oleh karena itu, penelitian ini mendorong untuk melakukan rekayasa/modifikasi kelerangan lahan dan sifat tanah dengan bahan pengkondisi tanah. Penelitian ini membuktikan bahwa metode SMCE dan WLC dapat diterima untuk menilai kesesuaian lahan kakao di Nglanggeran.
Mitigasi Dampak Banjir dan Rob Terhadap Lahan Pertanian di Kota Pekalongan Muhammad Wiji Nur Huda Huda; Murtiningrum Murtiningrum; Hanggar Ganara Mawanda; Muhammad Khoiru Zaki; Prieskarinda Lestari; Chandra Setyawan; Bayu Dwi Apri Nugroho; Ngadisih Ngadisih
JURNAL LITBANG KOTA PEKALONGAN Vol. 21 No. 1 (2023)
Publisher : Badan Perencanaan Pembangunan, Penelitian dan Pengembangan Daerah (Bappeda) Kota Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54911/litbang.v21i1.235

Abstract

Pekalongan City has an area of 46,42 km2. Based on land use, 19% of the area, which is 886 ha, is agricultural land. The current flood and tidal disasters have an impact on various sectors, including agriculture. Efforts to deal with this problem have been made by the central, provincial and city governments. However, these efforts have not provided a real solution because floods and tidal disasters continue to expand. Therefore, research is needed which aims to identify the impact of flooding and tidal on agricultural land and provide recommendations for mitigating the impacts of flooding and tidal on agricultural land in Pekalongan City. The research was conducted through data collection methods, data quality testing and analysis, disaster mitigation scenarios, and research outputs. Based on the parameters of class III water quality standards, the BOD values at S1, S3, and S6 were 12.5; 27.6; 7.6 mg/L and the COD values at S2, S3, S6 were 53.7; 88.7; 46 mg/L which exceeds/does not meet the requirements. Therefore, it is recommended that good water governance management, water regulation with the mini polder concept, carry out reclamation of affected agricultural land, manufacture of household domestic sewage sanitation channels, and manufacture of purifier ponds.
Application of Wischmeier-Smith, EPIC, M-USLE, and WEPP Methods for Determination of Erodibility Factor (K) of Soil Brigitta Ery Septiyanti; Ngadisih Ngadisih; Chandra Setyawan; Sahid Susanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.653-664

Abstract

The purpose of this study was to apply and to evaluate four methods (Wischmeier-Smith, EPIC, M-USLE, and WEPP) for calculating erodibility factor (K) of soil. The field measurement was carried out in a village laid on Southern Mountains of Java, where cocoa-based agrotourism is growing fast in the area. The land use of study area was captured by using drone. The soil samples were taken from land use of shrub, moors, and garden. Then, the samples were analyzed physical and chemical properties. This study obtained the K factor was in the range 0.12 to 0.22 for Wischmeir-Smith, 0.29 to 0.33 for EPIC, 10–3 to 3×10–4 for M-USLE, and 2×10–4 to 0.1 for WEPP. Based on literature (similar study and site, or soil type approach), the K factor obtained from Wischmeier-Smith method was in the range of reference. While other methods, the K factor was higher or lower than benchmark value.  The proposed method in this study could be applied to calculate K factors of soil. However, the M-USLE and WEPP methods still have shortcomings in the simulation process of erosion and surface run off rates to obtain the K factor.  Keywords: Agrotourism, Drone, Land use, Soil erosion
Pendekatan Komprehensif Kesesuaian Lahan Budidaya Tanaman Padi Sawah di Kabupaten Paser, Provinsi Kalimantan Timur Ngadisih, Ngadisih; Fitriana, Lely; Susanto, Sahid; Arief, Sigit Supadmo; Zaki, Muhamad Khoiru; Setyawan, Chandra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 12 No 2 (2024): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jrpb.v12i2.661

Abstract

This study aimed to present a comprehensive evaluation of land suitability for wetland paddy cultivation in Paser Regency, East Kalimantan Province using the Simple Additive Weighting (SAW) process and Geographic Information System (GIS) techniques. The ten factors determining land suitability selected were soil texture, soil depth, soil drainage, soil type, rainfall, temperature, slope, distance from roads, distance from rivers and land use. The factor weights were considered the same, for the suitability analysis of the use of rice development in the study area. Then, after carrying out a weighted sum analysis, Paser Regency was qualitatively categorized as very suitable, quite suitable, marginally suitable, not currently suitable for rice land development with values ​​of 20, 39, 28, 13% respectively. Meanwhile, taking into account land use, the very suitable category was 20% and quite suitable was reduced to 33% of the total research area. Based on the available land, the opportunity for developing rice plantations in Paser Regency was relatively large. The study revealed that the SAW approach technique was acceptable for identifying appropriate land for rice development in the study area.
Rainfall-Runoff Modelling in Tropical River Basin for Water Conservation Planning Using Water Recharge Ponds M Yusfan Yuzanni; Chandra Setyawan; Sahid Susanto; Yekti Nugraheni
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.v13i4.1171-1181

Abstract

Land conversion in river basins poses a threat to future water availability. This research aims to estimate water availability, particularly stream flow for planning of water conservation. Water availability was analyzed using a hydrology tank model. The model was calibrated by using stream flow data measured in a reservoir and then used to estimate water availability in the reservoir's catchment area. The value of model parameters such as wet infiltration coefficient (WIC), dry infiltration coefficient (DIC), soil moisture capacity (SMC), initial soil moisture (ISM), initial groundwater storage (IGWS), groundwater recession constant (k) was determined through the calibration process. The results showed that the model has good accuracy for stream flow calculation indicated by the value of statistical parameters i.e. coefficient of correlation (R) = 0.93, a volume of error (VE) = 0.04, and a coefficient of efficiency (CE) = 1.00. During the wet season, the specific maximum discharge is 0.11 m3s–1km–2. Meanwhile, the minimum specific discharge is 0.030 m3s–1km–2. These differences indicate that optimizing rainwater harvesting during the wet season is required. Rainfall-runoff modeling reveals the potential for surface runoff during the wet season is 1,139 mm. This finding provides an essential reference for water conservation, especially using water recharge ponds. Keywords: Hydrology tank model, Stream flow, Tropical river basin, Water availability, Water conservation.
Co-Authors Antonius Wahyu W Arief, Sigit Supadmo Bayu Dwi Apri Nugroho Brigitta Ery Septiyanti Chin-Yu Lee dan Sukirno Dimas Prabowo Harliando Donnie Koes Nugraha Faiz Afnan Nurrahman Fitriana, Lely Hanggar Ganara Mawanda Hanggar Ganara Mawandha M Yusfan Yuzanni Muhamad Khoiru Zaki Muhammad Khoiru Zaki Muhammad Wiji Nur Huda Huda Murtiningrum Murtiningrum Nafisa, Gina Isna Ngadisih Ngadisih Ngadisih Ngadisih Ngadisih Ngadisih Ngadisih Ngadisih Prieskarinda Lestari Pulungan, Nur Ainun Harlin Jennie Sahid Susanto Sahid Susanto Sahid Susanto Sigit Supadmo, Sigit Wini Prayogi Abdila Yekti Nugraheni Yuzanni, M. Yusfan Zaki, Khoiru