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All Journal Indonesian Journal of Geography Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Keteknikan Pertanian Tropis dan Biosistem agriTECH Jurnal Wilayah dan Lingkungan Jurnal Ilmiah Rekayasa Pertanian dan Biosistem SAINS TANAH - Journal of Soil Science and Agroclimatology Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Agrienvi : Jurnal Ilmu Pertanian Jurnal Manusia dan Lingkungan

Sahid Susanto

Departemen Teknik Pertanian Dan Biosistem, Fakultas Teknologi Pertanian, Universitas Gadjah Mada

Author-ID : 396070

Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mechanical Engineering Social Sciences Other

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Model Hidrologi Produksi Air Bulanan Bagian I : Kalibrasi dan Analisis Kepekaan Lukman Hidayat; Putu Sudira; Sahid Susanto
agriTECH Vol 16, No 2 (1996)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

In a hydrologic model, sensitivity analysis is essential in order to determine the importance of parameters on model outputs, and to expIore more completely the validity of the model. The study focused on calibrating and the sensitivity analysis of hydrologic model parameters. A monthly water yield model of rainfall-runoff relationship has been created in order to simulate runoff volumes. It was controlled by four parameters, those are: fo (infiltration capacity, mm/hr), Mc(the moisture-holding capacity of the lower zone, mm), Sm (maximum possible seepage rate, mm/day), and a (a constant defining the portion of seepage that appears as runoff). An automatic parameter optimization routine was presented. Eleven small watersheds (less than 1000 square km) in Central Java were used for calibration. The results of sensitivity analysis showed that the increasing value of Fo and Mo will be followed by the decreasing of model output (water yield). In contrast, the increasing value of Sm and a will be followed by the increasing of model output Fo more sensitive than Mc, Sm, and a.Based on graphical and statistical criteria, the monthly water yield can be simulated well by the model.

Model Hidrologi Produksi Air Bulanan Bagian II : Analisis Korelasi Antara Parameter Model dan Karakteristik DAS Lukman Hidayat; Putu Sudira; Sahid Susanto
agriTECH Vol 16, No 3 (1996)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

An automatic parameter optimization routine was presented. Eleven small watersheds (less than 1000 square km) in Central Java were used for calibration. A method for estimating four parameters water yield model was obtained Equations for predicting the parameters were developed on the correlation analysis between model parameters and measurable watershed characteristics.

Cara Mengatasi Detonansi pada Motor Bakar Sahid Susanto
agriTECH Vol 1, No 1 (1980)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Menentukan Waktu Kerja Peralatan Mekanis dalam Pembukaan Hutan dengan Menggunakan Teori Peluang Kejadian Sahid Susanto
agriTECH Vol 2, No 2 (1981)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Perspektif Pengembangan Sumberdaya Air yang Berkelanjutan dalam Tataan Proses Transformasi Pembangunan Pertanian Subsisten Menuju Pertanian Berorientasi Industri Sahid Susanto
agriTECH Vol 18, No 1 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Water resources development is one of the key factors in the agricultural process production. Considering that water resource as a part of natural water circulates dynamically in the frame of natural law, transformation of subsistence agriculture to agro-based industry substantively affects water resources development. From this trend was then used to route the hydrology and water resources development for agricultural process production. At the operational level, the interlinked dimensions of sustainable of water resources development can be recognized economic, environmental, social and cultural. For water resources development to be sustainable in the long-term there is a need to be balance those four dimensions. In steering toward such transformation of subsistence agriculture to agro-based industry, the sustainability of water resources development to economic development in a macro scale must be linked

Modal Sosial Masyarakat di Kawasan Penyangga Taman Nasional Gunung Ciremai untuk Mendukung Skema Pengelolaan Berbasis Kemitraan Rahmat Hidayat; Djoko Marsono; Sahid Susanto; Ronggo Sadono
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.8.2.130-146

Understanding about social capacital of community has an essential role in supporting the collaborative management of conservation area. This study aims to assess the characteristics of elements of social capital and measure the relationship of the effects of elements of social capital on social capital owned by communities around the buffer zone of Taman Nasional Gunung Ciremai (TNGC). Study site was located in the upstream area of Cisanggarung watershed. Data collection was undertaken through three stages, i.e. literature study, field observation, and inteview. The analysis was conducted using confirmatory factor analysis and descriptive test. The results demonstrated that the social capacital of communities around the buffer zone of TNGC, even though in the same watershed ecosystem unit they had varied characteristics. This fact is proven by the differences in social capital categories and the most influential elements of social capital in the formation of social capital in rural areas that are buffer zones. In order to support the collaborative management in TNGC, the sub-elements of social capital which is at a very weak and weak level, as well as the most influential social capital element in the formation of social capital in each village, should be the main consideration in increasing social capital and preparing conservation collaborative programs that are will be done in each village.

the Composition and Structure of Vegetation of The Upstream Cisanggarung Watershed, Ciremai Mount National Park Rahmat Hidayat; Djoko Marsono; Sahid Susanto; Ronggo Sadono
Agrienvi: Jurnal Ilmu Pertanian Vol. 16 No. 2 (2022): Desember Agrienvi : Jurnal Ilmu Pertanian
Publisher : Agrienvi: Jurnal Ilmu Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/aev.v16i2.5553

Vegetation is one of the important biophysical components of ecosystems in landscape-based conservation area management. The purpose of the study was to identify the composition and structure of the vegetation in the Upper Cisanggarung watershed area of the Mount Ciremai National Park. Data were collected through vegetation analysis using the double plot method with systematic sampling on various types of land cover. Data analysis was done by quantitative descriptive. The results showed that the composition of the number of species in the plantation forest land cover type was higher than the natural forest and shrub land cover types. The total number of species found in all research areas is 94 species. Based on the horizontal stand structure, all land cover types approach the shape of the inverted J distribution (negative exponential), with the horizontal stand graph of plantation forest being at the top position, followed by natural forest and at the bottom being shrubs. Furthermore, plantation forest cover has the highest species diversity index and species richness index at the growth rate of seedlings to poles compared to other land covers, while for the tree level the species diversity index and the highest richness index are owned by natural forests.

Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed Muchamad Wahyu Trinugroho; Sigit Supadmo Arif; Sahid Susanto; Bayu Dwi Apri Nugroho; Abi Prabowo
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 19, No 2 (2022): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v19i2.61640

Rainfed farming is vulnerable to climate variability, which changes rainfall patterns. Rainfall variability disrupts rainfed rice cultivation because a change in rainfall will affect the rice crop calendar. An analysis of long-term trends over a specific area is required to understand rainfall variability. The aim of this study was to assess climate variability in terms of rainfall magnitude and frequency by analyzing spatial and temporal rainfall trends in Bengawan Solo Sub-Watershed as well as the rainfed rice production. Daily rainfall data from 10 rain gauge stations over the sub-watershed area from the years 1975 to 2020 were used. The data was managed and collected by the Bengawan Solo Watershed authority. Pearson, Mann-Kendall, and Sen’s Slope tests were applied to assess the recorded data correlation, rainfall trends, and magnitude of trends into annual, monthly, and 10-day. The findings of the study indicated the spatial and temporal inhomogeneous rainfall pattern for all locations for 10-day, monthly and annual patterns. The mountainous regions at Tawang Mangu and Ngrambe stations tend to experience an upward trend (positive magnitude), while the coastal regions at Nglirip and Bojonegoro stations have a downward trend(negative magnitude). Those trends also confirmed that coastal regions would be drier than mountainous regions in the future. Understanding this rainfall trend can assist with rainfed farming strategic planning.

PREDIKSI SUMBERDAYA AIR DI PULAU KECIL: STUDI KASUS DI PULAU ROTE NUSA TENGGARA TIMUR (Prediction of Water Resources in Small Island: Case Study in Rote Island of East Nusa Tenggara Province, Indonesia) Nikodemus P.P.E. Nainiti; Sahid Susanto; Putu Sudira
Jurnal Manusia dan Lingkungan Vol 11, No 2 (2004): Juli
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jml.18619

ABSTRAKStudi ini bertujuan untuk memprediksikan ketersediaan air di pulau Rote yang kering di Nusa Tenggara Timur. Penelitian ini menggunakan model hidrologi yang dikembangkan oleh Vanden Beken and Byloos. Data yang digunakan adalah data hidrologi bulanan selama 6 tahun. Dalam model ini dikaji 5 parameter yakni (1) jenis vegetasi, (2) kondisi tanah, (3) koefisien permukaan. (4) perkolasi, dan (5) aliran air. Penelitian ini menemukan bahwa ketersediaan air sangat tinggi pada musim hujan, yaitu dari Desember sampai Maret. sementara itu ketersediaan air sangat sedikit pada musim kering yakni pada bulan April sampai Oktober. ABSTRACTThis study aims at predicting water resources availability in the small island having dry climate especially in Rote Island of East Nusa Tenggara Province. The study applied the hydrologic model of Vanden Beken and Byloos. The hydrologic data used for analyzing were monthly data for the period of six years. The parameters in the model include a1 (influenced by kinds of vegetation and soil characteristic), a2 (influenced by soil coarseness), a3 (coefficient of runoff), a4 (influenced by percolation), a5 (seepage to the river). The parameters obtained were correlated to characteristics of ungagged watersheds to find out the volume of water of those watersheds. The statistical and graphical analysis for verification of the model indicated that the period of wet months are December to March, where water resources availability is very high, meanwhile is very low during the dry months (April-October).

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

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

Co-Authors - Mahmud Abi Prabowo Arief, Sigit Supadmo Bayu Dwi Apri Nugroho Brigitta Ery Septiyanti Chandra Setyawan, Chandra dan Sukirno Djoko Marsono Dyah Susilokarti Dyah Susilokarti Dyah Susilokarti Fitriana, Lely Heru Joko Lilik Sutiarso Lilik Sutiarso Lilik Sutiarso Lukman Hidayat Lukman Hidayat Lukman Hidayat Marten Luter Lano Moch Maksum Mochammad Maksum Moses T. Macalino Muchamad Wahyu Trinugroho Muhamad Khoiru Zaki Nafisa, Gina Isna Ngadisih Ngadisih Ngadisih Ngadisih Nikodemus P.P.E. Nainiti Nikodemus P.P.E. Nainiti, Nikodemus P.P.E. Nugroho Tri Waskitho Pulungan, Nur Ainun Harlin Jennie Putu Sudira Putu Sudira Putu Sudira Putu Sudira Putu Sudira Putu Sudira Putu Sudira Rachmad Jayadi Rahmat Hidayat Rahmat Hidayat Ridwan Ridwan Ronggo Sadono SIGIT SUPADMO ARIF Sigit Supadmo, Sigit Susilan Hidayat Yuzanni, M. Yusfan Zaki, Khoiru

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