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All Journal Agromet Jurnal Agrista Jurnal Matematika Sains dan Teknologi Jurnal Tanah dan Iklim
Hidayat Pawitan
Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry Mathematics Other

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PEMODELAN SISTEM DINAMIK PENILAIAN KESESUAIAN AGROKLIMAT BERDASAR HUBUNGAN RADIASI DAN CURAH HUJAN DENGAN FASE PERTUMBUHAN TANAMAN KELAPA SAWITDYNAMIC SYSTEM MODELLING OF AGROCLIMATE LAND SUITABILITY BASE ON RELATIONSHIP OF RADIATION AND ... Lukman H. Sibuea; Hidayat Pawitan; Yustika S. Baharsyah; Yonny Koesmaryono; Syarifuddin Karama; Rokhmin Dahuri
Agromet Vol. 17 No. 1 & 2 (2003): June 2003
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1616.497 KB) | DOI: 10.29244/j.agromet.17.1 & 2.50-61

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PEMODELAN FLUKTUASI MUKA AIR TANAH UNTUK MENDUKUNG PENGELOLAAN AIR PADA PERTANIAN LAHAN RAWA PASANG SURUT TIPE A/B Ngudiantoro; Hidayat Pawitan; Muhammad Ardiansyah; M Yanuar J. Purwanto; Settings Robiyanto H. Susanto
Jurnal Matematika Sains dan Teknologi Vol. 10 No. 2 (2009)
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.866 KB) | DOI: 10.33830/jmst.v10i2.582.2009

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The objectives of this research are to develop a model of water table fluctuation on tidal lowland area of A/B type. The results of the research are expected to support of the agricultural development on tidal lowland area, especially on water management, because the water management play an important role in the agricultural on tidal lowland area. The water table on tidal lowland area fluctuates according to space and time. The water table controls at a certain depth can support the plant growth and the pyrite oxidation restraint. The model of water table fluctuation which is developed in this research based on the ellipse concept. The research was conducted on the reclamation area of tidal lowland at the fourth tertiary block in P8-12S Delta Telang I, Banyuasin district, South Sumatra province. The simulations of model show good result of estimating the depth of water table on tidal lowland area of A/B type. The proportion of variation the depth of water table which can be explained by model that is 89,6% up to 95,5% with standard error of the estimate is 0,021-0,035 meters. The parameter of the water level in the tertiary canals has high sensitivity to the model.
Pengembangan Metode Prediksi Produksi Air DAS untuk Sungai-sungai Utama di Aceh Husnan Husnan; Hidayat Pawitan; Gatot Irianto; Kukuh Murti Laksono; Hairul Basri
Jurnal Agrista Vol 12, No 3 (2008): Volume 12 Nomor 3 Desember 2008
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1293.168 KB)

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Developing Prediction Method of Watershed for Main Rivers in AcehABSTRACT. The conversion of rural land to urban land usually increases erosion, discharge and volume of storm runoff in watershed. It also causes other problem that effect soil and water. An urban or urbanizing watershed is one in which impervious surface cover or will soon cover a considerable area. Impervious surface includes roads, side walk, parking lots and building. Natural flow paths in the watershed may be replaced or supplemented by paved gutters, storm sewers or other elements of artificial drainage. Hydrologic studies to determine runoff and peak discharge should ideally be base on long-term stationary stream flow records for the area, such records are seldom available for small drainage areas. Even were they are available, accurate statistical analysis of them is usually impossible because of the conversion of land to urban uses during period of record. It therefore is necessary to estimate peak discharge with hydrologic models based on measurable watershed characteristics. Only through understanding of these characteristic and experience in using these models can be make sound judgments on how to alter model parameter to reflect changing watershed conditions.
Dinamika Aliran Bawah Permukaan pada Berbagai Kandungan Kimia Air secara Spasial dan Temporal di dalam Daerah Aliran Sungai Nani Heryani; Hidayat Pawitan; M. Yanuar J. Purwanto; Kasdi Subagyono
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 37, No 1 (2013)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v37n1.2013.45-56

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Co-Authors Gatot Irianto Hairul Basri Husnan Husnan Kasdi Subagyono Kukuh Murti Laksono Lukman H. Sibuea M Yanuar J. Purwanto M. Yanuar J. Purwanto Muhammad Ardiansyah Nani Heryani Ngudiantoro . Rokhmin Dahuri Settings Robiyanto H. Susanto Syarifuddin Karama Yonny Koesmaryono Yustika S. Baharsyah