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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains BIOGENESIS
Isdianto Isdianto
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Engineering Immunology & microbiology Other

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Sensitivitas Hidrograf Satuan Di Sungai Batang Lubuh Dengan Menggunakan Hidrograf Satuan Sintetik Clark Dalam HEC-HMS Isdianto Isdianto; Yohanna Lilis Handayani; Bambang Sujatmoko
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The method transforming of rain in HEC-HMS when applied on a DAS, it will show a different response in accordance with the selected method. Therefore it needs to known about the best transforming for sub DAS Rokan Kanan. Process on HEC-HMS program among others input data and calibration. Calibration process has six method Recession – Ratio to Peak, Clark Unit Hidrograph Time Of Concentration, Recession – Initial Discharge, Recession – Recession Constant, Clark Unit Hidrograph – Storage Coefficient, and Initial and Constan-Constan Rate. Objective function which used are Peak-Weighted RMS Error, Percent Error Peak, Percent Error Volume. The result of calibration Peak-Weighted RMS Error method=58.48. Percent Error Peak method = 1.11 and Percent Error Volume method= 0.00. Sensitivity of changes peak discharge and changes volume at parameter Initial and Constan-Constan Rate and Recession-Recession Constant with each changes presentation -76,15% and 77,70%.Keywords: hydrological modeling, unit hidrograph, sensitivity, hec-hms
PENAMBAHAN BIOCHAR BERBASIS LIMBAH PADA INCEPTISOL TERHADAP BUDIDAYA TEMBAKAU (Nicotiana tabacumL.) VARIETAS KEMLOKO DI TEMANGGUNG Katon Sasongko Damarmoyo; Buana Susilo; Lengga Nurullah Dalimartha; Eko Chandra Wiguna; Isdianto Isdianto; Maharani Pertiwi Koentjoro; Endry Nugroho Prasetiyo
Biogenesis Vol 14, No 2 (2018)
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (554.255 KB) | DOI: 10.31258/biogenesis.14.2.13-22

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ABSTRACTBiochar is a biological charcoal derived from incomplete combustion (pyrolysis) of agricultural residual materials that can increase carbon sustainably, retention of water and nutrients in soil. This research aimed to demonstrate the effect of adding biochar on inceptisol for Kemloko tobacco cultivation in Temanggung, Central Java, Indonesia. The data analysis of this research was using Factorial Random Design with two factors (treatment and dose). The results showed that the addition of biochar + compost increase productivity of 491.6 kg/ha comparing to the control with the higher tobacco quality. Chemical analysis of the respected soil showed that the biochar + compost treatment increase pH level up to 5.46 with the organic matter level and total nitrogen as well increased about 2.66% and 0.180% respectively.Keywords:  biochar, tobacco of kemloko variety, temanggung, soil chemical
Co-Authors Bambang Sujatmoko Buana Susilo Eko Chandra Wiguna Endry Nugroho Prasetiyo Katon Sasongko Damarmoyo Lengga Nurullah Dalimartha Maharani Pertiwi Koentjoro Yohanna Lilis H