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I Wayan Tika
Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Unud
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Analisis DinamikaSuhu pada Proses PengomposanJerami dicampur Kotoran Ayam dengan PerlakuanKadar Air Kadek Ardhi Krisnawan; I Wayan Tika; da Ayu Gede Bintang Madrini
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 6 No 1 (2018): April
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/j.beta.2018.v06.i01.p04

Abstract

This study aimed to determine the temperature dynamics during the composting process of rice straw with chicken manure at different moisture contents and to identify the moisture content that produces the best compost quality. Moisture content treatments were 30±2% (P1), 40±2% (P2), 50±2% (P3), 60±2% (P4), and 70±2% (P5), with a straw-to-manure ratio of 3:4. Parameters measured during composting included temperature, pH, and decomposition rate, while compost quality parameters included pH, final moisture content, volatile solids, carbon, nitrogen, and C/N ratio. Temperature dynamics were generally uniform, with maximum temperatures ranging from 49.4–49.6°C, except for P1 which reached 34.8°C. The best treatment was P4 with 60±2% moisture content, producing compost with a C/N ratio of 15.68 that met SNI 19-7030-2004 standards, characterized by blackish-brown color, crumb texture, soil-like odor, final moisture content of 35.55%, pH 7.2, and volatile solids of 56.50%.
Penerapan Koefisien Pemias Untuk Redesain Bangunan TembukuPengalapan pada Jaringan Irigasi Subak(Studi Kasus di Kabupaten Tabanan Provinsi Bali) I Made Marta Supriawan; I Wayan Tika; IMade Anom Sutrisna Wijaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 6 No 1 (2018): April
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/j.beta.2018.v06.i01.p07

Abstract

This study aimed to analyze the pemias coefficient in the quarter channel (telabah penyahcah) of subak irrigation and to determine the proper dimensions of dividing and tapping structures for proportional water distribution according to land area. Real discharge was measured by observing the width and height of water in the structures, while the proportional discharge was calculated based on the irrigated land area. The real discharge data were used to determine the pemias coefficient, which in turn guided the calculation of pemias width for redesigning the structures. The analysis showed that the average pemias coefficient was 0.024, with an RMSE of 13.2% in the existing tembuku pengalapan. By redesigning the structure based on the pemias coefficient, the theoretical RMSE is expected to be reduced to below 10%.
Co-Authors da Ayu Gede Bintang Madrini I Made Marta Supriawan IMade Anom Sutrisna Wijaya Kadek Ardhi Krisnawan