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Yohanes Setiyo
Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana. Kampus Bukit Jimbaran, Badung-Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Kajian Efektivitas Beberapa Model Tumpukan Pada Pengomposan Kotoran Sapi Dan Jerami I Wayan Krispedana; Yohanes Setiyo; Bintang Madrini
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 1 (2022): 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/JBETA.2022.v10.i01.p02

Abstract

The biomass of the rice harvest is in the form of straw waste produced in one harvest season reaching 25 tons/ha and can be used as raw material for making compost. This research was conducted to determine the effect of different composting pile models of cow manure and straw, and to know the appropriate pile model so that the composting process of cow manure and straw produces compost in accordance with SNI No. 19-70302004. This study used 3 treatments, namely: P1 (treatment using an open windrow pile model), P2 (treatment using a static pile model), P3 (treatment using a Chinese pile model). The materials used in each treatment have a weight of 35 kg with a ratio of straw and cow manure of 2: 1. The observed parameters are pH, moisture content, temperature, nitrogen, carbon, and C/N ratio. The composting process with P3 treatment using the china model pile treatment took 48 days, P2 treatment days using a static pile was take 51 days and P1 using an open windrow pile was take 45 days, the results of composted straw and cow manure on the three treatments had met the SNI No. 19-70302004 which is used as a reference for assessing the quality of compost.
Pengaruh Penambahan Bakteri Nitrifikasi Pada Fermentasi Urin Sapi Terhadap Kualitas Pupuk Organik Cair Gede Jaya Kusuma Putra; Yohanes Setiyo; I Nyoman Sucipta
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 1 (2022): 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/JBETA.2022.v10.i01.p025

Abstract

The purpose of this study was to examine the effect of adding Nitrifying bacteria in the processfermentation of cow urine, so that the best POC(liquid organic fertilizer) quality was obtained. This research used a completely randomized design (RAL), with five different treatments and three replications. The treatments were carried out using one factor MN1 (2% mollase and Nitrifying Bacteri1%), MN2 (2% mollase and Nitrifying Bacteri2%), MN3 (2% mollase and Nitrifying Bacteri 3%), MN4 (2% mollase and Nitrifying Bacteri 4%), MN5 (mollase 2% and Nitrifying Bacteri 5%) and put into cow urine as much as 5 liters. This fermentation was carried out for 21days, the observed variables were Electrical Conductivity (EC), Degree of Acidity (pH), Total Dissolved Solids (TDS), temperature, microbial population, C-Organic, and N-total. In the fermentation process for 21 days, the N-Total value was not significantly different for each sample. While the C-Organic on day 21 of the MN5 sample had the lowest value, namely 0.52%. While the C-Organic on day 21 of the MN5 sample had the lowest value, namely 0.52%. For the results of the bacterial population samples MN4 and MN5 on day 15 experienced a decrease in population development. During the 21-day fermentation process the best results occurred in MN2 samples (2% molasses and 2% nitrifying bacteria), when viewed from the final values of TDS, EC and C-Organic. This research can increase N-total and the development of bacteria which is quite good, but this result is still far from the standard set by the Decree of the Minister of Agriculture of the Republic of Indonesia No: 261/KPTS/SR.310/M/4/2019.
Pengaruh Hydrocooling dan jenis Plastik Terhadap Mutu Jagung Manis (Zea mays L. Saccharata) Selama Penyimpanan Dingin Ni Luh Putu Sarasulistian; Ida Ayu Rina Pratiwi Pudja; Yohanes Setiyo
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 1 (2022): 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/JBETA.2022.v10.i01.p06

Abstract

Hydrocoolingis a simple way to quickly lower the temperature of food until the material temperature near the storage temperature. In addition, food packaging treatment can inhibit the rate of weight loss and product quality. This study used a completely randomized design (CRD) which consisted of two factors. The first factor wasthe immersion time in the hydrocoolingprocess (without soaking, 1 minute immersion, and 2 minutes of immersion (immersion water temperature 5oC ± 1)) and the second factor wasthe type of plastic (Polypropylene (PP) plastic type and High-DensityPolyethylene (HDPE) plastic). Each experimental unit was repeated 3 times and all experimental units were stored in a refrigerator with a temperature of 10oC ± 1. The parameters observed were a) moisture content, b) weight loss, c) material hardness, d) color, and e) cooling rate. Observations were made for 8 days with data retrieval intervals for 2 days. During cold storage sweet corn undergoes many physical changes. These changes began to appear on the 6th day. On the 6th day, sweet corn stored in cold storage experienced physical changes, namely wilting, wrinkling, starting to pale, and brownish color appeared at the tip to the base of the surface of the sweet corn. On the 8th day sweet corn experienced a 57decrease in weight loss and moisture content in the treatment without hydrocoolingand without packaging, while the hydrocoolingtreatment (1 minute and 2 minutes) and packed (with Polypropylene (PP) plastic and High-DensityPolyethylene plastic (HDPE) also experienced a decrease in water content and weight loss but still had a high average value of moisture content and weight loss. The result of the decrease in moisture content and weight loss affected the hardness of sweet corn, color, and cooling rate. The best treatment combination was obtained in thehydrocoolingtreatment for 2 minutes with Polypropylene (H2P1) packaging with a weight loss value of 0.33%, hardness 34.20 N / mm2, color L 50.00, a 16.69, b 51.81, water content 74.167%, and a cooling 2.3982 oC / 30 minutes.
Co-Authors Bintang Madrini Gede Jaya Kusuma Putra I Nyoman Sucipta I Wayan Krispedana Ida Ayu Rina Pratiwi Pudja Ni Luh Putu Sarasulistian