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Jurnal BETA (Biosistem dan Teknik Pertanian)
Published by Universitas Udayana
ISSN : -     EISSN : 25023012     DOI : https://doi.org/10.24843/JBETA.2025.v13.i02
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Jurnal BETA (Biosistem dan Teknik Pertanian) memuat hasil penelitian di bidang teknik biosistem (biosystem engineering). Cakupan dari jurnal ini merentang dari aplikasi ilmu keteknikan untuk pertanian. Diantara bidang ilmu tersebut, yang menjadi fokus adalah Bidang Manajemen Keteknikan Pertanian, Teknologi Pascapanen khususnya produk Hortikultura, Rekayasa dan Ergonomika, Konservasi Sumber Daya Alam, serta khusus tentang aplikasi Instrumentasi dan Sistem kontrol dalam bidang pertanian.
Arjuna Subject : -
Articles 740 Documents
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Efek Penambahan Limbah Makanan terhadap C/N Ratio pada Pengomposan Limbah Kertas Ni Ketut Rai Wulandari; I. A. Gede Bintang Madrini; I Made Anom Sutrisna Wijaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 8 No 1 (2020): 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.2020.v08.i01.p13

Abstract

The composting is the one alternative to increase the value of waste and usability of organic waste. The purpose of this study was to determine the effect of the addition of food waste and paper waste on C/N ratio and to determine the mixtures ratio of the food waste and paper waste toward C/N ratio and the quality of compost in accordance to Indonesian National Standard (SNI) 19- 7030-2004. The ratio of materials used in this research was food waste and paper namely: 1:1, 1:2, 1:3 and 0:1, respectively. The composting was conducted in six of Tahiron New Garden Bag 2 used as a bioreactor in this research. The temperature and pH were collected every day for 60 days. The water content was observed every 4 days. The organic C levels (%) and Nitrogen levels (%) was observed in 7 days. The 1:1 material ratio showed two times of the thermophilic stage which occurred on the 14th and 34th days for 46 oC and respectivly 46.3oC. The material ratio of 1:2 and 1:3 was able to reach the mesophilic temperature while the 0: 1 treatment did not increase temperature. The C/N ratio before composting of the 1:1, 1:2, 1:3 and 0:1 material ratio were 24.44, 40.60, 52.06 and 71.81 respectively. While the C/N ratio after composting of the 1:1, 1:2, 1:3 and 0:1 material ratio were 12.06, 37.00, 42.85 and 104.84, respectively. The mixtures ratio of the food waste and paper waste in accordance with Indonesian National Standard (SNI) 19-7030-20014 was the 1:1 material ratio treatment which have a final moisture content of 35%, final temperature of 23.3 oC, final pH of 7.2, final C/N ratio of 12.6 and final organic matter of 53%.
Efisiensi Kinerja Traktor dengan Bajak Rotari untuk Pengolahan Tanah Tahap Pertama pada Subak Di Kabupaten Tabanan Fiqri Muhamad Hakim; I Wayan Tika; Pande Ketut Diah Kencana
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
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.2023.v11.i02.p14

Abstract

Performance efficiency is the ratio between actual working capacity and theoretical working capacity expressed in percent (%). The purpose of this study was to determine the efficiency of the performance of a rotary tractor for the first stage of tillage in subak in Tabanan Regency and become reference data for further research. The research method uses descriptive quantitative methods where data collection is carried out through surveys, interviews and direct measurements in the field which are presented descriptively. The specification of the rotary tractor used is a rotary tractor with a power of 10.5 hp and some limitations are applied such as the condition of the tractor is considered similar, the operator's ability is considered similar, the slope of the land is considered uniform, sufficient water for tillage and only the first stage of tillage. The parameters tested in this study were actual working capacity, theoretical working capacity, and efficiency of rotary tractor performance. The results showed the actual working capacity of 0.089 ha/hour, theoretical working capacity of 0.155 ha/hour, and performance efficiency of 57.091%
Pembuatan Pupuk Organik Cair (POC) Berbahan Sampah Buah-Buahan dan Sayuran pada Rasio Bahan dan Headspace yang Berbeda I Putu Yogi Krisnadi Rahardi; Ida Ayu Gede Bintang Madrini; I Made Anom Sutrisna Wijaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
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.2023.v11.i02.p15

Abstract

Composting liquid organic fertilizer, composting efficiency may be gauged using the variation in material volume with headspace. The purpose of this study is to ascertain how the ratio of materials to headspace affects the rate of composting and the quality of the POC that results, as well as to identify the ratio of materials to headspace that yields the best POC quality in accordance with the minimal technical POC requirements based here on Decision of the Minister of Agriculture of the Republic of Indonesia No. 261/KPTS/SR.310/M/4/2019. Composting uses an anaerobic system and the materials used are fruit and vegetable waste. The method used is a one-factor Completely Randomized Design.The factor used is the ratio of material and headspace, namely 1:5, 2:4, 3:3, 4:2, and 5:1. The five treatment were repeated 3 times to obtain 15 experimental units. The research parameters include the initial content of the material, total microbial bioactivator, temperature, pH, material height shrinkage, nitrogen, phosphorus, potassium, and C-organic content, C/N ratio, organic matter, EC, and total POC bacteria. Data obtained from observations were analyzed by ANOVA test and continued with Duncan's test. In general, the quality of the POC produced complies with the minimum technical requirements with POC temperature 29,3°C-29,8°C, POC pH 5,3-6,3, nitrogen content 2,01%-2,15%, phosphorus 2,02%-2,09%, potassium 2,03%-2,08%, C-organic 2,39%-3,69%, and total POC bacteria 5,31×107-3,12×109cfu/ml. The ratio of materials and headspace affect the rate of composting and the quality of the resulting POC. Treatment P2 (2:4) is the best treatment based on results of data analysis and parameters used.
Dinamika Suhu dan Kelembaban Udara pada Penyimpanan Kentang (Solanum tuberosum L.) Bibit Tipe Para-Para M. Ikram; Yohanes Setiyo; I Gusti Ketut Arya Arthawan
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
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.2023.v11.i02.p16 Abstract

Abstract

Farmers in Bali have not been able to produce good seeds due to failures at the storage stage and are still dependent on potato seeds from the G2-G4 group imported from outside. The aim of this study was to determine the dynamics of air temperature and humidity (RH) during the storage of potato seeds and the physical changes of potato seed tubers after storage. Parameters measured included temperature and humidity during storage of potatoes, analysis of mass and energy balances, calculation of respiration heat, heat for increasing the temperature of potatoes, heat for water evaporation, and heat lost to the environment with a simple mathematical model approach. The results showed that temperature tends to form a quadratic polynomial pattern, while RH tends to form a linear pattern. The temperature of the potato storage room was in the range of 29.50 ºC - 29.09 ºC and the RH was in the range of 73.00% - 81.80%. Respiration heat value varies between 470.26 - 491.30 Watts. The heat generated from the respiration process is 72 -143 watts, the heat to raise the temperature of the potato tubers around the potatoes is 2.02 Watts; 1.81 Watts; 3.80 Watts; 2.60 Watts; 10.70 Watts; and 15.20 Watts. The heat lost to the environment forms a linear pattern. Para-Para is capable of creating conditions for the storage and supply of oxygen that, for physical change, are almost non-existent.
Analisis Sistem Rantai Nilai Komoditas Stroberi Segar (Fragaria × ananassa L.) di Desa Candi Kuning Novel Pardosi; I Gst Ngr Apriadi Aviantara; I Wayan Widia
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 2 No 2 (2014): September
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.2014.v02.i02.p06

Abstract

The research aimed to know of the analysis of value chain in the commodity supply chain system of fresh strawberries that occurred in candi kuning village, to know the actors involved in agribusiness commodity strawberries has received the results section that corresponds to the activity in the business . This research was conducted by survey method . In this study, the data obtained in the form of qualitative and quantitative data were analyzed using analysis approach benefit cost ratio. The results of the analysis of the benefit cost ratio showed no difference in the level of feasibility acquired by businesses in the supply chain of commodity strawberries business in Candi Kuning village. Generally all businesses involved in the commodity business activity chain strawberries have a decent profit . The greatest gains received by businesses operators a retail 2:17 benefit most small businesses received by farmers in the amount of 1:27 . Among the three kinds of characteristics of farmers, farmers are able to sell directly to the end consumer commodity earn greater profits in the amount of 1.90 . With the result of the sale to the consumer and the merchant costs incurred on farmers and collectors, then the total benefit cost ratio in the businesses of fresh strawberries in the village of Candi Kuning is at 1:36 in other words activities strawberry growers and collectors strawberries and retailers in the Village Candi Kuning is economic worthy to be done.
Kajian Proses Fermentasi Urin Sapi dengan Beberapa Model Diffuser Ni Luh Trimayanti; Yohanes Setiyo; I Made Anom Sutrisna Wijaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
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.2023.v11.i02.p17

Abstract

Cow urine has the potential to become biourin. This study aims to determine the effect of the type of diffuser on the quality of biourin, as well as to determine the best type of diffuser during the fermentation process. This study used a completely randomized design consisting of 5 treatments and 3 replications. Each treatment contained 10 liters of urine, 2% nitrifying bacteria, and 2% molasses. The treatment was carried out without aeration, treatment using aeration without a diffuser, treatment using a fine bubble diffuser, treatment using a coarse bubble diffuser, and treatment using an aerated stone diffuser. This fermentation was carried out for 20 days with measurements every 5 days. Parameters observed were temperature, pH, TDS, EC, C-Organic, N-Total, and C/N Ratio during the fermentation process. The results of the study showed that the use of several types of diffusers had a significant effect on the process of fermenting cow urine. The fermentation process without using a diffuser showed that as the fermentation time increased, the pH value decreased from 7.72 to 7.54. On the 20th day of bio-urine fermentation, the highest Biochemical Oxygen Demand value was shown by the treatment using a fine bubble diffuser with a value of 9.2 mg/l. Of the five urine fermentation treatments, only fermentation with a diffuser met standard No.70/Permentan/SR.140/10/2011. Treatment with a type of fine bubble diffuser is the best treatment.
Modifikasi Mesin Perajang Daun Pandan Berbasis Antropometri untuk Meningkatkan Produktivitas Kerja Pasek Made Sada Wedantara; I Nyoman Sucipta; I Putu Gede Budi Sanjaya
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.p06

Abstract

This study aimed to improve the efficiency and ergonomics of the pandan cutting machine, which currently causes user complaints such as back, waist, and arm pain. Anthropometric-based modifications were made to the machine’s hopper and engine, using data from 14 adult operators. The modified machine dimensions were: house knife 69.5 × 40 × 6.19 cm, pillow block 10 × 6.3 × 3.9 cm, AS shaft, platen, and cutting knife 38 × 35 × 38 cm, pulley, V-belt, and electric drive 50 × 21 × 20 cm, machine frame 63.5 × 50.4 × 77.5 cm, frame height and silencer rubber 10 × 5 × 35 cm, and body cover 40 × 40 × 62.8 cm. User complaints measured by the Nordic Body Map scored 1.22, categorized as “not sick.” Machine productivity was 0.0014 kg pulse per minute, calculated from average chopping data, working time, and work pulse.
Pengaruh Kadar Air Terhadap Proses Pengomposan Jerami Dicampur Kotoran Sapi I Made Pila Antara Putra; Sumiyati; Yohanes Setiyo
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.p09

Abstract

This study aimed to determine the effect of water content on the composting process of rice straw and cow dung and to identify the optimal water content for faster composting. Five treatments were applied: P1 (40% water), P2 (45% water), P3 (50% water), P4 (55% water), and P5 (60% water), with 35 kg of material per treatment and a rice straw to cow dung ratio of 3:4. Observed parameters included temperature, water content, yield, pH, nitrogen, carbon, and C/N ratio. The highest peak temperature occurred in the 60% water treatment at 49.8°C, while the lowest peak was in the 40% treatment at 48.4°C. Initial pH ranged from 6.4–6.6 and increased to 6.9–7.2 at the end of composting. The C/N ratio for all treatments met SNI standards, ranging from 18.60–19.01. The resulting compost quality from all treatments complied with SNI 19-7030-2004 standards.
Perilaku Pindah Panas yang Terjadi pada Berbagai Kemasan Kentang Konsumsi (Solanum tuberosum L.) selama Penyimpanan Suhu Ruang Ni Putu Budisetiari; Ida Ayu Rina Pratiwi Pudja; Ida Bagus Putu Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
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.2023.v11.i02.p19

Abstract

This research was conducted to determine heat transfer, quality changes, and to find out the best results when storing potatoes at room temperature with different packaging. This study used a randomized block design (RAK) with 2 factors: storage time (5 days, 10 days, and 15 days) and packaging (cardboard, wood, and styrofoam). The packaging used is 20 cm x 15 cm x 15 cm. Measurements of heat transfer, temperature, and humidity will be carried out every 8 hours. Other parameter measurements such as moisture content, weight loss, color, and texture will be tested every 5 days. The results of the study showed that the higher the day the heat transfer reached 34.90 with the type of wooden kotak packaging, while for the observation of the temperature parameter the highest value reached 28.90 ºC on the Styrofoam packaging type, for the humidity parameter the highest value reached 92, 58% in the type of cardboard kotak packaging, the highest water content occurred in the cardboard kotak packaging with a moisture content value of 88.01%, the highest weight loss occurred in the type of wooden packaging 3.81%, the color of potatoes with the highest value occurred in the Styrofoam packaging type with a value of color 47.79 and the highest texture occurred in the packaging 68.45 gf, from these results the packaging that is able to maintain the quality of potatoes well is the type of wooden kotak packaging.
Analisis Rasio Prestasi Manajemen (RPM) Distribusi Air Irigasi pada Subak di DAS Ho Kori Ardy Rahayu; I Wayan Tika; Ida Bagus Putu Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
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.2023.v11.i02.p20

Abstract

Irrigation is defined as a means of utilizing water resources. In Bali, irrigation management in agriculture is carried out by forming an organization called Subak. One of the characteristics of subak is that its members have the same water source and receive a fair distribution of water from that source. Regulation is very necessary for dividing and distributing irrigation water so that the amount of water given to the land is in accordance with the needs needed by the plant. However, the level provision of water irrigation is still not appropriate for each subak. Thus, it is necessary to evaluate the performance of irrigation networks using MPR analysis. MPR analysis was carried out by measuring the available debit, using a qualitative data analysis approach, and by calculating irrigation water needed, using the average climatological data for the last ten years, from 2012 - 2021, obtain from BMKG Region III Denpasar and data from interview pekaseh. The results of the analysis show that irrigation performance with the good category is dominated by subak in DI Aya, with a distribution of MPR values of 0,77 – 1,19. Meanwhile, the very less category is dominated by subak in DI Gadungan Lambuk, with a distribution MPR values of 0,00 – 0,36. During the dry season, further downstream, the performance irrigation network is getting less and less. In order for irrigation performance to always be in a good category, the irrigation water distribution strategy for subtasks in DAS Ho can be carried out by rotating the distribution of irrigation water. If it doesn’t work, it is necessary to repair the problematic irrigation networks.

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