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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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Pengaruh Ketebalan Plastik Polietilen Densitas Rendah sebagai Bahan Kemasan terhadap Mutu Daun Seledri (Apium Gravelens L.) Selama Penyimpanan Dingin I Kadek Puja Harta Hadi; Ida Ayu Rina Pratiwi Pudja; Gede Arda
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 8 No 2 (2020): 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.2020.v08.i02.p07

Abstract

Using the right thickness of low-density polyethylene (LDPE) packaging can maintain the quality of celery and also can extend their storage time. The purpose of this study was to determine the effect of LDPE plastic thickness as a packaging material on the quality of celery during storage at low temperature and to determine which thickness level of LDPE plastic can maintain the best quality celery. Experimentalresearch was used in this study. In this study, Completely Randomized Design (RAL) was used as experimental design. The thickness level that used for this study were 0.02 mm; 0.03 mm; 0.04 mm; 0.05 mm, 0.06 mm. Observations were made once every 3 days and each treatment was repeated 3 times at a storage temperature of 10 ± 20C for 18 days. The parameters in this study were weight loss, water content, color, texture, freshness, and the scent. The results of the analysis of variance showed that the thickness level of LDPE plastic as packaging material for celery had a very significant effect (P˂0.01) towards the research parameters. The best treatment was obtained from 0.04 mm size with a weight loss of 4.64%, 18.97 on color, a texture of 0.0455 N, a water content of 90.22%, a freshness level of 4.87 and the scent of 5.00. The conclusion that the thickness level at 0.04mm of LDPE plastic is the best solution to maintain quality of celery and reached 18 days of storage time
Rancang Bangun Sistem Pemantau Dan Pengendali Iklim Mikro Greenhouse Berbasis Android I Gusti Ayu Nadya Prasita Pasimpangan; I Wayan Widia; I Made Anom S. Wijaya; I Putu Gede Budisanjaya
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.p05

Abstract

As the growth of development technology in agriculture, more automation technologies are used especially those applied to greenhouses. One of the uses of technology is automatic mircroclimate monitoring and controlling using sensor. Microclimate monitoringand controlling is important to maintain the plant’s environment so that it can grow optimally. The mircroclimates that were monitored and controlled in this research weretemperature, air humidity, and light intensity. The purpose of this research wastobuild amonitoring and controlling system for temperature, air humidy, dan light intensity in the greenhouse in an android smartphone connected to the internet. Arduino Mega 2560 wasused in this study as a microcontroller connected to DHT22 sensor and BH1750 sensor wereused to measure the mircroclimate automatically, ESP8266 as the wifi modul to link arduino and android via internet, as well as relayto control fan exhaust, LED grow light, and misting pumps as output control. This system wasequipped with an input setting point so user can adjust each microclimate according to the plant needs and control the output device automatically. The result of this research is a monitoring and controlling system in a greenhouse prototype with a length of 80 cm, 40 cm high, and 40 cm wide using the DHT22 sensors with an error of 2.2% for temperature measurement, 3,86% for air humidity measurement, and the BH1750 sensor which has been calibrated with 3,7% error for light intensity.The system can work properly where mircroclimare conditions can be monitored and controlled automatically from the application.
Analisis PeramalanProduksi Panen Pisang Cavendish Menggunakan Exponential Smoothingke Product Sunpride dan Bali Fresh di PT. Nusantara Segar Abadi Bali I Nyoman Galih Oki Putra; I Gusti Ngurah Apriadi; Ida Bagus Putu Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 12 No 2 (2024): 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.2024.v12.i02.p04

Abstract

PT. Nusantara Segar Abadi Bali was established in 2019. PT. NSA BALI has 2 products produced from cavendish bananas, namely Cavendish Sunpride Banana and Cavendish Bali Fresh Banana. Supply from the harvest is expected to meet the monthly production target of PT. NSA BALI. This r esearch is conducted to get the right forecas ting method to meet the needs of production. In this study using two modeling methods, namely Single Exponential Smoothing and Triple Exponential Smoothing methods. For this study, the data used is secondary data, namely data from January 2019 to Juli 2023 . In this study using model validation, namely MAD, MSE and MAPE. It is known that this study obtained forecasting validation results, namely MAD 17%, MSE 58% MAPE 24% in the Single Exponential Smoothing method, while the Triple Exponential Smoothing metho d obtained the number of forecasting validations, namely MAD 43%, MSE 11% MAPE 54%. In the Single Exponential Smoothing method, the number of forecasts can meet the production target in November 2022 to Juli 2023, while in the Triple Exponential Smoothing method the time that can meet the number of production targets is in September 2022 to Juli 2023
Pengaruh Suhu dan Waktu Pengeringan terhadap Karakteristik Kimia serta Sensori Teh Daun Bambu Tabah (Gigantochloa nigrociliata BUSE-KURZ). I Kadek Wirawan; Pande Ketut Diah Kencana; I Made Supartha Utama
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 8 No 2 (2020): 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.2020.v08.i02.p08

Abstract

This study aimd to determine the effect of temperature and drying time on the chemical and sensory characteristics of Tabah bamboo leaf tea. This study was designed using a Completely Randomized Design (CRD) with two factors, namely the drying temperature factor (50oC and60oC) and the drying time factor (1 hour, 2 hours, and 3 hours). The treatment was repeated three times to obtain 18 experimental units. The parameters observed were water content, pH, totalacid, total phenol, color, aroma, taste, and overall acceptance tested organoleptically. The results showed that the interaction of temperature and duration of drying of Tabah bamboo tea leaves had a significantly different effect on water content, pH, total acid, total phenol, color, overall reception, but did not have a significantly different effect on aroma and taste. The best treatment was water content 6.881%, pH 6.6, total acid 0.73%, total phenol 84.01 mg/100g, color 4.33, aroma 4.47, taste 4.27 and overall acceptance 4.47.
Pengaruh Konsentrasi Dekstrin dan Tween 80 (Polyoxyethylene Sorbitan Monooleat) pada Proses Pengeringan Gel Daun Lidah Buaya (Aloe barbadensis Miller) dengan Cabinet Dryer. I Wayan Adi Saputra; I. A. Rina Pratiwi P; I.B.P Gunadnya Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 2 (2016): 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/j.beta.2016.v04.i02.p02

Abstract

This study was conducted to determine the effect of the concentration of dextrin and tween 80 in the drying process by using dryer cabinet and determine the concentration of dextrin and tween 80 which can speed up the drying process of aloe vera gel. This study used a Randomized Complete Design (RBD) with 2 factors. The first factor was the concentration of dextrin (10%, 14%, 18%, 22%) and the second factor was the concentration of tween 80 (0.3%, 0.4%, 0.5%) with the drying temperature of 70°C. The experiment was repeated three times. Observations were made every 2 hours until the sample weight did not decrease. Variables which observed were rate of drying, whiteness, yield, and pH of flour aloe vera. The results showed that concentrations of dextrin and tween 80 significantly affected water content, the degree of whiteness of the flour was affected by concentrations of dextrin. Treatment interaction between dextrin concentration and tween 80 did not significantly affect all parameters observed. The addition of dextrin will slow the drying process, on the contrary the addition of tween 80 will speed up the drying process. The highest yield at amount of 10.99% was obtained from the treatment interaction of 22% dextrin with 0.3% tween 80. The degree of acidity (pH) of the flour at 4.00 which was the highest value of pH was yielded form the treatment interaction of 10% dextrin with 0.5% tween 80. In this study, the best treatment resulting aloe vera flour that approaching the standards of quality of Terry Laboratories was a treatment interaction of 22% dextrin with 0.3% tween 80. The flour had a water content of 8.68%, the degree of whiteness 50.51, yield 10.99%, and the degree of acidity (pH) 3.65.
Pengaruh Penggunaan Jenis Mulsa terhadap Sifat Fisik Tanah dan Laju Pertumbuhan Tanaman Tomat (Lycopersicum esculentum L.) I Kadek Dwi Adi Saputra; I Wayan Tika; Ni Luh Yulianti
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 9 No 1 (2021): 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.2021.v09.i01.p01

Abstract

Soil processing intensively without paying attention to factors which affect it such as the lack of nutrients, unbalance fertilization decreases physical quality of the soil. Therefore, soil processing is necessary to the growing condition of the tomato plants and improve nutrient availability for plants. The aims of the research are to determine the changes in soil physical properties due to the use of mulch types in line with the age of tomato plants and determine the effect of the use of mulch types on the rate of growth of tomato plants. This research is conducted with a completely randomized design with treatment without mulch, silver plastic mulch, black plastic mulch, transparent UV plastic mulch, and rice straw mulch. Each handling 15 times. The results show that the ground water content of 2 week after planting was 13-35%, 4 week after planting 20-42%, 6 week after planting 23-44%, 8 week after planting 27-51%, 10 week after planting 26-53%, 12 week after planting 32-63%. Average soil organic matter 1.16% with low category. Average permeability of land is 4.13 cm/hour in the slow to moderate category. Treatment without mulch significantly affected to the soil porosity with an average value of 48% in the less grade. The average value of the number of leaves in the silver plastic mulch treatment 122.89 strands and 124.83 strands of rice straw. The dry weight value of tomato plants in the treatment of rice straw mulch 205.87 grams and in the treatment of transparent UV plastic mulch 118.33 gram.
PERANCANGAN SISTEM IRIGASI OTOMATIS DENGAN SENSOR RESISTIF BERBASIS KADAR AIR TANAH PADA TANAMAN RUKOLA (Eruca sativa) I Putu Agus Sumi Antara; I Wayan Tika; I Putu Gede Budisanjaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): 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.2016.v04.i01.p07

Abstract

Rukola (Eruca sativa) is a horticultural plants originating from the Mediterranean with a high of vitamins such as A, B complex, C, and K. Rukola can be growed well at low ambient temperatures with soil moisture content between 20% - 40%. Therefore, irrigation control system is required to obtain at the appropriate moisture content for rukola plants. The objective of this research was to build an automatic irrigation system with the resistive sensor based on soil moisture, that can perform automatic irrigation accordance optimal water content in rukola cultivation. The control system in this research was created using the multiplexing control system with resistive AC stainless steel sensors. The sensors was read the resistive of soil moisture that calibrated into a percent (%) of water content and displayed on the display per second. The output of the pump is controlled by limits of water content that programmed by the microcontroller AVR AT Mega 8535. Calibration control system conducted at field capacity and permanent wilting point. Automatic irrigation control system was able to work well with the limits defined soil moisture is 20% lower limit and 39% upper limit. The first testing results of control system I have R2 0.8462 with RMSE values 0.02 and control system II have R2 0.8603 with RMSE value 0.02. The second test of control system I have R2 0.8896 with RMSE value 0.01 and control system II have R2 0.9121 with RMSE value 0.02. If R2 that exceeds the value of 0.7 and RMSE (Root Mean Square Error) ≤ 0.1, then the performance of the automatic irrigation control system is working accurately.
Penentuan Nilai Optimum Konsentrasi KMnO4dan Minyak Jarak pada Kemasan Aktif Bioplastik Ni Kadek Tia Putri Ana; Ni Luh Yulianti; I Putu Surya Wirawan
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 12 No 2 (2024): 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.2024.v12.i02.p05

Abstract

Active packaging is an innovative packaging concept to maintain quality and increase product shelf life where active compounds added to the packaging can interact with food products and the environment, so research on active packaging is worth dev eloping. This study aims to produce the most optimum combination of KMnO 4 concentration and castor oil concentration to produce bioplastic active packaging characteristics that are in accordance with SNI Standards and International standards, and to determ ine the mathematical model of tensile strength response, elongation, elasticity, using Response Surface Methodology (RSM). Data was processed using Design Expert ® 12 software. The results of testing and analysis obtained a quadratic model on the observed responses. KMnO 4 concentration of 1.75% and castor oil concentration of 1% was the optimum combination selected. The verification test results showed the actual value of tensile strength 18.56 MPa, elongation 0.02 % modulus young 659.15 MPa. The response o f the combination of KMnO4 concentration and optimum castor oil concentration has a desirability value of 0 . 751% indicating that 75.1% of the expected response criteria can be met.
Kualitas Air pada Irigasi Subak di Bali I Gede Dumia Saputra; Sumiyati Sumiyati; I Nyoman Sucipta
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 8 No 2 (2020): 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.2020.v08.i02.p09

Abstract

Irrigation water is very influential cultivative in subak. The condition of pollution in irrigation water needs to be measured in order to know the water quality for subak. This research determine to the quality of water irrigation for subak’s in Bali. This research was conducted on April 8th until May 8th 2019 at 9 subak in 3 (three) regency in Bali. The water sample was taken at Subak Air Sumbul, Subak Yeh Anakan and Subak Air Satang in Jembrana regency, Subak Guama, Subak Selan Bawak and Subak Jatiluwih in Tabanan regency, Subak Tegal Kauh Selat, Subak Tohpati and Subak Bugbug in Karangasem regency. This study used survey method and labolatory analyzed. The result of research showed that water irrigation quality obtained compared with the water quality standard based on Bali Governor Regulation Number 16 of 2016 concerning water standard quality. The water sample is done at two points on each subak, that is the inlet and outlet channels. Parameters of water quality is BOD, COD, EC (Electrical Conductivity), pH, Nitrite (NO2), Phosphate (PO4) and TDS (Total Dissolved Solids). The highest test result are shown by the parameters: BOD parameter the value is 8,078 mg/L at Subak Selat inlet channel, COD parameter showthe value is 21,735 mg/L at Subak Selat inlet channel. EC parameter show the value is 308 µmhos/cm at Subak Guama and Subak Selan Bawak inlet channel. pH parameter show the value is 8,40 at Subak Bugbug inlet channel. Nitrite parameter show the value is 2,606 mg/L at Subak Guama outlet channel. Phosphate parameter show the value is 0,214 mg/L at Subak Guama inlet channel. TDS parameter show the value is 238 mg/L in outlet and innet channel of Subak Guama. Overall the result still in accordance with group IV water quality standar for water irrigation.
Model Sistem Dinamik Stok Beras untuk Mendukung Ketahanan Pangan Provinsi Bali I Gede Yudi Pradnyana; I Wayan Widia; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 9 No 1 (2021): 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.2021.v09.i01.p02

Abstract

Limited rice production capacity and increased rice consumption make food insecurity conditions in terms of insufficient rice stocks inevitable. The complexity of rice problems in Bali is not only related to fulfillment for local people but also for tourists. This study aims to analyze the dynamics of the causal-loop relationship of variables that affect the state of production, consumption, and rice stock in the Bali Province using a systems approach and the application of dynamic system modeling techniques. In this study the Causal-Loop Diagram (CLD) of the rice stock system is formulated on the basis of the interrelationship of the production sub-system, the consumption sub-system and the government rice reserve sub-system which involves the relationship of 24 variables to produce a model output that is the projected rice stock in Bali for the period of 2021-2030. Validation of the simulation results against the actual data in the model using the RMSPE method shows a value of 4,7062 percent (<5 percent), this means that the model is said to be very valid. Model simulation results based on existing conditions (scenario 0), show that rice stocks begin to decline since 2018 with an average decline rate of 19,76 percent/year. The rice stock deficit begin in 2026 at 36.458 tons and continue in 2030 at 448.162 tons. This condition can be overcome if the provincial government of Bali implements an effective policy with a policy option that is to increase productivity of rice yields with a minimum target of 6,7148 ton/hectare (scenario 1 optimistic) and or an increase in cropping intensity with a minimum target of 2,0622 (scenario 3 optimistic).

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