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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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Studi Kasus Tentang Pengolahan Tanah Dengan Bajak Singkal Dan Rotary Terhadap Sifat Fisik Tanah Pada Budidaya Tanaman Padi Sawah Ade Purbayuda Manik; I Wayan Tika; I Gusti Ngurah Apriadi Aviantara
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 5 No 1 (2017): 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.2017.v05.i01.p08

Abstract

This study was conducted to compare some soil physical properties in two different rotary. The variables measured in this study are: texture, soil porosity, density, volume weight, and productivity. The results showed that the treatment using ordinary plow and rotary plow texture hisher the same texture class silty clay loam. The treatment using the rotary plow has a porosity namely than rotary plow. The width of each sampling area is 20- 40 are. The mass volume on ordinary plow was higher than the rotary plow. The productivity of ordinary plow treatment has higher than rotary plow. The productivity of the ordinary plow treatment were 6,9 ton/ha, 7,8 ton/ha and 8,8 ton/ha for red rice, cigeulis variety and qluti nous rice respectively. The productivity of the rotary plow treatment were 6,6, 6 and 6,8 ton/ha for red rice, cigeulis variety and qluti nous rice.
Analisis Persentase Kelebihan Air Irigasi pada Subak DAS Ho Saat Musim Hujan Dian Dwi Cahyo Pangestu; I Wayan Tika; I.B. Putu Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 9 No 2 (2021): 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.2021.v09.i02.p03

Abstract

The excess of water availability is caused by excessive water discharge during the rainy season, and it doesn’t distribute evenly between upstream and downstream, where upstream water availability tends to be oversupply and downstream is deficient. With such conditions, research is needed on excess irrigation water during the rainy season in order to perform an optimal water management in Ho Watershed. Research was conducted to determine the percentage of excess irrigation water available in each subak and determine irrigation water management techniques to be proportionate to each subak section. The acquisition of primary data is done by interview, observation, and measurement methods, while secondary data is obtained from (BMKG) Region III Denpasar. The data obtained was further analyzed with CROPWAT 8.0 to find the percentage of excess irrigation water that occurs during the rainy season and to determine the distribution portion of irrigation water. The results showed the percentage of excess irrigation water in the Ho watershed during the rainy season averaged 207,31%, middle 417,78%, downstream 239,05%. Water distribution management techniques in the upstream, middle, downstream during the rainy season so that the excess is proportional by changing the initial discharge in accordance with the approximation discharge.
Kajian Kelayakan Finansial Alat Pengusir Burung Tanaman Padi Berbasis Sinar Laser Hyacintha Dinda Septiana Putri; I Wayan Widia; I Gusti Ketut Arya Arthawan
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.p15

Abstract

Bird s attack of rice plants can cause losses for farmers by reducing rice production. To overcome this problem, a laser light - based rice bird repelle r was developed. This repeller consists of a laser transmitter unit , frame unit , control and remote - control unit , and ener gy generator unit designed into one so that it can function as expected. Technically, this repeller can potentially reduce damage from bird s attack , but more information is needed regarding its financial feasibility. Th is study aimed to assess the economic feasibility of a laser - based rice bird repelle r . The data used in this study include investment costs, fixed costs, operational costs, reduction of losses, reduction of labor, residual value, and depreciation value. The assumptions applied in this study are that the a nnual fixed costs are the same throughout the analysis period, the economic life is five years, and the analysis interest rate is 6% /year. There are four criteria used to assess financial feasibility, namely Net Present Value (NPV), Internal Rate of Return (IRR), Payback Period, and Benefit Cost Ratio (BCR). The results show that the laser - based bird repelle r can be declared financially feasible, as indicated by an NPV value of IDR 10.381.941,88 , an IRR value of 23,91%, a Payback Period of 2,83 years and a BCR of 1 , 21 . Based on the sensitivity analysis results, it shows that this repeller remains financially not fe asible under economic conditions of declining revenue and simultaneous increases in expenses by 10%, 20%, and 30% annually , and it indicates that changes in interest rates have the most significant impact on the NPV value
Pendugaan Intensitas Serangan Penyakit BLB (Bacterial Leaf Blight) pada Tanaman Padi melalui Pendekatan Citra Multispektral Gusti Bagus Eka Chandra; I Made Anom S. Wijaya; Yohanes Setiyo
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.p18

Abstract

Bacterial Leaf Blight (BLB) is a disease that is dangerous for rice plants. This disease can attack in every phase of growth. Calculation of BLB disease attack intensity is currently still used manually method. Technology development is needed in estimating the intensity of BLB disease through multispectral imagery. This study aims (1) to get the best correlation value between the intensity of BLB disease attack with multispectral image parameters (2) to get the equation for estimating the intensity of BLB based on multispectral images parameter. Drone DJI Inspire 1 with a multispectral camera is used to captured the paddy field. The captured images was processed using Agisoft Photoscan and QGIS 3.8 software. Based on the results of the acquisition, multispectral images produce red, NIR, green, red edge, RGB band images which were then transformed into NDVI, EVI, and NDRE images. Of the threemultispectral image parameters, NDVI values have a stronger correlation level with a determination coefficient of 97.5% and produce the following linear equation y = -419.6 + 169.3. In calculating the NDVI parameter error value has the lowest error value compared to the EVI and NDRE parameters which is 4.64% with an accuracy estimate of 95.36%. Multispectral imagery can be used in estimating the intensity of BLB disease attacks in rice plants because it produces a very strong correlation value, and high estimation accuracy with a low error value does not exceed 10%.
Pengaruh Pelapisan Emulsi Minyak Wijen dan Minyak Sereh terhadap Mutu dan MasaSimpan Buah Jeruk Siam (Citrus nobilis Lour) Andri Frans Kalvin Gurning; I Made Supartha Utama; Ni Luh Yulianti
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 7 No 2 (2019): 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.2019.v07.i13

Abstract

The purpose of this research is knowing the influence of different consentration mixture between sesame and citronella oil in water as coating material on the quality of citrus fruits during storage at room temperature. Consentration sesame oil emulsion varied 0%, 0.5%, and 1% in citronella oil combination 0%, 0.5%, 1% and 1.5%. The additional ingredients used to make emulsions were 1% of tween 80, 0.5% oleic acid, and 3% alcohol. Untreatment control fruit was also prepared for comparison. The experiment was conducted using a Completely Randomized Design (CRD) with three replications. The results showed that the treatment of sesame and citronella oil significantly affected the quality and storage period of citrus fruits. The combined concentration of 0.5% sesame oil and 0.5% citronella oil provides the best results which can reduce weight loss, decay damage, pH alteration and total dissolved solids of fruit juice, and fruit hardness.
Efisiensi Kinerja Traktor Singkal dan Traktor Rotari pada Pengolahan Tanah di Subak I Wayan Tika; Sumiyati; Ni Nyoman Sulastri; Ida Ayu Gede Bintang Madrini; Mentari Kinasih
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 1 (2023): 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.2023.v11.i01.p02

Abstract

Before Subak farmers were familiar with tractors, land preparation was carried out using hoes or single-handed plows pulled by cattle. Land preparation with a tractor equipped with a complementary or rotary plow cannot be avoided in cases of overlap of processing results so that the processed soil results become inefficient. The overlapping results of the processing can be seen from the differences in the results of the processed soil. Based on these conditions, it is necessary to study the efficiency of tillage in Subak using single-axle tractors and rotary tractors in the first stage of tillage. Tractor work efficiency is measured based on a comparison between theoretical work and real work. Theoretical work is measured based on the width of the complement of the tiller, both short and rotary plows, and the average speed of the tractor's advance when cultivating the land. Real work is measured based on real work results in the field, namely the area ofland that has been successfully processed within a certain time span. Real work data was also confirmed based on the results of discussions with several tractor operators. From the results of the data analysis, it was obtained that the work efficiency of the short tractor was 77.3% and that of the rotary tractor was 55.2%.
Pengaruh Variasi Ukuran Partikel dan Persentase Perekat terhadap Karakteristik Briket Kulit Kopi Robusta (Coffea canephora) Dea Margareta Laheba; Ni Luh Yulianti; Ida Ayu Gede Bintang Madrini
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.p16

Abstract

Coffee is a very potential raw material when utilized in the form of solid fuel. Coffee husk is classified as an agricultural waste and its processing is made into artificial solid fuel used to replace alternative energy s ources expressed as briquettes. Th e research objectives expected in this study are to get the effect of variations in the particle size of raw materials and the percentage that glues well to the characteristics of the briquettes created, and to get the tre atment that produces briquettes wi th the best characteristics according to SNI. The experimental design in this research uses factorial RAK through 2 factors consisting of particle size with 3 levels (S1: 30 mesh, S2: 40 mesh, S3: 60 mesh) and the second f actor is the percentage of adhesiv e with 3 levels (L1: 30%, L2: 35%, L3: 40%). The combined design of the research trial through 2 trials obtained 18 trial units. The parameters observed in this research are water content, ash content, compressive strength , mass density, volatile matter, b ound carbon and combustion speed. The results showed that the interaction between particle size and percentage of coffee skin briquette adhesive contributed significantly to the quality parameters of the briquettes created . T he treatment of briquettes with a particle size of 60 mesh and a percentage of adhesive of 40% (S3L3) was declared the treatment that created the best quality briquettes. The briquettes from the S3L3 treatment had a moisture content of 4.43% ( bb ) , ash co nte nt of 4.69%, compressive strength of 202.81 kgf/cm 2 , mass density of 0.64 g/cm 3 , volatile matter of 53.68%, bound carbon value of 51.01%, and burning rate of 0.032 g/min
Peramalan Penjualan Rebung Bambu Betung (Dendrocalamus asper) Dengan Menggunakan Metode Triple Exponential Smoothing Ni Putu Murtini; I Gst Ngr Apriadi Aviantara; Ida Bagus Putu Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 9 No 2 (2021): 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.2021.v09.i02.p04

Abstract

Betung bamboo shoots (Dendrocalamus asper) is one of the processed fresh products sold at Tiara Dewata Supermarket, where the processed products are divided into three, namely raw bamboo shoots, chopped bamboo shoots, and ordinary bamboo shoots. The shelf life of bamboo shoots is very short, only 1-3 days. Furthermore, the monthly sales for these three fresh products fluctuate and it is difficult to predict the trend. Therefore, a forecasting method is needed in order to minimize the losses that will occur. The purpose of this study was to find the best alpha value that can be used to obtain the best time series forecasting data for the next one year for the three types of Betung bamboo shoots using the TriplemExponential Smoothing method. The data used in this study is the actual sales data of the three processed bamboo bamboo shoots from March 2019 - May 2020. The best alpha value that can be used for forecasting is the calculation of time series data with an alpha value of 0.1 - 0.9 which has a value the smallest error, where alpha 0.4 in raw shoots with an error value of MSE 10.308, RSME 3.287, MAPE 19%, alpha 0.4 in chopped bamboo shoots with an error value of MSE 113.809, RMSE 10.688, MAPE 5%, and alpha 0,4 on ordinary shoots with an error value of MSE 511,902, RMSE 22,625, MAPE 4%. From the calculation using the alpha value, it can be concluded that the triple exponential smoothing method with alpha 0.4 is used to predict the sales time series data of the three processed Betung bamboo shoots from the period June 2020 - May 2021.
Pengaruh Konsentrasi Asap Cair Batang Bambu Tabah (Gigantochloa nigrociliata BUSE-KURZ) Terhadap Karakteristik Ikan Lele (Clarias Sp) Asap I Ketut Agus Sandi Andika; Pande Ketut Diah Kencana; Ida Bagus Putu Gunadnya
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.p19

Abstract

Catfish is a health food that contains good nutritional value. It is therefore important to find methods to conserve these fish to increase their consumption. Liquid smoke of stoic bamboo stems can be used as a method for making catfish processed products. The purpose of this study was to determine the effect of cooking concentration and temperature on the characteristics of smoked catfish in a bamboo stick liquidsmoke solution. And also to find out the best concentration and temperature for the best organoleptic quality of smoked catfish dissolved in a stoic bamboo liquid smoke solution. The method of this research is to use a factorial completely randomized design with two factors. The first factor is the concentration of liquid smoke, namely from 1%, 2%, and 3%. The second is cooking temperature, which is from 60oC, 80oC, and 100oC. The best combination is bamboo concentration of 3% and a heating temperature of 100oC, heating is done in 4 hours and produces a pH value of 5.61, a moisture content of 56.78%, an ash content of 2.17%, a protein content of 13.46%, a fat content 5.55%, Color 4.67 (golden brown), Aroma 4.80 (aroma enough) Taste 4.93 (testeful), Texture 4.53 (solid).
Efek Daya Lampu Sinar UV C dan Lama Penyinaran terhadap Perubahan pH dan Total Padatan Terlarut Nira Aren Selama Penyimpanan Hary Kurniawan; Murad; Sukmawaty; Ansar; Rahmat Sabani; Kurniawan Yuniarto
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.p20

Abstract

This study aims to determine the effect of ultraviolet light (UV-C) and irradiation duration on changes in pH and total dissolved solids on palm sugar during storage. The study was conducted using the treatment of UV-C lamp power and exposure time. The parameters measured were pH, and total dissolved solids and the measurements were repeated three times. The results showed that palm sugar palm juice treated with UV-C had a lower pH change rate than controls. The higher the power of the UV-C lamp used was able to retard the rate of change in the sap of the palm sugar. Turbidity, foaming, organic acid content and substances that are suspended in palm sugar are presumed to be a longstanding factor of irradiating ineffectiveness due to low UV light transmission. The effect of UV-C lamp power and prolonged irradiation is known to be able to maintain the stability of the total content of dissolved solids on palm sap

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