cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Sri Handayani Nofiyanti
Contact Email
handayaninofiyanti@unud.ac.id
Phone
+6281339409979
Journal Mail Official
jurnalbetatep@unud.ac.id
Editorial Address
Jl. Raya Kampus Unud No.2013, Jimbaran, Kec. Kuta Sel., Kabupaten Badung, Bali 80361
Location
Kota denpasar,
Bali
INDONESIA
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
 42   43   44   45   46 
Penggunaan Beberapa Model Peramalan (Forecasting) untuk Produksi Gula Kristal Putih di PT. Perkebunan Nusantara X Immanuel Damanik; Ida Bagus Putu Gunadya; I Gusti Ngurah Apriadi Aviantara
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.p03

Abstract

Forecasting is the process of making a future prediction based on the present and past data using trend analysis. The purpose of this study was(1) to know historical pattern of refined sugar production, (2) to know what are the forecasting models that be used for prediction, (3) to get the best forecasting model by using accuracy test. This study use secondary data from PT Perkebunan Nusantara X and processing data by using Microsoft Excel. Based on analysis results exponential smoothing by using α = 0.8 is the best model. As comparison by using moving average with 2 period and double exponential smoothing with α = 0.6. The accuracy test of exponential smoothing α = 0.8 showing with value MAD = 2, MSE = 9, and MAPE = 36%. On validity test of forecasting models, exponential smoothing had showing value MAD = 1,025, MSE = 2,113,927, MAPE = 22%. Results of forecasting production with 6 period on the future is R1 = 5,106, R2 =5,047, R3 = 5,035, R4 = 5,032, R5 = 5,032, R6 = 5,032.
Dampak Penggunaan Naungan Plastik terhadap Profil Iklim Mikro pada Budidaya Kentang Bibit (Solanum tuberosum L) Varietas Granola Kelompok G0 I Putu Tantra Ardika; Yohanes Setiyo; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 7 No 1 (2019): 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.2019.v07.i30

Abstract

The purpose of this study was to (1) determine the microclimate profile of plastic shade with different plastic colors and (2) find out the color of plastic for the appropriate shade to increase the quality of granola G0 potato varieties. This study used a completely randomized design, each consisting of four treatments and three replications, namely treatment without shade, transparent plastic shade treatment, blue plastic shade treatment and red plastic shade treatment. For microclimate measurement, the temperature and humidity meter and light meter are used. Microclimate measurement is done once a week, which is at 12.00 p.m. Analysis of sunlight intensity data was carried out to make profile image in the shade using metose contour lines, while the results of measurements of air temperature, soil temperature, humidity and quality variables obtained were processed using a Microsoft Excel computer program to obta in graphics, then analyzed using the deskiptive method and continued the analysis using variance analysis (ANOVA). The result of the intensity of sunlight is made profile countur, and the result of measurement of air temperature, soild temperature, moisture and variable quality is made graph.The results of the study of solar light intensity show the contour of the profile when the plant is two weeks old, the clear shade distribution profile is 975-1025 lux, the shade is read 675-725 lux, the shade is blue 575-595 lux, while in the eight week old plant, the clear shade is 100-800 lux,  the shade is red 100-700 lux, and the shade is blue 100-400 lux. Average air temperature without shade 26,2 0C, clear shade 26,8 0C, red shade 26,6 0C, blue shade 26,2 0C, average moisture without shade 76%, clear shade 77%, red shade 78%, and blue shade 79%. The treatment of clear shade shows the best quality, that is an average of 4,4 tubers every single tree, average 257,6 grams every single tree and average of 1 tuber every single tree.
PERTUMBUHAN TANAMAN KRISAN (Crhysantemum) DENGAN BERBAGAI PENAMBAHAN WARNA CAHAYA LAMPU LED SELAMA 30 HARI PADA FASE VEGETATIF I Kadek Wahyu Wiguna; I Made Anom. S. Wijaya; I Made Nada
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 2 (2015): 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.2015.v03.i02.p02

Abstract

The objectives of this research were to observe the effect of addition coloured LED light on plant growth of chrysanthemum, and to observe the appropriate color lights that resulted to the best plant growth of chrysanthemum. The experimental design used was Completely Randomized Design (CRD) with one factor. The factor used was LED color lights, consisted of red, yellow, green, blue, and white LED light colors. Data were analyzed using ANOVA, followed by LSD (Least Significance Different) test if the treatment effect was significant. The variables observed that growth variables include: plant height, number of leaf and canopy area. The result showed that addition coloured LED light of positive effect against the growth of chrysanthemum. The addition of coloured LED light increased the plant growth. The red light color gave the best effect against plant growth. It showed by the highest plant height (71.50 cm), the most number of leaf blade (33.00) and the biggest canopy area (478.34 cm2).
Pengaruh Variasi Dimensi Wadah dan Fermentasi terhadap Kualitas Biji Kakao (Theabroma cacao L.) Kering I Nyoman Arinata; Ni Luh Yulianti; 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.p04

Abstract

The purpose of this study was to determine the effect of variations in container dimensions and fermentation time on the quality of dried cocoa beans from fermented with different container dimensions variations and also to determine the best treatment of the results of drying cocoa beans after the fermentation process. This research uses a factorial completely randomized design with two factors, namely the first factor is the variation of different container dimensions and the second factor is the fermentation time, which consistsof three levels, namely 5 days, 6 days and 7 days. The results of the research carried out showed that the dimensions of the container treatment and fermentation time affect the fermentation temperature, the number of seeds per 100 grams, water content, skin content and the results of the split test ie unfermented seeds, semi-fermented seeds and perfectly fermented seeds. From the results of observations that have been made, the best treatment on the fermentation temperature parameters is the largest dimension of the wooden box container treatment with 6 days fermentation time, which shows the number of results of the most perfectly fermented seed splitting test is the most compared to the unfermented split test and fermented half seed
Pengaruh Modifikasi Rasio Diameter Pulley terhadap Frekuensi Getaran Meja Getar sebagai Alat Simulasi Transportasi Darat Ni Made Yulistinana Marhaeni; Ida Ayu Rina Pratiwi Pudja; I Gusti Ngurah Apriadi Aviantara
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.p03

Abstract

Frequency is the number of vibrations that occur in one second or the number of electrical waves or vibrations produced every second. Vibrations can be produced by machine elements whose function is to transmit power from a shaft to another using a belt ca lled a pulley. The pulley works in the direction of the applied force, sending motion and changing the direction of rotation. The aim of this research is to modify the pulley ratio to obtain a lower frequency and to obtain frequency values for each combi nation of pulley diameters on the vibrating table tool. Before being modified, this tool used 2 pulleys and produced large vibrations that caused agricultural products to bruise the skin. Then it was modified by adding 2 pulleys to lower the frequency valu e. The parameters observed are calculating the circumferential speed on each pulley, calculating the number of belt revolutions, setting the speed from pulley to pulley. The research results show that a lower frequency is obtained by using 4 combinations o f pulley diameters, where pulley A measures 5cm with a rotation of 1496 rpm, pulley B measures 20cm with a rotation of 374 rpm, pulley C measures 7cm with a rotation of 374 rpm, pulley D measures 30cm with a rotation 87.27 rpm. The frequency value produced by 4 pulleys, namely 0.105 Hz, is lower than with 2 pulleys, namely 3 Hz. This test was carried out with a wooden box filled with agricultural products, namely seed potatoes, which was run for 120 minutes. As a result, the seed potatoes only experienced s hifts to the right and left and some were tipped over but did not experience physical damage
PENGARUH SUHU TERHADAP KARAKTERISTIK PENGERINGAN REBUNG BAMBU TABAH (Giganthochloa nigrociliata Kurz) Angelia Puji Lestari; P. K Diah Kencana; I Made Anom. S. Wijaya
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.p04

Abstract

Bamboo tabah shoots is a product with high level of water which is 91% and easily damaged after harvested, so the advanced handling was need to keep the quality and storage period. One method is by drying. The purpose of this research is to study the effects of temperature the drying characteristics of bamboo tabah shoots. According from this research, bamboo tabah shoots was dry by oven and used 5 points of temperatures as the way of treatment. This research was using data from weighing the mass of material within drying process to obtain decreasing of moisture content and drying rate in bamboo tabah shoots. The temperature of drying that used in this research were 50˚C, 55˚C, 60˚C, 65˚C, and 70˚C. From this research known that the drying temperatures have the effects to the result of the drying characteristics, but have no effect to the physical characteristics of drying bamboo tabah shoots. The lowest drying rate that found from the objects that was dried using 50˚C is 31,82%db/hour which was dried for 32 hour with the final water level 9,38%wb and the highest dried rate found from the object that was dried using 70˚C is 72,04%db/hour which was dried for 18 hour with the final water level 9,74%wb. The drying rate increased by the increase of temperature.
ANALISIS NERACA AIR IRIGASI UNTUK TANAMAN PADI PADA SUBAK JAKA SEBAGAI SUBAK NATAK TIYIS I Putu Riadi Handika; Sumiyati Sumiyati; I Made Anom. S. Wijaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 2 (2015): 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.2015.v03.i02.p03

Abstract

Water source of Subak Natak Tiyis irrigation system comes from the upstream of subak drainage water. Those condition was causing uncertainly irrigation water balance in Subak Natak Tiyis, thus it requires further research to determine appropriate irrigation water balance according to the availabilitiy and requirement of irrigation water in Subak Natak Tiyis. The purposes of this research were to analyze the availabilities and requirement of irrigation water of Subak Jaka as Subak Natak Tiyis and determine the water balance irrigation in the Subak Jaka as Subak Natak Tiyis. The analysis of discharge availabilities was carried out by measuring discharge at inlet Subak Jaka. Irrigation water requirement was analyzed using CROPWAT 8.0 software. irrigation water balance was obtained by comparing the discharge of irrigation water was availabilitis and irrigation water requirement so get irrigation water deficit on Subak Jaka. The analysis of discharge availabilities showed high discharge occur at rainy season that was 115.72 liter/second within a year. The smallest discharge occurs in dry season that was 19.01 liter/second within a year. Irrigation water requirement in MT I and MT II average required discharge ranged from 11.0 to 98.5 liter/second for 15 days. The result of irrigation water balance the Subak Jaka occurrence irrigation water deficit three period that was 35.2 liter/second on period June I that highest for 15 days, 16.8 liter/second on period June II and 30.7 liter/second on January I that highest for 15 days.
Analisis Profil Iklim Mikro pada Budidaya Cabai Rawit (Capsicum Frutescens L) MenggunakanBahan Sungkup Plastik, Paranet, dan Kombinasi I Made Wahyu Guna Arta; Sumiyati Sumiyati; Ida Ayu Bintang Madrini
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 7 No 1 (2019): 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.2019.v07.i31

Abstract

The hood is an alternative to overcome the high intensity of sunlight. In this study the type of containment material treatment can be divided into 3 types of containment material, namely the type of plastic lid material, paranet and combination. For microclimate measurements, a temperature and humidity meter and a light meter are used. Microclimate measurements were carried out at 12.00 WITA, on cayenne pepper from 7 days to 35 HTS. Micro climate data analysis is done by interpolation to obtain the profile contour lines. The results of the study showed that there were different shapes and distribution of different micro-climate profile contours, especially in light intensity. At air temperature and air humidity can not obtain contour lines, because the results of the data from the research conducted are not much different. Plant growth rates in each treatment showed different productivity. In this type of paranet lid material shows better results compared to the type of plastic hood and combination material. In this type of paranet lid material produces an average dry weight of 247.9 grams
Pengaruh Waktu Pelayuan dan Suhu Pengeringan terhadap Karakteristik Teh Herbal Daun Bambu Tabah (Gigantochloa nigrociliata BUSE-KURZ I Nyoman Cakra Lagawa; Pande Ketut Diah Kencana; I Gusti Ngurah Apriadi Aviantara
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.p05

Abstract

Tea is a herbal drink that is consumed by many people. The processing of stoic bamboo leaves (Gigantochloa nigrociliata BUSE-KURZ) into tea is an effort to utilize the compounds in it that are able to give a distinctive character to the results of tea products later. This research was conducted with the aim of determining the results and characteristics of herbal tea stoic bamboo leaves from different treatment time withering and drying temperature. This study uses a Completely Randomized Design consisting of two factors, the first factor used in this research design is withering time and the second factor is the drying temperature. The first factor consists of three levels, namely (P1): 8 hours withering, (P2): 10 hours withering, and (P3): 12 hours withering. The second factor consists of three levels, namely (T1): temperature 50 ° C, (T2): temperature 60 °C, and (T3): temperature 70 ° C. The parameters observed in the study consisted of chemical analysis including water content, pH, total acid, total phenol, total flavonoids and organoleptic tests consisting of the color of the brewing water, aroma, and taste in the brewed tea leaves. The results showed that the highest phenol content was found in the treatment withered time of 12 hours with a drying temperature of 70oC is 114.5664 mg / 100g. For the best total flavonoids in the treatment withered time 12 hours with a drying temperature of 70 oC that is 27.1697 mg
Analisis Persentase Kekurangan Air Irigasi pada Subak di Das Ho Saat Musim Kemarau Florinaus Walbat; I Wayan Tika; Ida Ayu Gede 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.p04

Abstract

Irrigation water shortageis caused by insufficient water discharge during the dry season. The water is distributed unevenly; theupstream water tends to have a surplus water,whereas the downstream has the tendency of water deficit. Based on the situation,it is necessary to conduct researchon the irrigation watershortageduring the dry season, so that optimal water management can be achieved. The study was conducted to determine the percentage of irrigation water deficiency in each subak and determine irrigation water management techniques that ensuring the water distributed evenly to each subak.Primary data were obtained by interview, observation, and measurement methods, while secondary data were obtained from BMKG Region III Denpasar. The data obtained were analyzed to determinethe percentage of irrigation water shortages that occurred during the dry season and to determine the proportion of irrigation water distribution.The results showed that the percentage of water shortage of irrigation water in the upstream subak was -48,43%, in the middle subak was 21,99%, and in the downstream subak 23,92%.Theproportional water management techniques in the upstream subak, middle,downstream in the dry season using modified Qt, the upstream subakhadthe initial Qt of 2,67 l/sec/haand themodified was 1,73 l/sec/ha, in the middle subak has the initial Qt of1,32 l/sec/ha and the modified was0,75 l/sec/ha, and in the downstream subak had initial Qt of 2,53 l/sec/haand themodified onewas3,21 l/sec/ha.

Page 44 of 74 | Total Record : 740

 42   43   44   45   46 

Filter by Year

2013 2026


Reset
Filter By Issues
All Issue Vol 14 No 2 (2026): INPRESS Vol 14 No 1 (2026): Inpress Vol 13 No 2 (2025): September Vol 13 No 1 (2025): April Vol 13 No 1 (2025): IN PRESS Vol 12 No 2 (2024): September Vol 12 No 1 (2024): April Vol 11 No 2 (2023): IN PRESS Vol 11 No 2 (2023): September Vol 11 No 1 (2023): April Vol 10 No 2 (2022): September Vol 10 No 1 (2022): April Vol 9 No 2 (2021): September Vol 9 No 1 (2021): April Vol 8 No 2 (2020): September Vol 8 No 1 (2020): April Vol 7 No 2 (2019): September Vol 7 No 1 (2019): Maret Vol 7 No 1 (2019): April Vol 6 No 2 (2018): September Vol 6 No 1 (2018): Maret Vol 6 No 1 (2018): April Vol 5 No 2 (2017): September Vol 5 No 1 (2017): April Vol 5 No 1 (2017): maret Vol 4 No 2 (2016): September Vol 4 No 1 (2016): Maret Vol 4 No 1 (2016): April Vol 3 No 2 (2015): September Vol 3 No 2 (2015): Agustus Vol 3 No 1 (2015): April Vol 3 No 1 (2015): Maret Vol 2 No 2 (2014): Agustus Vol 2 No 2 (2014): September Vol 2 No 1 (2014): Maret Vol 2 No 1 (2014): April Vol 1 No 2 (2013): Agustus Vol 1 No 1 (2013): Maret More Issue