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beta (Biosistem dan Teknik Pertanian)
Published by Universitas Udayana
ISSN : 25023012     EISSN : 25023012     DOI : -
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.
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Articles 7 Documents
Search results for , issue "Vol 4 No 1 (2016): Maret" : 7 Documents clear
Mempertahankan Mutu Buah Tomat Segar dengan Pelapisan Minyak Nabati Tarigan, Nirma Yopita Sari; Utama, I Made Supartha; Kencana, P.K. Diah
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

The purpose of this study was to study the effect of emulsion of vegetable oil as coating materials, on the quality and shelf life of different stages of fresh tomatoes during storage at room temperature. The maturity levels of tomato fruits were varied, namely breaker stage, turning stage, pink stage and red stage. The mixed emulsion in water of 0,5%, sesame oil and 0,5%, lemongrass oil was used in this experiment. Additional materials used to make the emulsion were 0,5% oftween 80, 0,5% of oleic acid, and 3% of ethanol. Control fruits without treatments are also prepared for comparison. The experiment was performed using a factorial Completely Randomized Design (CRD) with two factors. The first factor was the use of coating treatment consisted of two levels: coating and without coating. The second factor was the stage of maturity of tomatoes consisted of stage 2, stage 3, stage 4, and stage 5. The results showed that coating the tomato fruits with treatment of the mixed emulsion of sesame oil and lemongrass oil significantly affected the quality and storage life. The coating of tomatoes of the turning stage 3 gave the best results which was able to reduce the pH, color, TPT and total acid.
Peranan Kuat Medan Elektromagnetik dalam Memacu Pertumbuhan Vegetatif Tanaman Krisan (Crhysantemum) Permana, I Gusti Putu Eka; S. Wijaya, I Made Anom; Gunadnya, I.B. Putu
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

The purposes of this research were to observe the role of electromagnetic field exposure on vegetative phase to spur the growth of Chrysanthemum plants and to determine the appropriate electromagnetic field strength and frequency of exposure that resulted the best growth of chrysantemum plants. The method of this research was descriptive analysis with two treatment. The first treatments was electromagnetic strength consist of 2 mT (B1), 3 mT (B2), and 4 mT (B3). The second treatment was frequency of electromagnetic field exposure, consist of 1 (F1), 2 (F2), and 3 (F3) times per day. In this research, the control was without exposure by electromagnetic field used as a comparision and. Variables measured were phase were root length, rod diameter, plant height, amount of leave, and plant canopy. The result showed that plant which exposured by 2 mT until 3 mT electromagnetic field 2 times per day had a good impact for vegetative growth, however for more than 3 mT, gave unstatisfactory impact. Plant with the best vegetative growth results were exposured by 3 mT electromagnetic field 2 times per day or B2F2
Analisis Profil Suhu pada Greenhouse Tipe ARCH untuk Budidaya Bunga Krisan (Chrysanthemum morifolium) Yuliasih, Ni Putu; -, sumiyati -; Setiyo, yohanes -
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

This research was describe about temperature profile on Arch Greenhouse with the curved shape of roof and square wall for Chrysanthemum (Chrysanthemum morifolium) that cultivated on Arch Greenhouse. The aims of this research were to obtain a temperature profile on arch greenhouse, to determine the building height of arch greenhouse which suit for chrysanthemum cultivation. Height treatments of greenhouse was separated by 3 levels i.e. 2.5 m, 3.0 m, and 3.5 m. Chrysanthemum seeds varietys used in this research was Fiji white. To measure the temperature used temperature and humidity meter. Temperature measurement carried out by 2 times start from a week before planting (empty condition) and plant age was 45 days after planting. Doing the measurement on morning, noon, and afternoon. Analysis data of temperature was done with interpolation to determine profile contour line of analysis temperature. The result showed that there are the different shape and contours distribution profile of microclimate for difference height. The level of growth plan on each treatments showed a better productivity on greenhouse with height 2.5 m when compared with the others. Greenhouse with height 2.5 m produced flower quality which suit as the SNI with average of height plan was 81.93 cm, grooming age was 46 days, amount flower was 5 florets per stem, flower wide was 44.26 cm, and dry weight was 13.11 gram.
Pengaruh Suhu Terhadap Karakteristik Pengeringan Rebung Bambu Tabah (Giganthochloa nigrociliata Kurz) Lestari, Angelia Puji; Kencana, P.K. Diah; Wijaya, I Made Anom S.
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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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
Pengaruh Package Icing Terinterupsi Terhadap Mutu Brokoli (Brassica oleracea, L.) Selama Penyimpanan Mahendra, I Putu Agus Oka; Pudja, I. A. Rina Pratiwi; Arda, Gede -
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

The aims of this study were to determine the effect of interrupted package icing broccolis on product’s quality and to obtain the best treatment that can be applied to maintain the shelf life of product. Fresh broccolis were stored in Styrofoam box covered by ice for period of time and then move to refrigerated showcase. The research consists of five treatments based on ratio time in Styrofoam box and display product. Comparison stored broccolis in Styrofoam box with ice and display product on show case; 12:12 (P2), 15:9 (P3), 18:6 (P4), 21:3 (P5). Other treatment is stored broccolis in Styrofoam box without ice and display product on room temperature with comparison time; 12:12 (P1). Every treatment was repeated every day until the broccoli reached the unacceptable quality according to panelist’s perception. Measured parameters including percentage of weight loss, respiration rate, color difference and the shelf life of broccoli. The results showed that longer time storage broccoli in Styrofoam box with ice smaller the weight difference. P5 have lowest consumption rate of oxygen of 62.63 ml/.kg.hr and lowest carbon dioxide production rate of 62.57 ml/.kg.hr. The color difference ?Eab less than 9.73 indicated that broccoli’s floret was still green based on the panelists scoring, therefore it was still acceptable. Higher color difference’s poin and panelists scoring, broccoli was broken and not accepted in the market. In conclusion, the treatments only maintained the broccoli for five days of storage.
Aplikasi Metode SRI (System Rice of Intensification) dan Sistem Tanam Jajar Legowo Terhadap Iklim Mikro yang Mempengaruhi Produktivitas Padi Beras Merah Rusman Pita, Paul Ludgerius; -, Sumiyati -; Nada, I Made
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

This research was carried out to know the result of the application method system of rice intensification (SRI) which was combined with rice planting system legowo in raw toward micro climate which influence the productivity of red rice. These research was consist of 6 treatments, they were : K0 (the treatment which appropriated to local farmers custom), K1 (SRI method), K2 (SRI method combined with legowo 4:1 inserting), K3 (SRI method combined with legowo 4:1 without inserting), K4 (SRI method combined with legowo 6:1 inserting), and K5 (SRI method with legowo 6:1 without inserting). This treatment study was repeated 3 times. Parameters observed were : relativity of humidity, temperature, intensity of sun shine, the length of stalk, the weight of rice in a clump, percentage pure rice, the weight of 1000 pure rice, the number of young plants in a clump, the number of young plants and each productivity. The outcome of this research shown that the application of SRI method combined with legowo 4:1 without inserting got more intensity of sun shine and the highest temperature, while the application of K0 had the highest relativity weakness. Application SRI method with legowo 6:1 without inserting produced the highest product in average per width of area, there were 7,48 ton/ ha, comparing with other applications.
Perancangan Sistem Irigasi Otomatis dengan Sensor Resistif Berbasis Kadar Air Tanah pada Tanaman Rukola (Eruca sativa) Antara, I Putu Agus Sumi; Tika, I Wayan; Budisanjaya, I Putu Gede
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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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.

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