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Dinamika Suhu Pengomposan Sampah Organik Rumah Tangga dengan Keranjang Bio Komposter

Madrini, I. A. Bintang, Sulastri, Ni Nyoman

Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 7 No 1 (2019): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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Abstract

Tujuan dari penelitian ini adalah untuk mengetahui kandungan unsur hara makro dan mikro sampah rumah tangga yang divariasikan dengan sekam padi dalam bio komposter atau bioreaktor garden bag. Metode pengomposan dalam penelitian ini menggunakan metode windrow system. Material sampah organik rumah tangga berperan sebagai sumber nitrogen dan sekam padi sebagai sumber karbon atau sebagai bulking agent sehingga C/N ratio bahan baku memenuhi syarat  pengomposan.Hasil analisis beberapa parameter material sampah organik rumah tangga dan sekam padi yaitu kadar air (%):76,29 dan 9,48, kadar organik (%): 98,17 dan 77,92, pH: 4,32 dan 6,56, Salinitas (mS/cm): 4,03 dan 0,21, C:N ratio :15,72 dan 112,57, total N (%): 0,87 dan 3,81, kadar lemak (%BB): 13,27 dan 9,48, vitamin C (mg/a00 g): 65,11 dan 92,99 untuk masing-masing bahan. Analisis parameter unsur hara makro dan mikro material sampah organik rumah tangga dan sekam padi menunjukkan bahwa masing-masing bahan baku memenuhi syarat pengomposan. Pada proses pengomposan, suhu diamati dari hari ke-2 sampai hari ke-14. Fase termofilik dicapai pada hari ke-2 yaitu suhu mencapai 43 OC  setelah proses aklimasi campuran kedua material. Suhu optimal atau puncak suhu yang dicapai dalam pengomposan sebesar  55OC pada hari 9 ~10 lalu mengalami penurunan suhu dihari selanjutnya, pengamatan dilakukan selama 14 hari untuk melihat dinamika perubahan suhu dari fase termofilik ke fase mesofilik.

Pengaruh Pelayuan Dan Suhu Pengeringan Daging Buah Nanas Pada Aalat Pengering Vakum Terhadap Mutu Produk Yang Dihasilkan

Ginting, Ramendra Wiro ( Fakultas Teknologi Pertanian Universitas Udayana, Bali, Indonesia )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 2 (2016): September
Publisher : Universitas Udayana

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Abstract

The purpose of this research was to measure the quality of dried pineapple pulp resulting from pre-drying treatment and method of drying, which done using randomized complete block design with factorial experiments. The first factor was pre-drying treatment consisted of two treatments, namely with and without blanching and the second one was method of drying such as control, vacuum drying at 60 oC,70o C, and 80 oC. The experiment was repeated three times. The results of the experiment showed that the best treatment resulting dried pineapple pulp with the highest organoleptic values was interaction between fruit pulp without blanching and employing vacuum drying at 70oC. The organoleptic values of this dried pineapple pulp based on its colour, crispiness, and taste were 5.70, 4,20, and 5.35, respectively.

Cost Efficiency analyais of Subsidized Fertilizer diatribution using transportation Menthode (Case Study : Klungkung Regency).

Febriani, Erni ( TEKNIK PERTANIAN, FAKULTAS TEKNOLOGI PERTANIAN, UNIVERSITAS UDAYANA )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 2 (2016): September
Publisher : Universitas Udayana

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Abstract

The aim of this research was to determine the distribution pattern of subsidized fertilizer in Klungkung regency, as well as to determine the distribution pattern of subsidized fertilizer that produced the minimum distribution cost. The research method used in the study, were a survey, measuring the distance and collect secondary data. The survey was conducted to official distributors to obtain the amount of farmer groups which recieved the subsidized fertilizer. The information of farmer groups’ distance to the official distributors, received fertilizer, and the cost spent to distribute the fertilizer were needed to calculate the unit cost of distribution. All of those information were obtained by field survey and direct measurement in location. The data obtained then was analyzed by applying three methods of transportation that was North West Corner Method, the Lowest Cost Method and The Vogels Approximation Method. The results indicated that the methods produced different costs in which the minimum distribution cost by Rp 6.065.846,00 was produces by the Lowest Cost Method. The value of the result is vsame with the transportation minimum cost that produced by the distribution pattern of subsidized fertilizer at this time in Klungkung regency, so it can be concluded that the distribution pattern of subsidized fertilizer in Klungkung regency at this time is meeting with the all criteria distribution pattern with transportation minimum cost. keywords: subsidized fertilizer, farmer group, retailer, distribution cost.

MODEL PERENCANAAN PRODUKSI UNTUK MEMENUHI PERMINTAAN PASAR DAN PENGENDALIAN PERSEDIAAN PRODUK JADI PADA PERUSAHAAN PENGHASIL MINUMAN RINGAN

Darmayanti, Ni Made ( Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 2 (2016): September
Publisher : Universitas Udayana

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Abstract

This research aims to determine the historical pattern of sales of each product variant, the index of special events that influence the demand and forecasting models are most appropriate to use as the basis for planning the production of Coca-Cola 200 ml and Sprite 295 ml in PT. CCBI Balinusa. From these studies obtained pattern on the monthly sales of each product in 2015 fluctuated from time to time. The highest sales of Coca-Cola 200 ml occurred in September, and Sprite 295 ml occurred in December. While the lowest sales data on Coca-Cola 200 ml and Sprite 295 ml occurred in July. Index top special event for Coca-Cola 200 ml is on Christmas and New Year (I=2.43), the lowest was Idul Adha (I=1.42) and Sprite 295 ml highest at Christmas and New Year (I=2.17), the lowest in the Waisak (I=1.47). The best forecasting model for Coca-Cola 200 ml is an exponential smoothing event based (ESEB) with ? = 0.3 and for Sprite 295 ml is an exponential smoothing event based with ? = 0.1.

Strategi Peningkatan Kinerja Manajemen Rantai Pasokan Jeruk Siam Di Kelompok Tani Gunung Mekar Kabupaten Gianyar Demo

Sucipta, I Made ( Program Studi Teknik Pertanian Universitas Udayana ) , Widia, I Wayan ( Program Studi Teknik Pertanian Universitas Udayana ) , Utama, I Made Supartha ( Program Studi Teknik Pertanian universitas Udayana )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 2 (2016): September
Publisher : Universitas Udayana

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Abstract

Siam citrus (Citrus nobilis var. microcarpa) is one of Balis main commodities. However, the fact showed that agribusiness system of Siam citrus is not profitable enough for small scale farmers group. This research aimed to; (1) acknowledge the structure, mechanisms, and the systematic supply chain of Siam citrus in the Gunung Mekar Farmers Group of Gianyar Regency; and (2) know the priorities recommendations in order to increased supply chains performance of Siam citrus. This research study consisted of two stages, and each process required different respondents and analysis tools as well. The first stage (to know the structure, mechanisms, and systematic of the supply chain) is using the descriptive qualitative analysis, and the second stage (to know the recommendation priorities) is using the Analytical Hierarchy Process method (AHP) as the analysis tool. The sampling on farmer levels conducted purposively and the next sampling  level determined by snowball sampling method. The research resulted three distribution patterns of Siam citrus with traditional supply chain mechanism basic. The improvement of performance supply chain management on Siam citrus, information accessibility improvement, alternative reliability, and performance indicator of product quality became the most important priority.  

Desain Bangunan Bagi Numbak dan Ngerirun pada Sistem Distribusi Air Irigasi Subak Berdasarkan Konsep Pemias

Sumiasih, Ni Kadek ( Prodi. Teknik Pertanian, Universitas Udayana ) , Tika, i Wayan ( Prodi. Teknik Pertanian, Universitas Udayana ) , Budisanjaya, Putu Gede ( Prodi. Teknik Pertanian, Universitas Udayana )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 2 (2016): September
Publisher : Universitas Udayana

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Abstract

Divider structure (tembuku) numbak and ngerirun is one of structure that used as divider in Subak water irrigation. Diversion of flow in the tembuku ngerirun was causing reduction that influenced by the difference speed and makes the difference rate of flow with tembuku numbak. The purposes of this research were: (1) to determine the level of the pemias coefficient on tembuku numbak and ngerirun, and (2) to calculate the dimensions of the tembuku numbak and ngerirun that review by pemias aspects. The real rate of flow analysed by measuring the width and height of water on the tembuku and the must rate of flow calculated by using the ratio of irrigated land area. The real rate of flow and the must rate of flow were used to determine pemias coefficients and pemias coefficients used to determine the must width of the threshold design of tembuku. Based on analysis, the average pemias coefficient was 0.095 or a value of pemias reduction was 0.095. Correlation of height of water and pemias coefficient was very high with R2 was 0.942. RMSE of width threshold value was 38.86%. The must width of the threshold at Subak is obtained by dividing the real width threshold with (1- pemias coefficients). After socialized to some pekaseh, they were mostly agree if there pemias coefficients that can be used to give pelampias on tembuku ngerirun.

KAJIAN TENTANG PERLAKUAN BENTUK KONFIGURASI ELEKTRODA TERHADAP KINERJA SENSOR KONDUKTIVITAS LISTRIK TANAH JENIS KAPASITIF

Octavianus, Wahyu ( Prodi Teknik Pertanian, Universitas Udayana ) , Wijaya, I Made Anom S. ( Prodi Teknik Pertanian, Universitas Udayana ) , Budisanjaya, I Putu Gede ( Prodi Teknik Pertanian, Universitas Udayana )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 2 (2016): September
Publisher : Universitas Udayana

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Abstract

The measurement of EC can be conducted in two ways, namely electromagnetic induction and direct contact. This study using capacitive direct contact. The aims of this study were to determine the relationship of configurations shape each other of electrode to the measurements performance, and to determine to treatment that has the best performance. The study was started by designing the electrodes then continued by functional test and performance test. The treatments used was electrodes shape of ring, hair and triangle, and electrodes configuration of each shape was 2, 4, 6 and 8. The electrode probe was inserting into the soil with the depth of 20 cm to get the frequency and at the same time soil sample was collected for analyzed in the laboratory to get the EC values. Based on those data the relationship of between soil frequency and EC were then analyzed. The results indicated that the best performance was hair shapes with 2 configuration. The equation of soil frequency and EC was EC = 0.080590 F(soil) - 4.48289 with R2 = 0.851, RMSE = 0.066, stability = 0.02 and respond time = 7.41 second.

Pengaruh Konsentrasi Dekstrin dan Tween 80 (Polyoxyethylene Sorbitan Monooleat) pada Proses Pengeringan Gel Daun Lidah Buaya (Aloe barbadensis Miller) dengan Cabinet Dryer.

Saputra, I Wayan Adi ( Prodi. Teknik Pertanian, Universitas Udayana ) , Pudja, I.A Rina Pratiwi ( Prodi. Teknik Pertanian, Universitas Udayana ) , Gunadnya, I.B.P ( Prodi. Teknik Pertanian, Universitas Udayana )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 2 (2016): September
Publisher : Universitas Udayana

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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.

ANALISIS PROFIL SUHU PADA GREENHOUSE TIPE ARCH UNTUK BUDIDAYA BUNGA KRISAN (Chrysanthemum morifolium)

Yuliasih, Ni Putu ( Prodi. Teknik Pertanian Fakultas Teknologi Pertanian Universitas Udayana ) , -, sumiyati - ( Prodi. Teknik Pertanian Fakultas Teknologi Pertanian Universitas Udayana ) , Setiyo, yohanes - ( Prodi. Teknik Pertanian Fakultas Teknologi Pertanian Universitas Udayana )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 1 (2016): Maret
Publisher : Universitas Udayana

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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

Mempertahankan Mutu Buah Tomat Segar dengan Pelapisan Minyak Nabati

Tarigan, Nirma Yopita Sari ( Prodi. Teknik Pertanian Fakultas Teknologi Pertanian Universitas Udayana ) , Utama, I Made Supartha ( Prodi. Teknik Pertanian Fakultas Teknologi Pertanian Universitas Udayana ) , Kencana, P.K. Diah ( Prodi. Teknik Pertanian Fakultas Teknologi Pertanian Universitas Udayana )

BETA (Biosistem dan Teknik Pertanian) Vol 4, No 1 (2016): Maret
Publisher : Universitas Udayana

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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.