yohanes - setiyo, yohanes -
Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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OPTIMALISASI PROSES FERMENTASI URIN SAPI MENJADI BIOURIN Aritonang, Merisa -; setiyo, yohanes -; Gunadnya, I.B.P. -
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 1 No 2 (2013): Agustus
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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Abstract

Telah dilakukan penelitian mengenai fermentasi urin sapi menjadi biourin. Tujuan penelitian ini adalah mengoptimasi proses fermentasi urin menjadi biourin dengan pemberian starter dan gula merah. Penelitian ini menggunakan Rancangan Acak kelompok pola faktorial 2 faktor dengan 3 taraf perlakuan. Faktor pertama berupa perlakuan konsentrasi starter Rumino bacillus dengan konsentrasi 0 ml, 15 ml dan 30 ml. Faktor kedua adalah perlakuan gula merah 0, 15 dan 30 g. Masing-masing perlakuan di ulang sebanyak 3 kali. Variable yang diamati adalah pH, total asam, total padatan terlarut, C-organik dan N-total. Hasil penelitian menunjukan bahwa penambahan starter R. bacillus sejumlah 15 - 30 ml dan gula merah 15 - 30 g dalam 1.500 ml urin sapi dapat mempercepat produksi biourin dalam  proses fermentasi urin sapi yang diambil dari Simantri nomor 225. Umur urin sapi sebelum diproses yaitu satu hari dari saat dikeluarkan oleh sapi dewasa. Proses fermentasi dilakukan selama 7 hari dapat dipercepat menjadi 5 hari, hal ini ditandai dengan stabilnya nilai pH, total asam dan total padatan terlarut mulai hari ke-5. Konsentrasi starter  R. bacillus 30 ml dengan penambahan gula merah 30 g pada 1.500 ml urin sapi yang difermentasi merupakan perlakuan optimal yaitu nilai pH 6, total asam 0,5%, total padatan terlarut 3,80Brix. Hal ini didukung oleh standar dari Permentan Nomor 70 dengan nilai pH 4 - 9. Namun, penelitian untuk nilai C-organik dan N-total belum cukup memenuhi standar Permentan yaitu C-organik 6% dan N-total 3-6% An experiment on biourine fermentation using cow urine has been carried out. The objective of this research was to optimize biourine fermentation by adding starter and palm sugar. The reseach used Completed Randomized Block Design with factorial pattern of 2 factors and 3 levels each. The first factor was starter concentrations of Rumino bacillus 0, 15, and 30 ml. The second one was weight of palm sugar added at 0, 15, and 30 g. Each treatment was repeated 3 times. Varibles observed were pH, acid, soluble solid, organic C, and total N. Results of the research indicated that starter addition of 15-30 ml and palm sugar 15-30 g for every 1500 ml cow urine accelerated biourine production in the fermentation stage of cow urine which was taken from simantri number 225. The fermentation process was carried out for 7 days and by adding this combination of traitment shortening the process to 5 days. This was shown by pH,total acid,and total dissolve solids value of urin which was stable after 5 days of fermentation. Concentration of 30 ml R. bacillus with the addition of 30 grams brown sugar in 1,500 ml of fermented cow urine is the optimal treatment in which the value of pH is 6, 0.5% total acid, and 3.80Brix total dissolved solids. This is supported by the standard of Permentan Number 70 with a pH value of 4-9. However, the research for C-organic  and N-total has not fulfilled the standard of Permentan  in which the C-organic is 6% and N-total is 3-6%. Keywords: fermentation, cow urine, biourine
Modifikasi Mesin Pencetak Pakan Budidaya Lele Berbentuk Pellet dengan Kebutuhan Daya Rendah Leksono, Yudha Kristyanto; Setiyo, Yohanes -; Tika, I Wayan
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 2 No 1 (2014): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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The aim of this study were to modify the machines with a small power requirements for printing fish feed pellets and to test the performance of the machine. The modified engine was a machine design by Giyarto result , modifications was on the power requirements . Stages of modification were calculate the strength of each major component of the engine , and followed by selecting the machine components . The main components of the machine are : V-belt, pulley, cylinder, cutting knife, pressing pellets and an electric motor. Engine performance testing conducted with 7 kg of dough pellets and the test was repeated 5 times. Parameters measured in this study were: machine capacity, efficiency and quality of the work machine. The results showed that the pellet-making machine modified increased in performance. The machine indicated the performance efficiency of an average 87.53 %
Pengaruh Pemberian Kompos pada Budidaya Tanaman Kacang Tunggak Terhadap Erodibilitas Tanah Sembiring, Ronni Agriva; Setiyo, Yohanes -; Sumiyati, S -
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 1 No 1 (2013): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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Abstract

Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh pemberian kompos pada budidaya kacang tunggak terhadap erodibilitas tanah. Penelitian ini juga diharapkan dapat memperbaiki sifat fisik tanah dan mengurangi erosi suatu tanah. Rancangan yang digunakan adalah Rancangan Acak Kelompok di mana perbandingan tanah dan kompos terdiri dari 6 tingkatan yaitu tanah 100%;  97,5% tanah : 2,5% kompos; 95% tanah : 5% kompos; 92,5% tanah : 7,5% kompos; 90% tanah : 10% kompos; 87,5% tanah : 12,5% kompos; dan 85% tanah :15% kompos. Penelitian diulang sebanyak 3 kali. Parameter yang diamati dalam penelitian ini adalah sifat fisik tanah antara lain: struktur tanah, permeabilitas tanah, tekstur tanah, dan sifat kimia tanah yaitu bahan C-organik tanah, maupun penentuan nilai erodibilitas tanah. Hasil penelitian ini menunjukkan bahwa perlakuan kompos pada tanah dalam budidaya kacang tunggak berpengaruh nyata terhadap tekstur tanah, permeabilitas tanah, dan bahan C-organik tanah tetapi tidak berpengaruh nyata terhadap struktur tanah. Hasil penelitian menunjukkan perbandingan tanah dan kompos pada budidaya kacang tunggak85% : 15% merupakan perlakuan terbaik untuk mendapatkan nilai erodibilitas tanah yang rendah.   This research was conducted to determine the effect of provision compost in cowpea cultivation against soil erodibility. It was also expected that the research can improve soil physical characteristics and reduce soil erosion.The design used during this research was randomized group design with the ratio of soil and compost. Ratio of soil and compost consists of six levels; soil 100%, 97.5% soil: 2.5% compost, 95% soil: 5% compost; 92.5% soil: 7.5% compost 90% soil: 10 %compost; 87.5% soil: 12.5% compost and 85% soil: 15% compost. The research was repeated three times. Parameters observed in this study were the physical characteristics of soil, those are: soil structure, soil permeability, soil texture and chemical characteristics of soil that is C-organic material, as well as the determination of soil erodibility values.The results of this research showed that the ratio of soil and compost at cowpea cultivation significantly affected on soil texture, soil permeability, and C-organic materials; however it did not significantly affect the soil structure. Therefore, the best ratio of the soil and compost in cowpea cultivation is 85%: 15% to produce low soil erodibility values.
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

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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.
Pengembangan Algoritma Image Processing untuk Menduga Hasil Panen Padi Putra, Made Arya Bhaskara; S. Wijaya, I Made Anom; Setiyo, Yohanes -
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 1 (2015): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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Abstract

The aims of this research were to develop image processing algorithm that can be used for rice yield estimation. This research consist of: 1) image acquisition, 2) image analysis with Adobe Photoshop Cs 4 and MATLAB R2009B, and 3) make the algorithm that suitable for rice yield estimation. This research was testing three method of image processing, i.e. manual pre-processing, thresholding method, and shape of Structuring Elements (SE). Forming algorithm was done by analyzing image yield and be compare with real image. More like image yield with real image, then this method was suitable for doing rice image analysis. The result of analysis showed that process of rice image analysis have to be started with manual pre-processing, using custom thresholding method, and morphology with SE shape disk. The result image of the algorithm showed the most appropriate grain image with real image, and there’s no more image that identified as a grain. Based on number of pixel, the image yield of this method is 117.407 pixel. In conclusion, the algorithm for estimation of rice yield, consist of: image acquisition, manual pre-processing, gray scaling, thresholding custom, morphology with SE shape disk, image resize, and calculation of the number of pixel grain.