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INDONESIA
Jurnal Keteknikan Pertanian
Published by Institut Pertanian Bogor
ISSN : 24070475     EISSN : 23388439     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Keteknikan Pertanian dengan No. ISSN 2338-8439, pada awalnya bernama Buletin Keteknikan Pertanian, merupakan publikasi resmi Perhimpunan Teknik Pertanian Indonesia (PERTETA) bekerjasama dengan Departemen Teknik Mesin dan Biosistem (TMB) IPB yang terbit pertama kali pada tahun 1984, berkiprah dalam pengembangan ilmu keteknikan untuk pertanian tropika dan lingkungan hayati. Jurnal ini diterbitkan dua kali setahun. Penulis makalah tidak dibatasi pada anggota PERTETA tetapi terbuka bagi masyarakat umum. Lingkup makalah, antara lain: teknik sumberdaya lahan dan air, alat dan mesin budidaya, lingkungan dan bangunan, energi alternatif dan elektrifikasi, ergonomika dan elektronika, teknik pengolahan pangan dan hasil pertanian, manajemen dan sistem informasi. Makalah dikelompokkan dalam invited paper yang menyajikan isu aktual nasional dan internasional, review perkembangan penelitian, atau penerpan ilmu dan teknologi, technical paper hasil penelitian, penerapan, atau diseminasi, serta research methodology berkaitan pengembangan modul, metode, prosedur, program aplikasi, dan lain sebagainya.
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Articles 10 Documents
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Search results for , issue "Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian" : 10 Documents clear
PENDUGAAN KANDUNGAN AIR, PROTEIN, LlSIN DAN METIONIN TEPUNG IKAN DENGAN JARINGAN SYARAF TIRUAN BERDASARKAN ABSORBSI NEAR INFRARED Adrizal .; Hadi K. Purwadaria; I Wayan Budiastra; Wiranda G. Piliang
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTThe objective of this study was to apply artificial  neural network (ANN) to enable accurate and fast prediction of moisture, protein. lysine and methionine contents of ftishmeal. The several wevelenqths of near intrared absorbance, range from 900 to 2,000 nm, were selected for training and validating ANN on each chemical component by stepwise multiple linear regression analysis. Tne ANN with three, five. seven and nine nodes at hidden layer were trained using 35 samples for moisture and protein, 33 samples for lysine and 30 samples for metionine Validating was conducted on 10 independent samples. The results of validating indicated that the best of protoin prediction was achieved by ANN with seven nodes at hidden layer for moisture. five nodes for protein and methionine, and three nodes for lysine. The standard error of prediction, coefficient of variation and ratio of standard deviation and standard error of prediction respoctivety were 0.61%, 4.81%, and 6.89 for moisture contents; 2.99%, 6.43% and 3.34 for protein contents: 0.14%, 11.32% and 3.04 for lysine contents: and 0.07%. 10.50% and 2.16 for methionine contents. With the same data entry. the ANN could predict with better performance than did by multiple linear regression Keywords: artificial neural network, near infrared, fishmeal Diterima: 25 September 2007, Disetujui: 9 Nopember 2007              
APLlKASI ARTIFICIAL NEURAL NETWORK UNTUK MENDUGA PRODUKSI TEBU (Saccharum officinarum L) DI PTPN VII PG. CINTA MANIS Amin Rejo
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

AbstractThe objective of this research was to estimate the production of sugarcane by using artificial neural network algorithm. The training was done at soma variety of iteration, those are 1000, 2000, 3000, and 4000 with the nodes at the hidden layer. 2,4, 6, and 8. Based on the simulation. it showed that the more nodes and iteration could reduce sum of squere error. for example iteration 1000 at node 2, sum of square error was 0.0148. and at the node 8, sum of squares error was 0.000196 In ither side at the node 2, the iteration 1000, the sum of squares was 0.0148, and the iteration 4000, the sum of squares was 0.00345. The result of the model test showed that sugarcane productivity had the exact for prediction that was from 87. 5 % to 97.15 %, for sugarcane production it had low prediction that was 40.0 % to 92 5 .% and respectively, it had 94.2 % to 98.8 %. Keywords: Artificial neural network, beckpropaqation, estimate of suqaercene production Diterima: 18 Nopember 2007; Disetujui: 3 Desember 2007  
OPTIMALlSASI PRODUKSI TEBU DENGAN PROGRAM LINEAR PADA PABRIK GULA TAKALAR SULAWESI SELATAN Amran Sulaiman
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTThe aim of the optimization of sugar cane production at PG Takalar is allocate all resources proportionally to get the maximal production according to factory design attached witt relatively low cost. The optimizetion was conducted with linear programming. The result showed that optimal planting period for the plant cane is June, July. October, and November, while for retoon is June up to November. The varieties those give the optimal production is Camp, F.154, Others, PS.61, PS.85-1. Q.81, and ROC. 10. The optimal portion of plant category was 25% plant cane, 30% retoon I. 25% retoon II and 20% of ratoon III. By optimization, the total area of 3.213 ha potentially can produce 192.036. 13 ton/year, which is increase about 115% from the regular practice. Keyword: Linear programming, optimization, plant cane, sugar cane Diterima: 30 Oktober 2007: Disetujui:22 Nopember 2007  
KAJIAN KEBIJAKAN ALAT DAN MESIN PERTANIAN Armansyah H. Tambunan; E. Namaken Sembiring
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACT The development of agricultural mechanization In Indonesia is still very low, even though it is believed that a proper application of agricultural mechinery can improve agricultural productivity and netional competitiveness significantiy. The development of agro-machinery industry is also very low due to unfavorable policy. This paper disclose the trend of agricultural mechanization development in Indonesia and the policy that may influence the trend. The paper concluded that (1) procurement system of agro-machinery should take Into account its appropriateness to the local requirement and condition, (2) lnter-sectoral regulation should consider the possibility to enhance local and domestic agro-mechinery industry. and (3) the local government should establish an mtersectoral technical unit In charge of agricultural mechanization. Keywords: agricultural mechanization, agro-mechinery industr, deregulation Diterima: 20 Agustus 2007, Disetujui: 20 Nopomber 2007  
PENENTUAN KONDlSI PENGUKURAN NIR TERBAIK UNTUK PENENTUAN KANDUNGAN PADATAN TERLARUT BUAH MANGGA SECARA TIDAK MERUSAK MENGGUNAKAN NEAR INFRARED SPECTROSCOPY Diding Suhandi; Rofandi Hartanto; Sulusi Prabawati; Yulianingsih .; Yatmin .
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTA search for the best NIR experimental condition for nondestructive soluble solids content prediction in mango fruit using near infrared spectroscopy was performed. In this study four treatments that was different in integration time and number of scanning was proposed. A number of 54 mango fruits (Mangifera indica  var. Indramayu) were used as samples. The samples were divided into two groups, 27 samples for developing calibration equation and 27 samples for performing validation. Using a portable spectrometer, spectra for each samples was acquired in diffuse reflectance mode at six positions. The SSC of mango was measured using the refraktometer. The Partial Least Squares (PLS) Regression was used to develop a calibration equation. The result showed that the best calibration equetion could be generated from the condition: integration time was 100 ms and number of scanning was 50 scans. Using this condition, the calibration equation resulted in high coefficient of determination (R2 = 0.85), low standard  error of calibration, low standard error of prediction and also low bias. Keywords: integration time, number of scanning, calibration equation, soluble solids content; near infrared spectroscopy Diterima: 3 Nopember 2007: Disetujui: 30 Nopember 2007  
DESAIN ALAT PENGEBOR TANAH UNTUK MEMBUAT LUBANG TANAM TANAMAN TAHUNAN Frans Jusuf Daywin; Lia Antik Kurniawati; Ika Widiastuti
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACT Making hole for planting perennial crops in Indonesia, especially in the farmer's plantation is still dominated by simple equipment such as hoe, manual drill etc,. while using heavy equipment such as post-hole-digger is performed only by big estates. For this reason, it is necessary to design soil-hale-digger machine which suits the field condition in Indonesia. The design was bused on Pahl and Beitz  method which optimizing the use of meterial, technology and economic condition and consist of severeral stops, namely, classification of the tasks, conceptual design, embodiment design and detail design. Structural design of the post-hole-digger consisted of several main components, namely, source of power. power delivery. power transmission system, point of drill and edge of point. Source of power used was a two-stroke gasoline engine of 2.38 kW delivered through a centrifugal clutch and transmitted by worm gear with 10 : 1ratio. Keywords: design, soil-hale-digger, planting, perennial crops Diterima: 8 Mei 2007; Disetujui: 22 Oktober 2007
ANALlSIS PINDAH PANAS PADA PENDINGINAN DALAM TANAH UNTUK SISTEM HIDROPONIK Herry Suhardiyanto; Muhammad Maftuh Fuadi; Yeni Widaningrum
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTZone cooling is used in greenhouses to maintain the area surrounding the plants at a level of temperature that is not too high and can be tolerated by the plants, even though air temperature inside the greenhouse rises some degrees above the temperetute level of outside air. Cooling the root zone by distributing the cooled nutrient solution is one of the most effective methods of zone cooling. In this experiment, ground environment with a relatively low temperature has been used to reduce the temperature of nutrient solution by placing trio nulriont solution tank in ebout 7 m depth under the ground (surface) It has been shown that tne method was efficient in energy use, because It need only energy for pumping the water from the depth to the floor level through a vertical pipe. Temperature of nutrient solution flowing out from the emitter with the tank placed under the ground (surface) could be maintained 0.1 to 1.9 °C lower than that sourced from tank placed at floor level. A heat transfer model has been developed to prodict the nutrient solution temperature flowing out from the vertical pipe. It has been shown that the predicted temperature of nutrient solution agreed well with that of the measured temperatures. Keywords: drip Irrigation system, heat transfer analysis, ground cooling. Diterima: 11 Agustus 2007; Disetujui: 3 Nopember 2007  
RESEARCH ON GREENHOUSE APPLICATION IN THE TROPICS Herry Suhardiyanto; Yayu Romdhonah
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTStudies on greenhouse technology for tropical conditions show significant progress in the last decade. Several concepts of adapted greenhouse structure heve been proposed by scientists in ordor to provide optimum environment for the growing plants inside, This paper reviews on some studies concentrated on Improving the performance of greenhouse structure for tropical conditions. It presents some information on the design. material selection and the construction of several proposed greenhouses. It is hoped to give helpful information for future research as well as be implemented in commercial greenhouses In the tropics Keywords: greenhouse. natural ventilation. structural design, tropics. Diterima: 17 September 2007; Disetujui: 28 Oktober 2007 
THE CURRENT STATUS OF BIODIESEL PRODUCTION TECHNOLOGY: A REVIEW Rizal Alamsyah; Armansyah H. Tambunan; Y. Aris Purwanto; Dadan Kusdiana
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTBiodiesel is addressed to the name of fuel which consist of mono-alkyl ester that made from renewable and biodegradable resources, such as oils from plants (vegetable oils), waste or used cooking oil, and animal fats. Such oils or fats are chemically reacted with alcohols or methanol In producing chernical compounds called fatty acid methyl ester (FAME) and these reactions are called transesterification and esterification. Glycerol, used in the pharmaceutical and cosmetics industry is produced from biodiesel production as a by-product. Researches on biodiesel as an alternative petroleum diesel have been done for more than 20 years. Transesterification reaction can be acid-catalyzed, alkali-catatyzed, or enzyme-catalyzed. Commercially biodiesel is processed by transesterification with alkali catalyst. This process, however, requires refining of products and recovery of catalysts, Such biodiesel production accelerates researches on biodiesel to obtain simpler methods, better quality. and minimum production cost. Besides the catalytic production for biodiesel, there is a method for biodiesel production namely non-catalytic production. Non-catalytic transesterification method was developed since catalytic tranestertfification still has two main problems assoclated With long reaction time and complicated purification. The first problem occurres because of the two phase nature of vegetable oil/methanol mixture, and the last problem is due to purification of catalyst and glycerol. The application of catalytic tranestertfication method leads to condition of high biodiesel production cost and high energy consumption. This paper provides information of biodiesel production progress namely catalytic tranestertfification  (acid, alkali, and enzymatic tranesterfification), and non-catalytic tranesterification (at sub-critical­-supercritical temperature under pressurized conditions). It was found that every method of biodiesel production still has advantages and disadvantages. It means that there is a necessity to develop biodiesel processing method further in order to obtain high reaction rate, high reaction constant (k), high yield, safely process, and minimum energy consumption. In conclusion. there are some works should be undertaken in biodiesel research. Keywords: biodiesel, methyl esters, transesterification. estenfication, and FAME Diterima: 31 Oktober 2007: Disetujui: 11 Desember 2007   
TEKNIK PENGUKURAN LAJU RESPIRASI PRODUK HORTIKULTURA PADA KONDISI AMOSFIR TERKENDALI Bagian I: Metode Sistem Tertutup Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTData laju respirasi pada berbagai komposisi gas sangat diperlukan dalam perancangan penyimpanan segar hortikultura baik sistem penyimpanan secara modified atmosphere (MA) maupun controlled atmosphere (CA). Makalah ini membahas teknik pengukuran laju respirasi pada kondisi atmosfir terkendali menggunakan metode sistem tertutup (closed system) untuk mendapatkan data talu respirasi pada berbagai komposisi gas (O2 dan C02). Hasil pengukuran menunjukkan bahwa laju respirasi pada mangga dipengaruhi oleh komposisi gas, dimana laju resprasi meningkat dengan meningkatnya konsentrasi O2 dan menurunnya konsentrasi CO2 Model matematika berdasarkan prinsip reaksi enzirmatik cukup baik untuk memformulasikan laju respirasi sebagai fungsi dari konsentrasi O2 dan CO2.Diterima: 10 November 2007; Disetujui: 6 Desember 2007 

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