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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.
Arjuna Subject : -
Articles 623 Documents
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PERKEMBANGAN PROSES PEMBUATAN BIODIESEL SEBAGAI BAHAN BAKAR NABATI (BBN) Joelianingsih .; Armansyah H Tambunan; Hiroshi Nabetani; Yasuyuki Sagara; Kamaruddin Abdullah
Jurnal Keteknikan Pertanian Vol. 20 No. 3 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.3.%p

Abstract

ABSTRACT As energy dernands increase and fossil fuel reservas are limited, research is directed towards alternative renewable fluls. A potential diesel fuel substitusi is biodiesel, obtained from fatty acids methyl esters (FAME) and produced by the transesterfication reaction of triglyceride or free fatty acid (FFA) of vegetable oils with short-chain alcohol, mainly methanol. Most of the currently of alcohol. Although the removal of the excess alcohol can be easily achieved by distillation, however the removal of catlyst and the by-product formed from its reaction with the reactants is complicated while several methode for glycerol purification have been reported. The disadvantages resulting from the use of a catalyst and itsremoval from theproducts can beeliminated if a non-catalytic reaction of the vegetable oils with alcohol can be realized and a simpler and cheaper process can be developed.indonesia has the opportunity to expand oil palm and other plantations such as jatropha curcas (jarak pagar)in order to provide sufficient amount of crude oil for development of biodiesel industry. Keyword: biodiesel, vegetable oil, renewable source of energy, catalyst, non-catalytic, transesterfication Diterima: 6 April 2006; Disetujui: 19 Juli 2006
RANCANG BANGUN SISTEM PEMANTAUAN DAN PERINGATAN DINI PARAMETER LINGKUNGAN MIKRO BUDIDAYA TANAMAN PADA RUMAH TANAMAN BERBASIS SMS (SHORT MESSAGE SERVICE) Mohamad Solahudin; Yudi Chadirin; Gumilang Agus Gozali
Jurnal Keteknikan Pertanian Vol. 20 No. 3 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.3.%p

Abstract

ABSTRACT SMS (Short Message Service) is one of technology can be use alternative to develop greenhouse micro climate monitoring and alert system. This technology selected because of simplicity in information access and widely spread use as comunication tools. The purpose of this research is to develop greenhouse Micro Climate Monitoring and Alert System by combining SMS technology, Portable Weather Station and Mobile FBUS V 1.5. System test performance for variouse provider shows the result wihch vary. The results shows that this system can be applied as monitoring and alert system technology. The performance test shows thaht the average of time service from all communication providers is 24,45 second, with 2.65 lag time. Keyword: Greenhouse, Micro Climate, SMS.n Diterima: 29 September 2006; Disetujui: 16 Nopember 2006
ALGORITMA FILTER KALMAN UNTUK MENGHALUSKAN DATA PENGUKURAN Rudiyanto .; Budi Indra Setiawan; Satyanto Krido Saptomo
Jurnal Keteknikan Pertanian Vol. 20 No. 3 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.3.%p

Abstract

ABSTRACT The objective of this paper is to apply a simple algorithm of Kalman Filter, wich is know as noise data filtering. The computer program was written in Macro Visual Basic in MS Exel. Testings were carried out on available temperature, Water level and force data and then were comared with the mooving average method. The result shows that the algorithm performed better and lesser deviation than the mooving average. Keyword: Kalman Filter, mesurement data, computer program Diterima: 30 Oktober 2006; Disetujui: 14 Nopember 2006
EVALUASI ALIRAN PERMUKAAN, EROSI DAN SEDIMENTASI DI SUB DAS CISADANE HULU DENGAN MENGGUNAKAN MODEL AGNPS (AGRICULTURAL NON POINT SOURCE POLLUTION MODEL) Sukandi Sukartaatmadja
Jurnal Keteknikan Pertanian Vol. 20 No. 3 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.3.%p

Abstract

ABSTRACT Composition of a good watershed management planning needs accurate information about erosion, runoff and its quality, so that its model for them, middle term and long term goal can be projected. The model had been used is AGNPS (agricultural non point source pollution model) is developed by Robert A. Young, Charles A. Onstad, David D. Bosch. And Wayne P. Anderson in 1987. The Objective of this reseacrh is to looked for the effect of soil conservation had been done with rehabilitation activities plan to watershed condition using AGNPS model wich is divided into two plans. The effect of soil conservation activieties by a better plan wich is suited with Upper Cisadane Watershed could decreased runoff volume, runoff peak rate, annual erosion and sediment weight into 20% so that it could repaired the condition of Upper Cisadane Watershed wich is dangerouse before. Keyword: AGNPS, runoff, erosion, sediment, soil conservation, plan Diterima: 9 Mei 2006; Disetujui: 30 Mei 2006
PEMERIKSAAN MUTU KARET RSS MENGGUNAKAN PENGOLAHAN CITRA Usman Ahmad; Fahmi Riadi; I Dewa Made Subrata
Jurnal Keteknikan Pertanian Vol. 20 No. 3 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.3.%p

Abstract

ABSTRACT Evaluation of ribbed smoked sheet (RSS) quality is commonly done manually through an assessment of rubber sheet surface appearance based on its unifromity and brightness of color, and also existence of physical defect like air bulb, with spot and spotted by fungus prior to classification into RSS-1, RSS-2 and of RSS-3. This reseacrh aimed to develop a method to evaluate RSS quality using image processing. Each 40 sheets of simple in a size of 30x25 cm was capture using a CCD camera from 40 cm distance with a resultion 341x256 Pixels. The characteristics observed were RBG index, HSI color components, and textural features. Three goups of sample could be discriminated using blue color index with 80.0%, 82.5% forRSS-1, 60.0% for RSS-2 and 97.5%, ForRSS-3. Grading based on HSI color modelgave better result with 86%, 77.5%, 85.0% and 95.0% accuracy for the RSS-1, RSS-1 and RSS-3, respectively. The computer-based grading indicated that the classification by computer using HSI component was more reliabe than manually grading.In conclusion, the developed algorithm was able to classify 120 samples and corrected some of miss-classification by manual grading. Keyword: image processing, ribbed smoked sheet, grading
VALUASI MUTU BUNGA POTONG KRISAN YELLOW FIJI MENGGUNAKAN PENGOLAHAN CITRA Usman Ahmad; Enrico Syaefullah; Hadi K Purwadaria
Jurnal Keteknikan Pertanian Vol. 20 No. 3 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.3.%p

Abstract

ABSTRACT The domestic and export market of chrysanthemum cut-flower require a prime and consistent cuality. Meanwhile, manual grading system based on human vision resulting in quality inconsistentcy. The objective of this study was to develop computer program for quality evaluation of Yellow Fiji chysanthemum cut-flower using image processing. The cut-flowers were classified into different quality standards (AA,A.B.C) based on the steam length and straightness, and flower diameter. Then results indicated a strong relationship between quality parameters extracted from the image and those obtained from direct meaurement for grade AA,A,B and C with R2=0.98, R2=0.97, R2=0.97, and R2=0.98 respectively for length of stem. Also with R2=0.90, R2=0.87, R2=88, and R2=88 respectively for diamter of flower. The validation of the computer program for the quality evaluation of Yellow Fiji chrysanthemum cut-flower performed a hight a ccuracy of 100% for AA grade, 90% for A grade, 85% for B grade, and 100% for C grade. Keyword: chrysanthemum, image processing, quality evaluation Diterima: 12 Juni 2006; Disetujui: 21 Nopember 2006
Rancang Bangun dan Uji Kinerja Mekanisme Pengendali Otomatis Pedal Rem dan Tuas Transmisi Maju-Mundur pada Traktor Roda Empat I Dewa Made Subrata; Radite Praeko Agus Setiawan; Setya Permana; Muhammad Sigit Gunawan; Andreas .
Jurnal Keteknikan Pertanian Vol. 1 No. 1 (2013): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.01.1.%p

Abstract

AbstractMost of the four wheeled tractors were operated manually for many agricultural applications. Therefore the operator’s fatigue during operating tractor can’t be avoided. To decrease operator’s fatigue it was necessary to operate tractor automatically for forward and backward motion. This research focus on the automatic backward motion and decrease turning radius by modify the brake pedal and forward-backward transmission mechanisms, which were controlled using DC motor with H-bridge actuator. Functional test was done by lifting up the tractor so that it was not move sideways while the tires were rotated. Performance test was done on the field to know the ability of the tractor to move forward and backward automatically and to know the turning radius when the left or right brake pedal was pushed down automatically. Experimental result showed that the time required to push the brake was about 0.47 s for left brake and 0.61 s for right brake. Field test result showed that the tractor was able to control automatically for forward motion with average speed of 0.62 m/s, backward motion with average speed of 0.63 m/s, to turn left with average turning radius of 2.2 m, and turn right with average turning radius of 2.4 m.Keyword: automation, forward-backward transmission, brake pedal.AbstrakSampai saat ini sebagian besar traktor roda empat masih dioperasikan secara manual untuk penerapan di bidang pertanian. Dengan demikian kelelahan operator dalam mengoperasikan traktor tersebut tidak dapatdihindari. Untuk menurunkan tingkat kelelahan operator maka perlu diupayakan mengoperasikan traktor secara otomatis untuk gerakan maju maupun mundur. Otomatisasi gerakan maju telah dilakukan padapenelitian sebelumnya. Penelitian ini lebih difokuskan pada otomatisasi gerakan mundur dan memperkecil radius belok dengan memodifikasi mekanisme pengendali rem dan mekanisme pengendali transmisi majumundur. Kedua mekanisme tersebut dikendalikan menggunakan motor DC dengan aktuator H-bridge. Uji fungsional dilakukan di laboratoriun dengan cara mengangkat traktor sehingga roda tidak menapak dan traktor tidak bergerak meskipun rodanya berputar. Pengujian kinerja mekanisme juga dilakukan di atas lahan kering untuk mengetahui kemampuan bergerak maju dan mundur secara otomatis dan berputar balik melalui penekanan pedal rem secara otomatis. Hasil pengujian fungsional menunjukkan mekanisme bekerja dengan baik dengan waktu penekanan rem 0.47 s untuk rem kiri dan 0.61 s untuk rem kanan. Hasil pengujian lapangan menunjukkan bahwa traktor dapat dikendalikan secara otomatis untuk bergerak maju dengan kecepatan rata-tara 0.62 m/s, bergerak mundur dengan kecepatan rata-rata 0.63 m/s, berputar dengan jari-jari 2.2 m untuk rem kiri dan 2.4 m untuk rem kanan.Kata Kunci: otomatisasi, transmisi maju-mundur, pedal rem.Diterima: 11 Maret 2013; Disetujui: 18 Juni 2013
Rancang Bangun Incubator dengan Suhu dan Kelembaban Udara Terkendali untuk Penetasan Telur Ulat Sutera Dewa Made Subrata; Ahmad Nurman Sajuri; Ade Priyadi; Hotnida CH Siregar
Jurnal Keteknikan Pertanian Vol. 1 No. 1 (2013): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.01.1.%p

Abstract

AbstractSilkworms were the poikilothermic animals with life cycle strongly affected by environment condition such as temperature, humidity, light and wind. In other the silkworm’s egg hatcheries uniformly at the sameday, it was considered necessary to use the temperature and humidity controllable room (incubation room) according to their optimum hatcheries condition. The incubation room consisted of four actuators i.e: theheater, the cooler, the mist maker, and the water content absorber. All of that actuators were controlled based on the output signal from the sensor (SHT11). In this research the temperature was controlled at the value of 25°C, while the humidity was controlled at the value of 75 %. The experimental result of the incubator machine without silkworm egg shown that the incubator was able to control the temperature at the value of 25°C with maximum 25.4°C. It was also able to control humidity at optimum interval i.e: 73.9 % to 76.1 %. Experimental result with silkworm egg showed that the incubator was able to increase the uniformity of the hatcheries day, even though the hatcheries day was late about two days compared to the conventional method.Key words: incubator, controllable room, hatchery, silkworms egg.AbstrakUlat sutera tergolong hewan poikilotermik yaitu siklus hidupnya sangat dipengaruhi oleh kondisi lingkungan (suhu, kelembaban, cahaya dan angin). Supaya telur ulat sutera menetas secara seragam padahari yang sama, maka perlu digunakan ruang yang suhu dan kelembabannya dapat dikendalikan pada nilai optimum penetasannya. Rancangan ruang inkubasi terdiri dari empat unit aktuator yaitu: pemanas, pendingin, pengkabut dan penyerap uap air. Keempat perangkat tersebut dikendalikan berdasarkan nilai pengukuran yang dihasilkan oleh sensor suhu dan kelembaban jenis SHT11. Pada penelitian ini suhu dikendalikan pada nilai 25°C dan kelembaban pada nilai 75%. Hasil pengujian pada kondisi tanpa telur menunjukkan bahwa incubator mampu mempertahankan suhu pada nilai 25°C dengan suhu maksimum25.4°C demikian juga untuk kelembaban dipertahankan pada selang nilai 73.9 % sampai 76.1 %. Hasil pengujian pada kondisi dengan telur ulat sutera Bombyx mori L. menunjukkan bahwa incubator mampumeningkatkan keseragaman hari penetasan telur namun penetasannya lebih lambat dua hari dibandingkan dengan metoda konvensional.Kata kunci: inkubator, ruang terkendali, penetasan, telur ulat sutera.Diterima: 20 Maret 2013; Disetujui: 02 Juli 2013
Modifikasi dan Uji Kinerja Kompor Spiral dengan Bahan Bakar Minyak Jarak Pagar Gatot S.A. Fatah; Soebandi .
Jurnal Keteknikan Pertanian Vol. 1 No. 1 (2013): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.01.1.%p

Abstract

AbstractEnergy crisis in Indonesia is still a problem that has not been fully resolved. Kerosene as the primary fuel for cooking, the price is very expensive (at Rp 8000.-/liter). Until now, the pressure cooker kerosene isstill used by cake makers, bread, and noodle. By modifying the part of the cup rubbing alcohol and add a protective piping hot, the stove can be used with pressurized fuel Jatropha oil. Tobacco industry, ceramic and asphalt still use the stove. The purpose of this study is to obtain a prototype pressure cooker spiral type, fueled with jatropha oil by modifying the part of the reservoir cup rubbing alcohol, pipe and nozzle heat shield oil expenses. Modified pressure cooker and test performance using Jatropha oil is obtained as follows: the fuel consumption of 935 ml / hour; pre-heating 17 minutes; time required to boil 2 liters of waterwas 5 minutes; noise level of 83.3 dB and the reddish color of blue flame.Keywords : pressure stove, jatropha oil, spiral type cooker, modification.AbstrakKrisis energi di Indonesia masih menjadi masalah yang belum sepenuhnya teratasi. Minyak tanah sebagai bahan bakar utama untuk memasak, harganya menjadi sangat mahal (mencapai Rp 8,000,-/liter). Sampai saat ini, kompor bertekanan berbahan bakar minyak tanah masih digunakan oleh pembuat kue, roti, dan mie. Dengan memodifikasi pada bagian cawan tempat spiritus dan menambahkan pipa pelindung panas,maka kompor bertekanan dapat digunakan dengan bahan bakar minyak jarak pagar. Industri pengovenan tembakau, keramik dan pengaspalan masih menggunakan kompor tersebut. Tujuan dari penelitian iniadalah untuk mendapatkan prototipe kompor bertekanan tipe spiral yang berbahan bakar minyak jarak pagar dengan cara memodifikasi pada bagian cawan penampung spiritus, pipa pelindung panas dan noselpengeluaran minyak. Hasil modifikasi dan uji kinerja kompor bertekanan dengan menggunakan minyak jarak pagar diperoleh sebagai berikut: konsumsi bahan bakar 935 ml/jam; pre-heating 17 menit; waktuuntuk mendidikan 2 liter air diperlukan waktu 5 menit; tingkat kebisingan 83.3 dB dan warna nyala api biru kemerahan.Kata kunci : kompor bertekanan, minyak jarak pagar, kompor tipe spiral, modifikasi.Diterima: 23 April 2013; Disetujui: 18 Juli 2013
Aplikasi Zone Cooling pada Sistem Aeroponik Kentang Di Dataran Medium Tropika Basah Eni Sumarni; G. H. Sumartono; Satyanto Krido Saptomo
Jurnal Keteknikan Pertanian Vol. 1 No. 1 (2013): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.01.1.%p

Abstract

AbstractSupplies of seed potatoes in Central Java is more than 12,000 tons per year, but that can be provided only about 300 tons. From this condition, there is a large market opportunity for the provision of seed potatoes. Highland for planting potatoes in Indonesia is still limited. Therefore, the cultivation of the potato in the plains of the medium is one of the efforts to help the production of seed. The high temperature in the plains of the medium can be resolved through aeroponics system with limited cooling (zone cooling). The purpose of this study is to obtain an appropriate cooling temperature on seed potato production in medium land. Aeroponic cultivation techniques used with 3 zone cooling (15 °C, 19 °C and 24 °C) and controls. Potato varieties used in this study is Granola is from tissue culture .The results showed that the highest plant cooling obtained at day and night regions 19 °C and 24 °C at night. The highest number of leaves was obtained at 24 °C day and night. The highest number of tubers obtained at 19 °C day and night.Keywords : aeroponics, medium wet tropical climates, potato, seed, , zone coolingAbstrakKebutuhan benih kentang di Jawa Tengah lebih dari 12.000 ton per tahun, tapi baru dapat dipenuhi sekitar 300 ton. Dari kondisi ini, ada peluang pasar yang besar untuk penyediaan bibit kentang. Dataran tinggi untuk menanam kentang di Indonesia masih terbatas. Oleh karena itu, budidaya kentang di dataran medium adalah salah satu upaya untuk membantu produksi benih. Suhu tinggi di dataran medium dapat diselesaikan melalui sistem aeroponik dengan pendingin terbatas (zone cooling). Tujuan dari penelitian ini adalah untuk mendapatkan suhu pendingin yang sesuai pada produksi benih kentang secara aeroponik didataran medium. Teknik budidaya aeroponik menggunakan 3 zona pendinginan (15 oC, 19 oC dan 24 oC) dan kontrol. Varietas kentang yang digunakan dalam penelitian ini adalah Granola dari kultur jaringan. Hasilpenelitian menunjukkan bahwa tinggi tanaman tertinggi diperoleh pada pendinginan siang dan malam suhu 19 °C dan pendinginan 24 °C di malam hari. Jumlah daun tertinggi diperoleh pada suhu 24 °C siang danmalam. Jumlah umbi tertinggi diperoleh pada suhu 19 °C siang dan malam.Kata kunci: aeroponik, benih kentang, dataran medium tropika basah, zone coolingDiterima: 01 Maret 2013; Disetujui: 03 Juni 2013

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