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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.
Arjuna Subject : -
Articles 623 Documents
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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 
A RIPENESS STUDY OF OIL PALM FRESH FRUIT AT THE BUNCH DIFFERENT POSITIONS Rismen Sinambela
Jurnal Keteknikan Pertanian Vol. 8 No. 1 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.1.9-14

Abstract

The paper aims to study the position of the optimum oil palm ripeness at the bunch different positions. This information is essential to complete a measurement procedure to detect oil palm fresh fruit bunch (FFB) maturity so that the detection devices can directly measure the optimal mature position as a representative of the entire FFB characteristics. In this study, the oil palm FFB (Elaeis guineensis Jacq. var. tenera) with the various ripeness stages (4 until 22 weeks after anthesis) were collected and divided from three positions, i.e., proximal, central and distal. Moreover, each fruit in each of these positions was subjected to sample preparation to identify water and oil content. The water and oil content were completed based on the oven test method and the Soxhlet extraction technique, respectively. The optimum ripeness position is determined based on the lowest water content and the highest oil content. Based on the analysis, during the process of oil palm maturation occurs a decrease in water content and an increase in oil content. In addition, the average water content of palm fruit varies greatly depending on its position based on the analysis, i.e., proximal (45.38±5.62%), central (35.30±3.34%) and distal (41.98±2.57%). The average oil content of oil palm fruit in the central position is higher oil content (25.10±1.72%) compared to the proximal (10.00±0.77%) and distal position (13.77±1.22%). We suspect that the chemical content differences of palm fruit in various positions are due to the inequality of the respiration rate and ethylene production throughout FFB. In addition, overall it can be concluded that the fruit in the central FFB position has an optimal ripeness level compared to the proximal and distal position. Thus, the measurement position recommended in evaluating palm maturity is at the central position of FFB.
Evaluasi Mutu Beras dengan Kesesuaian Good Handling Practices dan Good Manufacturing Practices di Kabupaten Bogor Dwi Zuwarman; Sutrisno Suro Mardjan; Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 8 No. 1 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.1.1-8

Abstract

Milled rice is one of the most important agricultural commodities for Indonesian people as staple food. Consumers tend to not know how to differentiate good or low quality of rice. Rice mill (RMU) in Bogor Regency mostly do not have quality standard comply with Indonesian National Standard (SNI). The purpose of this study was to identify the quality of rice and milled rice produced by RMU in Bogor Regency and evaluate the suitability of the application of rice and milled rice handling in RMU to Good Handling Practices (GHP) and Good Manufacturing Practices (GMP). The parameters measured were analysis of rice and milled rice quality and data analysis. The data resulted from measuring the quality of grain and rice was obtained from interview and observation. The results showed that four RMU rice samples not included in the class category SNI 6128: 2015 and two samples included in Medium III (M-3). On the postharvest handling conformity level was 44.92 percent for GHP and 60.25 percent for GMP. GHP and GMP guidelines were not yet fully applied by rice milling unit (RMU).
Aplikasi Ozon Untuk Mempertahankan Kualitas Buah Duku Andi Ani Kuswati; Emmy Darmawati; Siti Mariana Widayanti
Jurnal Keteknikan Pertanian Vol. 8 No. 1 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.1.15-22

Abstract

Abstrak Perawatan tanaman duku yang masih kurang baik, membuat buah duku yang dipanen berpotensi membawa kontaminan mikroorganisme dari lahan sehingga turut mempercepat kerusakan buah. Teknologi ozon telah banyak digunakan untuk menghambat perkembangan mikroorganisme pada penyimpanan hortikultura segar. Tujuan penelitian adalah mengkaji pengaruh durasi pemaparan ozon dengan laju 1.38x10-4 gram/detik terhadap perubahan mutu duku dalam penyimpanan. Durasi pemaparan ozon yang dikaji adalah 20, 40 dan 60 detik sebagai perlakuan. Penelitian dilakukan menggunakan Rancangan Acak Lengkap (RAL). Pertumbuhan mikroba diukur menggunakan uji TPC, sedangkan parameter mutu yang dikaji adalah perubahan warna, kekerasan, total padatan terlarut (TPT) dan susut bobot. Data dianalisa menggunakan ANOVA dan uji lanjut Duncan. Perlakuan ozon yang memberi efek tebaik adalah laju 1.38x10-4 gram/detik dengan paparan 60 detik. Perlakuan tersebut mampu menahan pertumbuhan mikroba hingga 6.11 (log cfu/g) dibanding kontrol pada hari ke enam penyimpanan dengan mutu duku yang lebih baik berdasarkan nilai TPT dan susut bobot dengan nilai masing-masing adalah 17.8 obriks dan 0.93%. Namun untuk parameter warna dan kekerasan buah, perlakuan ozon 40 detik menghasilkan nilai yang lebih baik. Pelakuan ozon dengan paparan selama 40-60 detik dapat diaplikasikan untuk mempertahankan mutu duku yang dikombinasikan dengan penyimpanan suhu 14 1oC. Kata Kunci: ozon, buah duku, total plate count, durasi
PENGARUH PRE-TREATMENT DALAM PROSES CURING DAN SUHU PENYIMPANAN TERHADAP MUTU DAN MASA DORMANSI BENIH BAWANG PUTIH Sandro Pangidoan Siahaan; Tatang Hidayat; Sari Intan Kailaku; Abdullah bin Arif
Jurnal Keteknikan Pertanian Vol. 8 No. 1 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.1.29-38

Abstract

Bawang putih (Allium sativum L.) merupakan komoditas sayuran yang penting bagi masyarakat Indonesia. Bawang putih merupakan salah satu produk hortikultura yang memiliki sifat mudah rusak bila tidak ditangani dengan tepat, baik dalam tahapan curing maupun penyimpanan. Masa dormansi juga merupakan salah satu kendala dalam penyediaan benih bawang putih karena masa dormansi umbi relatif lama. Dormansi bawang putih dapat dikendalikan oleh suhu dan lama penyimpanannya. Tujuan penelitian ini adalah mendapatkan rekomendasi teknologi pascapanen tentang proses curing, pengaruh suhu dan lama penyimpanan untuk mempercepat pematahan dormansi benih bawang putih dengan daya tumbuh tinggi. Proses curing bawang putih pada instore dryer yang dilakukan dengan memotong daun (± 10 cm dari pangkal umbi) memerlukan waktu curing yang lebih singkat (6 hari) dibandingkan dengan bawang putih brangkasan (8 hari). Penyimpanan bawang putih untuk benih pada suhu rendah (12-14oC) menghasilkan persentase kerusakan umbi (busuk dan hampa) yang lebih rendah daripada suhu tinggi (38-42oC) dan suhu ruang (28-30oC) setelah penyimpanan selama 12 minggu. Penyimpanan dengan cara memotong daun bawang putih menghasilkan persentase kerusakan umbi (busuk dan hampa) yang lebih rendah dibandingkan brangkasan. Penyimpanan benih bawang putih pada suhu rendah (12-14oC) menghasilkan daya tumbuh yang lebih tinggi daripada suhu ruang (28-30oC) dan suhu tinggi (38-42oC) baik pada benih yang dipotong daunnya maupun brangkasan.

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