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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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Study on the Storage Characteristics of Minimally Processed of Oranges (Citrus grandis L.) Under Modified Packaging . Saputera; . Sutrisno; Slamet Susanto; I Wayan Budiastra
Jurnal Keteknikan Pertanian Vol. 14 No. 1 (2000): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.014.1.%p

Abstract

Orange (Citrus grandis L.) is one of horticulture commodity which is consummed because of its delicious taste and plenty vitamins and minerals that is required by the humm body. The respiration rate of the minimally processed of orange at 10, 15 and 27.5 OC were 8.10, 13.24 and 28.212 ml/kg. h, re.jp,pectivily. The respiration rate of whole (unpeeled) orange at the same storage temperature were 10.15, 19.13 and 42.28 ml/kg. h, respectivily.
The Influence of LRC Current from the Q-Meter to the Measured Value of Dielectric Properties Within Radio Frequency Range Harmen .; Armansyah H. Tambunan
Jurnal Keteknikan Pertanian Vol. 17 No. 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.017.1.%p

Abstract

Various measurement method of dielectric properties has been studied by researches, one of wich is the Booton 160-A Q-meter operated within the radio frequency range. Determination of dielectric properties by the Q-meter is accomplised through the measurement of voltage (Q) and capacitance (C) of the LRC, which is naturally in the form of alternating current (AC). Measurement of the AC voltage by a voltmeter shows instability of the measured value, while using an osciloscope require an expensive apparatus. The problem seems can be solved by convertion of the LRC output from alternating to direct current. This paper is to study the influence of LRC output to the measured dielectric properties, by converting the output from alternating to direct current.
Studyon Characteristics and Shelf Life Prediction of Cashew Appels Using Modified Atmosphere Packaging System La Rianda; . Sutrisno; Rizal Syarief; I Wayan Budiastra
Jurnal Keteknikan Pertanian Vol. 14 No. 1 (2000): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.014.1.%p

Abstract

The aims of this research are: I) to identzJL the changes ofphysiologic characteristics of cashew apples during storage under MAP system; 2) to verzfv the changes of their quality during storage; and 3) to establish the optimum gaseous compotition range in the MAS system. To completed the research, the experimen was conducted by four steps activities as follows: I) the measurement of respiration rate; 2) establishment of the range of modijied atmosphere storage for cashew uppels; 3) cojitputingthe packaging area and selecting the kind of plastic film; 4) prediction of shelf lge for cashew appels during srorage under MAP system.
Effectivitas of Pitcher Fertigation System on Bushes Pepper Crops Hemantoro .; B. I. Setiawan; S. Hardjoamidjojo; M.H. Bintoro
Jurnal Keteknikan Pertanian Vol. 17 No. 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.017.1.%p

Abstract

The successful application of pither irrigation system has motivated to investigate the pitcher as a fertigation system. The experiment was conducted at Leuwikopo Experiment Station, Agricultural Engineering Departement, Bogor Agricultural University. The main objective of this study is to study the effectiveness of pitcher fertigation system on bushes pepper crops. The result shows that the pitcher wall is capable to release NPK solution. Diffusion rate of fertilizer solution was measured as affected by the concentration inside and outside of the pitcher. The soil moisture distribution in the soil is sufficient to transport the solution available for crops development. Concentration of Phosphate (P) and Potassium (K) decrease laterally and the Nitrogen (N) tends to accumulate homogeneosly in moist part around the pitcher.
Cutting Torque and Blowing Effect of Slanted Blade Model for Rotary-Type Mower I Nengah Suastawa; Radite Praeko Agus Setiawan; Prima Sanjaya
Jurnal Keteknikan Pertanian Vol. 17 No. 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.017.1.%p

Abstract

Rotary-type mower is commonly used for cutting turfgrass as a part of landscape maintenance. Cutting torque and quality to turf surface resulted by cutting are two important factors that have to be considered in designing rotary-type mower blades. The objectives of this research are to design and build a slanted blade model, and to study its cutting torque, blowing effect, and friction between blades and turf surface on a several rotational speeds, slant angles and blade types. The blade model was tested on a specially designed turf-bin test apparatus.
Design and Performance Test of Measuring Apparatus of Dielectric Properties Using Q-Meter Method Armansyah H. Tambunan; Nugroho A. Suyanto; . Harmen
Jurnal Keteknikan Pertanian Vol. 14 No. 2 (2000): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.014.2.%p

Abstract

Dielectric heating has received a lot of attention recently. Microwave heating, however, has the problem of noticeable hot and cold spots within a food. Radio frequency (RF) has the potential to overcome this problem because of its longer wavelength and greater penetration depth, which would lead to more uniform distribution of the electric field and thus a more uniform temperature distribution. The dielectric properties are the measure of a sample's response to an electromagnetic field, which vary significantly with frequency, temperature, moisture, and salt content. The potential of a medium to respond to dielectric heating can be characterized by its dielectric properties, which can be strong functions of frequency and temperature. This experiment is aimed to design and test the performance of a measurement apparatus for the dielectric properties, using the Q-meter method.
Design of Trickle Irrigation System for Peppers (Capsicum annum var. Longum L.) at Resinda Project, Karawang Elphyson T; Nora H. Pandjaitan; . Prastowo
Jurnal Keteknikan Pertanian Vol. 14 No. 2 (2000): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.014.2.%p

Abstract

Trickle irrigation is an irrigation method which can give continuous water drops at the root zone. The main components of Trickle Irrigation System are  : emitter. lateral pipe, manifold pipe, main pipe, water pump and other supporting components.The design is using point source type of emitter. Each emitter serves 4 pepper plants. The total power consumption at pump station III is 8.4 KW. The total operation of pump station I is 752.I hrs/ season, pump station II is 2256.2 hrs / season and pump station III 1504.I hrs / season.
Teknik Rekayasa Pemadatan Kayu II : Sifat Fisik dan Mekanik Kayu Agatis (Agathis lorantifolia Salisb.) Terpadatkan dalam Konstruksi Bangunan Kayu Sulistyono .; Naresworo Nugroho; Surjono Surjokusumo
Jurnal Keteknikan Pertanian Vol. 17 No. 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.017.1.%p

Abstract

Pemadatan kayu dapat dilakukan dengan dua langkah utama, yaitu perlakuan perendaman, perebusan dan pengukusan agar kayu bersifat plastis dan perlakuan pemadatan pada arah tegak lurus serat. Proses plastisasi dan pemadatan kayu yang sesuai dapat meningkatkan sifat fisik dan sifat mekanik kayu terpadatkan dan berkualitas tinggi. Kualitas yang dimaksud adalah kemudahan proses pemadatan, stabilitas dimensi, keseragaman dan peningkatan kekuatan papan kayu, kehalusan corak permukaan papan dan fiksasi permanen.
Particle Size Effect in Model Retaining Wall on Passive Mode with Granular Material . Erizal; Toshinori Sakai
Jurnal Keteknikan Pertanian Vol. 14 No. 2 (2000): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.014.2.%p

Abstract

This paper presented a particle size effect on model retaining wall by comparing the experimental and finite element analysis. The experiments were conducted with air-dried Toyoura sand and Soma sand plane strain condition, both sand are standard sand in Japan. The wall was oved horizontally into sand. The hights of sand mass in these experiments were 5 cm, 10 cm, and 15 cm. The finite element analysis employed a constitutive model in which non-associated strain hardening-softening elasto-plastic materila was employed. This analysis introducted the effect of shear band thickness. The result obtained from the finite element analysis showed a good agrement with the results obtained from the experimental investigation. From both experimental and analytical results, there was evident of particle size effect due to shear banding.
Teknik Rekayasa Pemadatan Kayu II : Sifat Fisik dan Mekanik Kayu Agatis (Agathis lorantifolia Salisb.) Terpadatkan dalam Konstruksi Bangunan Kayu Hermantoro .; B. I. Setiawan; S. Hardjoamidjojo; M. H. Bintoro
Jurnal Keteknikan Pertanian Vol. 17 No. 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.017.1.%p

Abstract

The successful application of pitcher irrigation system has motivated to investigate the pitcher as a fetigation system. The experiment was conducted at Leuwikopo Experiment Station, Agricultural Engineering Departemen, Bogor Agricultural University. The main objective of this study is to study the effectiveness of pitcher fertigation system on bushes pepper crops. The result shows that the pitcher wall is capable to release NPK solution. Diffusion rate of fertilizer solution was measured as affected by the concentration inside and outside of the pitcher. The soil moisture distribution in the soil is sufficient to transfor the solution available for crops development. Concentration of Phosphate (P) and Potassium (K) decrease laterally and the Nitrogen (N) tends to accumulate homogeneously in moist part around the pitcher.

Page 30 of 63 | Total Record : 623

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