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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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Determination of Hydrodynamic Dispersion Coefficient of Solute Transfort in Soil Using Inverse Problem Method Hermantoro .; B. I. Setiawan
Jurnal Keteknikan Pertanian Vol. 16 No. 1 (2002): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.016.1.%p

Abstract

Solute transport in porous medium is affected by two parameters i.e : 1) average velocity of solute particle, and 2) solute dispersion. Theoretically, the solute transport can be describes by Convective Dispersion Equation, when the methods to determine D in this paper we present a modified method of inverse problem to calculate D. The results indicated that the inverse problem much or less matched with the analytical solution.
During vegetative growth period, sugarcane required a lot of water but decreasing afterward and minimum at ripening period. Sugarcane water requirement was calculated by radiation method and USDA (1969) method was used to determinate effective rainfall. Average of monthly actual evapotranspiration (ETa) was calculated by the available soil water index. The total of water requirement of sugarcane (1-12 month) was around 37.38 mmlmonth to 143.22 mmlmonth. The highest water requirement was found at Herlika Asriasuri; Nora H Pandjaitan
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

During vegetative growth period, sugarcane required a lot of water but decreasing afterward and minimum at ripening period. Sugarcane water requirement was calculated by radiation method and USDA (1969) method was used to determinate effective rainfall. Average of monthly actual evapotranspiration (ETa) was calculated by the available soil water index. The total of water requirement of sugarcane (1-12 month) was around 37.38 mmlmonth to 143.22 mmlmonth. The highest water requirement was found at age of 4 to 9 month, while the lowest was in the ripening period. Accordingly drip irrigation should be operated at maximum water use of about 3.96 mm/day, or by sprinkle irrigation not less than 118.70 mm/mounth.
Performance of Grain Cleaner APB-M1 in Cleaning of Maize Grain Tabran M. Lando; Yamin Sinuseng; Ramlah Arief
Jurnal Keteknikan Pertanian Vol. 13 No. 1 (1999): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.1.%p

Abstract

The research to evaluate perfornlance of grain cleaner APB-MI was conducted in the Research Institute for Maize and Other Cereals tit the beginning of 1998. Five engine circles were tested: 1200, 1350, 1500, I650 and 1800 rpm with three replications. Bisma variety was used us maize grrrin with 13% moisture content (wet basis) and for each replication the amount was 25 kg. The results showed that power transmission efficiency was at the average of 95.0% on the strainer and 94.2% on the blower. Fuel conszrtnptionwas at the rate of 0,81 //hour with average cleaning capacity of 598 kg/hour.
Baru-baru ini Gustav Grob (1996) mengingatkan lagi prediksi Club of Rome di awal tahun 1970-an bahwa bahan bakar fossil, yang sifatnya meneemarkan lingkungan, dan tak terbarukan kian berkurang keberadaannya dan dalam waktu dekat harus diganti dengan sumber energi terbarukan yang lebih bersahabat dengan lingkungan seperti sumber-sumber energi surya, biomassa, angin, hidro, dll. Ketergantungan kita atas bahan bakar fosil mungkin akan berlanjut sampai beberapa dekade lagi tetapi dalam jumlah yang j Kamaruddin Abdullah
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

Baru-baru ini Gustav Grob (1996) mengingatkan lagi prediksi Club of Rome di awal tahun 1970-an bahwa bahan bakar fossil, yang sifatnya meneemarkan lingkungan, dan tak terbarukan kian berkurang keberadaannya dan dalam waktu dekat harus diganti dengan sumber energi terbarukan yang lebih bersahabat dengan lingkungan seperti sumber-sumber energi surya, biomassa, angin, hidro, dll. Ketergantungan kita atas bahan bakar fosil mungkin akan berlanjut sampai beberapa dekade lagi tetapi dalam jumlah yang jauh lebih kecil dari apa yang di konsumsikan sebelum tahun 2000 seperti terlihat pada Gambar 1 (Grob, 1996)  
Design Digital to Analog Control Equipment Using Computer Jarot Prianggono; Radite PAS
Jurnal Keteknikan Pertanian Vol. 16 No. 1 (2002): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.016.1.%p

Abstract

This study aim to identify and to analyze the behaviour ouput signal from Digital To Analog Converter (DAC) thet combined with motor DC driver. But before the analysis, the design must be conducted. Typical motor can turn clockwise and counter clockwise. Behaviour of servo motor controller was linear, so the sistem can be named by linear motor controller. This study can we used for the research on the mechatronics field, especially on the agricultural engineering.
Modelling Characteristic of Respiration on Artificial Ripening System of Climacteric Fruit Based on Logistic Equation Kem Trimaya Vanani; Sutrisno .
Jurnal Keteknikan Pertanian Vol. 16 No. 1 (2002): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.016.1.%p

Abstract

As perishable products, fruit have limited shelf life that could disturb the supply continuity on the market. A system consists of Cold storage and artificial ripening chamber could be a solution to this problem. Then, a mathematical model overcome the limited experiment time, expenses and technique.Over the past years, respiration models were built mostly by eksponential type of equations or air diffusion. This paper describes respiration models based on logistic growth model. The logistic model described a population growth in a sigmoid curve, which show slow increase at first, then sharpen until it slowed down to certain position influenced by inhibition factor. The accumulation of carbon dioxide of respiration in closed chamber showed the same symptoms. The inhibition factor used in the models is adapted from inhibition constant of Lee et al. (1992) respiration model, which based on enzyme kinetics. The model has successfully estimated climateric peak of Mas banana under three different length of cold storage, compared to secondary data.
A riped jackfruit (Arthocarpus heterophyllus Lamk.) is one of the most popular fruit among tropical fruits, but it has inferior characteristic such as perishable, time consumed to served in fresh condition for peeling, and it consists of something sticky. Therefore a minimal processing must be done. This study is aimed to evaluate the respiration rate and find out the optimum condition for lengthening the storage life of minimally processed jackfruit under a modified atmospheric packaging. Accor Ni Made Sudiari; Sutrisno .
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

A riped jackfruit (Arthocarpus heterophyllus Lamk.) is one of the most popular fruit among tropical fruits, but it has inferior characteristic such as perishable, time consumed to served in fresh condition for peeling, and it consists of something sticky. Therefore a minimal processing must be done. This study is aimed to evaluate the respiration rate and find out the optimum condition for lengthening the storage life of minimally processed jackfruit under a modified atmospheric packaging. According to its respiration pattern, a jackfruit is classified as a climacteric fruit, due to its sudden increase of evaluated C02. The optimum gas composition for MAP is 4-7% 02 and 10-12% C02 with a storage temperature of 5 'C. The MAP of jackfruit using Styrofoam tray and Stretch Film packaging is able to lengthen its storage until 8 days.
Empirical Evaluation of Kostiakov and Philip Infiltration Equation on Greyish Brown Regosol M. Riza Januar; Nora H. Pandjaitan
Jurnal Keteknikan Pertanian Vol. 13 No. 3 (1999): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.3.%p

Abstract

Inmation is important to note because it is related to potentialsurface run-08 jlood, erosion, water storage of soil, and stream discharge especially during dry season. However, because the infiltration equation is valid for certain condition of the land measured, it is important to collect infltartion data on all types of soil manually. This research is mainly to evaluate constants of infltration equation formulated by Kostiakov (constants K and n) and Philip (constants C and D) in relation with initial soil water content. The measurements are on vegetated soil and bare soil.
Water Use Efficiency of Trickle and Sprinkle Irrigation on Chrysant Plants (Chrysantemum sp) . Saprianto; Nora H. Pandjaitan
Jurnal Keteknikan Pertanian Vol. 13 No. 3 (1999): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.3.%p

Abstract

Chrysant plants (Chrysantemum, sp.) as a horticulture vegetation has an estetical and economical value. Irrigation system which is used for Chrysant plants in PT Tecsuco Nusasemesta's green house are sprinkle and trickle irrigations. The water supply has to be equal with the water consumption of the plants in order to get higher water use eflciency. This research tries to calculate water use eflciency of trickle and sprinkler irrigation and its irrigation cost for chrysant plants. Water economical value is higher than before, so water consumption as one of production factor have to be planned in order to get proper benefit for every comodity. One of the methods to get the higher eflciency of water use is irrigation scheduling.
The study on Work Load Calibration by using Step Test and Ergometer test was carried out in order to find the best way 10 calibrate the data measurement and to predict human work load by using heart rate data. This study was conducted on four male subjects. but the data analysis has just been done to three subjects due one of the subject was insufficient performance. The sport tester PE3000 heart rate monitor is used for measuring the heart rate data which will be useful for predicting the work Roni Kastaman; Sam Herodian
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

The study on Work Load Calibration by using Step Test and Ergometer test was carried out in order to find the best way 10 calibrate the data measurement and to predict human work load by using heart rate data. This study was conducted on four male subjects. but the data analysis has just been done to three subjects due one of the subject was insufficient performance. The sport tester PE3000 heart rate monitor is used for measuring the heart rate data which will be useful for predicting the work load on each activity. The linear regression method is also used to predict the work load based on the heart rate data, so that the best alternative scenario data input will be able to determined by comparing the correlation coefficient or coefficient of determination.

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