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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Published by Universitas Lampung
ISSN : 2302 559X     EISSN : 2549 0818     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Engineering
Jurnal Teknik Pertanian Lampung or Journal of Agricultural Engineering (JTEP-L) is a peer-reviewed open-access journal. The journal invites scientists and engineers throughout the world to exchange and disseminate theoretical and practice-oriented researches in the whole aspect of Agricultural Enginering including but not limited to Agricultural Mechanization, Irrigation, Soil and Water Engineering, Postharvest Technology, Renewable Energy, Farm Structure, and related fields. The first issue was published in October 2012 by Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung. Jurnal Teknik Pertanian Lampung has ISSN number 2302 - 559X for print edition on October 10, 2012 then 2549 - 0818 for online edition on January 10, 2017. Jurnal Teknik Pertanian Lampung is issued periodically four times a year in March, June, September, and December. Jurnal Teknik Pertanian Lampung has been indexed by Google Scholar, Crossref, Directory Open Access Journals (DOAJ), and CABI. Since Volume 5 Issue 1 (2016) Jurnal Teknik Pertanian Lampung has been accredited as SINTA 3 by Directorate General of Higher Education (DIKTI). Starting Volume 10 Issue 3 (2021) the journal received accreditation SINTA 2.
Arjuna Subject : -
Articles 1,078 Documents
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THE APPLICATION OF DRIP IRRIGATION SYSTEM ON TOMATO (Lycopersicum esculentum Mill) Setyaningrum, Diah Ayu
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 2 (2014)
Publisher : The University of Lampung

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Abstract

This study aimed to analyze the performance of drip irrigation systems, determine performance of tomato treated under the irrigation systems.Field research was conducted at the Laboratory of Land and Water Resources Engineering; and at the Laboratory ofintegrated field, Faculty of Agriculture, University of Lampung in August 2013 to December 2013.Irrigation systems consisted of main componens: water supplies, Polythilene lateral tube, and emitters. Emitter on every pot, were made of Polythilene (PE) fabric.Pot experiment consisted of 32 pots, divided into two groups, a group of 16 pots was treated with surface drip irrigation system and the other half was treated with subsurface drip irrigation system.  Variables observed to the irrigation systems wereflowrate, coefficient variance (CV), emition uniformity (EU).  Variables observed to the plant were evapotranspiration (ETc), Kc, Soil moisture, water consumption, plant growth, and yield.  The results showed that the surface drip irrigation system had flowrate of 0.96 liter/hour, CV of 0.41 and EU of 54.85%, while the subsurface drip irrigation system had flowrate of 1.08 liter/hour, CV of 0.41 and EU of 56.43%.  Plants performance treated with surface drip irrigation system showed total crop evapotranspiration (ETc) of 490,8 mm,  while subsurface drip irrigation system showed total crop evapotranspiration (ETc) of 580,9 mm.Higher crop evapotranspiration of subsurface drip irrigation system was due to better plant growth in the subsurface drip irrigation system.  This was also shown by higher crop coefficience (Kc) of subsurface drip irrigation system.Keywords : drip irrigation, tommato, evapotranspiration, surface, sub-surface
THE EFFECT OF TILLAGE SYSTEM AND HERBICIDE ON LOSSES OF NUTRIENT AND ORGANIC MATTERS DUE TO EROSION IN LABORATORY OF LAPANG TERPADU FACULTY OF AGRICULTURE UNIVERSITY OF LAMPUNG Burhannudin, Burhannudin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 3 (2014)
Publisher : The University of Lampung

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Abstract

Land degradation is a serious problemwhich can reduce the land fertility and productivity. Themain cause of thedegradation is due to erosion phenomenon. It causes the fertile top soil losses which is good for plant growth.Tillage farming is particularly convinced as the prime cause on soil erosion. This research aims to determiningthe effect of tillage systemand herbicide to predict the losses of nutrients and organicmatter due to erosion. Thisexperiment was conducted at the Laboratory of Lapang Terpadu and Laboratory of Soil Science, Faculty ofAgriculture, University ofLampung inMay toAugust 2014. The experimentwas design as a factorial in completelyrandomized block design (RCBD) consisting of two factors, namely the tillage systemand herbicidewith 4 (four)repetitions. The results showed that the treatment of soil tillage, herbicides, and the combination of themdid notsignificantly affect the concentration ofN (total), K (exchangable), Ca (exchangable),Mg (exchangable), and theC (organic)matter in sediment.While theP (available), only the tillage systems that provided significant effect. Ata minimum tillage system P (available) concentration was significantly higher than the conventional tillagesystem. This was due to the nature of the immobil phosphorus, itmean the phosphorus in the soil remains in thetop soil otherwisemechanically inserted into the sub soil. The limited tillage onminimumtillage systems causesphosphorus remain inthe top soil, so thatwhen erosion occurs phosphorus losses inminimumtillage system willbe higher thanin conventional tillage. The conventional tillage systemcauses loss of P (available) of 0,016 kg/haand the minimumtillage systemcauses loss of P (available) of 0,01 kg/ha.
THE PRODUCING OF ANALOG RICE BASED ON BANANA FLOUR (Musa paradisiaca) Yudanti, Yolanda Risma
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 2 (2015)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.891 KB) | DOI: 10.23960/jtep-l.v4i2.%p

Abstract

Analog rice is one of the solutions that can be developed to overcome the problems of food security both in termsof the use of a new food source or for diversification of food. The purposes of this study were to determine theeffect of starch as a binder in the manufacture of analog rice and to examine the properties of analog rice in thetermofmoisture content, grains diameter,water absorption, bulk density, and expantion ability. Analog ricewasperformed by using a set of analog rice grain making machine (granulator). Five different compositions ofanalog rice weremade and tested. The formulas are pure bananas flour rice (100%banana flour) and mixed ofbanana flour and tapioca flour with ratio of 95 : 5, 90 : 10, 85 : 15 and 80 : 20. The results show that the watercontent of analog rice is between 10,41%and 13,08%, water absorption range from 36,98%to 64,32%, bulkdensity of 0,766 g /cm3 to 0,794 g /cm3, and expantion ability range from5,4%to 14,4%. The addition amountof the flourmixture causes enlargement of the grain diameter.Keywords: banana flour, tapioca flour, analog rice, granulator, diversification.
DESIGN EVALUATION OF BROILER HOUSE IN REJO BINANGUN, KECAMATAN RAMAN UTARA, KABUPATEN LAMPUNG TIMUR Nadzir, Nadzir
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 4 (2015): Special Edition
Publisher : The University of Lampung

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Abstract

The study aims to identify problems in broiler housnd evaluate design to increase productivity of broiler. The study was done from May – Juni 2015 at broiler house at Rejo Binangun, Kecamatan Raman Utara, East Lampung. Parameter observed and measured is: (1) the condition house in the study locations, including material house and size dimensions house; ( 2 ) environment parameter, includring to scatter temperature and RH, and distribution wind speed around the house; ( 3 ) comfort house parameter, including position broiler and mortality broiler; ( 4 ) ergonomic parameter; ( 5 ) evaluation design house. The result shown that design of broiler house was currently good, but need to repair on the floor and the stair. Broiler house performance was good, seen from broiler growth that reached standard weight, and mortality rates at 4 % or 60 broiler. Keywords: Design Broiler House, Design Evaluations, Broiler
UJI KINERJA ALAT PENGHEMAT BAHAN BAKAR MINYAK OTOINFUS PADA MOTOR BENSIN Thoriq, Ahmad
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 1 (2017)
Publisher : The University of Lampung

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Abstract

Pemanfaatan air sebagai bahan bakar menggunakan teknologi HHO generator dan elektrolisa air membutuhkan peralatan yang komplek dan mahal. Alternatif lain adalah menggunakan kit pemecah air dengan memanfaatkan panas gas buang yang selanjutnya diberi nama Otoinfus. Penelitian ini bertujuan menguji pengaruh dari penggunaan Otoinfus pada motor bakar bensin terhadap laju konsumsi bahan bakar, emisi gas buang, torsi dan daya. Penelitian diawali dengan persiapan alat ukur konsumsi bahan bakar yang berfungsi untuk mangamati penurunan bahan bakar. Selanjutnya pemasangan Otoinfus, uji konsumsi bahan bakar, pembebanan pada berbagai kecepatan putar, uji emisi gas buang, dan pengukuran konsumsi air. Hasil penelitian menunjukkan penurunan konsumsi bahan bakar bervariasi berdasarkan putaran mesin dan penurunan signifikan (sebesar 20,46%) terjadi pada putaran mesin 3600 rpm. Penurunan senyawa gas buang signifikan terjadi pada gas O2 yaitu sebesar 63,99% dan minimum pada NOx yaitu sebesar 7, 14%. Penggunaan Otoinfus juga terbukti dapat meningkatkan torsi dan daya maksimum terjadi pada kecepatan putar motor bensin 2100 rpm yaitu sebesar 34,18% dan 33,93%  sedangkan pada kecepatan putar motor bensin 2400 rpm pemasangan Otoinfus tidak berpengaruh terhadap perubahan torsi dan daya.
ANALISIS SPEKTRUM UV-VIS UNTUK MENGUJI KEMURNIAN KOPI LUWAK Sri Waluyo; Fipit Novi Handayani; Diding Suhandy; Winda Rahmawati; Cicih Sugianti; Meinilwita Yulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 2 (2017)
Publisher : The University of Lampung

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Abstract

Penelitian ini bertujuan untuk membangun dan menguji model untuk identifikasi kemurnian kopi asli Luwak. Bahan yang digunakan adalah 100% kopi Luwak dan kopi Luwak yang dicampur dengan kopi Robusta dengan perbandingan pencampuran 90%: 10%, 80%: 20%, 70%: 30%, 60%: 40%, dan 50%: 50%. Pada penelitian ini model dibangun dan diprediksi menggunakan metode soft independent modeling of class analogy (SIMCA) dengan taraf signifikan10%, kemudian menghitung tingkat akurasi (AC), sensitivitas (S), spesifisitas (SP), dan false alarm rate (FP) menggunakan perhitungan confusion matrix. Dari proses Hotelling T2 elipse 95 sampel, diperoleh dua model untuk mengelompokkan kopi Luwak asli (SLWK) dan kopi campuran Luwak Robusta (SLWKR). Dari uji model didapat nilai akurasi (AC) 48,48%, sensitivitas (S) 50,00%, spesifisitas (SP) 33,33%, dan false alarm rate (FP) 66,67%.Kata Kunci : Kopi Luwak; Robusta; UV-vis spectroscopy; Pemodelan; Validasi
THE INFLUENCE OF GAS COMPOSITION ON THE RESPIRATION RATE OF BANANA (Var. Janten) ON MODIFIED ATMOSPHERE STORAGE Tito Yasin; Rofandi Hartanto; Agus Haryano; Tamrin .
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 3 (2013)
Publisher : The University of Lampung

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Abstract

Respiration rate was generally used as an indicator of the rate of metabolism for agricultural comodities.  The research aimed to determine the influence of gas composition to respiration rate and the changes of total acid, sweetness level and hardness level of banana (var. Janten) that was storaged at two different temperatures (room temperature (29 oC) and cold temperature(15 oC)).  This research was conducted by modifying the gas composition(O2, CO2, and N2) in the storage jar.  The results showed that respiration rate of banana tended to increase with time at both temperatures.  Total acid declined steadily at room temperature but fluctuated at cold temperature.  Sweetness level showed an increase and the hardness level showed a decrease with time at both temperatures during the storage process.  Modified atmosphere was able to extend shelf life of banana to 12 days at room temperature and 26 days at cold temperature.  The best gas composition for banana (var. Janten) was 4% O2, 5% CO2, and 91 % N2 (by volume). Keywords:Modified Atmosphere, Gas Composition, Respiration Rate, Total Acid, Sweetness Level, Hardness Level .
MODIFIKASI DAN UJI KINERJA MESIN PEMARUT SAGU TIPE SILINDER Ahmad Thoriq; Agus Sutejo
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 7, No 1 (2018): April
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.816 KB) | DOI: 10.23960/jtep-l.v7i1.35-40

Abstract

Pada penelitian sebelumnya terungkap bahwa pengguna mesin pemarut sagu tipe TPB 01 di Papua mengeluhkan kesulitan mengencangkan sabuk v-belt, adanya kontak mata parut dengan landasan pada bagian pemasukan batang sagu dan banyaknya bagian batang sagu yang tidak terparut sempurna. Penelitian ini bertujuan untuk memperbaiki kinerja mesin pemarut sagu tipe TPB 01 melalui modifikasi beberapa bagian mesin. Metode yang digunakan pada penelitian ini yaitu melalui pendekatan rancangan teknik yang terdiri atas indentifikasi masalah, perumusan konsep modofikasi, gambar teknik, uji fungsional dan uji kinerja. Berdasarkan identifikasi masalah, bagian mesin yang dimodifikasi adalah memindahkan tenaga penggerak ke dudukan yang terletak di bagian samping mesin dan menambahkan lempengan nilon 5 mm pada landasan bagian pemasukan. Mata parut akan kontak dengan nilon namun karena karakteristik teknik dari nilon yang lebih lunak dibandingkan dengan mata parut menyebabkan nilon terkikis dan membentuk alur mata parut. Hasil pengujian mesin hasil modifikasi menunjukkan kapasitas pemarutan sebesar 571,15  kg/jam dengan efesiensi pemarutan sebesar 95,32%, tingkat kehilangan empulur sagu berupa parutan yang tertinggal pada mesin sebesar 4,68% dan tidak terdapat batang sagu yang tidak terparut. 
BIOFILTRATION KINETICS OF TOFU INDUSTRY WASTEWATER USING OF ZEOLITE MEDIUM Rodiyanti Rodiyanti; Sugeng Triyono; Nugroho Haryono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 3 (2014)
Publisher : The University of Lampung

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Abstract

This researchwas aimed to investigate reactionkinetic of tofu industrywastewater using zeolitemedium. A staticfilter reactor using zeolitemediumwas constructed to carry out this research. Tofuwastewaterwas resirculatedthrough themedium with various hydraulic retention times (HRT): 0, 3, 6, 12, 24, 36, and 48 hours. First orderreactionwas then applied on this kinetics. The results showed that pHincreased from4.1 to 8.02. Total P in thewastewater decreased from12,1mg/L to 6,91mg/L (42%reduction),while in themedia totalP increased from3,04 mg/L to 5,97 mg/L within 48 hours of filtration. N-NH4+ decreased from 64.184 mg/L to 12.85 mg/L(79.9%reduction). Total Solids decreased from 10.404mg/L to 4003m(61.5%reduction).
THE EFFECT OF SCREWANGEL AND COMMODITIES TO PERFORMANCE OF SCREWCONVEYOR ON TWO VARIATIONS ANGULAR SPEED Imanda, Jordhy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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Abstract

The aims of this research were to make and test the material transportation device of grains dan legumes(corn, soybean, and green beans) screw type (screw conveyor), to find the effect of screw angle (α) andcommodities to performance of screw conveyor, and to find out the best screw angle (α) and commodity toperformance of screw conveyor for each angular speed those are 40 and 54 rpm. This research has beenconducted on December 2014 until February 2015. This research was conducted in two phases, those arecreating device which conducted in CV WIDODO, Kuripan village, West Teluk Betung sub-distric, BandarLampung and testing was conducted at the Laboratory of Power and Agricultural Machinery, AgriculturalEngineering Department, Faculty of Agriculture, University of Lampung. This research was conducted inthree different screw angles, those are 30°, 45°, dan 60°. Later, these three different screw angles is subjectedto three repetitions and in two different angular speed (rpm), those are 40 rpmand 54 rpm. The results showthat the best working capacity of screw conveyor on the variation of screw angle and commodities for eachangular speed for 40 rpm on soybean and 30° screw angle is about 178,6 g/s, while for 54 rpm on greenbeans and 30° screw angle is about 238 g/s. It can be indicate that speed rotation (rpm) and screw angelaffect significantly on screw conveyor;s working capacity.Keywords : Screw conveyor, screw angel, grains and legumes

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