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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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UJI KINERJA ALAT PEMECAH BENIH KELAPA SAWIT Prastyo Agung Hanang; Tamrin Tamrin; Oktafri Oktafri
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 menguji kinerja alat pemecah benih kelapa sawit dan mengetahui persentase lepas kernel utuh.  Penelitian ini menggunakan 3 ukuran benih kelapa sawit dengan 3 ulangan untuk setiap perlakuan.  Benih kelapa sawit yang digunakan berukuran kecil, sedang, dan besar.  Dan dengan menggunakan 3 jarak clearance yaitu 10 mm, 12 mm, dan 14 mm.  Penelitian ini menggunakan 6 parameter pengamatan yaitu pecah cangkang < 50%, pecah cangkang > 50%, lepas kernel utuh, pecah kernel, kernel tergores, dan benih lolos.  Hasil penelitian yang telah dilakukan menunjukan bahwa parameter lepas kernel < 50% untuk ukuran benih kecil yaitu 6%, sedang 5%, dan besar 11%.  Lepas kernel > 50% untuk ukuran benih kecil yaitu 3%, sedang 5%, dan besar 16%.  Lepas kernel utuh untuk ukuran benih kecil yaitu sebesar 65%, sedang 73%, dan besar 63%.  Pecah kerner untuk ukuran benih kecil yaitu 11%, sedang 3%, dan besar 3%.  Kernel tergores untuk ukuran benih kecil yaitu 15%, sedang 11%, dan besar 5%.  Benih lolos untuk ukuran kecil yaitu 0%, sedang 3%, dan besar 1%.  Sedangkan untuk konsumsi bahan bakar pada ukuran benih benih sebesar 210 ml/1000 – 269 ml/1000 biji.Kata Kunci: Pemecah Benih Sawit; Benih Sawit; Kernel.
CHEMICAL CHANGES AND SHELF LIFE FRUIT SALAK PONDOH (Salacca edulis REINW) DYNAMIC STORAGE IN THE AIR - CO2 Kris Aji Adirahmanto; Rofandi Hartanto; Dwi Dian Novita
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 3 (2013)
Publisher : The University of Lampung

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Abstract

Salak (Salacca edulis REINW) is an the original fruit from Indonesia. One of the most popular salak varieties is pondoh. The agribusiness opportunity of salak pondoh  is quite profitable, and therefore it is needed special handling to withstand and prolong shelf life. This study was conducted at the Laboratory of Bioprocess Engineering and Post Harvest Agricultural Engineering Department Agriculture Faculty, University of Lampung, October until December 2011. Treatment was carried out on 4 jars with CO2 gas discharge and air,and two temperature treatments, room temperature and cold temperature (10-12oC). The observed data rate of respiration, measurement of total dissolved solids and the calculation of the level of acidity. The results showed that (1) the measurement of respiration rates was fluctuate at the cooler temperatures storage than at room temperature, (2) The total dissolved solids of the two temperatures treatments were not  different, (3)  the level of acidity in the cold storage higher than at room temperature (4) storage temperature and composition was of the air - CO2 greatly influenced the shelf life and chemical changes. Keywords:Dynamic storage, Shelf life, Respiration,  Temperature, and Salak pondoh.
UJI KINERJA PENJEMURAN GABAH PADA PARA-PARA MEKANIS DENGAN TIGA KONDISI LINGKUNGAN Setiawan, Mahendra Dwi; ., Tamrin; Lanya, Budianto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 1 (2014)
Publisher : The University of Lampung

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Abstract

Traditional grain drying is a practical way of drying grain, cheap, simple and commonly used by farmers.  Grain is spread on the floor which causes grain mixed rock and dirt around the drying floor.  Disadvantages in traditional grain drying are it requires a lot of manpower to spread, to flip back and to collect the grain, and requires large floor for drying.  On the other hand, grain drying using mechanical rack has the advantage that it avoids some of the grain that is not mixed with rock and dirt while drying, shorten the drying time, and easily move the grain when it rains. The purpose of this study was to test the performance of mechanical dryer.  The experiments were set up with drying treatment at 80 cm above the surface of the cement floor, on top of grassy land surface, and on the surface of rocky land with 4 cm thick of sample. The parameters measured in this study were consisted of drying time, moisture content, drying rate, energy of radiation received, the energy to evaporate the water and heats of the material, and drying efficiency. The results of research on the treatment of three environmental conditions indicated that. The average water content was 13.90% wb, 13.82% wb, and 13.98% wb respectively for the surface of the cement floor, on top of grassy land surface, and on the surface of rocky land. The average drying rates in this study were 0.494% /h for the surface of cement floor, 0.487% /h for on top of grassy land surface, and 0.534% /h for on the surface of rocky land.  Drying time in this study were 10 - 11 hours with an average radiation energy received on this experiment at 614.42 Watt/m2. Drying efficiency of each treatment were 12.58%, 12.43%, and 13.72% respectively for the surface of the cement floor, on top of grassy land surface, and on the surface of rocky land. From the observations and calculations derived drying over the surface of cement floor, on top of grassy land surface, and on the surface of rocky land are recommended for drying using a mechanical rack dryer. Keywords: Drying, grain, mechanical rack
THE EFFECT OF DIFFERENT ROTATIONAL SPEED (RPM) DISC MILL TOWARD THE UNIFORMITY INDEX OF BROWN SUGAR Kharisma, Novi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 3 (2014)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (299.342 KB) | DOI: 10.23960/jtep-l.v3i3.%p

Abstract

The aims of this researchwere to find out the effect of different rotational speed of discmill to the size spreadingand uniformity index of brown sugar and to knowthe optimal rotational speed of disc mill producing size of 0,8to 1,2mm. The parameters observed were water content, fineness modulus (FM), uniformity index, grain yield,bulk density, and color. The research was conducted at five variations of rotational speed which were 800, 900,1000, 1100, and 1200 rpm with 1500 g sample for each variations.The results show that the water content ofbrown sugar is between 1,30 and 1,76%, the fineness modulus is around 1,99 to 4,74, the particle size is around0,41 to 2,79mm, the highest grainyield reaches 45,32%atactual speed of 900 rpm, and the range of bulk densityis about 721,07 to 740,40 kg/m3. The color of the middle fraction compared with commercial sugar is notsignificantly different. The color indexes of middle fraction in each treatment are IRED 0,41 to 0,43, IGREEN around0,35, and IBLUE 0,22 to 0,24. Based on the analysis of variance and Duncan’s method (α < 0,05) show that therotational speed (rpm) significantly affects to the particle size, fineness modulus, and grain yield, but not to thewater content, bulk density and color.
DESIGN OF MICRO CLIMATE DATA ACQUISITION SYSTEM BASED MICROCONTROLLER ARDUINO ON GREEN HOUSE Putri, Heidi Yanti Anggraeni
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 1 (2015)
Publisher : The University of Lampung

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Abstract

Micro climate (temperature, humidity and solar’s intensity) plays animportant role on growth anddevelopment ofplants.However,it is difficult to obtainthemicro climate data continuously. An automatic data acquisition systemis a such promising soluticts to this problem. The aimof this researchwas tomakemicro climate data acquisitionsystem in real time and save it into computer’smemory. It consists of five stages included system design, sensorcalibration, systemanalysis,data acquisition, and systemtesting. MicrocontrollerArduinoUNO based acquisitionsystem designed has several inputs, i.e. three DHT11 temperature and humidity sensors and a light dependentresistor (LDR). The outputs of this system were displayed on the LCD, and on the PC using virtual instrumentengineeringworkbench (LabVIEW) softwere, then the data were stored inMicrosoft Excel. The average error oftemperature sensor for eachDHT11 comparedwith alcohol thermometer readingwas 0,8oC forbothDHT11-(a)and -(b), and 0,2 oC DHT11-(c). The average error of relative humidity (RH) sensor for each DHT11 comparedwith Cole Palmer’s termocopel was 14,63%for DHT11-(a), 16,63%for DHT11-(b), and 11,13%for DHT11-(c).The light intensity can be successfullymeasured using LDR voltage with an error of ± 8.98%and R of 0.9926.Keywords:Data acquisition system, greenhouse,LabVIEW,micro climate,microcontroller ArduinoUNO
THE EFFECT OF LIGHTING LENGTH WITH LED AND FLUORESCENT LAMPS COMBINATION ON THE GROWTH AND PRODUCT OF PAKCOY (Brassica rapa L.) WITH WICK SYSTEM HYDROPONICS Lindawati, Yesi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (750.282 KB) | DOI: 10.23960/jtep-l.v4i3.%p

Abstract

This research aimed to find out the lighting length of the combination LED and fluorescent lamps combined,suitable to growpakcoy (Brassica rapa L.)withwick systemhydroponics. The research used five treatments: sunlighting as a control (P0), and artificial lighting of 36-watt LED combined with 42-watt fluorescent lamps. Sunlighting represented a conventional cultivation, with normal lighting period (±12 hours per day), while theartificial lighting consisted of four different lighting lengths per day: 8 hours (P1), 12 hours (P2), 16 hours (P3)and 20 hours (P4). The artificial lighting experiments were placed in boxes as the growth chambers, while theregular sunlighting treatmentwas placed inan outdoorminigreenhouse. Each treatment consisted of four plants,so there were 20 plants in total. The results showed that 20-hour treatment of 36-watt LED lamp plus 42-wattfluorescent lighting (P4) was the best among the other artificial lighting treatments, but still less optimal ascompared to the treatment of natural sun lighting (P0). The plants grew in treatmentP4 still showed etiolating,indicating possibility of using higher power than 36-watt LED lamp and 42-watt fluorescent, although the lengthof lighting reached 20 hours. Yet, in termof quality, the mineral/ash content of all treated plants was notmuchdifferent.Keyword : LED lamp, fluorescent lamp, lighting, pakcoy,wick systemhydroponics.
PENGARUH PENGGUNAAN BEBERAPA WARNA LAMPU NEON TERHADAP PERTUMBUHAN TANAMAN KAILAN (Brassica oleraceae) PADA SISTEM HIDROPONIK INDOOR Dea Gusti Dini Alhadi; Sugeng Triyono; Nugroho Haryono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 1 (2016)
Publisher : The University of Lampung

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Abstract

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh beberapa warna lampu neon terhadap pertumbuhantanaman kailan dengan menggunakan sistem hidroponik indoor.  Penelitian ini menggunakan lima level perlakuandengan faktor tunggal yaitu satu perlakuan dilakukan di dalam greenhouse dengan penyinaran cahaya mataharialami, dan 4 perlakuan dilakukan di dalam ruang penanaman di bawah cahaya buatan dari lampu neon.  Warnalampu neon yang digunakan untuk 4 perlakuan yaitu merah, biru, kuning, dan putih.  Di dalam ruang penanamanlampu harus selalu menyala untuk menyinari tanaman tanpa masa gelap.  Setiap perlakuan terdiri dari 3 tanaman,total 15 tanaman.  Hasil penelitian menunjukkan pertumbuhan vegetatif dan hasil panen tanaman kailan untukperlakuan lampu neon berwarna putih lebih baik dibandingkan dengan hasil perlakuan lampu neon berwarnakuning, lampu neon berwarna biru dan lampu neon berwarna merah yang berada di dalam ruangan, tetapi masihbelum cukup optimal jika dibandingkan dengan perlakuan di greenhouse (penyinaran cahaya matahari).Kata Kunci: Warna lampu neon, sistem hidroponik dalam ruangan, kailan.
PENGARUH PERBANDINGAN MOLAR DAN DURASI REAKSI TERHADAP RENDEMEN BIODIESEL DARI MINYAK KELAPA (Coconut Oil) Risa Inggit Pramitha; Agus Haryanto; Sugeng Triyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 3 (2016)
Publisher : The University of Lampung

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Abstract

This study aims to determine the effect of the molar ratio of oil : methanol and duration of the reaction on theyield of biodiesel produced from palm oil transesterification. The transesterification reaction is carried outusing coconut oil at 60 °C and 0.5 grams of NaOH catalyst. The method is a completely randomized design witha combination of two factors, namely the molar ratio and the duration of the reaction. The molar ratio consistsof four levels (1: 3, 1: 4, 1: 5 and 1: 6), while the duration of the reaction is composed of three levels (15, 30, and60 minutes). Parameter observations include yield, density, and viscosity of biodiesel produced. Each unit ofexperiment was performed using 100 ml of coconut oil and each treatment was repeated three times. Theresults showed that duration factor significantly influence the yield and viscosity of biodiesel, while the molarratio factor significantly influence the viscosity of biodiesel. Interaction of these factors, however, do not affectparameters observed. The highest yield of biodiesel (75.56%) resulted within duration of 60 minutes andthe lowest (60.27%) on within duration of 15 minutes. Biodiesel produced has a density of 0.86 to 0.87 g/ml(complies SNI), and a viscosity of between 3.40 to 4.55 cSt
Evaluation Of Tertiary Levels Irrigation Performance Metro City Technical Unit Of Irrigation Sekampung Batanghari Irrigation Areas Nur Zun Viqhy; R.A Bustomi Rosadi; Nugroho Haryono; oktafri -
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

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Abstract

This study aimed to determine the effectiveness of performance irrigation at tertiary level in technical unit irrigation Metro city of Sekampung Batanghari irrigation areas.  The study was conducted at tertiary level irrigation in sekampung Batanghari irrigation areas on KBH 5 Ki 2 (upstream), KBH 6 Ki (middle), and KBH 7A Ki (downstream). The instrument that used in this research were current meter, stopwatch, Sekampung Batanghari irrigation areas map, and secondary of data.  The study was conducted using secondary data collection methods and measurement directly on the field.  The result showed that (1) the performance of irrigation in UPT Metro city irrigation were less effective that  showed from the value of the irrigation complexity is quite simple, (2) the efficiency of water delivery at tertiary level irrigation in metro city that classified as unoptimal, there is 81,23 % and still under the preliminary draft, (3) the overall irrigation performance in the tertiary level of UPT Metro city still low. Keywords: effectiveness of performance, irrigation, Metro city, Sekampung Batanghari
UNJUK KERJA MESIN PEMOTONG PADI (PADDY MOWER) SAAT PEMANENAN PADI (Oryza sativa L.) DI LAHAN BASAH Siti Anisa; Siti Suharyatun; Oktafri Oktafri; Sandi Asmara
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 7, No 2 (2018): Agustus
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1029.438 KB) | DOI: 10.23960/jtep-l.v7i2.97-105

Abstract

Pemanenan padi secara tradisional memerlukan banyak tenaga pemanen.  Penggunaan alat pemanen tradisional juga menjadi salah satu penyebab kehilangan hasil panen yang cukup tinggi.  Penggunaan alat mesin pemanen padi dapat dilakukan untuk memecahkan permasalahan tersebut.  Salah satu alternatif mesin yang dapat digunakan untuk memanen padi di lahan yang sempit/bergelombang adalah mesin pemotong padi (paddy mower).  Tujuan dari penelitian ini untuk mengetahui kapasitas kerja mesin, kebutuhan bahan bakar,  tingkat kehilangan padi (losses), serta analisis ekonomi penggunaan mesin pemotong padi tipe GLX 328-RH untuk pemanenan. Penelitian ini terdiri dari tiga tahapan utama, yaitu persiapan mesin dan lahan sawah di pekon Talang Padang, Kabupaten Tanggamus, pengujian performansi mesin dan analisis data.  Parameter yang diamati adalah kapasitas kerja mesin, persentase kehilangan gabah, dan konsumsi bahan bakar. Hasil penelitian menunjukan bahwa kapasitas kerja mesinpaddy mower dengan kecepatan pemotongan RPM 3863 (0,015 ha/jam) dan RPM 5000 (0,029 ha/jam) lebih tinggi dibandingkan dengan sabit (0,011 ha/jam).  Meningkatnya kecepatan pemotongan cenderung menurunkan losses gabah.  Losses pada RPM 1824 = 1,44%, RPM 3863 = 1,12 % dan RPM 5000 = 0,66%.  Konsumsi bahan bakar yang dibutuhkan pada RPM 1824 = 95,83 l/ha, RPM 3863 = 56,83 l/ha dan RPM 5000 = 42,83 l/ha.  Nilai Break Event Point (BEP) penggunaan mesin paddy mower sebesar 2,27 ha/thn.  NPV mesin paddy mower sebesar Rp. 2.881.194,18/thn, B/C Ratio mesin paddy mower sebesar 1,10, dan IRR mesin paddy mower sebesar 83,98%.Kata Kunci:Padi, Mower, Unjuk Kerja Mesin, Losses, Kapasitas Kerja

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