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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)

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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.

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Articles 1,077 Documents

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RANCANG BANGUN ALAT PENCETAK OPAK PROTOTIPE TEP-01 Wahyu kristian sugandi; Asep Yusuf; Adriana Sofyan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 7, No 1 (2018): April
Publisher : The University of Lampung

Opak merupakan makanan kering dan renyah sejenis dengan kerupuk khas Jawa Barat yang dihasilkan oleh para pengusaha kecil menengah (UKM). Daerah penghasil opak adalah Sumedang, Majalengka, Cirebon, Tasikmalaya, dan Karawang, sehingga terdapat keberagaman produk opak. Saat ini dalam proses pencetakan opak masih menggunakan alat tradisional yang disebut Geplak. Geplak sendiri masih memiliki beberapa kekurangan yaitu diantaranya pada tingkat ketebalan dan ukuran opak yang tidak seragam, untuk itu perlunya dirancang bangun alat pencetak opak. Penelitian ini dilaksanakan di Bengkel Logam, Kayu, Dan Rotan Departemen Teknik Pertanian dan Biosistem – Fakultas Teknologi Industri Pertanian, Universitas Padjajaran. Metode penelitian menggunakan metode rekayasa dengan melalui beberapa tahap proses kegiatan yaitu: perancangan alat pencetak opak, analisis fungsional, analisis struktural, dan analisis teknik. Hasil rancang bangun alat pencetak opak memiliki dimensi, panjang 1400 mm, lebar 850 mm dan tinggi 800 mm. Hasil pengujian alat pencetak opak ini memiliki kapasitas aktual dan teoritis sebesar 3.06 kg/jam dan 4,80 kg/jam, kebutuhan daya operator sebesar 0,837N, dan efisiensi sebesar 63,83 %.Kata kunci: rancang bangun, alat pencetak, opak

PENDUGAAN KEBUTUHAN AIR TANAMAN DAN NILAI KOEFISIEN TANAMAN (Kc) KEDELAI (Glycine max (L) Merril ) VARIETAS TANGGAMUS DENGAN METODE LYSIMETER Tia Yuliawati
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 (278.607 KB)

Production of soybean is unbalanced. Increasing number and need of the population is one causes of soybeansscarcity. One factor needs to be considered in soybean cultivation is crop water requirement. This study aims todetermine thewater requirement of soybean bymeasuring evapotranspiration of soybeanlocal varieties directlyby lysimeter (2x3x1)meters. Fieldobservations carried out attwo lysimeters tomeasure crop evapotranspiration(ETc) variety of Tanggamus and one plot planted with grass as standard evapotranspiration (potential). Theresults showed that total soybeancropwater requirement (ETc) forTanggamus is 490.02mmor 6.3mm/hari andthe total per-phase ETc is 5.4; 4.8; 6.7; 7.9 mm/hari. Soybean crop coefficient values (Kc) in the early growthphase, active vegetative, fertilization or seed pod filling, and maturity for the varieties Tanggamus is 0:48; 0.69;0.9; 0.78.

A STUDY ON LATEX DRYING CHARACTERISTICS WITH DIFFERENCE OF THICKNESS USING GREENHOUSE EFFECT DRYER Zulfikar Akbar
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 1 (2015)
Publisher : The University of Lampung

Latex just been tapped has a high level ofmoisture content. To be useful for production, latex should be dried toreducewater content. Latex drying by rubber farmers is commonly to do conducted in opened areas for 14 dayswith a very thick size of latex. Therefore, we should be solutions to make latex drying faster. This research, latexdryingwas treatment by using greenhouse effect dryerwith difference of thickness. The aims of this researchwasto find out characteristics of latex drying using dimension of greenhouse effect dryer is 150 x 70 x 120 cm. Latexwas coagulated on containers, with dimension of containers is 40 x 10 x 15 cm. Latex was formed with anequipmentwhich intervals of 2, 1.5, and 1 cmand thenslabwas dried. Result of this research, latexwas driedwithgreenhouse for 9 hour/day for 6 days along. Temperatures of greenhouse effect dryer ranged from30 to 500Cwithrelative humidity of approximately 47%. The treatment with thickness of 2, 1,5 and 1 cm has final moisturecontent respectively were 9.53%, 8.96%, and 5.87%bb, and drying acceleration during drying process were0.3773%, 0.4119%, and 0.4445%w/w / day.Keywords :DryingAcceleration, GrenhouseDryer, Latex,Moisture Content, Thickness

THE ANALYSIS OF SATURATED HYDRAULIC CONDUCTIVITY ON YELLOW BAMBOO (Bambusa vulgaris schard Es.J.C) STICK Jenni Aulia Perucha
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

This research aims to determine the value of saturated hydraulic conductivity (Ks) yellow bamboo in varioustreatments as a tool for subsurface irrigation purposes. This research has been conducted on March until April2015. This research was conducted in the Laboratory of Power and Agricultural Machinery, AgriculturalEngineering Department, Faculty of Agriculture, University of Lampung. The Ks of yellow bamboo researchconducted on6 treatments , those are the epidermis andendodermis thatnot scraped( C1 ); layers of the epidermisand endodermis scraped until 0,5 cmthickness ( C2 ); layers of the epidermis and endodermis scraped up as thickas 0,7 cm ( C3 ); layers of the epidermis and endodermis scraped up as thick as 0,9 cm ( C4 ); layers of theepidermis and endodermis scraped up as thick as 1,1 cm ( C5 ); layers of the epidermis and endodermis scrapedup as thick as 1,3 cm(C6 ), thenall treatments is performed in three repetitions and endurance for5weeks.Basedonthe research that has beendone , theKs of yellowbamboowith C1 treatment is 0 cm/sec, C2was 7,24 x 10-8 cm/sec; C3 was 6,87 x 10-8 cm/sec; C4was 8,56 x 10-8 cm/sec; C5was 6,93 x 10-8 cm/sec; and C6was 7,06 x 10-8 cm/sec. It canbe showthat the higher bamboo’swater absorbing ability the higher hydrolic conductivity’s value thatobtained. Whereas, the lower bamboo’s water absorbing ability the lower hydrolic conductivity’s value thatobtained.Keywords : hydraulic conductivity , endurance , yellowbamboo

APLIKASI SISTEM IRIGASI BAWAH TANAH (Sub-Irrigation) DENGAN MEMANFAATKAN LIMBAH CAIR PABRIK KARET SIR 20 SEBAGAI AIR IRIGASI PADA PERTUMBUHAN TANAMAN TOMAT (Lycopersicum Esculentum Mill) Erma Yuswari
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 1 (2016)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.578 KB)

Penelitian ini bertujuan untuk (1) mengetahui dan menganalisis pengaruh pemanfaatan Limcakar (limbah cair karet) sebagai air irigasi pada pertumbuhan tanaman tomat dengan sistem sub-irrigation, (2) mengetahui kebutuhan air irigasi pada pertumbuhan tanaman tomat dengan sistem sub-irrigation, (3) mengetahui pada kolam yang mana air limbah masih dapat digunakan untuk pertumbuhan tanaman tomat dengan sub-irrigation, dan (4) merekomendasikan penggunaan Limcakar sebagai air irigasi bagi tanaman tomat pada sistem sub-irrigation. Penelitian ini menggunakan rancangan faktorial acak lengkap, terdiri dari 2 faktor perlakuan dengan ulangan sebanyak 3 kali. Faktor yang pertama yaitu penggunaan air biasa sebagai kontrol (K0) dan Limcakar (K) terdiri dari kolam rubber trap (K1), kolam anaerob (K2), kolam fakultatif (K3), dan kolam aerob (K4). Faktor yang kedua yaitu pemberian dosis pupuk organik (P) terdiri dari ½ dosis rekomendasi (P1) dan full dosis rekomendasi (P2). Hasil penelitian menunjukkan bahwa Limcakar memberikan respon yang sama dengan penggunaan air biasa dan limcakar tidak mengganggu pertumbuhan tanaman, sehingga keterbatasan air irigasi dapat disuplai dengan menggunakan Limcakar. Rata-rata hasil panen terbanyak pada perlakuan kolam fakultatif dengan dosis pupuk ½ rekomendasi yaitu 1,188 kg/tanaman dan kebutuhan air irigasi pada pertumbuhan tanaman tomat sebanyak 8,49 mm/hr. Kata kunci : Limbah cair karet, Sub-irrigation, Tomat

STUDI PENGGUNAAN UV-VIS SPECTROSCOPY UNTUK IDENTIFIKASI CAMPURAN KOPI LUWAK DENGAN KOPI ARABIKA Cicih Sugianti; Novi Apratiwi; Diding Suhandy; Mareli Telaumbanua; Sri Waluyo; Meinilwita Yulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 3 (2016)
Publisher : The University of Lampung

This study aims to identify the authentication of civet coffee using a Soft independent modeling of class analogy(SIMCA) method and principal component analysis (PCA). The test carried out on the coffee powder measuring0.297 millimeters (mesh 50). Comparison of blend that is samples 1- 50 each 1 g of pure civet coffee, samples51- 60 each 0.9 g civet coffee and 0.1 g arabica coffee, samples 61-70 each 0.8 g civet coffee and 0.2 g arabicacoffee, samples 71-80 each 0.7 g civet coffee and 0.3 g arabica coffee, samples 81-90 each 0.6 g civet coffee and0.4 g arabica coffee, samples 90-100 each 0.5 g civet coffee and 0.5 g arabica coffee. The classification resultsshow SIMCA and PCA methods are able to identify civet coffee mixture. PC 1 explains 75% the variance of dataand PC2 explains 17% the variance of data. Values obtained on SIMCA classification are specificity 76%,sensitivity of 84% and accuracy of 80%, with a value error of 23%.Keywords: Arabica coffee,civet coffee, PCA, SIMCA, UV-Vis spectroscopy.

Analysis Of Soil Water Distribution By Low-Pressure Drip Irrigation Dinna Afriyana; Ahmad Tusi; Oktafri -
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

This study was carried out to determine the effect of low-pressure surface and sub-surface drip irrigation to soil wetting distribution pattern and emission uniformity. The experiment was conducted with gravity drip irrigation system and modified point sources drip-line with polyester (PE) cloth. The PE covered the drip-line with 1, 2, and layer and operation head was conducted by 0.5 m, 0.75 m, and 1 m. Evaluation of trickle irrigation system design were conducted by two treatment, surface and sub-surface, and slope of surface land were 0%, +2% and -2%. The results indicated that the experiment using 3 layers of PE cover was better with the highest coefficient of water distribution uniformity with the following specifications: q= 1.31/hour with 1m head operation. The uniformity of distribution in sub-unit of this design was 74.6%, the average of diameter of soil surface wetting was 34 cm, and water content ranged from 20% - 54%. The average of sub-surface soil wetting was 31 cm, with average water content ranging from 24% - 30% in 6,5 hours application of irrigation. These ranges were still between the field capacity and permanent wilting point from the soil sample in location of study. Keywords: Low-pressure drip irrigation, polyester cloth, soil wetting distribution, emission uniformity.

ANALISIS KOEFISIEN ALIRAN PERMUKAAN PADA BERBAGAI BENTUK PENGGUNAAN LAHAN DENGAN SWAT Danesta Ayu Saputri; Ridwan Ridwan; Mohamad Amin; Sandi Asmara
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 7, No 1 (2018): April
Publisher : The University of Lampung

Way Sekampung Hulu watershed definited as upstream part from Way Sekampung watershed with rain catchment area of 43,063 km2, that located in Tanggamus District of Lampung Province. Land shifting from non-building area to building area will stimulate the magnitude of surface water flow that impacts on the decline of recharge capacity and increased surface water flow that occurs flood in downstream area. The research aim to surface runoff coeffisient values in various land use form of watershed and hydrograph river flow parameter values. The method of this research is approach of hydrology model analysis based GIS, with SWAT model. Data of river flow debit, rainfall, and climatology that used is data record in 2010 until 2015. Process of model calibration with data record in 2010-2012 and model validation with data record in 2013-2015. Result of calibration process with SWAT-CUP are Nse and R2 value for river flow debit (flow out) of 0.63 and 0.66 respectively. Result of model validation are Nse and R2 value of 0.64 and 0.74 respectively. Surface flow coeffisient value (C) for shrubs of 0.13, settlement of 0.22, primary dryland forest of 0.11, open land of 0.44, moor of 0.28 and plantation of 0.15. Analysis result also obtained best values for hydrograph flow parameters such as SURLAG of 0.389, GW_REVAP of 8.451, SOL_AWC of 1.104, EPCO of 0.008, HRU_SLP of 0.898, SLSBBSN of 23.195, CH_N2 of 3.876, ALPHA_BF of 0.636, GW_DELAY of 8.451, ESCO of 1.335 and CN2 of 1.979.

EFFECT OF TEMPERATURE AND CONCENTRATION ON THE ABSORPTION OF SUGAR SOLUTION IN BENGKUANG (Pachyrrhizus erosus) Malyan Afri Arlita; Sri Waluyo; Warji .
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 2 (2013)
Publisher : The University of Lampung

Processing of foodstuffs mostly involves temperature and water. Interaction among the product, temperature and water changes the physical and chemical properties. The aim of this research was applying the Peleg’s equation to evaluate the effect of temperature and concentration of sugar solution on the absorption of sugar into bengkuang (Pachyrrhizus erosus). This research was designed at two different variables, which were temperature and concentration of sugar solution. The temperature was seted up at three levels : 30 oC, 40 oC and 50 oC, meanwhile the concentration was made at three levels : 20,6 oBrix, 30,7 oBrix and 40,7 oBrix. Three replications were conducted in each combination of the treatments along 450 minutes immersion duration. The results showed that the soaking temperatures affected to the absorption rate of sugar solution into bengkuang. The higher the soaking temperature the higher is the absorption rate. It was occurred the physical changes of bengkuang during soaking. The dimensions of the speciments decreased during immerse in the warm sugar solution. It may caused by water in the product comes out from the body. Furthermore, it proved that coefficient k1 of Peleg’s equation relates to temperature. The increasing of temperature was followed by decreasing of k1. At 30 oC and the concentration of 20,6 oBrix, the k1 is 0,254. It decreased become 0,124 at temperature of 50 oC. The decreasing of k1 was less with increasing of the concentration. Meanwhile, the coeffients k2 decreased with increasing of the concentration. At temperature of 30 oC and concentration of 40,7 oBrix, k2 is 19,76. It decreased become 14,11 at concentration of 40,7 oBrix. The decreasing of k2 was less with increasing temperature. Keywords: Bengkuang, immersion, temperature, sugar concentration, physical properties

PENGARUH KECEPATAN PUTAR TERHADAP UNJUK KERJA MESIN PENCACAH PELEPAH KELAPA SAWIT (CHOPPER)TIPE TEP-1 Rala, M.Andrian Soni; Asmara, Sandi; Suharyatun, Siti
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 3 (2017)
Publisher : The University of Lampung

Indonesia merupakan negara yang dikenal sebagai produsen minyak sawit dunia.Â Salah satu produk samping tanaman perkebunan sawit yang belum dimanfaatkan secara optimal adalah limbah pelepah kelapa sawit.Â Kendala utama dalam pemanfaatan pelepah kelapa sawit adalah sifat fisiknya yang keras sehingga tidak bisa langsung dimanfaatkan untuk pakan ternak,Â Sehingga diperlukan teknologi pengolahan pelepah kelapa sawit agar bisa dimanfaatkan untuk pakan ternak, salah satunya dengan teknologi cacahan (chopping). Jurusan Teknik Pertanian Universitas Lampung telah memodifikasi dan membuat alat Mesin pencacah (Chopper) Tipe TEP-1 yang digunakan untuk mencacah pelepah kelapa sawit sebagai bahan baku pakan ternak. Â Tujuan penelitian ini adalah mengetahui pengaruh kecepatan putar mesin pencacah (chopper) tipe TEP-1 terhadap kapasitas kerja, susut bobot, dan keberagaman cacahan pelepah kelapa sawit.Â Penelitian ini dilaksanakan pada bulan Juli â€“ Agustus 2017, di Desa Batuliman Indah, Kecamatan Candipuro, Kabupaten Lampung Selatan, Provinsi Lampung.Â Â Penelitian ini dilakukan dalam 6 tahap (1) persiapan alat dan bahan.Â (2) pencacahan pelepah kelapa sawit.Â (3) pengukuran hasil cacahan. (4) penghalusan yang dilakukan 1 kali pada setiap perlakuan (5)Â penimbangan.Â (6) analisis data.Â Parameter yang diamati pada penelitian ini adalah waktu kerja pencacahan (t), kapasitas kerja (ka), susut bobot (sb), dan keberagaman cacahan (kc).Â Penelitian ini, pelepah kelapa sawit diambil dari kebun kelapa sawit milik warga.Â Berdasarkan penelitian dan pengamatan, diambil kesimpulan Kecepatan putar (RPM) berpengaruh terhadap kapasitas kerja, susut bobot, keberagaman cacahan, dan konsumsi bahan bakar, Kecepatan putar pencacah terbaik berkisaran antara 1200 â€“ 1600 Rpm.Â Kata Kunci :Â Pelepah kelapa sawit; mesin pencacah Tipe TEP-1; Kecepatan putaran.

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