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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 1,078 Documents

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THE APPLICATION OF DRIP IRRIGATION SYSTEM ON CAULIFLOWER (Brassica Oleracea Var. Botrytis L. Subvar. Cauliflora DC) IN AGREENHOUSE Hendri - Yanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 2 (2014)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.98 KB)

The research aimed to test performance of a drip irrigation system to irrigate cauliflower cultivated in a greenhouse. The drip irrigation system using emitter type regulating stick emitter as many 315. One Main pipe, one manifold, and four lateral pipes were from PE types with the diameter of 13 mm. The methods to deliver irrigation water were by using a small pump 13 Watt and by using gravitational pressure with head 155 cm. Variables observed were emission uniformity (EU), water requirement, plant growth, and water productivity. The results showed that Emission uniformities were 64,49 % for gravitational flow and 61,46 % for pumping flow. These values were still below recommended, that is 75 % - 85 %. The minimum, maximum, and mean reference evapotranspiration (ETo) were recorded as 5,80 mm/day, 9,70 mm/day, and 7,20 mm/day. Whilst crop evapotranspiration (ETc) at the day of 41 after planted was 3.2 mm/day. Average yield of cauliflower was 58 gram per plant, while water productivity was 0,87 gram/litter.Keyword: cauliflower, crop water requirement, drip irrigation, emitter, emission uniformity

PERFORMANCE TEST OF LAB SCALE BATCH FOR ROUGH RICE DRYING USING HUSK OF RICE FUEL Meylani, Sri Rezeky; ,, Tamrin; ,, Warji; Lanya, Budianto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 3 (2013)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (380.668 KB)

The increase in fuel prices and electricity, husk of rice can be used by farmers as alternative energy for rough rice drying. Mechanical drying such as by using batch dryer can be used to overcome the advantage of sun drying especially in rainning season. This research aim to examine the performance of batch dryer lab scale (capacity of 15 kg - 25 kg of grain) with husk of rice fuel. This research was conducted at three variations of thickness which were 15,3 cm, 20,3 cm, and 25,5 cm. The results showed that the average of drying temperature and moisture content for the treatments were respectivelly, 34,78 Â°C and 13,97%; 34,20Â°C and 13,77%; 37,92 Â°C and 13,67%. The higher temperature used the shorter the drying time and the less thick of rough rice the shorter the drying process. The number of rice husk fuel used for the three different thicknesses were 12 kg, 14 kg and 16 kg, respectivelly. Further, the drying durations for each treatments were 10 hours, 11,3 hours, and 12 hours, respectivelly and the drying efficiencies were 3,05%, 3,41%, and 3.63%, respectivelly. One kg of rice husk could be used to dry about 1,35 kg of wet rough rice. Keywords: Rough rice, Batch dryer, Drying, Fuel, Husk of rice.

PERFORMANCE ANALYSIS OF WORKING FLUIDS ON ORGANIC RANKIE CYCLE (ORC) MODEL WITH BIOMASS ENERGY AS A HEAT SOURCES Lilis Sucahyo; Muhamad Yulianto; Edy Hartulistiyoso; Irham Faza
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

Organic Rankine Cycle (ORC) is an electricity power technology particularly suitable for medium-low temperature heat sources and/or for small available termal power. This paper presents the simulation and performance analysis of working fluids R-134a, R-414B, R-404A and R-407C on ORC with biomass energy as a heat source. Simulation of the ORC system using Cycle Tempo software. The property of working fluids is obtained by using Reference Fluid Properties (Refprop). The best result performance of ORC was shown by working fluid R-404A with thermal efficiency 7.54 % and electric power output ranges between 0.075 kW. This condition operated on turbine inlet temperature at 60 oC, difference turbine working temperature of 15 oC, condensing temperature 25 oC and water boiler mass flow rate 3 lpm.

POTENSI BIOGAS DARI PROSES REKAYASA AKLIMATISASI BIOREAKTOR AKIBAT PERUBAHAN SUBSTRAT PADA INDUSTRI BIOETHANOL Julfi Restu Amelia; Udin Hasanudin; Erdi Suroroso
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

Produksi etanol (bioetanol) dari bahan baku biomassa merupakan salah satu cara mengurangi polusi lingkungan dan konsumsi terhadap minyak mentah. Salah satu bahan bakar yang dapat diperbaharui yakni bioethanol yang merupakan produk turunan dari singkong dan tetes tebu dengan menggunakan teknik proses multiple feedstock system. Industri bioethanol tidak hanya memproduksi produk utama berupa etanol, tetapi juga menghasilkan air limbah dalam jumlah besar. Air limbah bioethanol berbahan baku singkong disebut dengan thinslop, sedangkan air limbah bioethanol berbahan baku tetes tebu disebut dengan vinasse. Adanya proses perubahan substrat dari thinslop ke vinasse akan menyebabkan perubahan beban mikroorganisme dalam penguraian bahan organik . Tujuan dari penelitian yakni untuk mengukur potensi produksi biogas dari proses rekayasa aklimatisasi perubahan substrat. Penelitian menggunakan tiga bioreaktor CSTR dengan kapasitas 50 L. Perlakuan setiap bioreaktor yakni 50% thinslop dan 50% vinasse; 25% thinslop dan 75% Vinasse, dan 100% Vinasse, dengan laju pembebanan berbeda setiap minggu (0,5 g / L hari, 1,0 g / L hari, 1,5 g / L hari, dan 2,0 g / L hari). Hasil penelitian menunjukkan bahwa nilai potensial biogas dari bioreaktor pertama (50% thinslop: 50% vinasse), bioreaktor kedua (25% thinslop: 75% vinasse), dan bioreaktor ketiga (100% vinasse) berturut-turut yakni 39,39 L/hari, 38,97 L/hari 27,23 L/hari. Hasil penelitian juga menunjukkan bahwa kandungan gas metana secara berturut-turut dari bioreaktor pertama, bioreaktor kedua, dan bioreaktor ketiga (100% vinasse) sekitar 32,67-52,81%, 40,29-67,29%, 20,46-57,33%. Kata kunci : bioethanol, singkong, tetes tebu, bireaktor, aklimatisasi

UJI KINERJA DAN PENGUJIAN LAPANGAN MESIN GRADING TOMAT (Lycopersicum esculentum) TEP-5 Wahyu K Sugandi; Sudaryanto -; Totok Herwanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 3 (2016)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (338 KB)

Laboratory of Agricultural Equipment and Machinery, Department of Industrial Engineering and ManagementAgricultural has designed a tomato grading machine TEP-5 to accelerate post-harvest handling of tomatoes. TheMachine design need to be evaluated to determine it’s performance and quality of tomato grading results. Theresearch method is descriptive analysis. Based on test results, tomato grading machine TEP-5 had an actualcapacity of 4246 Tomato with the engine efficiency of 60,48% and. Engine noise no with and without load was68,3dB and 69,8 dB respectively. Engine vibration generated during no-load test was 2.09 m/s 2 and 2.02 m/s 2with load test. Engine power with and without load respectively 265,8 and 254,8 watt. Tomato quality results frommachine was grading significantly diferrent as compared with the one graded manually. The level of tomatodemage result from grading machine storage at room temperature and cool temperature (<10 o )respectively6.42% and 5.61%. These values were lower as compared to the manual grading. The bruised area of tomatogradeded mechanicaly was 30,19% than that of tomato graded manually. Tomato color was the range of yellowand no difference was observed between manual and mechanical grading.Keyword: grading machine, test performance, self life.

KONDISI LAHAN KEBUN TEBU SETELAH PANEN DAN KARAKTERISTIK FISIK DAN MEKANIK SERASAH TEBUNYA wahyu kristian sugandi; I Nengah Suastawa; Joko Wiyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 3 (2017)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v6i3.133-140

Telah disadari belakangan ini bahwa pembakaran tebu sebelum dan setelah panen dapat merusak lingkungan hidup serta mengganggu kesehatan manusia di lingkungan perkebunan tebu. Usaha-usaha untuk menangani serasah tebu yang jumlahnya sangat banyak, yang mengganggu proses budidaya tebu telah mulai dilakukan. Salah satunya adalah mencacah serasah tebu menjadi ukuran kecil untuk digunakan sebagai kompos, atau dibenamkan kembali ke dalam tanah. Proses perancangan alat atau mesin yang berkaitan dengan penanganan serasah tebu tersebut membutuhkan data pendukung sifat fisik dan mekanik serasah tebu. Data tersebut akan sangat membantu dalam menghasilkan rancangan alat dan mesin yang efektif dan efisien baik secara teknis maupun ekonomis. Metode Penelitian ini adalah analisis deskriptif yaitu melakukan pengukuran dan analisis data untuk mengetahui kondisi lahan dan karakteristik dari serasah tebu. Hasil Penelitian menunjukkan bahwa lebar guludun 120 cm, jarak tanaman 120 cm dan tinggi guludan 20 cm. Kerapatan Kamba serasah tebu 7,71 kg/cm3, : panjang rata-rata pucuk 162.5 cm, jumlah rata-rata daun per pucuk 4.1 lembar, lebar daun rata-rata 5.0 cm, tebal daun rata-rata 0.3 mm, diameter pangkal pucuk rata-rata 21.3 mm, dan berat pucuk 57.3 gram. panjang daun 161.1 cm, lebar pangkal daun 4.4 cm, lebar tengah daun 4.1 cm, lebar ujung daun 3.9 cm, tebal daun 0.3 mm, dan berat daun 8.9 gram. Keywords: Physical properties; mechanical properties; sugarcane.

ANAEROBIC DIGESTER VARIATION FOR BIOGAS PRODUCTION ON COFFEE WASTEWATER TREATMENT Elida Novita; Hendra Andiananta Pradana; Sri Wahyuningsih; Bambang Mahraenanto; Moh Wawan sujarwo; Moh. salman A. Hafidz
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

Wet coffee processing methods will produce waste water containing organic matter. The high content of organic matter can be utilized as biogas through the anaerobic process. Biogas becomes renewable energy source. Anaerobic digesters construction can affect removal process of wastewater pollution and biogas quantity. The research aim’s was determine the performance biogas production of digester construction on conventional digester, CSTR and UASB from coffee waste water. The conventional digester worked without temperature control system, a UASB digester, and CSTR digester worked with temperature control system. Biomass volume was about 5 L with 35 days incubation time. The research result showed variation of biogas production on each digester. Based on the feeding variations, UASB has a stable performance with 83.57 ml/day of average biogas production. It has also highest remediation efficiency of COD, BOD and C/N with 85.00±0.34 %, 84.40%± 5.66 and 97.78± 0.57.

EXPLORE THE CHARACTER OF SOIL SPECTRAL REFLECTANCE RELATE TO THE SOIL ORGANIC MATTER CONTENT Sari Virgawati; Muhjidin Mawardi; Lilik Sutiarso; Sakae Shibusawa; Hendrik Segah; Masakazu Kodaira
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

ABSTRACTThe visible and near-infrared (Vis-NIR) diffuse reflectance spectroscopy has emerged as a rapid and low-cost tool for extensive investigation of soil properties. The objective of this research was to explore how significant the relationship between the soil spectral reflectance and soil organic matter (SOM) content. Some soil samples in Yogyakarta were taken for SOM content and spectroscopy measurement. The SOM was analyzed using Walkley and Black method, while the spectral reflectance was determined using ASD Field-spectrophotometer by scanned the sample with Vis-NIR spectrum. Pearson’s coefficient showed that there was a strong negative correlation between SOM and soil spectral of certain wavelengths. Soil with less organic matter content performed high reflectance. Keywords: Soil organic matter; Vis-NIR spectroscopy; soil reflectance; Pearson’s correlation coefficient.

Prototype of Corn Thresher Unit for Corn Combine Harvester Diang Sagita; Radite Praeko Agus Setiawan; Wawan Hermawan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

One of the ways to support corn production is through technology implementation, but the domestic industries have not attempted to produce technology for harvesting activities especially corn harvesting. This research was carried out to get the best design, prototype and performance of corn thresher unit to be applied to the design of a corn combine harvester. The components consist of threshing cylinders, perforated cages, grain screw conveyors and corn cob entry holes. The research method begins from analyzing (functional and structural designs), designing, testing performance, evaluating and modifying. The performance test was carried out stationary using corn cob raw material. The performance of the thresher unit has been quite good. The results show that the best performance was the prototype with the last modification (C). Threshing efficiency reached 93.75%, percentage of un-threshed kernel was 6.25%, and cleanliness level 90.68%. While threshing capacity was 358.28 kg/hour, which corn cob feeding was carried out by humans with a feeding capacity of 420.05 kg/hour

PENGARUH KETINGGIAN TEMPAT TUMBUH DAN METODE PENGERINGAN TERHADAP ORGANOLEPTIK DAN KADAR ASIATIKOSID PEGAGAN (Centella asiatica (L) Urb) Devi Safrina; Sofa Farida; Endang Brotojoyo; Inas Kamila
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

Pegagan (Centella asiatica (L) Urb) merupakan salah satu jenis tanaman obat yang semakin dikenal masyarakat. C. asiatica merupakan tanaman yang dapat hidup dari dataran rendah hingga dataran tinggi. Perbedaan ketinggian tempat tumbuh yang mempengaruhi lingkungan sekitar juga menghasilkan kandungan kimia yang berbeda pada tanaman. Bahan jamu mempunyai beberapa kriteria diantaranya susut pengeringan, organoleptik, dan kandungan kimia. Salah satu kandungan kimia yang berkasiat obat dalam tanaman C. asiatica yaitu asiatikosida. Kandungan kimia suatu bahan sangat dipengaruhi oleh proses pascapanen salah satunya adalah pengeringan. Penelitian ini bertujuan mengetahui pengaruh ketinggian tempat tumbuh dan metode pengeringan terhadap organoleptik dan kadar asiatikosida. Variasi ketinggian yang digunakan yaitu ketinggian 600 mdpl dan 900 mdpl. Metode pengeringan yang digunakan yaitu sinar matahai, kombinasi matahari dan box dryer, pengeringan box dryer, kombinasi box dryer dan oven, serta pengeringan oven. Hasil penelitian yang dilakukan menunjukkan bahwa ketinggian tempat tumbuh dan metode pengeringan berpengaruh terhadap warna dan rasa serta kadar asiatokosida, tetapi tidak berpengaruh terhadap aroma simplisia C. asiatica. Tempat tumbuh ketinggian 600 mdpl dengan metode pengeringan kombinasi box dryer dan oven memberikan nilai tertinggi kadar asiatikosida yaitu 0,94 ± 0,07 %.

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