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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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PENGGUNAAN MODEL CROPWAT UNTUK MENDUGA EVAPOTRANSPIRASI STANDAR DAN PENYUSUNAN NERACA AIR TANAMAN KEDELAI (Glycine max (L)Merrill) DI DUA LOKASI BERBEDA Danny Riandika Prastowo
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 (517.085 KB)

Penelitian ini bertujuan menduga evapotranspirasi standar (ET) untuk menyusun neraca air tanaman kedelaisebagai dasar rekomendasi jadwal tanam di wilayah Masgar dan Terbanggi Besar berdasarkan CROPWAT.Penelitian ini dilaksanakan pada bulan November 2014 - Januari 2015 di Jurusan Teknik Pertanian FakultasPertanian Universitas Lampung, Stasiun Klimatologi Masgar Kabupaten Pesawaran Provinsi Lampung dan StasiunMeteorologi Pertanian Khusus PT. Great Giant Pineapple Terbanggi Besar Kabupaten Lampung Tengah ProvinsiLampung. Data iklim dari wilayah Masgar dan Terbanggi Besar dianalisis dengan CROPWAT untuk menghitungevapotranspirasi standar (ETo). Nilai evapotranspirasi standar (ETo), koefisien tanaman (K) dan sifat fisik tanahdigunakan untuk menyusun neraca air tanaman kedelai dengan CROPWAT dan kemudian dibandingkan denganmetode Thornthwite and Mather. Neraca air tanaman digunakan untuk menentukan rekomendasi jadwal tanamkedelai. Rata-rata evapotranspirasi standar (ET) harian di wilayah Masgar sebesar 3,7 mm dan rata – rata bulanansebesar 111,1 mm. Sedangkan rata – rata ETooharian di wilayah Terbanggi Besar sebesar 3,4 mm dan rata – rata bulanan sebesar 102,7 mm. Jadwal tanam kedelai berdasarkan CROPWAT untuk wilayah Masgar dan TerbanggiBesar pada periode bulan Februari-April dengan masing – masing evapotranspirasi tanaman (ETcc) rata – rata sebesar 260 mm dan 223,2 mm. Rata – rata evapotranspirasi tanaman (ET) kedelai berdasarkan CROPWAT lebih rendah dari pada metode Thornthwite and Mather dalam satu periode tanam. Untuk memanfaatkan lahan, maka dapat dikombinaskian dengan komoditas lain. Di wilayah Masgar dan Terbanggi Besar dapat diterapkan pola tanam Jagung-Kedelai.

THE DESIGN OF SOLAR DRYING TOOL WITH A FLAT CHIP COLLECTORS Hizami Ch Anwar; Budianto Lanya; Agus Haryanto; Tamrin -
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1887.506 KB)

Rack solar drier is one example of useful utilization of solar energy, but has not widely used by the public, yet. Using this solar drier we can dry our fish and agricultural products without fossil fuels. Solar dryer works by absorbing sunlight by four blackened flat collectors, and the heat generated by the collectors was transferred by air flow to the plenum chamber and drying chamber consisting of shelves. The solar dryer used in this experiment has dimension of 4,66 m length by 4,66 m width and by 1,95 m height. The dryer has a capacity of around 50 kg materials that can be dried during 20 hours. Based on our testing it was observed that the decrease in water level was not uniform among the shelves position. The final moisture content was highest in the top shelves, followed by middle shelves and bottom shelves. The average final moisture content was 16,95%. The time required for drying was 20 hours, with an average moisture load of 10,46 kg H2O. The average drying rate was 0,5228 kg H2O/jam or 2,10% wet basis per hour. In this experiment intensity of solar radiation was measured to be 634,88 Watt/m2, and electric power of 12,83 Watt was used to run small fan in order to exhaust moist air. The average energy used (Qe) for drying banana chips was 37124,58 kJ per each drying process and the average energy input used during the drying process (Qrs) was 147.227,87 kJ. This meant that average drying efficiency was 27,07%. Technically, it can be concluded that solar dryer can be used as an alternative to drying agricultural commodities. Keywords: moisture content, banana chip, solar drier, flat collectors, solar intensity.

PENGUJIAN MESIN TANAM PADI SISTIM JAJAR LEGOWO (JARWO TRANSPLANTER) DI LAHAN RAWA PASANG SURUT Umar, Sudirman; Hidayat, A. R.; Pangaribuan, Sulha
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 1 (2017)
Publisher : The University of Lampung

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In Indonesia rice transplanting is the most widely used system by farmer in rice cultivation wich require 25-30% of total manpower. Optimizing mechanicalÂ transplanting system is an alternative to overcome manpower shortage. The objective of this study is to evaluate the performance of jarwo transplanter in orther to improve itsÂ efficiency. The experiment was conducted at Sidomulyo village, Kapuas regency, Central Kalimantan in dry season 2015 (April-September). Seedling to be used in this experiment was prepared using dapog method. Uniformity of planting, planting depth, the number of seedling embedded, and field capacity of the machine were oberved to determine the performance of jarwo transplanter. Results indicated that forward speed of 2.02 km/hour and planting width of 80 cm (4 rows), the effective field capacity was 6.28 hours/ha.Uniformity of planting achieved 98,08%Â with an average number of seedlings was 3 to 4 seedling/hole and planting depth of 4.2 cm. There was 2.12 of holes without seedlings and 0.15% of floating seedlings. Application of Indo Jarwo Transplanter in the tidal swampland can overcome manpower shortages. Key word : transplanter, jarwo, tidal swampland, riceÂ

Design and Performance Test of Corn Rice Granulator Machine ., Warji; Lanya, Budianto; Hardika, Gerry
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 2 (2013)
Publisher : The University of Lampung

Development in science and technology today has been able to produce instant nutritious foods, such as imitation rice.Â The application of conventional technologies in the granulation process causes minimal quantity and quality of the imitation rice with corn feedstock generated.Â The purpose of this research was to design and to test its performance. This research was conducted at the Laboratory of Agricultural Engineering, Agricultural Engineering Department, University of Lampung.Â This research procedures included several stage: design, assembly, testing, observation and data analysis.Â The corn rice granulator machine is designed to the specifications of length 140 cm, width 75 cm, and height 170 cm and comes also with other components, such as hopper,Â sprayer, sweeper, corn rice container, electric motors, gearboxes, pillow block, and couple units.Â Some of component settings in the testing of this machine: the slope of granulator pan at 35Â°, discharge of hopper 0,2 kg/sec, discharge of water sprayer 0,54 mâ/sec, speed of granulator pan rotation 28 RPM, and the clearance between corn rice container and granulator pan by 5 cm.Â The results showed that, this granulator machine had production capacity of wet corn rice up to 10,92 kg/hour, and efficiency of granulation up to 78,18%, for the raw material with composition 75% corn flour and 25% tapioca flour. Keywords: Granulator Machine, Imitation Rice, Corn.

VARIABILITAS SPASIAL HUJAN DI WILAYAH UPT PSDA DI MALANG Indarto Indarto; Askin Askin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 3 (2017)
Publisher : The University of Lampung

This study show the spatial variabilit of rainfall (monthly and annual) rainfall in the area of technical implementation unit of water resources management (UPT-PSDA) in Malang. Administrative area of UPT PSDA in Malang include Malang regency, Malang city, Batu, Blitar Regency, Tulungagung Regency, and Trenggalek Regency. Daily rainfall data from 88 pluviometers spread around the areas are used as main input. The research procedures consist of : (1) data pre-analysis; (2) the analyses using ESDA tools (Histogram, voronoi, QQ-Plot); (3) interpolation by using IDW method; (4) producing a thematic map; and (5) interpretation. Analysis using the histogram, voronoi–maps and normal QQ-plots tools illustrates more detail the spatial variability of the monthly and annual rainfall around the regions. Interpolation produces a thematic map of mean monthly-rainfall, between 100 – 400 mm/month. The spatial distribution of annual rainfall was illustrated by a thematic show the average-annual-range from 1000 – 4000 mm/year. Keywords: spatial variability, rainfall, ESDA, IDW, monthly, annual rainfall

PENGARUH SUHU DAN WAKTU REAKSI PADA PEMBUATAN BIODIESEL DARI MINYAK JELANTAH Shilvia Vera Sinaga; Agus Haryanto; Sugeng Triyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 1 (2014)
Publisher : The University of Lampung

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This study aimed to utilize waste cooking oil as raw material for biodiesel production and to study the influence of time and temperature of the transesterification reaction on the biodiesel production and its characteristics. The study was conducted by base transesterification with NaOH at a molar ratio of waste cooking oil to methanol 1:6. A combination of three levels of temperature (45⁰C, 55⁰C and 65⁰C) and three levels of reaction time (5 minutes, 10 minutes, and 30 minutes) was performed. Each treatment was conducted with 3 replications. The results showed that the yield of biodiesel was affected by temperature and reaction time. The optimum treatment combination was transesterification at temperature of 65⁰C and 30 minutes of reaction time, which produced 72,87 % methyl ester with a density of 0,85 g/ml, viscosity of 1,65 cSt and acid number of 0,07 %. Although the density and acid number of biodiesel produced met the biodiesel quality standards of Indonesia (SNI), it was not recommended to be used as fuel engine. Keywords: Biodiesel, waste cooking oil, transesterification, temperature and reaction time.

MODIFICATION OF MECHANICAL EQUIPMENT SEMI corn sheller Nurdin - Ar Rasid
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 2 (2014)
Publisher : The University of Lampung

The purpose of this research is to improve the performance of the tool before and get a corn sheller sheller corresponding cylindrical shape. The modified part was the cylinder of sheller by using 4, 8, and 12 segments of serrations. Each cylinder received 3 treatments. The cylinder was fed by 1 cob (T1), 2 cobs (T2), and 3 cobs (T3) with three replications. This research was successful to modify the corn sheller machine with dimension of 100 cm x 50 cm x 115 cm with three types of sheller cylinders. The mechanism principle of this corn sheller was that the sheller cylinder in the middle of holder cylinder was operated by human power through hand crank with 50 to 70 rpm. The results showed that the highest yield (96%) was obtained by corn sheller with 4 serrations while 4% remained unshelled. The lowest yield (92%) was obtained by corn sheller with 12 serrations while 8% remained unshelled. From all treatments, the best result was corns sheller with 4 serrations fed with 3 corn cobs with percentage of 99.40% good shelled weight and 0.60% poor shelled. The lowest result with biggest damage was in the corn sheller with 8 serrations fed with 1 corn cob. The result was 97.53% good shelled and 2.47% poor shelled. The highest capacity (1.58 kg corn cobs/minute) was obtained by the corn sheller machine with 4 serrations.Keyword: Corn sheller, modification cylinder sheller, performance tools

SIMULATION OF RAINWATER HARVESTING FOR SUFFICIENT WATER NEEDS IN RAISING CORN (Zea Mays) -, Febrianto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 1 (2015)
Publisher : The University of Lampung

A rainwater harvesting systemconsisted of a planning land area and a rainwater collection pond area. This studyaimed to determine the optimum ratio of the planting area to the collection pond area. Researchwas conductedby running a 13 year simulation with daily time step. A 13 year (1999-2011) daily meteorological data setobtained fromtheMeteorology, Climatology and GeophysicsAgency (BMKG) Lampung Province,was used to runthe simulation. Programswritten using VISSIM4.0 (Visual Simulation). The results showed that the rainwaterharvesting system can suffice the irrigation water for maize. The smallest pond area (570 m2) required ifplanting was done in February, while the largest pond area (1620 m2) required if plantingwas done on August.KeyWords: Evapotranspiration, Corn, Irrigation, Rainwater harvesting.

THE EFFECT OF CLAY-MADE GRANULES MATERIAL ON THE VEGETABLES HYDROPONIC GROWTH WITH WICK SYSTEMS Iis Marlina; Sugeng Triyono; Ahmad Tusi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 2 (2015)
Publisher : The University of Lampung

This study aimed to determine the effect of granule growing media on growth and yield of vegetables in ahidroponic wick system. The design of this study used Randomized Complete Block (RCB) with factorialarrangement and three replications. The first factor consisted of three levels : kale (S1), spinach (S2), andmustard (S3). The second factorwere the size of the granules with four levels : 12mm (M1), 6mm (M2), 4 mm(M3) and husk char (M4) as a control. Each plant was grown in a wicked pot. There were 12 treatmentcombinations, with three replicates. Parameters observed were physical properties of the media,evapotranspiration, number of leaves, growth, biomass, and yield. Data was analyzed using the Analysis ofVariance (ANOVA) 1%and 5%levels of significance, followed by LSDcomparision. Results showed that therewasno significant interaction betweenmedia and types of plant. However; sizes of media significantly affected theevapotranspiration, growth, biomass, and yield.Keywords:Wicked, hydroponics, granules, media, vegetables

DESIGN OF EBB AND FLOW HYDROPONICS SYSTEM FOR BABY KAILAN (Brassica oleracea) WITH COCOPEAT AS GROWING MEDIA Ramadhan, Handy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 4 (2015): Special Edition
Publisher : The University of Lampung

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Ebb and flow hydroponics system generally has little quantity of plants and expensive construction cost.Â The purpose of this research was to design an ebb and flow hydroponics system with many quantity of plants but low in manufacturing cost and to test its performance.Â This research was conducted at the Laboratory of Agricultural Engineering, Agricultural Engineering Department, University of Lampung.Â The research procedures included several stages : design, assembly, testing, observation and data analysis.Â The ebb and flow hydroponics system was designed with the spesification of 200 cm length, 150 cm width, and 285 cm height and equipped with multi-span roof and screen wall.Â The planting tray has 13 furrows with 200 cm length, 15 cm width and 15 cm depth and 9 holes of planting aech row, so there are 117 plants on the tray.Â The manufacturing cost of ebb and flow hydroponics system was lower than hydroponics kits available in market.Â The obsevations showed that temperature inside greenhouse was lower than outside with a difference of 1,58 Â°C.Â Humidity inside greenhouse was higher than outside with a difference of 4,3%.Â Cultivation testing using baby kailan with cocopeat as growing media resulted in fresh weight 35,75 gram each plant harvested.Key words : Design, ebb and flow hydroponics system, baby kailan, cocopeat andÂ Â Â growing media.

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