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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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PERBANDINGAN TEKNIK PEMAJANGAN SAYURAN DAUN UNTUK MEMPERTAHANKAN KESEGARAN SELAMA PENJUALAN Sri Wahyuni; Sugeng Triyono; Ahmad Tusi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 1 (2014)
Publisher : The University of Lampung

This study aimedto observe the effect of soakingthe root of leafy vegetableson thefreshnessduringsale. Vegetablesused werekangkungandgreen mustardfrom hydroponicsandconventionalcultivations. Treatments wereconsistedofsoakingwithaeratedwater, soakingwithunaeratedwater, soaking withaerated nutrient solution(EC 0.4mS/cm), displaying in mist sprayed (humidified) cabinet without soaking,andcontrol(neither soaking nor spraying). Soakingwas donein aglasscontainer(50cm length, 40cm width, 20cm height)andfilledwithwater±20liters/5 cm height. Parametersmeasured werewater content, leaf water potential,andleafdiscoloration. The results showedthatthe average room temperature and RH were found about 29oC and 80%. Respectively temperature and RH in the humidified cabinet were not much different from the ambiance. Soakingwithaeration was able to keep vegetables fresh without wilting process. Percentage of yellowing reached 10% of the total number within 5days for hydroponics kangkung, 2 days for conventional kangkung, 4days for hydroponics green mustard, and 2 days for conventional green mustard during the display. Vegetables displayed in the room with no treatment (control) were wilting consistently, their water content was decreasing, and their water potential tended to increase from the beginning. Thus, discoloration was more proper parameter for the soaked vegetables, while change of water content and water potential were more proper for non soaked or spayed vegetables. Keywords: Aerated, display, leafy vegetables, soaking

DESIGN OF EBB AND FLOW AUTOMATIC HYDROPONIC SYSTEM FOR CHILLI PEPPER CULTIVATION Delya, Buti
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 (561.886 KB)

Ebb and flowhydroponic systemgenerally used a timer to controlnutrient addition. The use of the timer, howeverhas major disadvantage including inefficiency of nutrient usage. This research aimed at designing of ebb andflow automatic hydroponic system which able to turn on/off the pump based on the moisture content usingmicrocontroller.The research was conducted at Greenhouse Facility of the Integrated Field Lab of AgricultureSchool, the University of Lampung from April - June 2014. The procedure begins with the manufacture ofinstrument, calibration, system design tool, the power supply circuit, equipment test and field test. The resultsshowed that has been successfully realized automatic ebb and flow hydroponic system working based on themoisture content. The value of setting point obtained for controling water content for turning on the pump was< 34.95%andturning off the pumpwas > 69.83%. Cultivation testusingchilli pepper resulted thatautomatic ebband flowhydroponic systemwas significally better thanmanually systemone, interms of plantheight and numberof leaves.

DETERMINATION OF LAND TO POND RATIO IN RAIN WATER HARVESTING SYSTEM TO SUPPORT RICE-SOYBEAN CROPPING PATTERN Hadinata, Wira
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 1 (2015)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.223 KB)

The rain water harvesting system consists of a land area cultivated with rice and soybean cropping patternannually, and a rainwater collection pond. Surpluswater (runoff) in raining season is captured and collected inthe pond, and used for irrigation in the following cultivation. The objective of this researchwas to determine theoptimumratio of the landto pond area. This researchwas carriedout in the IntegratedField Laboratory, Facultyof Agriculture, University of Lampung by using data of soil physical properties (water content, field capacity,permanentwilting point, percolation); rice crop coefficient, soybean crop coefficient and climatological data for13 years from1999 to 2011. Datawas processed using asimulation program(Visual Simulation)presented inthegraphical form. The results showed that the rainwater potential that can be utilized as an alternative irrigationis abundant, about 1500 mm/year - 3000 mm/year with a total of rainwater reaching 314.509,78 m3 over 13years. Based on the simulation, the most effective period of planting, for rice is in January and for soybean is inMay. In addition, the optimum pond dimension to serve 1 ha cropping land is about 2450 m2 in with 3m depth,or the ratio of land to pond is 4:1.Keywords : Evapotranspiration,Pond,Rainwater harvesting,Rice and Soybean

EFFECT OF TIME AND SUJI LEAF (Pleomele Angustifolia) ADITIVE CONCENTRATION ON THE CHARACTERISTIC OF CASSAVA BASED RICE ENRICHED WITH TUNA PROTEIN Nurlina, Nurlina
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

Food that has specially scent is more preferred by consumers. Analog rice that enriched with tuna flour have astench smell. Oneof themethodwas to relieve the stench smell is by soaking to suji leaf extract. The purpose of thisstudy is characteristic test of analog ricemade fromcassava flour enrichedwith protein of tuna, and investigatingthe effect of time and concentration of additives suji leaf with the physical and chemical properties of rice analog.Several parameters was evaluated such us protein content, moisture content, color, bulk density, uniformity ofgrain and organoleptic tests. This study used completely randomized factorial design. The first factor is time ofsoaking (5,10, and 15 minute) and the second factor is concentration of suji leaf extract (20, 40,60, and 80%).The ratio of cassava flour and protein of tuna in the research is 92,5%: 7,5%. The result showed that proteincontain of analog rice is 4,4687%. Moisture content of analog rice is between 10,48 â€“ 12,61%. The longer ofsoaking time and high concentration canincreasedmoisture content of analog rice.Dominant colour analog riceis brown. Uniformity highest of granules produced on the size 1.7 â€“ 3.33mesh. Treatment received by the panelbased ontest organoleptik by scent is treatment of analog rice that soakedwith 15minutes and ratioleaf suji 400:1000 g/ml.Keyword : Suji leaf, Scent, Rice analog, Protein.

EFFECT OF ORGANONITROFOS FERTILIZER CONCENTRATION ON THE GROWTH AND PRODUCTION OF ORGANIC TOMATO (Lycopersicon esculentum Mill)WITH SUB SURFACE IRRIGATION SYSTEM Sayu Putu Okta Rinasari
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 4 (2015): Special Edition
Publisher : The University of Lampung

This study aims to observe the effect of concentration of organitrofos fertilizer on the growth and productivity of organic tomato plants with sub irrigation systems. The method used in the study was completely randomized design with six treatments. The six treatments were O0 (without organonitrofos), O1 (organonitrofos 10%, soil 90%), O2 (organonitrofos 20%, soil 80%), O3 (organonitrofos 30 %, soil 70%), O4 (organonitrofos 40%, soil 60%), and O5 (organonitrofos 50%, soil 50%). The results showed that different concentrations of organonitrofos fertilizer had no effect on the vegetative phase, but sinificantly different on the generative phase, yields, biomase, and evapotranspiration. Based on analysis of LSD, treatment ofO2 ( 20 % organonitrofos, soil 80 % ) was able to significantly increase crop yields compared with the treatments of O0 (without organonitrofos with additional chemical fertilizer ) and treatment O1treatment ( 10 % organonitrofos , soil 90 % ). But the use of higher than that in the treatment of O2 ( 20 % organonitrofos, soil 80 % ) did’t significantly increase production. Keywords: Organic Farming, Organonitrofos, Tomato, Subs Irrigation

PENGARUH KONSENTRASI PEREKAT TEPUNG TAPIOKA DAN TANAH LIAT TERHADAP MUTU BRIKET BATU BARA Tamrin -
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 (179.725 KB)

Making coal briquettes require tapioca glue and clay. The purpose of this research is studying the effect ofconcentration tapioca glue and clay to characteristic coal briquette. Research carried out by treatment with aconcentration of starch, clay and coal flour respectively as follows; a) 2%, 18%, 80%, b) 4%, 14%, 82%, c) 6%,10%, 84% and d) 8%, 6%, 86%. The results are showed that the density of coal briquettes are not affected by theconcentration of glue material, but it is influenced by the pressure of the tool at the time of manufacture. The lowerthe content of clay in the briquettes, the stronger the briquettes were produced and the lower the number ofbriquettes were broken when dropped at a height of 2 m. The higher the clay content of the briquettes, so the timefor the initial combustion, the temperature of the plate surface reached 180 °C and the duration of briquettebecame ashes are longer. The rate of combustion of coal briquettes are made lower than the rate of briquettescombustion from briquettes non carbonization and carbonizationKey word : coal briquette, tapioca, clay, start up combustion dan carbonisation

Modification of Rice Thresher-Hammer Thresher Type Ahmad Harbi; Tamrin -; Warji -; Budianto Lanya
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

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The thresher rice has developed in previous research is instrument thresher rice type hammer thresher. But the threshing not going well, Where rice stalk is still difficult to get out of the thresher. The objective of this research is to modify machine type paddy thresher hammer . Modification is conducted by adding director channel in upper wall of threshing chamber and to change straw exiting channel near the feeder with size of 15 cm width and 19 cm height. By this method, paddy straw is expected to exit from threshing chamber and threshing process can run smoothly. Methods used is Modification tools, testing modification result, observation and data collection. Observations are made to percentages of threshed paddy grain, percentage of unthreshed paddy grain, good threshed paddy grain, percentage of damaged threshed paddy grain, threshing duration, and working capacity of the machine per hour. Keywords: Thresher rice, thresher rice type hammer, modify machine thresher.

RANCANG BANGUN MESIN PENGIRIS TALAS SEMIR wahyu kristian sugandi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 1 (2017)
Publisher : The University of Lampung

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Talas semir merupakan komoditi unggulan di Kabupaten Sumedang yang didukung oleh agroekosistem yang cocok untuk pengembangan komoditas pertanian dalam arti luas. Salah satu jenis diversifikasi produk talas semir adalah keripik talas. Untuk menghasilkan keripik talas yang berkualitas dengan hasil yang seragam membutuhkan mesin pengiris namun beberapa hasil penelitian mesin pengiris belum memperhatikan aspek kenyamanan dari operator. Penelitian ini bertujuan melakukan rancang bangun mesin pengiris talas yang ergonomi. Penelitian ini menggunakan metode rekayasa yaitu melakukan suatu kegiatan perancangan yang tidak rutin sehingga terdapat suatu kontribusi yang baru baik dalam proses maupun bentuk. Mesin pengiris talas hasil rancangan terdiri atas pisau pengiris, kursi operator, luaran hasil irisan, poros piringan pisau pengiris,motor listrik, transmisi belt dan pulley. Berdasarkan hasil pengujian kapasitas teoritis mesin pengiris talas adalah 47 kg/jam dan kapasitas actual sebesar 38 kg/jam sehingga efesiensi pengirisan dihasilkan sebesar 81 %. Mesin pengiris talas menghasilkan kualitas irisan talas dalam kondisi baik sebesar 80%, dan daya yang dibutuhkan untuk pengirisan adalah 530 watt.

THE INFLUENCE OF SOAKING TEMPERATURE ON THE COEFFICIENT OF DIFFUSION AND PHYSICAL CHARACTERISTICS OF SOYBEAN (Glycine max Merrill) Pratiwi, Yuanita Kusuma; Waluyo, Sri; -, Warji; ., Tamrin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 2 (2013)
Publisher : The University of Lampung

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Soybean (Glicine max Merrill)is an important agricultural commodity and very popular in Indonesia as a raw material of such food stuffs for exemple: tempe.Â In the producing of tempe, soybean must be submerged in the water.Â The soaking process usually is done at room temperature for about 24-48 hours. The longer time of soaking can cause microbial contamination and may affect to the color change, bad taste and moldy smell.Â Submersion in warm water is a method that can be used for shortening the soaking time.Â The aims of this research were to study the effects of the soaking temperatures on the water diffusion coeffisien and physical characteristics of soybean (moisture content, weigh and dimension).Â The research was carried out at 5 levels of soaking temperature:30 Â°C (as a control), 35 Â°C, 40 Â°C, 45 Â°C, and 50 Â°C with 3 replications for each treatment. During soaking, sample was taken for measuring its moisture content, dimensional, and weight changes.Temperature history was recorded during soaking. The result showed that there were significant changes ondimension, weight, and water content during soaking. Those parameters increased as the soaking temperaturewas rised. The diffusion coefficient of soybean also increased with rising of soaking temperature. The analysis found that the diffusion coefficients of soybean at temperature of 30 Â°C, 35 Â°C, 40 Â°C, 45 Â°C, and 50 Â°C were respectively, 16.4 x 10-11 m2/s; 20.7 x 10-11 m2/s; 38.9 x 10-11 m2/s; 56.3 x 10-11 m2/s and 139 x 10-11 m2/s. The rate of diffusion followed an exponential equation D = 0.058 e0, 1051 / T(RÂ² = 0.960). Keywords: Diffusion coefficient, Soybean, Soaking Temperature, Physical Characteristics

SISTEM HIDROPONIK ORGANIK DENGAN MEMANFAATKAN LIMBAH EFFLUENT BIOGAS INDUSTRI TAPIOKA DAN LIMBAH KOLAM LELE Agustin, Stefani Silvi; Triyono, Sugeng; Telaumbanua, Mareli
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 3 (2017)
Publisher : The University of Lampung

Industri pertanian merupakan salah satu industri yang turut menyumbangkan dampak negatif berupa produksi limbah yang cukup besar.Â Limbah industri pertanian terdiri dari limbah cair, padat, gas, maupun kebisingan. Â Industri tapioka dan kolam lele termasuk di kalangan industri pertanian yang membuang limbah cair yang belum dimanfaatkan. Limbah cair ini sangat potensial dimanfaatkan sebagai sumber nutrisi untuk sistem hidroponik, karena limbahnya mengandung bahan organik. Penelitian ini bertujuan untuk mengeksplorasi penggunaan limbah cair untuk menanam sayuran organik dalam sistem hidroponik.Â Bahan utama yang digunakan dalam penelitian ini adalah limbah cair tapioka dari pabrik tapioka di Pesawaran, limbah cair budidaya ikan dari Laboratorium Lapangan Terpadu, Fakultas Pertanian, Universitas Lampung. Bahan lainnya termasuk benih sayuran dan bahan kimia yang digunakan untuk analisis laboratorium (larutan standar amoniak 1000 ppm, NaOH, KI, dan HgI2). Limbah kolam lele dan limbah tapioka diaplikasikan pada sistem hidroponik DFT. Parameter yang diamati dalam penelitian ini meliputi pH, EC, TS, TSS, TFS, N-Ammonium, BOD5 dan pertumbuhan tanaman.Â Hasil penelitian menunjukkan bahwa limbah tapioka masing-masing memiliki pH dan EC yang paling tinggi (9,7 dan 2038 Î¼S/cm).Â Limbah tapioka memiliki TS dan TFS yang tinggi (1672 mg/L dan 1496 mg/L) dan limbah budidaya ikan lele memiliki nilai TSS dan N-Ammonium paling tinggi (372 mg/L dan 10,79 mg/L). Pertumbuhan tanaman terbaik ditemukan pada penerapan limbah kolam lele. Pada sistem limbah kolam lele, tinggi tanaman mencapai 12,92 cm/tanaman, dan biomassa tanaman yang dipanen adalah 10,46 gram/tanaman. Namun, dalam sistem tersebut, sayuran menunjukkan pertumbuhan suboptimal, hal ini menunjukkan bahwa mereka menderita kekurangan gizi.Â Dengan demikian, sistem tidak menyuplai cukup nutrisi yang dibutuhkan oleh tanaman.Kata kunci: ammonium; limbah cair; nutrisi; sayuran

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