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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 10 Documents

Search results for , issue "Vol 4, No 3 (2015)" : 10 Documents clear

THE INFLUENCES OF AVAILABLE SOIL WATER DEPLETION FRACTION TO GROWTHS AND YIELDS OF THREE SOYBEAN (Glycine Max (L) Merril) VARIETIES Ardiyasa Komang
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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The objective of this research was to find out the influences of available soil water depletion fraction to growthsand yields of three soybean varieties. This research used a factorial design in a completely randomized designwith the first factor was the available soilwater depletion fraction (p), which contained of three treatment levelsof (p); they were p1 (p=0.2 AW), p2 (p=0.4 AW), and p3 (p= 0.6 AW). The second factor was soybean varietiescontaining of three varieties; V1 = Willis, V2 = Kaba, and V3 = Tanggamus, which were repeated three times.Irrigationwas conducted when soil water levels was close to or above threshold of available soilwater depletionwhichwas determined bymeasuringwater level at gypsumblock and ohmmeter device. Irrigationwas conductedby returning water level to field capacity condition. Treatment of available soil water depletion fraction for theplants influences soybean in growth phase ofWilis (V1) variety, Kaba (V2) variety and Tanggamus (V3) variety.Observation data frominweek 8 of three showed that the highest stemgrowthwas in Kaba variety (55.87 cm) atp2 treatment (p=0.4 AW). The highest leave amountwas Kaba variety (66.93 leaves) at treatmentp2 (p=0.4 AW).The highest production was in Kaba variety (71.33gr) at treatment p2 (p=0.4 AW). The highest irrigationnecessitywas in treatment p2with 18mm water irrigation, and then followed by p3with 13.5mm and finally p1with 9mm. The lowirrigationwater necessity was influenced by high rainfall level of 578mmwith 32 rainy daysduring research.Keywords: soybeans,available soilwaterdepletion fraction, gypsumblock

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

QUALITY CHARACTERISTIC OF CARRAGEENAN SEAWEED KAPPAPHYCUS ALVAREZII WITH DIFFERENT BLEACHING TREATMENT: QUALITY ASSESSMENT OF ORGANOLEPTIC AND PROXIMATE Irma Suryani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

This research was aimed to determine the effect of bleaching method at different bleaching places and type ofwater soaking toward the quality of seaweed. This research uses a randomized factorial design. It consists of 2factors;which are type of bleaching place and type of soaking. At the first factor, there are two levels, namely thelevel of seawater and freshwater. On the second factor there are two levels, namely the level of land soaking andsea soaking. The results of the research showed that the bleaching treatment at sea with the type of sea watersoakingwas thebest treatment based onseveral parameters: byProximate,Organoleptic, and bleaching treatmentswith different soaking.Keywords: Kappaphycus alvarezii, carrageenan, organoleptic, proximate.

THE EFFECT OF SCREWANGEL AND COMMODITIES TO PERFORMANCE OF SCREWCONVEYOR ON TWO VARIATIONS ANGULAR SPEED Imanda, Jordhy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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The aims of this research were to make and test the material transportation device of grains dan legumes(corn, soybean, and green beans) screw type (screw conveyor), to find the effect of screw angle (Î±) andcommodities to performance of screw conveyor, and to find out the best screw angle (Î±) and commodity toperformance of screw conveyor for each angular speed those are 40 and 54 rpm. This research has beenconducted on December 2014 until February 2015. This research was conducted in two phases, those arecreating device which conducted in CV WIDODO, Kuripan village, West Teluk Betung sub-distric, BandarLampung and testing was conducted at the Laboratory of Power and Agricultural Machinery, AgriculturalEngineering Department, Faculty of Agriculture, University of Lampung. This research was conducted inthree different screw angles, those are 30Â°, 45Â°, dan 60Â°. Later, these three different screw angles is subjectedto three repetitions and in two different angular speed (rpm), those are 40 rpmand 54 rpm. The results showthat the best working capacity of screw conveyor on the variation of screw angle and commodities for eachangular speed for 40 rpm on soybean and 30Â° screw angle is about 178,6 g/s, while for 54 rpm on greenbeans and 30Â° screw angle is about 238 g/s. It can be indicate that speed rotation (rpm) and screw angelaffect significantly on screw conveyor;s working capacity.Keywords : Screw conveyor, screw angel, grains and legumes

THE EFFECT OF EVAPOTRANSPIRATION DEFISIT 0N WATER PRODUCTIVITY AND GROWTH OF SOYBEAN PLANTS (Glycine max L. Merrill) Wijaya, I Ketut Adi Putra
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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Soybean is an efficient source of vegetable protein. National soybean production continues to decline during2010-2012. The lowproductivity of soybean is one of them caused by drought stress. Therefore, it is necessary touse cultivation techniques which can improve the efficiency of water use, ie with deficit irrigation. Deficitirrigation can be evaluated by calculating the amount of crop water productivity. The purpose of the research isto calculate andcompare themagnitude of cropwater productivity andgrowth of three varieties of soybeanplantsin each treatment evapotranspiration deficit. Researchwas conducted in September 2014 -December 2014 in thegreenhouse of IntegratedField Laboratory and LaboratoryofWaterResourcesand LandDepartment ofAgriculture,University of Lampung.The experimentwas conducted using a factorial in completely randomized design (CRD)with two factors that is soybean varieties which consists of three varieties: Kaba, Tanggamus, and Willis anddeficit ETC which consists of three levels: 1.0 x ETC, 0.8 x ETC, and 0.6 x ETC. Data were analyzed with Analysis OfVariance (Test F), then continued by LSD test at the significance level of 5% and 1%. Results showed that: (1)based on the total leaf area, Kaba and Wilis varieties of soybean plants have started stress at week 2nd in thetreatment ET2 (0,8 x ETC), varieties Tanggamus began stress on the 3rd week of the treatment ET3 (0,6 x ETC).Eventually based on the production of soybeans plant, varieties Tanggamus andKaba remains stress in treatmentET2 (0,8 x ETC) except varietiesWillis on ET3 (0.6 x ETC), (2) the crop water productivity was not significantlydifferent between treatments except treatment Tanggamus varieties ET3 deficit (0, 6 x ETC), (3) Kaba varietieshave the highest production in the amount of 20.22 grams,while the cropwater productivity of the highest of theWilis varieties is equal to 0.5 kg/m3.Keywords: evapotranspiration, deficit irrigation, soybeans

THE EFFECT OF LAMP TYPES ON THE GROWTH AND PRODUCTION OF LETTUCE GROWN IN AN INDOOR HYDROPHONIC SYSTEM Restiani, Ag Reni
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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The objective of this research was to evaluate responses of grand rapid lettuce (Lactuca sativa L.) grown in anindoor hydrophonic system(awick system) under the treatments of some different types of lighting. The researchwas conducted in April to June 2015. The treatment in this reearch consisted of a single factor (types of lighting)with five levels: Sun lighting (N0), 2 tubes of 18Watt fluorescent lamp (N1), 2 sets of 36Watt LED + 1 tube of 150Watt halogenlamp (N2), 2 setsof 36Watt LED+ 2 tubes of18Watt fluorescent lamp (N3), and 150Wattbulb (N4).Each treatment consisted of four plantswhichwere grown in a 60 cmx 60 cmx 120 cmgrowth chambermade ofplywood, except for sun light treated plantswhich were placed inamini greenhouse. Results showed that amongthe plants in the growth chambers, the best vegetative growthwas shown by the lettuce in the treatment of 2 setsof 36Watt LED + 2 tubes of 18Watt fluorescent lamp (N3), However; compared to those plants grown under thesun light, the lettuce inN3 still looked etiolation because light intensitywas not optimal yet.Keywords: Lamp types, lettuce plants, wick systemhydroponic

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.

APLICATION OF ETHYLENE ABSORBEN PACKAGING ON GUAVA (Psidium guajava L.) STORAGE Dwi Dian Novita
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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Ethylene production of guava fruit (Psidiumguajava L.) increased in ripening phase. Tomaintain the quality offruit so the ethylene should be reduced fromstorage roomto inhibited respiration rate. The aims of this researchwere: (1) to find out the effect of KMnO4 against guava shelflife based on weight lose, hardness, soluble solidcontent, and vitaminC as parameters, and (2) to known the best treatment. The researchwas use experimentaldesainwith 5 treatmentswereP0=without KMnO4,P1=0,6gKMnO4+absorber, P2=1,2g KMnO4+absorber,P3=1,8gKMnO4+absorber, dan P4=2,4g KMnO4+absorber and 4 repeatation. Datawas analized by Annova and DuncanTest at á=5%. The result showed that shelflife of guava treated by KMnO4was 8 dayswhilewithout KMnO4was 6days. Based on Annova at á=5%, KMnO4 treatment was significant on weight lose and hardnessparameters butwas not significant on soluble solid content and vitamin C parameters. The best treatment in thisresearchwas P4 (2,4g KMnO4+absorber).Keywords: ethylene,KMnO4, guava, shelflife

CLASSIFICATION OF CAPABILITY YIELD ON LAPANG TERPADU LABORATORY AGRICULTURE FAKULTY, UNIVERSITY OF LAMPUNG Iskandar Zulkarnaen
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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Determination of land capabilityof Lapang Terpadu Laboratory FP Unila is very relevant. This researchaims todetermining land capability class on each unit of land in the Lapang Terpadu Laboratory FP Unila. The researchwas conducted from June to October 2013, in the Lapang Terpadu Laboratory FP Unila of approximately 6.784ha area. Thematerials used are a set of secondary datawhich includes climate data, thematicmaps, and chemicalsused for soil analysis in the laboratory. The tools used in this study include: Geographycal Position System(GPS),abney level, ruler, compass, drill ground, ring samples, plastic bags, cameras, laboratory equipment, and stationery(ATK). The studywas conducted by surveymethod. Data physical and chemical properties of the soil obtained byobservation in the field and soil sampling, and then analyzed in the laboratory. Furthermore, the determinationof land capability class is based on inhibiting factors developed by Klingebiel andMontgomery in 1973. LapangTerpadu Laboratory FP Unila has class III, IV, V, and VI, with themain limiting factor for the entire class of landcapability is the steepness of the slopes, except land units 2 is the permeability of the soil rather quickly, and landunits 1 is the threat of flooding. Lapang Terpadu Laboratory FP Unila dominated by land capability class IIIwithland capability class III sub-P4 and III-C,e2, P4 is anarea of 3.989 haor 53.97%, then successivelyfollowed by theclass and sub-class IV land capability -D area of 1,708 ha, or 29.98%, the V-04 area of 0.737 ha or 10.87%, andthe last class VI-E covering an area of 0.351 ha, or 5.17%.Keywords: class slopes, land capability class, inhibiting factors.

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

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 (Â±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.

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