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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
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.
Arjuna Subject : -
Articles 1,078 Documents
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Sistem Otomasi Photovoltaic pada Pembangkit Listrik Tenaga Surya (PLTS) Berbasis Mikrokontroler Arduino skala lab guyup mahardhian dwi putra; Huswatun Ida Lailatun; Rahmat Sabani; Diah Ajeng Setiawati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1402.9 KB) | DOI: 10.23960/jtep-l.v8i2.130-138

Abstract

Photovoltaic (PV) merupakan suatu alat yang digunakan untuk mengkonversi sinar surya menjadi energi. Untuk memaksimalkan hasil konversi dari Photovoltaic (PV) perlu dirancang dengan posisi Photovoltaic (PV) yang selalu tegak lurus terhadap arah datangnya matahari. Tujuan dari penelitian ini adalah merancang sistem otomasi serta mengevaluasi kinerja alat pembangkit listrik tenaga surya yang bersifat dinamik. Pada penelitian ini digunakan mikrokontroler sebagai sistem kendali, 4 buah rangkaian LDR, dan 2 buah motor servo sebagai output. Sehingga penelitian ini menghasilkan suatu alat berupa PLTS dinamik yang dapat membantu panel surya selalu bergerak ke arah datangnya sinar matahari..
Application of USLE and GIS to predict erosion loss at Brantas Watershed Indarto Indarto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v8i2.76-85

Abstract

Erosion processes are still the dominant factor affecting land degradation. The rapid calculation of erosion loss is urgently required for conservation planning and management at the watershed level. This paper is reporting the use of USLE method and GIS at Brantas Watershed. The digital layer data of rainfall from 2005 to 2014, soil types, land use, and DEM (from ASTER GDEM2) were used as the main input. The research procedures consist of (1) data inventory dan preparation, (2) calculation of the erosion factors (R, K, LS, CP), and (3) calculation and classification of the erosion hazard. The erosivity factor (R) is calculated from the analysis of annual rainfall data. The erodibility factor (K) is obtained using analysis of soil type map. The length and slope factor (LS) is calculated from the DEM and Soil layer data. The crop cover and conservation activities (CP) is interpreted from RBI maps year 2014. The results showed that the erosion hazard in Brantas Watershed dominated by very low with predominantly the erosion yield of 0,96 ton/ha/year. Thus required conservation and watershed management activities to prevent an increase erosion hazard in the Brantas Watershed.Keywords: erosion yield, USLE, GIS, Brantas, Watershed
Implementation Of Automatic Hydroponic System Design For Shallot (Allium Ascalonicum L.) Cultivation And Cost Analysis Simulation Annisa Nur Rachmawaty; Sugeng Triyono; Siti Suharyatun; Mareli Telaumbanua
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1969.876 KB) | DOI: 10.23960/jtep-l.v8i2.139-152

Abstract

Hydroponic shallot cultivation is one way to increase shallot production on marginal land. To support the cultivation, this research was designed that aimed to develop an automatic hydroponic system, simulation of cost analysis, and profit prediction on shallot cultivation.The study was conducted by arranging a hydroponic design with a height of 100 cm, length 3 m, and width of 60 cm. The growth media is made from husk charcoal with a depth of 15 cm.114 cloves of shallots are sown and moved after the buds develop about 5 cm, a distance of 10x15 cm. The research parameters included pH, EC, air content, and plant growth. Three scenarios of the hydroponics systems were simulated to elaborate cost and profit estimation. The three scenarios included scaling up the cultivation beds, ten year cultivation, and productivity from three types of hydroponics modules. The results showed that during hydroponics cultivation of shallot, EC of nutrient solution was elevated to the last level of 3106 μS/cm, while pH was found to be 7.58. The control system is able to activate the pump with 100% accuracy. The yield of the shallot was 0.0154 kg/m2 with average tuber diameter of 10-15 mm.  This production was suboptimal, yet profit and cost comparisons could be clearly described through the simulations of three types of hydroponics modules.  The results of the simulation of economic analysis, the highest B / C ratio obtained from the use of hydroponics on land is 1.53. Keywords: cost and profit analysis, hydroponics cultivation, nutrition solution, shallot
Studi Kuantifikasi Pencampuran Kopi Dekaf - Non Dekaf Menggunakan Uv-Vis Spectroscopy dan Regresi PLS Galih Pratama; Diding Suhandy; Meinilwita Yulia; Iskandar Zulkarnain
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1904.631 KB) | DOI: 10.23960/jtep-l.v8i2.86-96

Abstract

Kopi dekaf adalah kopi rendah kafein yang memerlukan proses tambahan waktu dan biaya sehingga harganya cukup mahal. Kopi dekaf biasanya dijual dalam bentuk bubuk dan sangat sulit untuk dibedakan dengan mata. Untuk itu pada penelitian ini, UV-Vis spectroscopy diujicobakan untuk mendeteksi adanya pencampuran pada kopi dekaf dengan kopi non dekaf. Bahan yang digunakan setiap sampel adalah 1 gram, dengan jumlah sampel sebanyak 100 sampel dengan komposisi dekaf : non dekaf = 10% : 90%, 20% : 80%, 30% : 70%, 40% : 60%, 50% : 50%, 60% : 40%, 70% : 30%, 80% : 20%, 90% : 10%, dan 100% dekaf murni. Pada penelitian ini menggunakan metode regresi partial least squares (PLS) dengan program The Unscrambler versi 9.2. Persamaan kalibrasi terbaik diperoleh untuk tipe spektra Smoothing S. Golay dan SNV pada panjang gelombang 250-450 nm. Persamaan ini memiliki nilai koefisien determinasi yaitu l = 0,99 dan = 0,98,  Nilai RPD 6,61 dan faktor (F) = 2, sedangkan nilai SEC = 2,1 % dan SEV = 4,4 % dengan selisih SEC dan SEV yang paling rendah yaitu 2,3%. Dengan uji beda dua sampel berpasangan pada taraf kepercayaan 95% dapat dibuktikan bahwa kandungan kopi dekaf aktual dan prediksi tidak berbeda nyata.
Manajemen Irigasi Pembibitan Sawit (Elaeis guineensis) Presisi dengan Cropwat 8.0 Lisma Safitri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1994.874 KB) | DOI: 10.23960/jtep-l.v8i2.97-106

Abstract

The accurate water use information at each stage of plant growth is important to better understand the efficient and precise crop water requirement for optimal plant productivity. Nurseries of palm oil are a phase where young palm oil requires extra maintenance, particularly in meeting the plant water needs. The palm oil in the nursery phase require the regular irrigation schedule due to the vulnerable root systems. The purpose of this study was to calculate the oil palm water requirement with Cropwat 8.0 toward the precise irrigation management and provide a scenario for irrigation scheduling in palm oil nursery. The study was conducted in palm oil main nurseries at KP2 Instiper Yogyakarta with site-specific climate data and soil properties. The method used is analyzing climate data and soil properties and simulating crop water requirements, actual water use and irrigation scheduling with Cropwat 8.0. Based on the results, the average of crop water requirement (ETP) of palm oil in main nursery is 3.4 mm / day. Based on the water deficit scenario from rainfall and crop water requirements, irrigation is scheduling in April for 1.4 mm, May for 18.3 mm, June for  3.5 mm, July for 44.1 mm and August for 42.8 mm. On a daily scale and taking into account the availability of soil moisture and the water retention of plant roots, the net irrigation scheduling is given at an average of 2.2 mm / day and gross irrigation of 6 mm / day which is given daily depending on rainfall and plant age.
UJI KINERJA DAN ANALISIS EKONOMI MESIN PENEPUNG BIJI JAGUNG (Studi Kasus di Desa Cikawung, Kecamatan Ciparay, Kabupaten Bandung) Wahyu K Sugandi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1308.417 KB) | DOI: 10.23960/jtep-l.v8i2.107-119

Abstract

Animal feed is substantial in the livestock industry. There is a stock breeder in Cikawung, Ciparay sub-district for enlarging broiler chicken. But the breeder has constraints with the high prices of animal feed. Otherwise, high amount of corn is an opportunity for breeders to save operational cost for animal feed. The purpose of this research was to test the performance and economic analysis on corn milling machine whose have been developed by Agricultural Machinery Laboratory of FTIP Unpad and applied to breeder. The method used in the research is descriptive analysis by measuring and calculating on performance and economic feasibility of machine. The result of machine performance test showed the theoretical capacity for 54,53 kg/hour, actual capacity is 29,73 kg/hour, machine efficiency is 54,52%, actual power requirement of machine without load and with load are 3,12 HP and 4, 37 HP, engine fuel consumption with no-load and loads of 0,96 liters/hour and 1,41 liters/hour, thermal efficiency ranges from 21-28%, shrinkage losses 2,65%, yield 97,35%, engine noise level of 83 dB, and with load of 86,93 dB, and engine vibration rate exceeding 4,5 mm/s (not allowed). The results of economic analysis showed that BEP achieved after the machine produces 48.657,83 kg corn flour. The corn milling machine fulfilled the criteria of economic feasibility indicated by positive NPV value, IRR of 25,67%, B/C Ratio of 1,012 and PBP for 2,75 years.
The Effects Of Empty Fruit Bunch Treatments For Straw Mushroom Substrate On Physicochemical Properties Of A Biofertilizer Sugeng Triyono; Agus Haryanto; Dermiyati Dermiyati; Jamalam Lumbanraja
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1282.367 KB) | DOI: 10.23960/jtep-l.v8i2.120-129

Abstract

This research aims to elaborate characteristics of an organic fertilizer, named as “Organonitrofos”, produced from agricultural wastes supplemented with spent mushroom substrate (SMS) from oil palm empty fruit bunch (EFB).  After the experiment of the straw mushroom cultivation was over, the spent EFB was used as one of raw materials for the experiment of Organonitrofos bifertilizer production. Completely Randomized Design was implemented in the experiment of mushroom cultivation.  Tereatments consisting of inorganic fertilizer and organic fertilizer factors were applied on the EFB substrate preparation.  The inorganic fertilizer and the organic fertilizer each included 3 levels of doses, with 3 replications.  After the experiment of the straw mushroom cultivation was over, the spent EFB was used in the experiment of the organic fertilizer production.  The spent EFB was mixed with other materials using ratio of 1:1 by volume.  The other materials constisted of cattle manure, chicken litter, cocodust, rice husk ash, and MSG industry waste sludge with ratio of 6:1:1:1:1 by volume.  After all the materials of every experiemental unis were mixed, fermentation of organic biofertilizer was started with the treatment and the experimental design held the same as those used in the experiment  of the mushroom production.   The results showed that there was no significantly different among the parameters observed at p<0.05. Winthin 3 month priod of fermentation; however, the screened portion of the compost produced increased to 88.54±1.69% of total weight.  C-N ratio (12.80±0.55), organic C (16.11±0.59), total N (1.26±0.59), total P (3.04±0.19), and total K (0.42±0.04) of finished compost met the SNI  19-7030-2004 requirement.  Dry weight  lost of 2.58±0.59 and ash of 53.96±1.42 content were noted from the finished compost.  The organic C content and some other chemical proserties were relatively better than those in previous variants of Organonitrofos.   Keywords: Compost, Empty fruit bunch, Organic fertilizer
FUNGSIONAL BEVERAGES INSTANT GINGER POWDER (Zingiber officinale rosc)WITH THE ADDITION OF BULBULUS EXTRACT VARIATION (Eleutherine Americana Merr) AS NATURAL DYES Rifkowaty, Encik Eko
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 4 (2015): Special Edition
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (245.24 KB)

Abstract

Antioxidant is a good compound for health because it scavenges free radicals in the body. The addition of bulbulus extract is expected to increase the antioxidant activity of the instant ginger powder. This study aimed to determine the effect of variation bulbulus extract addition on moisture content, reducing sugar, and antioxidant activity, as well as  preferency of instant ginger powder. Research was conducted using Completely Randomized Design (CRD) consisting of single factor with three (3) repeatitions. Organoleptic test was peformed on three attributes: namely color, taste, and texture. Result showed that the addition of bulbulus extract, Based on Anava and LSD test of the moisture content and reduction sugar, every treatment was significantly different. However, teh treatment did not  significant affect on the antioxidan activity. GC-MS analysis, enriched with bulbulus extract show that instant gnger powder it is assumed that the variation of of bulbulus extract addition bubulus extract contain important  of compounds such as eleuthherol (88,79 %), gingerol (1,18 %)and zingiberene( 10,03 %). Organoleptic test demonstrate that the addition of consumerKeywords: instant ginger powder, bulbulus extract, antioxidant, preferensi
Karakterisasi Pelet Pupuk Organik Berbahan Slurry Limbah Cair Pabrik Kelapa Sawit Sebagai Pupuk Slow Release Reni Astuti Widyowanti; Nuraeni Dwi Dharmawati; Etty Sri Hertini; Rengga Arnalis Renjani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1301.31 KB) | DOI: 10.23960/jtep-l.v8i3.187-197

Abstract

The high availability of slurry from palm oil mill effluent, solid, and boiler ash with their nutrient contents make those three materials are potential to be processed become organic fertilizer in the form of pellet so it tends to has slow release characteristic. This research aims to analyize characteristic of organic fertilizer pellet from slurry of palm oil mill effluent as slow release fertilizer by analyzing its physical characteristics, NPK content, and NPK releasing rate in soil.Slurry was processed become solid fertilizer in the form of pellet using pellet mill with tapioca adhesive 5%. Pellet was made from slurry, solid, and boiler ash which were mixed with ratio 1:1:1, 1:2:2, 2:1:1, 2:2:1, 2:1:2, 1:0:0 (only slurry). This research ware analysis of physical characteristis (length, diameter, and density) and analysis of NPK content. N content was analyzed using Kjeldahl method, P content using spectrophotometer, and K content using Atomic Absorbtion Spectrophotometer (AAS). Then it was continued with analysis of NPK releasing content in latosol soil.The average length of pellets was 31–48 mm, diameter was 5,42 – 6,28 mm, water content was 0,426 – 0,976%, particle density was 1,04 – 1,34 g/cm3, and bulk density 0,49–0,63 g/cm3. Organic fertilizer pellet in six formulas contained N+P2O5+K2O about 5,93–8,08%. The highest content (8,08%) was produced from 1:0:0 pellet, followed by 2:1:2 formula (7,53%), and 1:2:2 formula (7,25%). Until the 10th days, the releasing of N element was about 1,99 – 3,18%, P element was 0,063– 0,075%, and K element was 43,54 – 62,26%.
RANCANG BANGUN SISTEM PENGADUK DAN PEMBUAT PUPUK CAIR LIMBAH KELAPA SAWIT DAN NANAS OTOMATIS DENGAN METODE AEROB, SEMI AEROB, ANAEROB Mareli Telaumbanua; Dermiyati Dermiyati; Radix Suharjo
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 4 (2019): Desember
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v8i4.234-242

Abstract

Di Indonesia, Tandan kosong kelapa sawit (TKKS) dan rimpang nanas banyak melimpah sebagai hasil samping dari agroindustri nanas dan kelapa sawit. Meskipun limbah agroindustri ini merupakan sumber bahan organik berupa biomasa tropika yang memiliki potensi sebagai pupuk organik namun juga memiliki kendala dalam proses dekomposisinya karena belum tersedia starter (mikroba pengurai) yang sesuai sehingga dapat mengakibatkan permasalahan lingkungan. Tandan kosong kelapa sawit yang dibiarkan begitu saja dapat menjadi sumber hama dan penyakit bagi tanaman kelapa sawit. Demikian juga, rimpang nanas yang tumbuh liar dan menghasilkan tunas baru menjadi sulit untuk dikendalikan dan dapat mengganggu pertanaman nanas untuk produksi.Sejauh ini belum ada penelitian tentang potensi Mikroorganisme Lokal (MOL) yang berasal dari tankos sawit dan rimpang nanas sebagai pupuk hayati yang mengandung unsur mikro-makro dan vitamin yang dibutuhkan oleh tanaman, serta starter (mikroba pengurai), zat pengatur tumbuh dan inhibitor untuk mengatasi permasalahan limbah tankos sawit dan rimpang nanas. Agar pengolahan limbah untuk mendapatkan pupuk hayati dapat maksimal, dapat menggunakan sistem pengolah limbah otomatis yang mampu melakukan variasi metode dalam pengolahannyaSarana yang digunakan untuk mendapatkan pupuk hayati di atas adalah dengan memanfaatkan rancangan sistem yang mampu mengolah limbah hayati dengan tiga metode yaitu aerob, anaerob dan semi aerob secara otomatis dan lebih presisi. Alat ini mampu melakukan pengadukan secara otomatis selama proses dekomposisi bahan organik di dalamnya. Alat ini juga dilengkapi dengan sensor suhu yang mampu memperdiksi tinggi rendahnya proses dekomposisi bahan organik di dalam tangki. Melalui alat ini dapat diperolehnya pupuk cair terbaik dengan proses pengolahan yang lebih bervariasi.

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