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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 7 Documents

Search results for , issue "Vol 8, No 1 (2019): MARET" : 7 Documents clear

STUDI EFEKTIVITAS HERBICIDING GULMA LAHAN KERING PADA BERBAGAI METODE PENGABUTAN Gatot Pramuhadi; Muhammad Naufan Rais Ibrahim Rais Ibrahim; Henry Haryanto; Johannes Johannes
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
Publisher : The University of Lampung

Studi kinerja pengendalian gulma lahan kering (herbiciding) pada berbagai metode pengabutan perlu dilakukan untuk membantu petani dalam menentukan pengabutan herbisida optimum. Tujuan studi ini adalah menentukan efektivitas pengabutan untuk herbiciding pada berbagai metode pengabutan berdasarkan tekanan cairan dan tekanan udara. Pengabut, atau sprayer, yang digunakan dalam penelitian ini terdiri atas mist blower TASCO MD-150, electric / battery sprayer JITU HX-D18F, dan air blower BOOSTER, sehingga dapat dilakukan penelitian pengabutan dengan 3 perlakuan, yaitu: (1) pengabutan oleh tekanan udara (mist blower), (2) pengabutan oleh tekanan cairan (electric sprayer), dan (3) pengabutan oleh tekanan cairan dan udara (electric sprayer + air blower). Pengujian ketiga metode pengabutan dilakukan di dalam Laboratorium Alat dan Mesin Proteksi untuk menentukan debit pengabutan efektif, lebar pengabutan efektif, diameter droplet, dan kerapatan droplet. Pengujian juga dilakukan di areal lahan kering untuk menentukan kapasitas keluaran dan persentase gulma mati. Analisis dilakukan guna menentukan efektivitas pengabutan pada berbagai metode pengabutan berdasarkan tekanan udara, tekanan cairan, serta gabungan tekanan udara dan cairan. Hasil penelitian menunjukkan bahwa besar debit pengabutan efektif, lebar pengabutan efektif, diameter droplet, dan kerapatan droplet pada perlakuan pengabutan oleh tekanan udara, pengabutan oleh tekanan cairan, dan pengabutan oleh tekanan cairan dan udara berturut-turut sebesar [0.679 liter/menit, 64 cm, 357.95 µm, 294.99 droplet/cm2], [1.039 liter/menit, 80 cm, 430.12 µm, 89.42 droplet/cm2], dan [1.616 liter/menit, 56 cm, 292.83 µm, 55.48 droplet/cm2]. Besar kapasitas keluaran dan efektivitas pengabutan pada perlakuan pengabutan oleh tekanan udara, pengabutan oleh tekanan cairan, dan pengabutan oleh tekanan cairan dan udara berturut-turut sebesar [6.40 liter/ha, 90.44%], [4.02 liter/ha, 74.99%], dan [3.84 liter/ha, 91.81%]. Semakin kecil ukuran (diameter) dropletnya, maka akan semakin mudah droplet masuk ke stomata gulma sehingga menghasilkan efektivitas pengabutan yang semakin besar dan pemberian aplikasi larutan herbisidanya paling hemat.

Performance Analysis Of Cilembu Sweet Burning Using Oven Fuel Based Liquified Petroleum Gas (LPG) Ahmad Thoriq; Asri Widyasanti
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v8i1.57-64

Cilembu sweet potato are a commodity typical of West Java's Sumedang district which will produce tasty, sweet, legit flavors and honey when burning using an oven. The conversion program of fuel oil to gas indirectly encourages modification of the cilembu sweet potato oven. The aim of this research is to test the performance of gas-fired ovens and observe the characteristics of cilembu during burning. Cilembu sweet potato burning in this study are cilembu sweet potatoes which have been stored for more than ten days, with grade B sizes (100-200 grams / tuber) and grade C (<100 grams per tuber) (SNI Number 01-4493-1998) . The burning performance parameters analyzed included the yield and weight of burned Cilembu sweet potatoes, energy to heat and increase the temperature of the material, energy to vaporize water, energy requirements for cilembu sweet potato burning process, LPG combustion energy, grill efficiency and specific energy consumption. The results showed that the burning process of 10.5 kg cilembu sweet potatoes using an oven with a temperature of 39 0C to 176 0C took 1.22 hours. The average decrease in water content during the burning process is 0.566% bb per minute for grade C and 0.368% bb per minute for grade B with the yield of burned cilembu sweet potato produced at 77.38%. Energy requirements for the cilembu sweet potato burning process were 9,410.68 KJ, LPG combustion energy was 177,050.78 KJ, burning efficiency was 5.32% and Specific Energy Consumption was 44.034,82 KJ / Kg of water vapor.

Uji Kinerja Unit Mesin Pasteurisasi Tipe Kontinyu untuk Pengolahan Sari Buah Sirsak Suparlan Suparlan; Uning Budiharti; Astu Unadi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v8i1.10-19

Soursop fruit is one of the horticultural products that are easily damaged after the maturation process. This fruit is generally consumed in the form of fresh ripe or juice. The quality of the fruit is also very diverse and at harvest time the amount is abundant so the selling price tend to be low. One alternative to increase the added value of soursop fruit which the quality is poor and to extend the shelf life can be done through processing into juice. This study aims to test the performance of continuous type pasteurizer unit which has been developed by the Indonesian Center for Agricultural Engineering research and Development (ICAERD) in the processing of soursop juice on a small scale industry. The pasteurizer unit consists of a mixer, pasturizer, holder, filler, and cup sealer. The process of soursop juice processing includes fruit bunching, skin peeling, burial, mixing and dilution of slurry, fruit juice pasturization, and packaging. The pasteurization process was done at 80 ºC for 5-10 minutes. The pasteurization temperature is achieved at pavor pressure on water heating tube of about 1.0-1,5 bar. Under these conditions the capacity of continuous type pasteurizer unit was 160 l/h. The resulting juice has a TPC content on days 0, 7, and 14 after storage was 4.8 x 102, 5.1 x 102, and 1.9 x 103 cfu/g, respectively. The heavy metal content of Cu and Pb were 0.63 and 0.29 ppm, respectively.Keywords: performance test, pasteurizer, continuous type, soursop juice processing, value added product.

Aplikasi Sistem Informasi Geografis Untuk Analisis Potensi Alat dan Mesin Pertanian Kabupaten Lampung Tengah Dodi Setiawan; Mohamad Amin; Sandi Asmara; Ridwan Ridwan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
Publisher : The University of Lampung

Penerapan alat dan mesin pertanian (alsintan) merupakan salah satu upaya mewujudkan kedaulatan pangan di Indonesia. Alsintan dinilai mampu meningkatkan produksi pertanian dengan mempercepat pekerjaan petani hingga mengurangi kehilangan hasil panen saat proses panen maupun pasca panen. Dalam penerapan alsintan dibutuhkan adanya proses analisis untuk mengetahui potensi wilayah dan potensi jumlah yang dapat diterapkan dan penambahan. Penelitian ini dilakukan dengan objek penelitian kabupaten Lampung Tengah dan 3 (tiga) alsintan yaitu Traktor Roda Dua, Rice Transplanter, dan Combine Harvester, dengan tujuan mengetahui potensi wilayah penerapan dan potensi jumlah yang dapat diterapkan dan ditambahkan dengan menggunakan software ARCGIS 10.3. Metode yang digunakan adalah Overlay/tumpang susun dan skoring dengan data spasial berupa peta kemiringan lereng, peta jenis tanah, dan peta curah hujan. Hasil penelitian ini menunjukan bahwa mayoritas lahan sawah di Lampung Tengah masuk dalam kategori Potensi Wilayah II (Dua) yaitu 92,76% sedangkan sisanya adalah Potensi Wilayah I (satu) ada 7,24%, dan Potensi Wilayah III (tiga) tidak ada atau 0%. Untuk potensi jumlah penerapan terbanyak adalah Rice Transplanter yaitu 22.321 unit dengan potensi penambahan 22.171 unit. Traktor Roda Dua memiliki potensi penerapan sebanyak 10.147 unit dengan potensi penambahan 4.369 unit. Combine Harvester memiliki potensi penerapan sebanyak 3.190 unit dengan potensi penambahan 3.155 unit.

Trend and spatial variability of 1-day extreme rainfall from 1980 - 2015: study at the adminisitrative area of UPT PSDA Pasuruan Indarto Indarto; Askin Askin; Muhammad Dian Nurul Hidayat
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
Publisher : The University of Lampung

This study aims to analyze trends, shift and spatial variability of extreme-rainfall in the area of UPT PSDA Pasuruan. The daily rainfall data from 64 stations from 1980 until 2015 were used as main input. The 1-day extreem rainfall data is determined as the maximum annual of 24-hour rainfall events. The statistical analysis using Mann-Kendall, Rank-Sum, and Median Crossing Test using significance level α = 0,05. The spatial variability of extrem rainfall data is described using average annual 24-hour rainfall during the periods of record. Each station is represented by one value. The values are then interpolated using IDW interpolation methods to maps the spatial variability of extreem rainfall event. The results show the value of statistical test for each stations that show the existing trend, shift, or randomness of data. The result also produce thematic maps show the spatial variability of extreme rainfall and the value of each trend.

Effect of Temperature and Time Storage to pH and Color Changes of Palm Sap (Arenga pinnata Merr) after Tapping Ansar Ansar ANSAR; Nazaruddin Nazaruddin; Atri Dewi Azis
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
Publisher : The University of Lampung

Flos masculus at palm can be produced a palm sap after tapping process. Palm sap have quality degradation due to effect environment temperature. The purpose of the study was to evaluate the effect of temperature and storage time to changes pH and color of palm sap after tapping. The research samples were obtained from farmers in Pusuk, West Lombok, NTB. The research parameters were observed is changes pH and color of palm sap during storage. The sample of the research was storaged at temperature variation of 10, 29, and 40oC, and then observed each 2 until 10 hour. The results of the research showed the temperature and time storage was affected to pH and color palm sap after tapping. After 10 hour pH of palm sap changed from 7.0 to 2.6 at temperature of 40oC, 4.8 at temperature of 29oC, and 6.6 at temperature of 10oC. Palm sap which storage at temperature 10oC has pH quality decrease is lowest than at temperature of 29 and 40oC. The higher temperature storage, the bigger pH decrease. The pH decreases, the L* and b* values also decrease significantly, but the value of a* does not change significantly at various storage temperatures.

KINERJA SISTEM IRIGASI TINGKAT TERSIER UPTD TRIMURJO DAERAH IRIGASI PUNGGUR UTARA Haposan Maditua Simorangkir; Ridwan Ridwan; M Zen Kadir; Mohamad Amin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
Publisher : The University of Lampung

Daerah Irgasi Punggur Utara UPTD Trimurjo merupakan salah satu daerah irigasi yang mengairi sawah fungsional seluas 4.846 ha dari luas baku 6.196 ha. Seiring dengan perkembangan waktu, kondisi perubahan alam sekitar, dan kondisi sosial budaya ekonomi masyarakat sekitar maka suplai dan kebutuhan akan air irigasi untuk mengairi areal sawah yang berada di Daerah Irigasi Punggur Utara UPTD Trimurjo mengalami perubahan. Perubahan kondisi jaringan irigasi dan bangunan pelengkapnya berdampak langsung pada debit air yang dikeluarkan melalui jaringan irigasi tingkat tersier. Berlatar belakang dari permaslahan tersebut maka perlu dilakukan penelitian untuk mengetahui kerapatan saluran dan bangunan jaringan irigasi, kerumitan jaringan irigasi, efisiensi penyaluran air, dan kinerja sistem irigasi tingkat tersier UPTD Trimurjo dari aspek yang dinilai. Penelitian dilakukan dengan metode pengumpulan data sekunder dan data primer. Pengambilan sampel penelitian menggunakan metode stratified purpossive random sampling. Sampel yang diperoleh menggunakan metode stratified purpossive random sampling adalah sebanyak 14 sampel dari 85 petak tersier di UPTD Trimurjo. Dari hasil penelitian diperoleh nilai kerapatan saluran rata-rata sebesar (KS) 70,59 m/ha, kerapatan bangunan rata-rata sebesar (KB) 0,18 Unit/ha, nilai kerumitan jaringan irigasi pada variabel (β) 2,15 ruas/bak bagi dan variabel (θ) rata-rata 810,53 m/bak bagi, dan efisiensi penyaluran air rata-rata sebesar 80,09%. Hasil perhitungan kinerja sistem irigasi tingkat tersier melalui penilaian setiap aspek baik fisik maupun nonfisik mencapai 84,56 %. Hasil penilaian yang dilakukan pada penelitian ini menunjukan bahwa kinerja sistem irigasi pada tingkat tersier di UPTD Trimurjo Daerah Irigasi Punggur Utara sudah sangat baik. Kata kunci: Kinerja sistem irigasi, Sistem irigasi, Irigasi tingkat tersier, Trimurjo, Daerah irigasi punggur utara

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