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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Published by Universitas Lampung
ISSN : 2302 559X     EISSN : 2549 0818     DOI : -
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 13 Documents
Search results for , issue "Vol 9, No 3 (2020): September 2020" : 13 Documents clear
Analisa Erosi Metode USLE pada Lahan Sawit Kabupaten Muara Enim Hilda Agustina; Vita Ayu Kusuma Dewi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.157-162

Abstract

Manusia sangat menentukan tindakan kelestarian lingkungan terutama pada tanah dan air.  Manusia sebagai pengguna pada tanah untuk berbagai macam keperluan, terutama sebagai pemukiman dan usaha. Guna menjaga kelestarian pada tanah maka diperlukan pengelolaan tanah yang juga mengikutsertakan tindakan konservasi di dalam kegiatan pengelolaan dan pemanfaatan tanah.  Sebelum dapat menentukan tindakan konservasi untuk kelestarian tanah, maka diperlukan analisa erosi yang dapat diaplikasikan sebagai media untuk menentukan besarnya erosi pada suatu lahan.  Metode USLE (Universal Soil Loss Equation) adalah metode yang dapat diaplikasikan pada wilayah Indonesia sampai sekarang. Perkembangan intensifikasi lahan perkebunan terutama tanaman sawit sangat mempengaruhi kelestarian lingkungan.  Sehingga diperlukan tindakan penanggulangan dini dengan menganalisa erosi dari lahan perkebunan sawit dengan menggunakan metode USLE.
KOMBINASI METODE PENJEMURAN DAN PENGERINGAN TUMPUKAN UNTUK MEMPERBAIKI MUTU BIJI KAKAO KERING Tya Lestari; Leopold Oscar Nelwan; Emmy Darmawati; Samsudin Samsudin; Eko Heri Purwanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.264-275

Abstract

Deficiencies in the drying and stacking methods of cocoa beans can be minimized by using a combination of both to improve quality. The purpose of this study was to obtain physicochemical and organoleptic quality information of dried cocoa beans produced by a combination of drying and stack drying. The treatments analyzed were drying 3, 8 and 16 hours followed by mechanical drying using an air flow of 0.05 m/s and 0.2 m/s at a temperature of 55 °C. As a control is only mechanical drying with two flow rates, up to a water content <6%. Measurement data were analyzed using descriptive statistics and mean values. The best combination of drying and mechanical drying is found in 8 hours of drying with an air flow velocity of 0.05 m/s and 0.2 m/s. The combination of sun and mechanical drying has no effect on physical parameters namely water content and pH, chemical parameters namely total fat and fermentation index. The best color of cocoa beans is produced from a combination of 16 hours of drying with an air flow rate of 0.05 m/s. The lowest free fatty acid levels come from full mechanical drying with an air flow velocity of 0.05 m/s and 3 hours drying in the air flow velocity of 0.2 m/s. The combination of the best treatment based on the special requirements of SNI 2008 about the quality of defective seeds and organoleptic test results were produced by 8 hours drying air velocity of 0.05 m/s and 0.2 m/s. Included in the IB quality class and has the aroma, texture and color most preferred by panelists.       Keywords:   air flow, bed dryer, cacao quality, dried cacao, sundrying
STUDI PEREMAJAAN TANAMAN KELAPA SAWIT DI AREAL LAHAN TANAH MINERAL DAN LAHAN GAMBUT Gatot Pramuhadi; Muhammad Aji Setiawan; Nenda Fuji Putri Daliesta
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.201-212

Abstract

Oil palm trees that are more than 25 years old generally have low productivity of oil palm fruit and will decrease in productivity. For this reason, it is necessary to replant oil palm plants so that their productivity can be maintained high and increased. The aim of this research is to study the technique of replanting oil palm plants in mineral soil areas in the area of Kebun Aek Loba, PT Socfindo, Asahan Regency, North Sumatra Province and in the peatland area of Kebun Mandah Estate, PT Bhumireksa Nusa Sejati, Riau Province. Soil types in the Aek Loba garden area were dominated by mineral soils of the typic hapludult class and made from mother rock tufo toba and young alluvium with a soil pH of 5.5. Mandah Estate plantation area is 100% peat soil with a composition of 74% mature peat (sapric) and 26% medium peat (hemic). Peat is more than 3 meters deep (including very deep peat) and has a crumbly texture so it is easy to erode. The peat soil includes ombrogin peat (formed from large swampy plains), has a high acid content with a pH < 5.5, and has a peat soil density of (1.25 - 1.80) g / cc. Replanting activities in mineral soil areas include ripping, plowing, chipping, holing to planting with a large field capacity (0.04 - 0.72) ha / hour and a total time of completion of work (total field time) of 139.5 hours / ha. Replanting activities in peatland areas include falling, chipping, deboling, holing and planting with a large field capacity (0.06 - 1.25) ha / hour and a total field time of 73.7 hours / ha. Keywords: field capacity, mineral soils, peatlands, replanting, total field time
PERAKITAN PUPUK ALTERNATIF UNTUK BUDIDAYA SAWI PAKCOY (Brassica rapa subsp. Chinensis) DENGAN SISTEM HIDROPONIK RAKIT APUNG Aditia Widya Tama; Suprihati Suprihati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.163-170

Abstract

Pupuk alternatif dapat menjadi solusi untuk budidaya tanaman pakcoy hidroponik tanpa harus menggunakan pupuk Komersial.  Penelitian ini bertujuan untuk menentukan pupuk alternatif yang dapat menghasilkan pertumbuhan dan hasil yang setara dengan pupuk Komersial atau Standart. Penelitian ini dilaksanakan di Kebun Percobaan Kartini, Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana, pada bulan Desember 2019-Februari 2020. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK), dengan 5 perlakuan (pupuk Standar, pupuk Komersial, pupuk Mas’ud, pupuk Hermawan revisi, dan pupuk Tama). Setiap perlakuan diulang 5 kali. Parameter pengamatan meliputi tinggi tanaman, jumlah daun, bobot segar tajuk, diameter bonggol, dan luas daun. Hasil pengamatan dianalisis dengan menggunakan sidik ragam (uji F 5%), sedangkan Duncan Multiple Range Test dengan selang kepercayaan 95% digunakan untuk uji lanjutnya.  Hasil penelitian menunjukkan bahwa perlakuan pupuk Komersial memberikan hasil bobot segar seberat 265,11gram pertanaman yang tidak berbeda nyata dengan pupuk Mas’ud yaitu 209,52 gram. Sedangkan pupuk Tama berbeda nyata dengan pupuk Komersial dan Mas’ud, tetapi dapat digunakan untuk pupuk alternatif dengan hasil 153,87 gram per tanaman. Kata kunci: hasil, hidroponik, pakcoy, pertumbuhan, pupuk
Cover Volume 9 Nomor 3 September 2020 Ahmad Tusi, MSi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.%p

Abstract

PENGARUH KADAR AIR TERHADAP NILAI WARNA CIE PADA GULA SEMUT Hary Kurniawan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.213-221

Abstract

Colour is one of the essential attributes as product quality criteria that determine the acceptance of a product by consumers. Granulated palm sugar is a crystalline form, which is hygroscopic. The purpose of this study was to study the colour changes through the CIELab (L, a and b) colour system to the changes in the moisture content of granulated palm sugar during storage. Changes in the values of L, a and b were observed during storage at 30oC and 76% RH. The results showed that the moisture content of granulated palm sugar increased from 3.84% wb to 8.40% wb for 10 hours of storage. The L value tends to decrease with an increasing water content which causes it to turn dark brown. While the cost of a tends to increase with increasing moisture content, the colour of the granulated palm sugar to reddish. The same thing happened to the value of b, which increases with the moisture content of granulated palm sugar and causes it tends to yellowish. Thus the change in ant sugar moisture content gives a significant difference to the L, a and b values during storage.
KAJIAN KARAKTERISTIK FISIK, MEKANIK DAN AERODINAMIK DAUN TEH HASIL PETIKAN YANG TELAH DILAYUKAN Agus Sutejo; Mardjan Suro Sutrisno; Hermawan Wawan; Desrial Desrial
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.171-183

Abstract

The design of the wilted tea stalk and leaf separation system aims to improve the quality of the tea produced especially by separating the tea leaves and stalks at the beginning of the process. Stages that are needed to be done include designing a chopper machine that is capable of chopping tea stems and leaves to a certain size and designing stem and leaf separation system with the pneumatic principle with suction. In this study, physical, mechanical and aerodynamic characteristics of tea leaves were measured. The result showed that force to release a leaf is in the range of values between 12.24-16.17 N smaller than the need for the cutting force of the stem and leaves and the greatest difference in force is achieved at a water content between 55 and 58% bb (leaves) and 66-68% bb (stalk). The leaf terminal velocity is <3 m s-1 while the tea terminal velocity is > 9 m s-1. Tea leaf yield value is very important as a reference in testing the performance of tea and tea leaf separator machines where the average leaf yield is 77.33% and the average stem yield is 22.67%. Keywords: characteristic of tea leaves, engineering, separation of tea leaves, withering of tea leaves
PENERAPAN REKAYASA MESIN SORTIR SEBAGAI PENENTU KEMATANGAN BUAH JERUK DAN TOMAT MERAH BERBASIS IMAGE PROCESSING Ridwan Siskandar; Noer A Indrawan; Billi Rifa Kusumah; Sesar Husen Santosa; Irmansyah Irmansyah; Irzaman Irzaman
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.222-236

Abstract

The embedded systems in the industrial, especially image processing, is increasingly leading to the study of production automation systems such as fruit sorting. Post-harvest sorting system implemented by the industry is manual, so it’s not effective. The solution was to conduct research aimed at modifying post-harvest sorting tools by engineering tomato and orange sorting machines based on their color. The method uses image processing. It’s the most efficient alternative in terms of cost and complexity of hardware design, does not require many sensors, but produces an accurate output. The camera is placed on the mechanical sorting machine system, taking images to determine the sorting execution after the fruit color type are recognized. The results of the research were carried out through several tests, namely: light intensity, color image data, and organoleptics. Light intensity test showed that the position of the tool had a value of 0.78% of the outside light disturbance. Color image shows the range of ripeness values (R/G) for raw tomatoes 0<=1.04; half ripe tomatoes 1.04<=1.39; ripe tomatoes 1.39<=3.59; raw orange 0<=0.92; undercooked oranges 0.92<=0.98; and ripe oranges 0.98<=1.66. Organoleptic test from five observers had the same results as the reading on the fruit sorting tool. Keywords : engineering, fruit maturity, oranges, sorting machines, tomatoes
SISTEM FERTIGASI RAIN PIPE OTOMATIS PADA MAIN NURSERY KELAPA SAWIT (Elaeis guineensis Jacq) BERBASIS MIKROKONTROLER ARDUINO UNO Anri Kurniawan; Tri Wahyu Saputra; Anugerah Ramadan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.184-190

Abstract

This research conducted to designed, implemented, and tested an automatic rain pipe fertigation system using temperature and soil moisture sensors. The system applied to three irrigation treatments, namely manual fertilization, semi-manual fertilization, and automatic fertigation. The automatic fertigation actuator setting point is at temperature of  ≥ 31 ° C and humidity of ≤ 60% to turn on the water pump and nutrient pump then the water pump will shut down when the temperature value of 25 °C and humidity of  ≥ 80%. The results showed a significant difference in the use of irrigation water based on variance test results with an error value of 5%. The use of water from automatic fertigation is 12.770 ml or 65.9% more efficient than manual irrigation with the same growth in plant height. The height of oil palm plants in the main nursery with automatic fertigation is higher on days 7 to 12. Automatic fertilization requires a fertilizer of 1.8 tons per ha, less than manual fertilization which reaches 3 tons per ha. Keywords: fertigation, microcontroller, oil palm, sensors, soil moisture
RANCANG BANGUN SISTEM KENDALI AIR IRIGASI MENGGUNAKAN APLIKASI SMARTPHONE BERBASIS MIKROKONTROLER Muhammad Nasarudin; Guyup Mahardhian Dwi Putra; Sirajuddin Haji Abdullah; Diah Ajeng Setiawati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.248-256

Abstract

Petani selama ini melakukan penyiraman tanamannya dengan cara manual, sehingga mengurangi waktu pekerjaan yang lain. Penelitian ini bertujuan merancang sistem kendali air irigasi menggunakan aplikasi smartphone berbasis mikrokontroler serta mengetahui cara kerja dari sistem kendali air irigasi menggunakan aplikasi smartphone berbasis mikrokontroler. Alat dan bahan penelitian ini adalah mikrokontroler ESP8266-12E, smartphone, Soil moisture sensor yl-69, pompa dan tanah. Metode penelitian ini adalah metode experimental dilakukan percobaan dilapangan dengan melalui beberapa tahap penelitian yaitu persiapan, perancangan, kalibrasi alat, pemasangan instalasi irigasi, uji kerja alat, dan pengamatan. Parameter pada penelitian ini adalah kadar air tanah, nilai adc sensor, kalibrasi sensor, waktu beroperasi, debit air, dan tegangan input dan output. Dari hasil yang di peroleh adalah alat bekerja sesuai yang diperintahkan melalui smartphone. Nilai kadar air tanah semakin lama semakin berkurang dikarenakan suatu proses evaporasi, sehingga hasil nilainya dapat diketahui melalui lcd dan smartphone. Rata- rata saat pengiriman data pada hari pertama dan kedua adalah 4.77 detik dan 4.97 detik. Rata-rata debit yang keluar pada hari pertama dan kedua adalah 6,57 ml/detik dan 6,30 ml/detik. Alat berkerja berdasarkan perubaan kadar air tanah yang ditentukakn nilai setting pointnya, apabila sudah  mencapai <=70% maka secara otomatis alatnya mengirimkan kondisi kadar air tanahnya ke smarphone dan pada smartphone dilakukan tindakkan balik mengirimkan pesan untuk mengaktifkan pompa, kemudian setelah mencapai >=80% maka secara otomatis alatnya mengirimkan kondisi kadar air tanahnya ke smarphone dan pada smartphone dilakukan tindakkan balik mengirimkan pesan untuk menonaktifkan pompa

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