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Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Published by Universitas Mataram
ISSN : 23018119     EISSN : 24431354     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Terhitung sejak tahun 2014, Program Studi Teknik Pertanian Fakultas Teknolgi Pangan dan Agroindustri Universitas Mataram telah menerbitkan secara online Jurnal Ilmiah Rekayasa Pertanian dan Biosistem (JRPB) sehingga dapat diakses secara luas. Jurnal ini pada umumnya memuat hasil-hasil penelitian dari mahasiswa, peneliti, akademisi, praktisi, dan pemerhati di bidang teknik pertanian dan biosistem. JRPB berupaya menjaga eksistensi penerbitannya dan berharap jurnal ini dapat menjadi salah satu media publikasi bagi semua pihak yang meminati kajian-kajian ilmiah dalam bidang ilmu Teknologi Pertanian.
Arjuna Subject : -
Articles 177 Documents
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Analisa Kinerja Pengelolaan Irigasi Di Daerah Irigasi Lemor, Kabupaten Lombok Timur, Nusa Tenggara Barat: Performance Analysis On Irrigation Management At Lemor Irrigation Area, East Lombok, West Nusa Tenggara Jannata Jannata; Sirajuddin Haji Abdullah; Asih Priyati
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 1 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

The purpose of this study were to analyze technical aspect on irrigation asset inventory, sufficient levels of irrigation water, farmers’ satisfaction level on manager irrigation performance and the irrigation management. This research was conducted directly in the field by collecting data that further analyzed using qualitative data tables (descriptive) by simple statistical analysis. The analysis results showed that: (1) Based on technical aspect, the irrigation asset inventory at Lemor area was categorized at ‘properly well condition’ as the damage only had been found in the form of seepage; (2) The available irrigation water was not sufficient to supply the rice field on Lemor area, showed by average water discharge per two-weeks in 2012, 2013, and 2014 respectively were 72-105.575 litre/second, 72-99.485 litre/second, 72-105.115 litre/second whereas required water for irrigation were 156.09-344.097 liter/second, 133-344.097 liter/second, 110.418-338.025 litre/second respectively; (3) Total difference on correction factor in 2012 showed 0.003-0.568, which means rotation was necessary despite the sixth of two-weeks, MT II and the seventh and eight of two-weeks showed value of correlation factor higher than 0.75. As well as in 2013 and 2014, from soil preparation until growth phase of the sixth of two-weeks, the correlation factor were less than 0.75, yet at growth phase the seventh and eight of two weeks the correlation factor were above 0.75; (4) Simultaneous planting and monoculture planting were not able to meet the required irrigation water; (5) Farmers satisfaction level on the irrigation network management by service indicator, water demand condition, maintenance of irrigation channels, and the discharge channel (drainage) were 97.25, 96.25, 92.60, and 70.25 respectively. The average result showed that the irrigation management was effective; (6) The effectiveness of irrigation management in Lemor area was due to high participation of farmers either in financial process or in channel maintenance phase.Keywords: Irrigation, Asset Inventory, Irrigation Management
Kinerja Unit Pemotong Serasah Tebu Tipe Reel (Performance of Sugarcane Trash Cutting Unit with Reel Type Cutter): (Performance of Sugarcane Trash Cutting Unit with Reel Type Cutter) Wahyu K. Sugandi; Radite P. A. Setiawan; Wawan Hermawan
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 2 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

The problem of sugarcane trash after harvesting is experienced by the world's sugarcane plantations, including those in Indonesia. Large amount of sugarcane trash left in the field makes difficulties in soil management and plant maintenance. Current practice done by the sugarcane plantations was “burning before soil tillage”. However, the practice of burning cause unwanted impact to the environment and human health. Meanwhile, sugarcane trash still rich of nutrients for the land. The trash size is still long so that it should be reduced to improve composting process. The prototype was tested on 4 levels of reel rotational speeds and 4 levels of trash densities. During the tests, cutting torque and rotational speed of the reel were measured using a torque-meter and a digital tachometer. The prototype chopped up sugarcane trash of about 1.7 - 3.2 cm length. Higher trash density caused a higher cutting torque and cutting power, while higher rotational speed caused a lower cutting torque and a higher cutting power. The highest cutting torque was 4.03 kg.m, when chopped sugarcane trash of 32 kg/m3 in trash density on 400 rotational speed. Increasing the rotational speed caused a shorter trash size.
Aplikasi Mikrokontroler Arduino Pada Sistem Irigasi Tetes Untuk Tanaman Sawi (Brassica Juncea) (Application of Arduino Microcontroller on Drip Irrigation for Mustard Plant (Brassica juncea): Application of Arduino Microcontroller on Drip Irrigation System for Mustard Plant (Brassica juncea) M. Salman Ibnu Chaer; Sirajuddin H. Abdullah; Asih Priyati
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 2 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

Arduino Uno microcontroller (ATmega328) is an automatic control device which function to control, capture and store data that can be used to design electronic circuits to control on/off irrigation. In order to determine its performance, application of on/off irrigation control circuit in agriculture field need to be conducted. Mustard plant were selected for this experiment due to its sensitivity on irrigation. Purpose of this study was to applied control system based drip irrigation using Arduino microcontroller on mustard plant cultivation to compare growth and productivity of mustard plant using automatic irrigation based microcontroller and using manual irrigation, which adjusted to plants water requirement. Method used in this research was experimental method by trial on the field. Observed parameter consist of changes in moisture content, performance of on/off irrigation control system, quantity of irrigation water, plant height, number of leaves, length and width of the leaves, plants weight and crop productivity. Setting point for lower limit soil moisture content was 25.47% and the upper limit was 28.73%. During the experiment, three times watering were conducted, i.e. at 11, 16 and 20 days after planting, with total quantity of water 5,200 ml. Height of mustard plants using automatic irrigation was 21.26 cm and using manual irrigation was 22.6 cm; number of mustard plant leaf using automatic irrigation was 13 leaves and using manual irrigation was 13.4 leaves; length and width of mustard plant leaf using automatic irrigation was 17.07 cm and 8.05 cm, while using manual irrigation was 20.75 cm and 9.73 cm; mustard plant productivity using automatic irrigation was 13.54 ton/ha and using manual irrigation was 17.41 ton/ ha.
The Effect of Liquid Smoke Powder of Coconut (Cocos Nucifera Linn) Concentration and Storage Time in Smoked Milkfish Presto Quality Elya Herwati; Agustono Prarudianto; Satrijo Saloko
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 5 No 1 (2017): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.425 KB) | DOI: 10.29303/jrpb.v5i1.47

Abstract

Aimed of this study was to determine the effect of the concentration of liquid smoke powder of coconut (Cocos nucifera Linn) and storage time and their interaction in maintaining the quality of smoked milkfish presto. The chemical qualities were based on water content and crude protein content, and the organoleptic qualities were based on colour, odour, texture and flavour. The research was conducted in Randomized Complete Block with two factorial design. The first factor was the concentration of liquid smoke powder 0%, 5% and 10%; whereas the second factor was storage time 0, 2 and 4th days at room temperature; using 3 replications. The results showed that smoking process with different concentration of liquid smoke powder and different storage time affect the chemical and organoleptic qualities of milkfish presto smoke, between 2 treatments their interaction gave significant effect (p <0.05) on milkfish presto smoke chemical quality and shows the linear pattern of trends (55.03% – 62.91% water content and 28.66% – 34.00% crude protein content). Based on organoleptic tests, the concentrations of 5% liquid smoke powder and 2 days storage time gave the best combination that can maintain the quality of milkfish presto smoke.Keywords: milkfish presto smoke, liquid smoke powder, storage time ABSTRAKTujuan penelitian ini adalah untuk mengetahui pengaruh konsentrasi bubuk asap cair tempurung kelapa (Cocos nucifera linn) dan lama penyimpanan beserta interaksinya dalam mempertahankan kualitas bandeng presto asap. Kualitas kimia berdasarkan pada kadar air dan kadar protein kasar, sedangkan kualitas organoleptik berdasarkan pada warna, aroma, tekstur dan rasa. Rancangan percobaan menggunakan Rancangan Acak Kelompok dengan percobaan faktorial terdiri atas dua faktor. Faktor pertama adalah konsentrasi bubuk asap cair 0%, 5% dan 10%, sedangkan faktor kedua adalah lama penyimpanan hari ke-0, ke-2 dan ke-4 pada suhu ruang. Masing-masing perlakuan diulang sebanyak tiga kali. Hasil penelitian menunjukkan bahwa proses pengasapan dengan konsentrasi bubuk asap cair yang berbeda dan lama penyimpanan yang berbeda dapat mempengaruhi kualitas kimia dan organoleptik bandeng presto asap. Ditunjukkan juga bahwa hasil interaksi keduanya memiliki pengaruh nyata (p<0,05) terhadap kualitas kimia bandeng presto asap dan menunjukkan pola kecendrungan dengan pola linier (kadar air 55,03% – 62,91% dan kadar protein kasar 28,66% – 34,00%). Berdasarkan uji organoleptik, konsentrasi bubuk asap cair 5% dan lama penyimpanan 2 hari adalah kombinasi terbaik yang dapat mempertahankan kualitas bandeng presto asap. Kata kunci: bandeng presto asap, bubuk asap cair, lama penyimpanan
Pengaruh Kecepatan Putar Pengadukan Adonan terhadap Sifat Fisik Roti (Effect of Dough Mixing Speed on Bread Physical Characteristic): Effect of Dough Mixing Speed on Bread Physical Characteristic Asih Priyati; Sirajuddin H. Abdullah; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 1 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

This research aimed to study effect of dough mixing speed on bread physical characteristic. Dough mixing is an important process on bread production. At this process, the cohesive elastic characteristic will occur from gluten that attach water molecule. Method used in this research was experimental approach using Completely Randomized Design with variation of mixer speed and determined correlation between physical characteristic of the expansion bread after fermentation and after baked in the oven, bread mass, bread pore, and bread water content. Mixer speed variation of 100, 150, and 200 rpm using three replications had been conducted. Result showed that mixing process using higher speed produced bigger bread mass, larger bread pore, and higher water content.
RANCANG BANGUN MESIN PENCAMPUR KEDELAI DENGAN KAPANG (RAGI TEMPE) PADA INDUSTRI RUMAHAN DI DAERAH KOTA MATARAM Surya Abdul Muttalib; Wiwin Apriyanditra; Irma Yulianti; Rizki Hasmi; M Umas Hartono
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 5 No 1 (2017): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (231.664 KB) | DOI: 10.29303/jrpb.v5i1.43

Abstract

Kekalik Jaya adalah salah satu sentra produksi bahan olahan berupa tempe di wilayah Mataram. Pada pengolahannya secara umum masih menggunakan metode tradisional.Proses pembuatan tempe yang memegang bagian penting penentu mutu tempe adalah proses peragian tempe dengan kapang.Kualitas tempe dinilai berdasarkan warna tempe, tingkat kepadatan tempe, sebaran kapang yang tumbuh menyelimuti tempe.Sehingga untuk menjaga nilai mutu tersebut, pencampuran ragi dengan kedelai perlu pengerjaan yang optimal guna menjaga kualitas tempe. Untuk tetap mempertahankan mutu tempe, para produsen perlu untuk diberikan pengenalan teknologi sederhana dalam proses produksi tempe berupa mesin pencampur. Selain usaha tempe, masyarakat Mataram juga menekuni usaha pengrajin besi, yang berada didaerah sandubaya Mataram. Dengan adanya desain alat ini dapat membantu para pengrajin semakin memiliki hubungan yang erat dengan pengusaha tempe sehingga perekonomian Mataram semakin meningkat antar sektor industrinya. Desain mesin ini menggunakan motor sebagai sumber penggerak, sehingga tabung silinder berputar. Tenaga dari motor ditransmisikan ke silinder oleh vanbelt. Silinder berputar dengan kecepatan tertentu, dengan sirip dalam yang mampu membolak-balikkan bahan hingga tercampur rata seiring dengan berputarnya silinder. Kata kunci: mesin pencampur, rancang bangun, tempe
Pengeringan Biji Kemiri pada Alat Pengering Tipe Batch Model Tungku Berbasis Bahan Bakar Cangkang Kemiri (Drying of pecan seed using Batch Type dryer with pecan sheel fuel): Drying of Pecan Seed using Batch Type dryer with Pecan Sheel Fuel Murad Murad; Rahmat Sabani; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 1 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

Generally, this research aimed to study drying characteristic of pecan seed on a Batch type (stove) dryer using pecan shell as fuel. Specifically, this research aimed to determine moisture content reduction, temperature change, drying rate, mass transfer rate, air dryer flow rate, energy requirement, drying efficiency, and drying capacity. This research used experimental method in order to determine drying characteristic of pecan on thin layer method using oven, which was conducted in laboratorium by temperature varied of 40oC, 50oC, 60oC, 70oC, dan 80oC. Thick layer method was conducted by trial mathematical model, i.e. collected data from drying stage on batch stove dryer then analyzed using software based on mathematical model, actual data were also collected from on field experiments. Measurement of pecan geometric characteristic also had been conducted. Result showed that pecan had sphericity number of 0.79. Characteristic curve of thin layer drying obtained from analytical result showed the drying rate was decreasing and correlation between ln MR (%db) with t (hours) on drying temperature of 40 oC to 80 oC showed decreasing moisture content and drying rate towards drying time. General equation for moisture content ratio, MR = exp (-0,0141.T – 0,2583)*t. Graphic of correlation between fuel (kg) and moisture content equilibrium (%) showed decreasing moisture content equilibrium at every fuel addition.
Analisis Pemanfaatan Energi Panas pada Pengeringan Bawang Merah (Allium ascalonicum L.) dengan menggunakan Alat Pengering Efek Rumah Kaca (ERK): Analysis of Heat Energy Utilizationin Onion (Allium ascalonicum, L.)DryingusingGreenHouses Gasses(GHG)Drye Zamharir Zamharir; Sukmawaty Sukmawaty; Asih Priyati
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 2 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

Onion (Allium ascalonicum, L.) is one horticulture commodity that is widely cultivated by Indonesian society. There are many benefits that can be drawn from the onion and high economic value of these vegetables make farmers in various regions interested to cultivate them to earn huge profits. Purpose of this study was to analyze the needs of heat energy in the drying process of onions. Method used in this research was experimental methods by using Greenhouse Gasses (GHG) dryer for drying onion. This dryer utilizes solar energy as the only source of heat to raise temperature of the material in the drying process. On the first experimental stage (without materials) the highest temperature inside the dryer was 52°C and the lowest was 27°C, while the maximum temperature in the environment was 34°C and the minimum was 25°C. The average temperature difference between the dryer and the environment was 14°C with average solar radiation of 445 W/m². On the experiment using materials, the average temperature of the dryer during 4 days, the lowest was 37.75°C and the highest was 51.75° C; whereas the lowest and the highest environment temperature respectively was 25.8°C and 37.0°C. The average light intensity was 545 W/m², with average total amount of solar energy received was 2,227,262.7 kJ and the average drying efficiency was 39.9%.
Analisis Teknis dan Kajian Ergonomika berdasarkan Antropometri pada Penggunaan Traktor Tangan untuk Lahan Sawah (Anthropometry based Technical Analysis and Ergonomic Studies on Utilization of Hand Tractor for Farm Field: Anthropometry based Technical Analysis and Ergonomic Studies on Utilization of Hand Tractor for Farm Field Endang Sulnawati; Sirajuddin H. Abdullah; Asih Priyati
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 2 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

Purpose of this research was to analyzed technical utilization of hand tractors for farm field, analyze suitability of body dimension anthropometry data with dimension of hand tractors Yanmar Bromo Model V2 TF 85 MLY, and determine working load level by measuring operator’s pulse rate when using tractors for land preparation. This research conducted at Terara village, Terara district in East Lombok using field experimental method. Examined parameters, regard to technical test, were theoretical field capacity, effectivity and efficiency. Additional examined parameters based on ergonomic were anthropometry analysis and measurement of operator’s pulse rate. Results showed that the theoretical field capacity was 0.065 ha/hour and the effective field capacity was 0.025 ha/hour. Land processing efficiency was 38.38%; time lost during processing greatly affect the efficiency, where some of them caused by overlapping, slip, time for turning, and congestion (which share the greatest percentage of 30.35%). Results from anthropometry data measurement showed that the ergonomic dimensions for the tool are < 68.57 cm of gear level position from end of the handle, <95.27 cm of handle height position, <39.05 cm distance between grip, >8.82 cm handle length, and <9 cm distance of left and right turn lever. Tool’s dimension that already ergonomic, based on the results of anthropometry data measurement was position of gear lever from end of the handle with value of 68.57 cm and handle length with value of 8.82 cm. Operator’s working load level when using Yanmar Model TF 85 MLY Bromo V2 Tractor could be classified as moderate, with operator’s pulse rate of 100-125 sec/mnt.
Modification and Test Performance of Rack Type Hybrid (Solar-Biomass) Dryer Martiani, Erni; Murad, -; Putra, Guyup Mahardhian Dwi
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 5 No 1 (2017): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.627 KB) | DOI: 10.29303/jrpb.v5i1.45

Abstract

This study aimed to modify biomass furnaces source of heat energy from the combustion of biomass, study thermal energy generated from combination of solar and biomass energy, and determine efficiency of furnaces and efficiency of total system of a rack type hybrid (solar-biomass) dryer. Method used in this research was experimental method. Used fuel was coconut shell charcoal and used tools include iron plate, blower, pipe, grinding and welding tools, thermometer, anemometer, lux meter, data logger and analytical balance. Observed parameters were temperature, air humidity, sun radiation, velocity and flow rate of hot air towards the drying chamber, drying period, energy loss and energy produced inside the furnace. Modification made by adding drawer shaped biomass furnace with 0.65 m length, 0.65 m wide and 0.25 m height. The furnace was equipped with a chimney and blower. Results from the test performance showed that this tool yield total heat loss of 18,173.15 KJ at the upright furnace wall. Whereas heat loss at furnace floor was 4380.899 KJ. Energy consumption was 151,602.064 for solar energy and 48,399.4 KJ for biomass energy, with total drying energy generated by solar energy and biomass i.e. 200,001 KJ. Efficiency value of the drying system was 19% with 30% furnace efficiency. Keywords: Hybrid dryer, heat loss, biomass furnaces ABSTRAK Penelitian ini bertujuan untuk memodifikasi tungku biomassa sebagai tempat sumber energi panas dari pembakaran biomassa, mempelajari energi panas yang dihasilkan oleh kombinasi energi surya dan energi biomassa, dan mengetahui efisiensi tungku dan efisiensi total sistem pada alat pengering hybrid (surya-biomassa) tipe rak. Metode yang digunakan dalam penelitian ini yaitu metode eksperimental. Bahan bakar yang digunakan yaitu arang tempurung kelapa dan alat yang digunakan antara lain plat besi, blower, pipa, gerinda, las, thermometer, anemometer, lux meter, data logger, dan timbangan analitik. Parameter yang diamati terdiri dari suhu, kelembaban udara, radiasi matahari, kecepatan aliran udara panas menuju ruang pengering, debit aliran udara menuju ruang pengering, lama waktu pengeringan, kehilangan energi pada tungku dan energi yang dihasilkan. Modifikasi yang dilakukan adalah menambahkan tungku biomassa yang berbentuk seperti laci dengan ukuran panjang 0,65 m, lebar 0,65 m dan tinggi 0,25 m. Tungku ini dilengkapi dengan cerobong asap dan blower. Hasil pengujian alat ini diperoleh total kehilangan panas pada dinding tegak tungku 18.173,15 KJ, sedangkan kehilangan panas pada lantai tungku 4.380,899 KJ. Konsumsi penggunaan energi, yaitu energi surya 151.602,064 KJ dan energi biomassa 48.399,4 KJ dengan total energi pengeringan yang dihasilkan oleh energi surya dan biomassa sebesar 200.001 KJ. Nilai efisiensi sistem pengeringan yang dihasilkan yaitu 19% dengan efisiensi tungku 30%. Kata kunci: alat pengering Hybrid, kehilangan panas, tungku biomassa

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