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All Journal Jurnal Ilmiah Rekayasa Pertanian dan Biosistem JMM (Jurnal Masyarakat Mandiri) Jurnal Agrotek UMMat Jurnal Gema Ngabdi Jurnal Abdi Insani Jurnal Ilmiah Abdi Mas TPB Unram Jurnal Pepadu
Asih Priyati
Program Studi Teknik Pertanian, Fakultas Teknologi Pangan Dan Agroindustri, Universitas Mataram
Religion Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences Other

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Karakteristik Dan Simulasi Sistem Kontrol Hidrolik Pada Proses Pengepresan Biji Jaraks Kepyar (Ricinus Communis L.) Priyati, Asih; Ansar, Ansar; Haji Abdullah, Sirajuddin
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 2 (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

This research aimed to study characteristic of hydraulic control system of castor beans pressing process. Experimental approach was conducted by using Complete Randomized Design to obtained relation between pressure’s variable and characteristics parameters of hydrolic control system and pressing process. Effet of pressure loading were investigated at 3, 5, 7, 9, and 11 kg, which replicated three times in order to obtained 15 units experiment. Characteristics parameters of hydraulic control system are pressure velocity, pressure, and pressure power. Pressing process parameters are distance of displacement, capacity of pressing process, and rendement. Result from this research showed that the hydraulic control system was able to transfered power using hydraulic oil in order to conduct pressing process. Higher loading pressure caused increasing pressure velocity, pressure, pressure power, pressing process capacity, and rendement. Whereas, lower loading pressure caused reduction on distance of displacement. Therefore, development on design is necessary to obtain optimal rendement quantity and further studies using extended pressure loading range is recommended.
Analisis Peluang Curah Hujan Untuk Penetapan Pola Dan Waktu Tanam Serta Pemilihan Jenis Komoditi Yang Sesuai Di Desa Masbagik Kecamatan Masbagik Kabupaten Lombok Timur Dainty, Iga; H. Abdullah, Sirajuddin; Priyati, Asih
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

Climatic factor, such as rainfall, greatly contributes to the availability of water for crops. Farmers set a schedule and cropping patterns based on habits, such as the period of rainy month. This method is lack precision on determining crops pattern and often increasing the risk of crop failure. This study aims to determine rainfall probability in Masbagik village on growing season of 2015-2016. Research method was descriptive analytical method. Results of this research revealed that the general rainfall pattern of the study area was still following general pattern of the previous year. Rain probability that approached natural precipitation at the field of study was 50%, with the highest limits at December by 304.5 mm and the lowest at October by 37 mm, while general rainfall probability was normal. Rainy season was predicted to start at mid-November and end at early June, while dry season occurs from early May and end in early November. Recommended scenario of the first growing season for the crop is starting at mid-November until the end of February and the second growing season start at mid-March until June 2015. Moreover, planting time for growing rice can be carried out at mid-October, while from early March growing crops is more suitable.
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 Sulnawati, Endang; H. Abdullah, Sirajuddin; Priyati, Asih
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.
Analisa Kinerja Pengelolaan Irigasi Di Daerah Irigasi Lemor, Kabupaten Lombok Timur, Nusa Tenggara Barat Jannata, Jannata; Haji Abdullah, Sirajuddin; Priyati, Asih
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
Pengaruh Kecepatan Putar Pengadukan Adonan terhadap Sifat Fisik Roti (Effect of Dough Mixing Speed on Bread Physical Characteristic) Priyati, Asih; H. Abdullah, Sirajuddin; Mahardhian Dwi Putra, Guyup
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.
Aplikasi Mikrokontroler Arduino Pada Sistem Irigasi Tetes Untuk Tanaman Sawi (Brassica Juncea) (Application of Arduino Microcontroller on Drip Irrigation for Mustard Plant (Brassica juncea) Ibnu Chaer, M. Salman; H. Abdullah, Sirajuddin; Priyati, Asih
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.
Analisis Pemanfaatan Energi Panas pada Pengeringan Bawang Merah (Allium ascalonicum L.) dengan menggunakan Alat Pengering Efek Rumah Kaca (ERK) Zamharir, Zamharir; Sukmawaty, Sukmawaty; Priyati, Asih
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%.
Characterization of Red Onion (Alium Ascalonicum.L) Drying using Greenhouse (ERK) Dryer Islami, Amalia; Murad, -; Priyati, Asih
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 (491.249 KB) | DOI: 10.29303/jrpb.v5i1.42

Abstract

Aim of this research was to determine drying rate and moisture content changes on Greenhouse (ERK) Dryer. Result was showed using graphic by analyzing drying rate characteristics of Greenhouse Dryer. Data analysis was performed using mathematical approach that solved using Microsoft Excel. Method used in this research was experimental method. Based on the results, onion drying using ERK showed decreasing rate of weight changes. Sample shrinkage was 25.7% with average moisture content 60.06% for sample weight 0.187 kg. Average humidity (RH) was lower than ambient humidity on the range of 63.4% to 83.0%. Characteristics of onion drying was the decreasing rate of moisture content of 0.17% with equation MR: y = -0,017 + 1,061, R2 is 0,985. Value of Ln MR at first day was y = -0,019x and decreasing rate of moisture content 0,19%. Whereas decreasing rate at second, third and fourth day were 0,008%, 0,11% and 0,002% respectively for 1 hour interval period. Keywords: red onion, Greenhouse effect, drying rate, dryer ABSTRAK Tujuan penelitian ini untuk mengetahui laju pengeringan, penurunan kadar air pada alat pengering ERK. Data hasil penelitian ditampilkan dalam bentuk grafik dengan menganalisis karakteristik laju pengeringan alat pengering ERK. Analisis data dilakukan dengan pendekatan matematis untuk menyelesaikan model perhitungan matematik yang diolah dengan program komputer Microsoft Excel. Metode yang digunakan pada penelitian ini adalah eksperimental dengan melakukan penelitian langsung di lapangan. Hasil penelitian menunjukkan bahwa pengeringan bawang merah menggunakan alat ERK memiliki laju pengeringan menurun dengan dilihat dari perubahan berat yang semakin berkurang. Penyusutan bahan terjadi 25,7% dengan kadar air rata-rata 60,06% dan berat bahan 0,187 kg. Kelembaban ruang pengering rata-rata 63,4%, lebih kecil dari kelembaban lingkungan sebesar 83,0%. Bawang merah memiliki karakteristik pengeringan dengan penurunan kadar air 0,17% dan MR: y = -0,017 + 1,061 dengan nilai determinasi R2 = 0,985. Ln MR pada hari pertama terlihat y = -0,019x dengan penurunan kadar air sebesar 0,19%. Sedangkan penurunan kadar air pada hari kedua mencapai 0,008%, hari ketiga 0,11%, dan hari keempat 0,002% pada interval waktu 1 jam. Kata kunci: bawang merah, ERK, laju pengeringan, pengeringan
RANCANG BANGUN REAKTOR BIOGAS TIPE PORTABLE DARI LIMBAH KOTORAN TERNAK SAPI Mahardhian Dwi Putra, Guyup; Haji Abdullah, Sirajuddin; Priyati, Asih; Ajeng Setiawati, Diah; Abdul Muttalib, Surya
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 (791.537 KB) | DOI: 10.29303/jrpb.v5i1.49

Abstract

Tujuan dari penelitian ini adalah (1) merancang reaktor biogas skala kecil dan portable dan (2) menganalis kualitas uji nyala api biogas dengan memperhatikan suhu, pH, dan tekanan. Metode yang digunakan pada penelitian ini adalah metode eksperimental dengan mengukur parameter suhu reaktor biogas, tekanan, derajat keasaman (pH) dan volume gas yang dihasilkan. Penelitian ini menggunakan bahan kotoran sapi dan air dengan perbandingan 1:2 pada kapasitas 200 liter. Pengambilan data dilakukan selama 37 hari. Hasil dari penelitian ini adalah sebuah alat biodigester skala laboratorium tipe floating drum atau terapung yang terbuat dari bahan plastik dan fiber glass dengan diamater reaktor 52 cm dan tinggi 92 cm. Volume biogas yang dihasilkan selama 37 hari adalah 2,721 m3 dengan ata-rata pembentukan gas sebesar 0,074 m3/hari dan laju pembakaran 66,44 liter/jam. Kata kunci: biogas, kotoran sapi, lama pembakaran, volume
ANALISIS HEAD LOSSES AKIBAT BELOKAN PIPA 90° (SAMBUNGAN VERTIKAL) DENGAN PEMASANGAN TUBE BUNDLE Priyati, Asih; Abdullah, Sirajuddin Haji; Hafiz, Khairun
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 7 No 1 (2019): 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 (595.624 KB) | DOI: 10.29303/jrpb.v7i1.104

Abstract

Sistem perpipaan digunakan untuk memenuhi keperluan pertanian berupa irigasi tetes maupun irigasi sprinkler. Head losses pada sistem perpipaan akibat belokan serta gesekan fluida dengan dinding pipa dapat diperkecil dengan flow conditioner berupa tube bundle. Tujuan penelitian ini adalah untuk mengetahui penurunan nilai head losses pada belokan 90o (posisi vertikal) setelah pemasangan tube bundle, mengetahui nilai penurunan tekanan akibat belokan 90o, serta menganalisa aspek debit, kecepatan aliran, dan nilai bilangan Reynold pada saluran pipa dengan belokan 90o setelah pemasangan tube bundle. Metode penelitian yang digunakan adalah metode eksperimental yang dilakukan dalam laboratorium dengan cara mengamati parameter-parameter penelitian pada 3 jenis rangkaian uji, yaitu rangkaian kontrol (tanpa tube bundle), rangkaian dengan pemasangan tube bundle 0,2 inci dan rangkaian dengan tube bundle 0,4 inci. Tube bundle yang digunakan adalah selang plastik dengan panjang 30 cm dan diikat menjadi satu sehingga berjumlah 18 selang untuk tube 0,2 inci dan 9 selang untuk tube 0,4 inci. Tube bundle ini dimasukkan ke dalam pipa uji yang berdiameter 1,25 inci dan diletakkan setiap sebelum belokan. Berdasarkan hasil penelitian didapatkan bahwa pemasangan tube bundle ukuran 0,2 inci dan 0,4 inci yang dipasang sebelum belokan 90o (posisi vertikal) akan menurunkan nilai kecepatan fluida yang diikuti dengan penurunan head losses serta akan menaikkan nilai tekanan fluida. Penurunan nilai head losses tertinggi, yaitu pada pemasangan tube bundle ukuran 0,4 inci, yakni dari 0,112 m (kontrol) menjadi 0,076 m atau sebesar 32,14%.
Co-Authors - Murad, - -, Mu'anah Abdullah, Sirajuddih Haji Agriananta Fahmi Hidayat Agus Putrawan Alfin Fajar Amalia Islami, Amalia Ansar Ansar Bambang Purwantana Cahyawan Catur Edi Margana, Cahyawan Diah Ajeng Setiawati Diah Ajeng Setiawati Diah Ajeng Setiawati Diah Ajeng Setiawati, Diah Ajeng Endang Sulnawati, Endang Fakhrul Irfan Khalil Fauzi, Fitriani Risti Gagassage Nanaluih De Side Guyup Mahardhian Dwi Putra Guyup Mahardhian Dwi Putra Guyup mahardhian Dwi Putra Guyup Mahardhian Dwi Putra, Guyup Mahardhian Dwi Hafiz, Khairun Hidayat, Agriananta Fahmi Hidayat, Agriananta Fahmi Iga Dainty, Iga Jannata -, Jannata Jannata, Jannata JOKO NUGROHO Joko Sumarsono Joko Sumarsono Joko Sumarsono Jurnal Pepadu M. Salman Ibnu Chaer, M. Salman Muhammad Nasarudin Murad - Nanang Apriandi Ni Luh Tri Dewi Lestari, Ni Luh Tri Dewi Nur Fitria Farida, Nur Fitria Sirajuddin Abdullah Sirajuddin H. Abdullah Sirajuddin H. Abdullah, Sirajuddin Sirajuddin Haji Abdullah Sirajuddin Haji Abdullah Sirajudin H Abdullah Sukmawaty Sukmawaty Surya Abdul Muttalib, Surya Surya Abdul Muttalib, Surya Abdul Zamharir, Zamharir