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Rona Teknik Pertanian
Published by Universitas Syiah Kuala
ISSN : 20852614     EISSN : 25282654     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Engineering
JRTP is the official journal from the Department of Agricultural Engineering, Faculty of Agriculture, Syiah Kuala University (Unsyiah), Banda Aceh-Indonesia. It covers and devotes a complete and interdisciplinary wide range of research and review in engineering applications for agriculture and biosystems: agricultural machinery, soil and water engineering, tillage, precision farming, post-harvest technology, agricultural instrumentation, sensors, bio-robotics, systems automation, processing of agricultural products and foods, quality evaluation and food safety, audit energy, waste treatment and management, environmental control, energy utilization agricultural systems engineering, bio-informatics, computer simulation, farm work systems, mechanized farming and ergonomi.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 207 Documents
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Rancang Bangun dan Uji Kinerja Mesin Pembersihan dan Pengayakan Tipe-Grizzly Untuk Beras Aprilia Dila Wardiningrum; Agus Dharmawan; Soni Sisbudi Harsono; Siswoyo Soekarno
Rona Teknik Pertanian Vol 14, No 2 (2021): Volume 14, No.2, Oktober 2021
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v14i2.20741

Abstract

Abstrak. Penelitian ini bertujuan untuk mengembangkan mesin pembersih dan pengayak tipe grizzly untuk beras sekaligus menguji kinerja mesin. Penelitian terdiri atas perancangan, perakitan, dan evaluasi kinerja mesin. Mesin yang dikembangkan memiliki 6 (enam) komponen utama, yaitu sumber dan transmisi tenaga putar, lubang pemasukan, unit pembersih beras, unit pengayak beras, lubang pengeluaran, dan kerangka mesin. Penelitian dilakukan menggunakan 3 (tiga) percobaan putaran, L (lambat), S (sedang), dan C (cepat) untuk mendapatkan data dari parameter pengukuran seperti kapasitas kerja, kecepatan putar mesin, laju isapan udara pada unit pembersih, slip putaran puli, dan persentase kehilangan bahan. Pada percobaan putaran L-S-C, yaitu 1654, 1817, dan 1979 rpm, menghasilkan laju isapan udara adalah 7,04, 7,79, dan 8,50 m/s. Slip putaran puli terjadi pada pulli 4 dengan nilai 3,27% tanpa sampal dan 1,70% dengan sampel; puli ini bertugas untuk menggetarkan ayakan grizzly 10-mesh. Kapasitas kerja pada 3 percobaan putaran (L-S-C) berturut-turut adalah 78,5, 81,6 dan 146,7 kg/jam. Pemisahan optimal dedak terjadi para percobaan putaran C sendangkan pemisahan menir terjadi pada percobaan L. Persentase kehilangan bahan tertinggi terjadi selama terjadi penurunan kecepatan putar yang mengakibatkan penurunan efektivitas kerja mesin.Design and Performance Test of Cleaning and Gryzzly-Type Sieving Machine for Rice Abstract. This research aimed to develop and a rice cleaning and grizzly-type sieving machine which also evaluates its performance. It consisted of designing, assembling, and performance evaluating of the machine. The desired machine was developed in six main components, i.e., power source, hopper, rice cleaner, rice siever, outlets, and machine frame. The research used three rotational speed treatments (Slow-Middle-Fast or L-S-C rotations) for data collections, whereas the parameters of performance testing consisted of work capacity, engine rotation speed, airflow rate, pulley rotational slip, and grain loss percentage. Engine rotation speeds at L-S-C treatments are 1654, 1817, and 1979 rpm and resulted in 7.04, 7.79, and 8.50 m/s, respectively, for airflow rates produced by the suction from a blower. The most significant rotational slip is occurred at Pulley-4 resulted in 3.27% (operating without samples) and 1.70% (operating with samples); this pulley transmitted rotational power to vibrate the 10-mesh grizzly sieve. The work capacities at L-S-C rotational treatments were 78.5, 81.6, and 146.7 kg/h, respectively. The optimal separation of brans was at C-rotational treatment, while the optimal separation of groats was at L-rotational treatment. The high percentage of grain loss occurred along with a reduction in speed that made the machine work ineffectively.
Evaluasi Pengaruh Volume Minyak Simplah Terhadap Kualitasnya Pada Pemanasan Menggunakan Energi Mikrowave Rita Khathir; Mustaqimah Mustaqimah; Raida Agustina; Sri Hartuti; Azmil Azmil
Rona Teknik Pertanian Vol 13, No 1 (2020): Volume 13, No. 1, April 2020
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v13i1.15851

Abstract

Abstract. Minyak simplah adalah produk lokal Aceh dari proses fermentasi kelapa yang mempunyai manfaat seperti minyak kelapa murni (VCO). Tujuan penelitian ini adalah untuk mengetahui pengaruh pemanasan energi mikrowave terhadap kualitas minyak simplah berdasarkan variasi volume minyak. Metode yang dilakukan adalah memanaskan minyak simplah dalam mikrowave oven frekuensi 2,450 MHz selama 60 detik dengan energi 800W pada variasi volume yakni 20, 40,dan 60 ml, dengan 3x ulangan. Pengamatan dilakukan terhadap suhu, kadar air, derajat keasaman, asam lemak bebas, bilangan peroksida dan warna. Hasil penelitian menunjukkan bahwa perlakuan variasi volume minyak pada pemanasan mikrowave selama 60 detik meningkatkan suhu minyak secara signifikan, namun perlakuan tersebut tidak memberikan pengaruh nyata terhadap kadar air, pH, asam lemak bebas dan bilangan peroksida. Kualitas minyak simplah sebelum dan setelah pemanasan dengan mikrowave belum memenuhi standar sehingga penelitian lanjutan sangat diperlukan untuk mengkaji kemungkinan peningkatan kualitas minyak menggunakan energi mikrowave dengan memperlama waktu pemanasan.The Influence of Oil Simplah Volume to Its Quality under Microwave HeatingAbstract. The simplah oil, contained a lot of benefits as virgin coconut oil (VCO), is traditionally produced during fermentation of coconut by Acehnese. The purpose of this study is to determine the influence of microwave heating on the simplah oil quality based on the variation of its volume. The study was conducted by heating the simplah oil by using a microwave oven at frequency of 2.450MHz for 60s at power level 800W under the variation of oil volume i.e. 20, 40, and 60 ml in three replications. The parameters observed were temperature, water content, degree of acidity, free fatty acids, peroxide number and color. Results showed that the variation of oil volume after microwave heating had significant effect on temperature, but did not significantly influence the rest parameters. Since the quality of simplah oil before and after treatment did not meet the standard yet, it is very important to conduct the further study by extending the exposure time of the oil under microwave heating.  
Kajian Stok Karbon Organik Dan Nitrogen Total Tanah Pada Beberapa Jenis Tanaman Penutup Tanah Di Kebun Kelapa Sawit PT. Perkebunan Nusantara I Kota Langsa TM Alfarizi; Munawar Khalil; Yusnizar Yusnizar
Rona Teknik Pertanian Vol 16, No 2 (2023): Volume No. 16, No. 2, Oktober 2023
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v16i2.34349

Abstract

Abstrak. Tanaman kelapa sawit merupakan tanaman perkebunan penting dalam sektor pertanian. Masalah utama pertanian di Indonesia saat ini adalah degradasi kesuburan lahan pertanian disebabkan menurunnya kandungan bahan organik tanah. Upaya peningkatan produksi kelapa sawit dilakukan dengan berbagai teknik diantaranya penanaman tanaman penutup tanah (TPT). Tujuan penelitian ini adalah mengkaji stok karbon organik dan nitrogen total tanah pada lahan yang ditanami beberapa jenis tanaman penutup tanah di Kebun Kelapa Sawit PT. Perkebunan Nusantara I Kota Langsa. Penelitian ini menggunakan metode deskriptif dengan pengamatan lapangan dan analisis laboratorium. Lokasi penelitian adalah di Gampong Pondok Kelapa Kecamatan Langsa Baro Kota Langsa pada koordinat 04o29’16” LU-97o56’38” BT. Hasil penelitian menunjukkan cadangan karbon pada lahan perkebunan kelapa sawit dengan tanaman penutup tanah Asystasia gangetica dan Mucuna bracteate lebih tinggi dibandingkan cadangan karbon pada lahan perkebunan kelapa sawit tanpa tanaman penutup tanah. Jumlah nitrogen tanah pada lahan perkebunan kelapa sawit dengan tanaman penutup tanah Asystasia gangetica dan Mucuna bracteate lebih tinggi daripada jumlah nitrogen tanah pada lahan perkebunan kelapa sawit tanpa tanaman penutup tanah. Jenis tanaman penutup tanah Asystasia gangetica menghasilkan nilai karbon organik dan nitrogen total tanah lebih tinggi. Nilai karbon organik dan total nitrogen tanah paling rendah terdapat pada lahan tanpa tanaman penutup tanah. Study of Soil Organic Carbon and Amount Nitrogen Stocks at Several Types of  Cover Crop Plants in Oil Palm Plantations PT.Perkebunan Nusantara I Kota LangsaAbstract. Oil palm is an important plantation crop in the agricultural sector. The main problem of agriculture in Indonesia today is the degradation of the fertility of agricultural land. Efforts to increase oil palm production are carried out using various techniques by planting ground cover plants (TPT). The purpose of this study was to examine organic carbon stock and total nitrogen in soils planted with several types of cover crops in the oil palm plantations of PT. Nusantara Plantation I, Langsa City. This study used a descriptive method with field observations and laboratory analysis. The location of this study is in Gampong Pondok Kelapa, Langsa Baro District, Langsa City at coordinates 04o29’16"N-97o56’38"E. The results of this study indicate that the value of organic carbon stock and nitrogen total in land with cover crop Asystasia gangetica and Mucuna bracteate is higher than that of in land without cover crops. Asystasia gangetica provides a higher value of organic carbon stock and total nitrogen than Mocuna bracteate. The value of organic carbon stock and total nitrogen is lowest in land without the cover crops.   
Fast And Simultaneous Prediction Of Agricultural Soil Nutrients Content Using Infrared Spectroscopy Devianti Devianti; Zulfahrizal Zulfahrizal; Sufardi Sufardi; Agus Arip Munawar
Rona Teknik Pertanian Vol 12, No 1 (2019): Volume 12, No. 1, April 2019
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v12i1.11656

Abstract

Abstract. The functions soil depends on the balances of its structure, nutrients composition as well as other chemical and physical properties. Conventional methods, used to determine nutrients content on agricultural soil were time consuming, complicated sample processing and destructive in nature. Near infrared reflectance spectroscopy (NIRS) has become one of the most promising and used non-destructive methods of analysis in many field areas including in soil science. The main aim of this present study is to apply NIRS in predicting nutrients content of soils in form of total nitrogen (N). Transmittance spectra data were obtained from a total of 18 soil samples from 8 different sites followed by N measurement using standard laboratory method. Principal component regression (PCR) with full cross validation were used to develop and validate N prediction models. The results showed that N content can be predicted very well even with raw spectra data with coefficient correlation (r) and residual predictive deviation index (RPD) were 0.95 and 3.35 respectively. Furthermore, spectra correction clearly enhances and improve prediction accuracy with r = 0.96 and RPD = 3.51. It may conclude that NIRS can be used as fast and simultaneous method in determining nutrient content of agricultural soils.
Soil Conservation Instructions Against Environmental Damage Due to Erosion Rates in the Krueng Seulimeum Sub-watershed Siswanda Siswanda; Helmi Helmi; Muhammad Faisal
Rona Teknik Pertanian Vol 16, No 1 (2023): Volume No. 16, No. 1, April 2023
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v16i1.24296

Abstract

AbstrakTanah merupakan sumber daya alam yang penting bagi ekosistem karena menyediakan habitat bagi manusia, hewan, dan tumbuhan. Erosi tanah sangat dipengaruhi oleh kondisi geologi suatu wilayah, seperti kemiringan dan panjang tanah, jenis batuan dan sedimen, permeabilitas tanah, vegetasi, iklim, dan aktivitas makhluk hidup. Penelitian ini bertujuan untuk mengetahui besarnya erosi dan menganalisis tingkat bahaya erosi yang terjadi pada Daerah Aliran Sungai (DAS) Krueng Seulimeum dan Krueng Aceh, serta mengevaluasi dampak kerusakannya terhadap lingkungan. Penelitian dilakukan menggunakan metode survei dengan cara observasi langsung terhadap lokasi penelitian dan melakukan analisis tanah. Nilai erosi dihitung menggunakan persamaan USLE (Universal Soil Loss Equation). Pengaruh faktor panjang dan kemiringan lereng, program pengelolaan dan metode tindakan konservasinya dianalisa. Tahapan penelitian meliputi: (1) pengumpulan data sekunder dan peta lokasi, (2) peninjauan lokasi penelitian dan (3) analisis tanah dan evaluasi data. Berdasarkan hasil jenis tanah,  kemiringan, dan penggunaan lahan menunjukkan bahwa dilokasi penelitian terdapat sembilan Satuan Peta Lahan (SPL) dengan total luas areal 26.497,07 ha. Erosi potensial terbesar terdapat pada SPL 9 yaitu 2.857,72 ton ha-1 th-1. Sedangkan erosi aktual terbesar terdapat pada SPL 8 yaitu 254,06 ton ha-1 th-1 . Terdapat tiga tingkat bahaya erosi yaitu rendah, sedang dan sangat tinggi. Tingkat bahaya erosi rendah pada SPL 1, 2, 4, 5, 6, 7, 8 dan 9 ; tingkat bahaya erosi sedang pada SPL 1, 2, 3 dan 6. SPL 2 menunjukkan tingkat  indeks bahaya erosi yang sangat tinggi. Arahan konservasi tanah yang disarankan adalah reboisasi terhadap kawasan lindung pada SPL 4 dan 8. Metode konservasi dapat diterapkan pada lahan pertanian SPL 1,2,3,5,6,7, dan 9.AbstractSoil is an important natural resource for ecosystems because it provides habitat for humans, animals, and plants. Soil erosion is strongly influenced by a region's geological conditions, such as the slope and length of the land, the type of rock and sediment, the permeability of the land, vegetation, climate, and the activities of living things. The aims of this research were to assess the degree of erosion risk in the Krueng Seulimuem Sub-watershed and the Krueng Aceh Watershed, as well as the environmental consequences of the damage. Direct observations at the research site and soil sample analysis were used to conduct the investigation. The erosion was estimated using the USLE (Universal Soil Loss Equation). The effects of slope length and steepness factors, program management aspects, and conservation methods, as well as a variety of other research criteria, were assessed. It was carried out in three stages: (1) secondary data processing and map preparation; (2) analysis of the research site; and (3) soil analysis and data evaluation. According to the results of the soil type, slope, and land use overlay map, the research site had nine land mapping units (LMU) covering a total area of 26,497.07 hectares. The largest potential erosion was at LMU 9, with 2,857.72 tons ha-1 yr-1, while the largest actual erosion occurred at LMU 8, with 254.06 tons ha-1 yr-1. There were three degrees of erosion risk: low, moderate, and very high. The low level was present in LMU 1, 2, 4, 5, 6, 7, 8, and 9. The moderate level was present in LMU 1, 2, 3, and 6. LMU 2 was present to the very high-level index. The recommended strategy for soil conservation was reforestation of protected areas at LMU 4 and 8. Conservation methods may be used in agricultural fields at LMU 1, 2, 3, 5, 6, 7, and 9
Pemanfaatan Ekstrak Buah Karamunting (Rhodomyrtus tomentosa) Sebagai Pewarna Alami dan Sumber Antioksidan Pada Kue Mangkok Hotman Manurung; Rosnawyta Simanjuntak; Romauli N D M
Rona Teknik Pertanian Vol 14, No 1 (2021): Volume 14, No.1, April 2021
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v14i1.18537

Abstract

Abstrak. Kue mangkok yang beredar di pasar menggunakan pewarna sintetik dan tidak mengandung senyawa aktiv yang berfungsi sebagai antioksidan. Karamunting mempunyai warna ungu yang menarik dan kaya antioksidan. Penelitian dilakukan untuk memanfaatkan ekstrak buah karamunting sebagai pewarna alami, sumber antioksidan dan pengaruhnya terhadap karakteristik mutu kue mangkok. Penelitian dilakukan dengan metode ekperimental dengan perlakuan: Konsentrasi ekstrak buah karamunting:  0; 2,5; 5,0; 7,5; dan 10,0% (b/b).  Parameter penelitian: daya antioksidan (IC50) ppm, volume spesifik (mL/g), total padatan terlarut (oBrix), derajat putih (%) dan uji kesukaan terhadap rasa dan warna. Penelitian dilakukan dengan 3 ulangan. Hasil penelitian menunjukkan peningkatan jumlah ekstrak buah karamunting  dapat menurunkan IC50 secara nyata dari 83,935ppm menjadi 66,10ppm. Kesukaan terhadap warna meningkat dari 2,98 (tidak suka) menjadi 4,88 (mendekati sangat suka), sedangkan derajat putih menurun dari 62,5% menjadi 52,34%. Volume spesifik, total padatan terlarut dan kesukaan rasa tidak terpengaruh. Ekstrak buah karamunting dapat dimanfaatkan sebagai sumber antioksidan dan meningkatkan kesukaan warna kue mangkok.Utilization of Karamunting Fruit Extract (Rhodomyrtus tomentosa) as a Natural Colorant and Source of Antioxidants in CupcakesAbstract. In the market, many food products such as cupcakes used synthetic food colors and do not obtained active compounds that function as antioxidants. Karamunting fruit has an attractive natural purple color and rich in antioxidants. The objectives of this research were to utilize the extract of karamunting fruit as a natural food colorant which possess potent antioxidant and to determine the effect of karamunting fruit on the quality characteristics of cupcakes. This research was carried out using five concentration of karamunting fruit extract (0, 2.5, 5.0, 7.5 and 10.0%). Cupcakes samples were analysed for the IC50 value of antioxidant activity, specific volume (mL/g), total soluble solids (oBrix), whiteness value (%) and consumer preference test (taste and color). All experiments were carried out in triplicate. Karamunting fruit extract was significantly decreased  the IC50 value from 83.935 ppm to 66.10ppm. For cupcake’s color of consumer evaluation, the score increased from 2.98 (dislike a little) to 4.88 (near like a lot), while whiteness value decreased from 62.5% to 52.34%. Generally, specific volume, total soluble solids, and taste of cupcakes were not significantly affected by Karamunting fruit extract. Karamunting fruit extract can be used as a source of antioxidants and increase the cupcake’s color of consumer’s acceptability.
Pond Productivity and Water Quality in Various Vaname Shrimp (Litopenaeus vannamei) Farming Systems at BPBAP Ujong Batee Aceh Besar Muhammad Muhammad; Muyassir Muyassir; Muhammadar Muhammadar
Rona Teknik Pertanian Vol 15, No 2 (2022): Volume No. 15, No. 2, Oktober 2022
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v15i2.27566

Abstract

Abstract. Traditional shrimp farming systems are generally susceptible to disease outbreaks, resulting in low productivity. However, the application of farming technology can reduce these risks. This study aims to calculate the production and examine pond water quality in vannamei shrimp culture by applying semi-intensive, intensive, and super-intensive farming systems through direct measurements and field observations. The results showed that the highest productivity was produced in super-intensive ponds at 5.4 kg/m2, in intensive systems at 2,325 kg/m2, and in semi-intensive farming systems at 0.575 kg/m2. The semi-intensive salinity ranged from 30.8 ppt to 35.1 ppt, the super-intensive salinity ranged from 29.2 to 31.9 ppt, and the semi-intensive salinity ranged from 30.9 to 34.2 ppt. The temperature ranges from 26.7 to 28.5°C for semi-intensive culture, 25.9 to 28°C for super-intensive farming, and 27.8 to 29.3°C for semi-intensive farming. The pH in the semi-intensive farming system is 7.9-8.3, the super-intensive pH is 7.7-8.6, and the semi-intensive system is at pH 7.7-8.2. Dissolved oxygen levels range from 4.0 to 5.9 ppm in intensive shrimp farming, 3.0 to 3.6 ppm in super-intensive shrimp farming, and 3.2 to 4.0 ppm in semi-intensive shrimp farming. Therefore, it can be concluded that the higher the farming technology applied, the higher the ponds' productivity. Meanwhile, differences in farming systems do not impact changes in water quality.Abstrak. Budidaya udang sistem tradisional mudah terjadi penyebaran penyakit dan produksinya rendah. Penerapan teknologi budidaya dapat mengurangi resiko. Penelitian ini bertujuan untuk mengukur produksi dan menganalisa kualitas air tambak pada budidaya udang vaname dengan menerapkan metode budidaya semi intensif, intensif dan super intensif melalui pengukuran secara langsung dan observasi di lapangan. Hasil penelitian menunjukkan produktivitas tertinggi dihasilkan pada kolam super intensif sebesar 5,4 kg/m2, pada metode intensif  2,325 kg/m2 dan pada metode budidaya semi intensif 0,575 kg/m2. Parameter kualitas air pada semi intensif salinitas berada pada level 30,8 ppt - 35,1‰, super intensif salinitas 29,2-31,9‰ dan pada semi intensif salinitas 30,9-34,2‰. Suhu pada metode budidaya semi intensif berada pada level 26,7-28,5°C.  pada  super intensif 25,9-28°C dan  pada metode semi intensif 27,8-29,3°C. pH pada metode budidaya semi intensif berada pada level 7,9-8,3 super intensif pH 7,7-8,6 dan metode semi intensif pH 7,7-8,2. Oksigen terlarut pada metode budidaya udang intensif 4.0-5,9 ppm, pada super intensif oksigen terlarut 3.0-3,6 ppm dan semi intensif 3,2-4,0 ppm. Dapat disimpulkan semakin tinggi teknologi budidaya yang diterapkan akan berdampak pada semakin tingginya produktivitas tambak yang dihasilkan. Perbedaan metode budidaya tidak berdampak pada perubahan kualitas air atau ketiga metode budidaya tersebut berdampak yang sama terhadap kualitas air.
Evaluasi Kebutuhan Air Netto untuk Padi Merah (Oryza nivara) pada Fase Vegetatif dan Generatif di Kecamatan Ingin Jaya Kabupaten Aceh Besar Hasrul Basri; Syamaun A. Ali; Najla Anwar Fuadi
Rona Teknik Pertanian Vol 6, No 2 (2013): Volume 6, No. 2, Oktober 2013
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v6i2.20427

Abstract

Abstrak. Penelitian deskriptif ini bertujuan untuk mengetahui kebutuhan air netto untuk padi merah pada fase vegetatif dan generatif di Kecamatan Ingin Jaya Kabupaten Aceh Besar. Penelitian ini dilaksanakan di Petak Tersier CG. 1. Kr Daerah Irigasi Krueng Aceh sejak Februari 2013 sampai Mei 2013. Tahap penelitian yang dilakukan yaitu pegumpulan data sekunder berupa peta jaringan irigasi, pola tanam daerah irigasi, sistem pemberian air irigasi dan data curah hujan. Tahap kedua yaitu pengumpulan data primer berupa pengukuran laju perkolasi, evapotranspirasi tanaman, perhitungan curah hujan efektif dan perhitungan kebutuhan air netto di lapangan. Hasil penelitian menunjukkan bahwa, pada petak tersier yang diamati memiliki tekstur tanah lempung dan lempung berliat. Rata-rata perkolasi yang terjadi setiap harinya yaitu antara 2,36 mm/hari sampai 2,69 mm/hari. Rata-rata nilai evapotranspirasi tanaman padi merah pada fase vegetatif yaitu sebesar 1,51 mm/hari lebih tinggi dibandingkan dengan evapotranspirasi tanaman pada fase generatif yaitu sebesar 1,39 mm/hari dan pergantian lapisan air sebesar 3,3 mm/hari. Kebutuhan air netto lapangan padi merah antara 1-4 mm/hari. Rendahnya kebutuhan air netto untuk tanaman padi merah disebabkan oleh  pergantian lapisan air secara terus menerus dan curah hujan efektif.Abstract. The objective of this descriptive research is to know the net field requirement for red paddy in vegetative and generative phases in Ingin Jaya, Aceh Besar District. This research has been conducted in a tertiary paddy field of CG. 1. Kr of Irrigation Area of Krueng Aceh from February 2013 until May 2013. The stages of research is collecting secondary data, such as: map of irrigation, pattern and time of planting, the irrigation system and precipitation data. The second stage is collecting the primary data, such as: percolation, evapotranspiration, the calculation of effective rainfall and net field requirement in the field. The results showed that at the observed tertiary paddy field, it had loamy and clayey loamy soil textures. The average percolation that occurred in everyday was 2,36 mm/day to 2,69 mm/day. The average evapotranspiration of red paddy at vegetative phase was 1,51 mm/day, which was higher than the evapotranspiration at generative phase, which was 1,39 mm/day, and the water layer rechange was 3,3 mm/day. The net field requirement of red paddy in the field was 1-4 mm/day. This was low due to the occurrence of  a continuous water layer rechange and the effective rainfall.
Analisis Antropometri, Biomekanika, dan Beban Kerja Fisik pada Pengoperasian Alat Pengupas Nenas Tipe Engkol Sri Hartuti; Zulfahrizal Zulfahrizal; Muhammad Dhafir; Muslim Muslim
Rona Teknik Pertanian Vol 4, No 1 (2012): Volume 4, No. 1, April 2012
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v4i1.33433

Abstract

This study aims to analyze anthropometry, biomechanics, and physical workload on the use of a crank-type pineapple peeler. The results showed that the crank-type pineapple peeler could be used at optimum hand reach. Based on the measurement results, the average heart rate for operators ranges from 101–112 pulses/minute, and it was classified as medium workload. The rate of  oxygen consumption at the operator reached 0.67–0.89 liters/minute, and it could be classifiedas low workload.
Perencanaan Stabilitas Lereng Timbunan untuk Perbaikan Saluran Irigasi Sugih, Desa Cibedug, Kecamatan Ciawi, Kab. Bogor Nurul Chayati; Feril Hariati; Alimuddin Alimuddin; Fadhila Muhammad Libasut Taqwa; Muhammad Ilham
Rona Teknik Pertanian Vol 15, No 1 (2022): Volume No. 15, No. 1, April 2022
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v15i1.18959

Abstract

Abstrak. Saluran irigasi Sugih yang terletak di Desa Cibedug, Kecamatan Ciawi, Kabupaten Bogor sudah tidak dapat berfungsi pasca terjadinya longsoran di kawasan tersebut pada akhir tahun 2020. Longsoran tersebut sampai saat ini belum dilakukan perbaikan. Ratusan hektar sawah di Kp. Turki Rt 01 Rw 03 Desa Cibedug dipastikan gagal panen pada musim ini. Saluran irigasi Sugih yang diandalkan oleh warga untuk mengairi sawahnya terputus akibat bencana longsor. Tujuan dari penelitian adalah menganalisis sifat fisis dan mekanis tanah di saluran irigasi Sugih Desa Cibedug, Kecamatan Ciawi Kabupaten Bogor serta melakukan analisis stabilitas lereng dengan Metode Bishop Disederhanakan (Simplified Bishop Method) dan menggunakan aplikasi Autocad 2018 untuk mendapatkan perencanaan stabilitas lereng dan timbunan tanah yang diperlukan. Hasil analisis sifat fisis, mekanis didapatkan nilai parameter tanah. Berat isi tanah kering (gdry) 13,60 kN/m3, berat isi (g) rata rata sebesar 2,18 gr/cm3, nilai sudut nilai geser tanah (f) sebesar 26,19˚ dan nilai lekatan antara partikel tanah kohesi (c) sebesar 0,09 kN/m2,pada software Autocad 2018 didapatkan dimensi lereng 1 : 1, volume galian sebesar 1.594 m3,timbunan sebesar 1.830,26 m3 dan luasan longsoran sebesar 1.000,30 m2. Berdasarkan perhitungan menggunakan Metode Bishop Disederhanakan didapatkan nilai faktor keamanan (safety factor) 1,83 sehingga lereng yang direncanakan tersebut stabil.Embankment Slope Stability Planning for Sugih Irrigation Channel Improvement, Cibedug Village, Ciawi District, Bogor RegencyAbstract. The Sugih irrigation channel which is located in Cibedug Village, Ciawi District, Bogor Regency is no longer functioning after the landslide occurred in the area at the end of 2020. Until now, the landslide has not been repaired. Hundreds of hectares of rice fields in Kp. Turki Rt 01 Rw 03, Cibedug Village is confirmed to have failed crops this season. The Sugih irrigation channel that residents rely on to irrigate their fields was cut off due to landslides. The purpose of the study was to analyze the physical and mechanical properties of the soil in the Sugih irrigation channel of Cibedug Village, Ciawi District, Bogor Regency and to analyze the slope stability using the simplified Bishop method and use the Autocad 2018 application to obtain the required slope stability and soil fill plan. The results of the analysis of physical and mechanical properties obtained soil parameter values. Dry soil fill weight (gdry) 13.60 kN/m3, bulk density (g) average of 2.18 g/cm3, angular value of soil shear value (f) of 26.19˚ and the value of coherence between cohesion soil particles (c) 0.09 kN/m2, in the Autocad 2018 software a 1: 1 slope dimension is obtained the excavation volume of 1,594 m3, an embankment of 1,830.26 m3 and landslide area of 1,000.30 m2. Based on calculations using the simplified Bishop Method, it is obtained the value of the safety factor (safety factor) 1.83 so that the planned slope is stable.

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