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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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Prediksi Erosi Kebun Kopi Rakyat di Kecamatan Permata, Kabupaten Bener Meriah, Provinsi Aceh Hairul Basri; Syamaun A. Ali; Konadi Konadi
Rona Teknik Pertanian Vol 5, No 2 (2012): Volume 5, No. 2, Oktober 2012
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v5i2.231

Abstract

Prediction of Erosion in the Coffee Plantation in Subdistrict of Permata, District of Bener Meriah, Province of AcehAbstract. This study aimed to determine the level of erosion that occurred on the slopes of plantation of coffee community in sub-district of Permata, district of Bener Meriah, Province of Aceh, conducted from January to August 2011. Coffee plantations of community were located in sub-district of Permata as samples, particularly in the village of Jungke which had 8 percent slope and the village of Seni Antara which had 30 percent slope. This study was conducted by field observation and laboratory analysis to predict the values of erosion using the method of USLE (universal soil loss equation). Further Erosion Hazard Level (TBE) was determined by considering the effective depth of soil. The results showed that the value of the actual erosion that occurred in the coffee plantation of community in the village of Seni Antara which had 30 percent slope at 87,711.47 tones ha-1 year-1 greater than the actual value of erosion in the village Jungke which only 8 percent slopes at 21.79 tones ha-1 year-1. Erosion Hazard Rate on slopes of 30 percent (village of Seni Antara) classified as very heavy, while TBE at 8 percent slope (Village of Jungke) as light. The main factors that affected the value of erosion were the value of LS (long and large slope) and the value of K (erodibility). To prevent erosion on coffee plantations advised people to be able to add shade trees, use of litter and planting cover crops. 
Analisis dan Pemetaan Limpasan Permukaan di DAS Citanduy Hulu dengan Metode SCSN Asep Kurnia Hidayat; Pengki Irawan; Jaza'ul Ikhsan; Sri Atmadja; Novia Komala Sari
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.v14i1.17699

Abstract

Abstrak. DAS Citanduy merupakan salah DAS yang terbesar di pulau Jawa dengan sungai utama adalah Cintanduy. DAS Citanduy terdiri dari beberapa sub DAS, salah satunya adalah sub DAS Citanduy Hulu. Perubahan tata guna lahan di DAS Citanduy Hulu terus terjadi, kondisi tsb telah mengakibatkan peningkatan debit banjir di sungai. Peningkatan debit di sungai diakibatkan adanya limpasan permukaan akibat hujan. limpasan permukaan dapat dianalisis menggunakan metode SCS (Soil Conservation Service). Metode SCS juga dianalisis berdasarkan kondisi tanah, sehingga dapat menentukan nilai Curve Number (CN) dari lahan. Hasil analisis tahun 2018, menunjukkan bahwa tutupan lahan 18,99% atau 13.735,97 ha berupa hutan (hutan primer, sekunder dan hutan tanaman). Sebaran jenis tanah di umumnya adalah Typic Dystrudepts (36,57%) dan Typic Hapludands (37,93%). Hydrological Soil Group (HSG) di DAS Citanduy Hulu didominasi oleh klas B sebesar 76, 92 %. Hasil analisis didapatkan bahwa DAS Citanduy Hulu tebal runoff maksimum pada PUH 2, 5, 10, 25, dan 50 tahun secara berurutan adalah 104 mm, 133 mm, 147 mm, 171 mm dan 187 mm. Tebal limpasan permukaan minimum dengan PUH 2, 5, 10, 25 dan 50 tahun secara berurutan adalah 17 mm, 31 mm, 39 mm, 53 mm dan 64 mm. Tebal limpasan permukaan menunjukkan potensi peningkatan debit banjir.Analysis And Mapping Runoff In Watershed Upper Citanduy With SCSN MethodAbstract. Citanduy watershed is one of the largest watersheds on the island of Java with the main river being Cintanduy. The Citanduy watershed consists of several sub-watersheds, one of which is the Upper Citanduy sub-watershed. Changes in land use in the Upper Citanduy watershed continue to occur, this condition has resulted in an increase in flood discharge in the river. The increase in discharge in the river is caused by surface runoff due to rain. Surface runoff can be analyzed using the SCS (Soil Conservation Service) method. The SCS method is also analyzed based on soil conditions so that it can determine the Curve Number (CN) value of the land. The results of the 2018 analysis show that 18.99% or 13,735.97 ha of land cover is forest (primary, secondary and plantation forests). The distribution of soil types, in general, is Typic Dystrudepts (36.57%) and Typic Hapludands (37.93%). Hydrological Soil Group (HSG) in the Upper Citanduy watershed is dominated by class B by 76.92%. The results of the analysis showed that the maximum runoff thickness of the Upper Citanduy Watershed at PUH 2, 5, 10, 25, and 50 years respectively was 104 mm, 133 mm, 147 mm, 171 mm, and 187 mm. The minimum surface runoff thickness with PUH 2, 5, 10, 25, and 50 years respectively is 17 mm, 31 mm, 39 mm, 53 mm, and 64 mm. The thickness of the surface runoff indicates the potential for increased flood discharge.
Analisis Kecepatan Aliran Fluida terhadap Kinerja Kolektor Surya Yang Bergerak Mengikuti Posisi Matahari Kandungan Feby Nopriandy; Suhendra Suhendra; Ari Rianto
Rona Teknik Pertanian Vol 12, No 2 (2019): Volume 12, No. 2, Oktober 2019
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v12i2.13524

Abstract

Metode pengeringan menggunakan surya sebagai sumber energi panas adalah metode pengeringan yang banyak digunakan. Besarnya panas yang dihasilkan tergantung dari jumlah radiasi matahari yang dapat ditangkap oleh kolektor surya. Tangkapan radiasi matahari dapat dioptimalkan dengan merekayasa kolektor surya yang dapat bergerak mengikuti posisi matahari. Kualitas produk pangan yang dikeringkan sangat dipengaruhi oleh aliran udara panas pada proses pengeringan. Berdasarkan permasalahan tersebut, perlu dilakukan kajian tentang aliran udara panas pada kolektor surya yang bergerak mengikuti posisi matahari. Penelitian menggunakan 2 buah kolektor surya yang direkayasa dengan ukuran, bentuk dan bahan yang sama dimana salah satu kolektor berada dalam kondisi tetap dan kolektor lainnya dapat bergerak mengikuti posisi matahari. Kecepatan aliran udara panas yang keluar dari saluran keluar (outlet) kolektor surya divariasikan menjadi 3 perlakuan yaitu 2 m/s, 4 m/s dan 6 m/s. Pengambilan data dimulai dari pukul 08.00 sampai pukul 16.00 dengan selang waktu pengambilan data adalah setiap 30 menit. Hasil analisis menunjukkan bahwa kecepatan udara panas pada outlet kolektor surya sangat berbeda nyata pengaruhnya terhadap nilai temperatur udara panas di dalam dan outlet kolektor surya. Kolektor surya yang bergerak mengikuti posisi matahari dapat meningkatkan performansi temperatur di dalam dan outlet kolektor surya pada berbagai kondisi kecepatan udara outlet berbanding kolektor surya tetap. Kenaikan performansi tertinggi di dalam dan outlet kolektor surya diperoleh pada kecepatan udara outlet 2 m/s masing-masing sebesar 16,29% dan 3,98%.
Karakteristik Mutu Minyak Pala Berdasarkan Peralatan Distilasi Drum Bekas dan Distilasi Stainless (Studi Kasus di Kabupaten Aceh Selatan) Mustafril Mustafril
Rona Teknik Pertanian Vol 10, No 2 (2017): Volume 10, No. 2, Oktober 2017
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v10i2.8491

Abstract

Quality Characteristics of Nutmeg Oil Between Used Barrels Distillation and Stainless Distillation  (A Case Study in Aceh Selatan Regency)ABSTRACT. The Province of Aceh is the center of nutmeg oil production in Indonesia, which is about 70%-75% of the nutmeg oil production in Indonesia, is produced in the districts of South Aceh and Southwest Aceh. The rest is coming from the provinces of West Sumatra and West Java. Meanwhile, the nutmeg harvested in Maluku, North Maluku, North Sulawesi, and West Papua is not processed for its essential oil, but merely exported as spices. It is estimated that in 2017 the production of nutmeg oil will reach about 350-400 tones. The government has put a standard for nutmeg oil based on SNI 06-2388-2006. Therefore, taking this standard as consideration, a study on the characteristics of nutmeg oil quality in South Aceh was carried with 14 distillers as the sample. The tested nutmeg oil was taken from the distillers, both stainless distillation drum and used drum. The characteristics of nutmeg oil coming out of the used drum is from colorless to pale yellowish one, has nutmeg scent, specific gravity: 0,884 - 0,960, rafractive index: 1,481-1,500, optical rotation: (+)6,20o - (+)19,30o and rest of evaporation  is between 5,70% - 28,15%. On the other hand, the characteristic of nutmeg oil taking from stainless distiller is colorless, has nutmeg scent, specific gravity: 0,861 - 0,892 refractive index:  1,472 - 1,484, optical rotation: (+)10,83o- (+)18,00o, and rest of evaporation is 0,50% - 4,80%. Most of nutmeg oil processed by used drum did not meet the SNI standard, whereas few of nutmeg oil distilled in stainless and semi stainless drum has met the SNI standard of nutmeg oil.Correlation of specific gravity and refraction index of nutmeg oil for stainless distillation is refraction index (Y) = 0,3151X + 1,2014, where R2 = 0,8403; whereas for used barrels distillation is refraction index (Y) = 0,28X + 1,2334, where R2 = 0,9637.Correlation of Optical Rotation for stainless distillation is Optical Rotation (Y) = -223,02X + 209,81, where R2 = 0,9645;conversely, forused barrels distillation Optical Rotation (Y) = -155,01X + 156,2, where R2 = 0,9348.Correlation of refraction index with Optical Rotation for nutmeg oil distilled with stainless distillation is Optical Rotation (Y) = -610,36X + 915,96, where R2 = 0,8536; contrarily for distillation with used barrels Optical Rotation (Y) = -545,71X + 827,26, where R2 = 0,9427.
A Phenology Analysis of Palm Oil (Elaeis Guineensis Jacq) Growth Using Satellite Imagery Approach (A Case Study in Darul Makmur Sub-District, Nagan Raya Regency, Aceh) Ijal Wandi; Sugianto Sugianto; Syakur Syakur
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.v15i2.24210

Abstract

Abstract. Vegetation index values derived from the  Landsat-8 OLI images have been used widely to assess plant growth, especially in oil palm plantations. This study intends to estimate growth rates and establish the phenology of oil palm growth based on spectral reflection patterns. This study employed multitemporal Landsat-8 OLI images from 2013, 2014, 2017, 2020, and 2021 to visually interpret satellite imagery based on spatial and digital detection of object attributes. The phenology of oil palm growth is grouped into the Seed-0 Phase (0-1 Years), Seed Phase (1-3 Years), Young Phase (4-8 years), Teenage Phase (9-14 years), Mature Phase (15-20 years) and Old Phase ( 20 years). The results of the digital analysis of Landsat 8 OLI show that the spectral reflection pattern has almost the same shape at the same wavelength and varies in each phase of oil palm growth. The average NDVI vegetation index value shows a green peak in the teenage phase (0.908). The results of a simple linear regression averaging the NDVI vegetation index value with the average age data of each oil palm growth phase from the TBM-0 phase (0-1 year) to the old phase ( 20 years) yields a moderate relationship for the transformation of the vegetation index NDVI. The transformation of the NDVI vegetation index produces an R² with a value of 0.483 that the regression results formed above the adolescent phase (9-13 years) do not form a pattern
Penyimpanan Vakum Buah Nangka Segar (Artocarpus Heterophyllus L.) Terolah Minimal Menggunakan Kemasan Plastik Polipropilen Ratna Ratna; Yusmanizar Yusmanizar; Amelia Maifani
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.v6i2.20430

Abstract

Abstrak. Penelitian ini bertujuan untuk melihat pengaruh suhu penyimpanan dan lama penyimpanan terhadap mutu simpan buah nangka segar terolah minimal (minimally processing) yang dikemas dalam kemasan vakum. Buah nangka terolah minimal yang dikemas dengan kemasan vakum plastik polipropilen mampu bertahan selama 8 hari penyimpanan dibandingkan tanpa dikemas hanya mampu bertahan 4 hari penyimpanan. Perlakuan terbaik yang mampu mempertahankan mutu buah nangka masak yang terolah minimal dalam kemasan vakum polipropilen adalah perlakuan penyimpanan pada suhu 10 ᴼC. Nilai susut bobot sebesar 11,63%, tekstur sebesar 0,06 Kg/cm2, total padatan terlarut (TPT) sebesar 17,74 ᴼBrix dan vitamin C sebesar 2,99%. Hasil uji organoleptik terhadap aroma, tekstur, rasa, warna dan kesegaran buah nangka masak terolah minimal yang paling disukai oleh panelis adalah perlakuan pada penyimpanan pada suhu 10 ᴼC.Abstract. The objective of this research is to find out the influence of storage temperature and the length of storage towards the quality of minimally processing of fresh jackfruit that packaged in a vacuum polypropylene plastic. The minimally processing of fresh jackfruit that stored in a vacuum polypropylene plastic remained good for 8 days, whereas the unpacked only remained for 4 days. The best treatment to maintain the quality of fresh jackfruit that minimally processed in a vacuum polypropylene plastic was at temperature of 10 ᴼC. The weight loss was 11,63%, texture was 0,06 kg/cm2, total of dissolved solid was 17,74 ᴼBrix, and C vitamin was 2,99%. The results of the organoleptic tests on aroma, texture, flavor, color, and the freshness of minimally processed of jackfruit that panelists liked the most was the treatment at storage temperature of 10 ᴼC.
Phytochemicals - Bioactivity of Avicennia marina Leaves Extract, and Its Application in Food Products: A Brief Literature Review Jatmiko Eko Witoyo; Panggulu Ahmad Ramadhani Utoro
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.v16i2.31752

Abstract

Abstract. Avicennia marina (A. marina) is a tropical and non-tropical biodiversity that grows along the coast worldwide, including Indonesia. A. marina, known as the "gray mangrove" tree, is a mangrove plant of the Avicenniaceae family. A widely used plant part is A. marina leaves, which are further processed into A. marina leaves extracts. Various studies on A. marina leaves, extract, and their application to food products have been extensively researched and communicated in various scientific papers. So, this study aims to provide an overview of the current knowledge on A. marina leaves extract, focusing on its phytochemical-bioactivity and application in food products. Various studies have reported that A. marina leaves extract contains polyphenols, flavonoids, steroids, terpenoids, alkaloids, cardiac glycosides, saponins, tannins, anthraquinones, and other phytochemical compounds based on phytochemical screening. Several recent studies also reported that A. marina leaves extracts to have many benefits due to their biological activities, including antioxidant, anti-bacterial, anti-fungal, anti-cancer activities, and so on. The application of A. marina leaves in the food product is reported to be able to increase the specific nutritional value, such as chocolate bars and noodles. In addition, the water extract of A. marina leaves can maintain the quality of fishery products, especially fresh fish, and acts as a natural bio-formalin or bio-preservation. In future research, the application and supplementation of water extract of A. marina leave in other food products need to be studied further. In addition, other food process engineering must be applied and evaluated to produce extract of A. marina leaves with maintained bioactive compounds and their bioactivity Fitokimia - Bioaktivitas Ekstrak Daun Avicennia marina dan Aplikasinya pada Produk Pangan: Tinjauan Literatur SingkatAbstrak. Avicennia marina (A. marina) merupakan keanekaragaman hayati tropis dan non-tropis yang tumbuh di sepanjang pantai di seluruh dunia, termasuk Indonesia. A. marina, yang juga dikenal sebagai pohon "bakau abu-abu", adalah tanaman bakau dari keluarga Avicenniaaceae. Bagian tanaman yang banyak dimanfaatkan adalah daun A. marina, yang selanjutnya diolah menjadi ekstrak daun A. marina. Berbagai penelitian mengenai daun A. marina, ekstrak, dan aplikasinya pada produk pangan telah banyak diteliti dan dikomunikasikan dalam berbagai karya ilmiah. Oleh karena itu, penelitian ini bertujuan untuk memberikan gambaran umum tentang pengetahuan terkini tentang ekstrak daun A. marina, dengan fokus pada fitokimia-bioaktivitas dan aplikasinya pada produk pangan. Berbagai penelitian telah melaporkan bahwa ekstrak daun A. marina mengandung polifenol, flavonoid, steroid, terpenoid, alkaloid, cardiac glycosides, saponin, tanin, antrakuinon, dan senyawa fitokimia lain berdasarkan skrining fitokimia. Beberapa penelitian terbaru juga melaporkan bahwa ekstrak daun A. marina memiliki banyak manfaat karena aktivitas biologisnya, seperti aktivitas antioksidan, anti-bakteri, anti-jamur, dan anti-kanker. Aplikasi daun A. marina pada produk makanan, seperti pada chocolate bars dan mie, dilaporkan dapat meningkatkan nilai gizinya secara spesifik. Selain itu, ekstrak air daun A. marina dapat menjaga kualitas produk perikanan, terutama ikan segar, dan berperan sebagai bio-formalin atau pengawet alami. Pada penelitian selanjutnya, aplikasi dan suplementasi ekstrak air daun A. marina pada produk pangan lain perlu dikaji lebih lanjut. Selain itu, rekayasa proses pangan lain perlu diterapkan dan dievaluasi untuk menghasilkan ekstrak daun A. marina dengan senyawa bioaktif dan bioaktivitas yang terjaga.
Modeling of Sapodilla Fruit (Manilkara zapota (L.) van Royen) Terminal Velocity in Water Andasuryani Andasuryani; Renny Eka Putri
Rona Teknik Pertanian Vol 11, No 2 (2018): Volume 11, No. 2, Oktober 2018
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v11i2.13588

Abstract

Abstract. Terminal velocity is one of the hydrodynamic fruits properties that significant in the development of sorting equipment. The study aimed to determine terminal velocity of sapodilla which could be used while develop a sorter. The terminal velocity of sapodilla fruit was determined experimentally and empirically by considering the theory of KHAT 2. Experimental measurements were made by dropping the fruit into the water column, while the calculations were empirically considering the parameters of physical properties such as differences in density between fruit and water, volume and shape factor. The results showed that the obtained model was vt = 165.370 (ρf -ρw) 0.026 V 0.813 Sh0+ 0.070. The model has maximized the value of R2, minimizing the RMSE value and reducing the chi-square value which were 0.9046, 0.008 and 7.300E-05, respectively. Volume was the most effective parameter while determining terminal velocity of sapodilla fruit. Pemodelan Kecepatan Terminal Buah Sapodilla (Manilkara zapota (L.) van Royen) Pada di Air Abstrak. Kecepatan terminal adalah salah satu sifat buah hidrodinamik yang signifikan dalam pengembangan peralatan penyortiran. Penelitian ini bertujuan untuk menentukan kecepatan terminal sapodilla yang dapat digunakan saat mengembangkan penyortir. Kecepatan terminal buah sawo ditentukan secara eksperimen dan empiris dengan mempertimbangkan teori KHAT 2. Pengukuran eksperimental dilakukan dengan menjatuhkan buah ke kolom air, sedangkan perhitungan secara empiris mempertimbangkan parameter sifat fisik seperti perbedaan kepadatan antara buah dan faktor air, volume dan bentuk. Hasil penelitian menunjukkan bahwa model yang diperoleh adalah vt = 165.370 (ρf -ρw) 0,026 V 0,813 Sh0 + 0,070. Model ini telah memaksimalkan nilai R2, meminimalkan nilai RMSE dan mengurangi nilai chi-square yang masing-masing adalah 0,9046, 0,008 dan 7,300E-05. Volume adalah parameter yang paling efektif saat menentukan kecepatan terminal buah sawo.
Analisis Daya Dukung Lahan untuk Sawah Tadah Hujan di Kabupaten Pasaman Barat Feri Arlius; Fadli Irsyad; Delvi Yanti
Rona Teknik Pertanian Vol 10, No 1 (2017): Volume 10, No. 1, April 2017
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v10i1.7246

Abstract

Abstrak. Penambahan luas areal pengembangan sawah merupakan salah satu upaya untuk menjaga ketahanan pangan di Kabupaten Pasaman Barat yang dapat dilakukan dengan cara analisis daya dukung lahan untuk mengetahui potensi lahan, sehingga menghasilkan peta potensi lahan sawah tadah hujan di Kabupaten Pasaman Barat yang dapat memberikan informasi tentang tingkat kesesuaian lahan, distribusi dan luasan lahan pengembangan sawah di Kabupaten Pasaman Barat. Penelitian ini dilakukan dengan metode scoring dan overlay menggunakan softwareArc Gis 10 pada bulan Maret – April 2015 di Kabupaten Pasaman Barat dan Laboratorium Teknik Sumber Daya Lahan dan Air, Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Andalas. Dari hasil analisis, diperoleh lahan yang memiliki potensi pengembangan luasan sebesar 148.865,76 ha. Lahan yang memiliki potensi untuk pengembangan sawah tadah hujan di Kabupaten Pasaman Barat, yaitu dengan 114.536,64 ha atau 76,94% merupakan kelas sangat sesuai (S1) dan 34.329,12 ha atau 23,06% merupakan kelas cukup sesuai (S2). Namun dari hasil analisis neraca air pada lahan potensi pengembangan didapatkan nilai neraca air yang mengalami defisit akibat dari ketersediaan air dari curah efektif padi tidak mencukupi kebutuhan air tanaman selama pertumbuhan. Untuk memenuhi kekurangan kebutuhan air tersebut maka diperlukannya penjaminan air melalui irigasi. Analisys Land Support Power to Field Storage Receptacle In West PasamanAbstract. The addition land of development field is one of the way to maintenence food endurance in West Pasaman District can conducted by analyse land support power to identify potential land, it contains maps of potential field storage receptacle in West Sumatera district, that can give information about land suitability, distribute, and development land in West Pasaman district. This research was conducted by using scoring method and overlay using software ArcGIS 10 on March-April 2015 in West Pasaman District and Land and Water Resources Engineering Laboratory, Department of Agricultural Engineering, Faculty of Agricultural Technology, Andalas University. From the analysis, land potencial can be developed is 148.865,76 ha. 114.536,64 ha or 76,94%, development land in West Pasaman District is classifid to extremly suit class (S1) and 34.329,12 ha or 23.06% is classified to suit class (S2). Although, water balance analysis in potencial development land decrease, beacuse of the availability of water from effective rain can not cover the plant need as a growth period. This research is needed To fill the decrease of water by using irrigation.
Uji Kinerja Pengering Surya dengan Kincir Angin Savonius untuk Pengeringan Ubi Kayu (Manihot esculenta) Rian Juli Yanda; Hendri Syah; Raida Agustina
Rona Teknik Pertanian Vol 7, No 2 (2014): Volume 7, No. 2, Oktober 2014
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v7i2.2649

Abstract

Abstrak. Ubi kayu merupakan salah satu tanaman yang mengandung karbohidrat. Ubi kayu dapat dikeringkan untuk mendapatkan produk olahan contohnya pembuatan tepung dan gaplek. Pada penelitian ini dilakukan modifikasi pengering surya dengan menambahkan kincir angin savonius sebagai penggerak kipas pada pengering tersebut yang bertujuan untuk memaksimalkan sirkulasi udara didalam ruang pengering. Parameter yang dilakukan diantaranya pengukuran kecepatan udara, distribusi temperatur, kelembaban relatif, iradiasi surya dan pengukuran kadar air. Dengan penambahan kincir angin savonius, kecepatan udara di dalam pengering surya lebih stabil bila dibandingkan dengan kecepatan udara di lingkungan. Temperatur di dalam ruang pengering lebih tinggi dari pada temperatur lingkungan, sedangkan kelembaban relatif di dalam pengering lebih rendah dibandingkan dengan di lingkungan. Hal ini menyebabkan proses pengeringan berlangsung cepat. Nilai iradiasi surya yang didapat berfluktuasi. Iradiasi tertinggi diperoleh pada hari kedua penelitian yaitu 595 W/m2. Kadar air awal ubi kayu yaitu 61,7 %. Kadar air akhir yang diperoleh rak A5 yaitu sebesar 11,7% dan rak B1 yaitu sebesar 12,9% sudah mendekati kadar air yang diharapkan untuk  pembuatan tepung yaitu 12%. Performance of Solar Dryer by Using Savonius Windmill for Cassava (Manihot esculenta) DryingAbstract. Cassava is one of the plants that contain carbohydrates. Cassava can be dried to produce processed products such as cassava flour and “gaplek”. In this research, the solar dryer was modified by adding a savonius windmill as fan drive which aims to maximize the air circulation inside the drying chamber. The observed parameters include air velocity, the distribution of temperature, relative humidity, solar irradiation and the water content. The addition of savonius windmill caused the air velocity in the solar dryer was more stable when compared to the speed of the air in the environment. Moreover, the temperature in the drying chamber was higher than the ambient temperature, while the relative humidity in the dryer was lower than in the environment. As a result, it caused rapid drying process. Solar irradiation values obtained fluctuate. The highest irradiation was obtained on the second day of the study (595 W / m2). The moisture content of the cassava decreased from  61.7% to 11.7% (at A5 rack) and 12.9% (at B1 rack). Those values was approaching the expected flour water content (12% ).

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