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TRANSFORMASI DATA HUJAN – DEBIT MENGGUNAKAN MODEL GR2M PADA DAS AIR DINGIN Nika Rahma Yanti; Rusnam Rusnam
Jurnal Teknologi Pertanian Andalas Vol 24, No 2 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jtpa.24.2.202-209.2020

Pengelolaan sumberdaya air untuk masa yang akan datang sangat berkaitan dengan ketersediaan data. Terdapat beberapa model hidrologi yang telah dikembangkan untuk kegiatan pengelolaan DAS, salah satu model yang bisa digunakan adalah model GR2M. Penelitian ini bertujuan untuk melihat sensitivitas DAS Air Dingin terhadap perubahan curah hujan yang terjadi menggunakan model GR2M. Variabel utama yang dibutuhkan pada model ini adalah data curah hujan dan data evapotranspirasi. Penelitian ini dilaksanakan pada DAS Air Dingin dengan outlet debit yang tersedia pada DAS Air Dingin. Tahapan awal dalam pelaksanaan penelitian ini yakninya pengolahan data curah hujan,, evapotranspirasi bulanan, lalu penentuan parameter X1 (kapasitas simpanan kelembaban tanah) dan X2 (koefisien penyerapan air tanah), dilanjutkan tahapan kalibrasi serta validasi model. Hasil penelitian menunjukan pada tahapan kalibrasi diperoleh hasil koefisien deterministik (R2) sebesar 0,7 dan koefisien efisiensi model Nash (Q) sebesar 0,71 sehingga model GR2M mampu mempresentasikan DAS Air Dingin dengan kriteria memuaskan.

ANALISIS SPASIAL BESARAN TINGKAT EROSI PADA TIAP SATUAN LAHAN DI SUB DAS BATANG KANDIS Rusnam Rusnam
Jurnal Dampak Vol 10, No 2 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.10.2.149-167.2013

Penelitian ini dilakukan pada bulan Agustus dan September 2013 di Sub-DAS Batang Kandis didistrik Koto Tangah Kota Padang dan juga di AMGIS (Sistem Informasi Manajemen PertanianGeographic) Laboratory. Penelitian ini bertujuan untuk menghitung laju erosi dan menentukantingkat bahaya erosi dan mengatur arahan konservasi tanah dan konservasi tanah untolerateduntuk pengendalian erosi. Metode yang digunakan dalam penelitian ini adalah USLE (UniversalSoil Loss Equation) dengan pendekatan Sistem Informasi Geografis. Berdasarkan hasil penelitianini menunjukkan bahwa dari seluruh areal sub-DAS Batang Kandis daerah, diketahui bahwakriteria tingkat bahaya erosi sangat tinggi adalah areal terkecil dengan luas 53,292 hektar , sekitar0,97 % . Hal ini menunjukkan bahwa sebagian besar sub-DAS Batang Kandis memiliki nilai erosiyang masih bisa ditoleransi. Tingkat erosi terbesar di Sub-DAS Batang Kandis terjadi pada satuanlahan KCB sama dengan 1368.246 ton/ha/tahun. Dari hasil identifikasi berdasarkan arahrehabilitasi lahan dan konservasi tanah, maka diperoleh bahwa satuan lahan KCB dan KCLadalah prioritas utama sebagai daerah yang memerlukan tindakan konservasi .Keyword: Erosi, USLE, Unit Tanah, Sistem Informasi Geografis, Rehabilitasi Lahan danKonservasi Tanah

Analisis Perubahan Penggunaan Lahan Daerah Aliran Sungai (DAS) Air Dingin Dan Dampaknya Terhadap Aliran Permukaan Rio Valery Allen; Rusnam Rusnam; Feri Arlius; Revalin Herdianto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

Perubahaan tata guna lahan merupakan sesuatu yang pasti terjadi sebagai akibat adanya pertambahan penduduk dan perkembangan ekonomi. Namun perubahan tata guna lahan sering kali mengabaikan respon hidrologi sebagai akibat pertambahan penduduk. Adanya banjir di tahun 2016 mengindikasikan adanya permasalahan dalam tata guna lahan pada DAS Air Dingin. Berpijak pada permasalahan tersebut penelitian ini memiliki tujuan untuk: (a) menganalisa pengaruh perubahaan penggunaan lahan terhadap respon hidrologi di DAS Air Dingin, dan (b) menentukan pengelolaan lahan optimal sehingga mengurangi laju aliran permukaan yang terjadi di DAS Air Dingin. Menggunakan model HEC-HMS dan metode Curve Number – Soil Conservation Service (CN-SCS) dalam merumuskan skenario penggunaan lahan sehingga aliran permukaan di DAS Air Dingin dapat digambarkan dalam bentuk hidrograf. Nilai CN-SCS divalidasi menggunakan metode Nash-Sutclife dengan nilai efisiensi (E) 0,75 yang berarti model memiliki akurasi tinggi dan dapat diterapkan. Hasil simulasi terhadap skenario 1 menghasilkan debit puncak 497 m3/s lebih kecil jika dibandingkan debit puncak lahan existing 502,4 m3/s.

Rancang Bangun Hidroponik Dengan Bantuan Pompa Bertenaga Surya Fikri Dinegoro; Rusnam Rusnam; Eri Gas Ekaputra
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 3 (2021): September
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i3.367-379

Agriculture traditionally still uses large areas of land with relatively large amounts of water. The application of solar energy is one of the uses of new and renewable energy. This research uses a 50 Wp photovoltaic cell, battery, solar charge controller, DC stepdown, DC pump and hydroponic frame. The stages of the research are the design of the tools, the calculation of the power required by the tools, the manufacture of the tools, the collection of data and the analysis of the data. The data collected is temperature, sunlight intensity, electric power, electrical energy, water discharge, and photovoltaic efficiency. The data were processed and analyzed in an exploratory manner. Based on the results of the research conducted, the lowest average temperature was 25.33 C and the highest was 33.70 C with the highest average light intensity of 920.26 w/m2 at 12.00 WIB. The relationship between temperature and light intensity with a value of R2 of 0.7594. The highest average electrical energy obtained by polycrystalline is 30.44Wh. The water lost from the hydroponic system is 0.03%. The efficiency of photovoltaic cells is 10.09%–15.72%. Keywords: DC pump, hydroponics, light intensity, photovoltaic

Water Stress Influence For Tomato (Solanum Lycopersicum) Production Rusnam Rusnam; Ridho Adi Surya; Muhammad Makky
Andalasian International Journal of Agriculture and Natural Sciences (AIJANS) Vol. 2 No. 01 (2021): Andalasian International Journal of Agricultural and Natural Sciences
Publisher : Institute of Research And Community Service, Andalas University / LPPM Universitas Andalas

Tomato, also known as Solanum lycopersicum, is one of the horticultural commodities that have a good priority to be developed. Tomato production in Indonesia has decreased over five decades. This lack of production is caused by the limitation of water supply during the dry season as to effect of its rooting. One of the ways of ensuring water supply is using an irrigation system, including drip irrigation. The use of drip irrigation will save a lot of water, but the allocation of water to be given will cause to salinity. This phenomenon requires actions to control the water for tomato production. Research in this area is being carried out in the subdistrict of Lubuk Kilangan, Padang City. The current study observes the effect of salinity on the amount of leaf, the productivity, and the sweetness of the tomato fruit. Based on the results, the efficiency of drip irrigation is around 96.28%, and there is no real effect of salinity on the amount of leaf. Additionally, salinity does not affect productivity. The highest productivity is on the treatment of giving water at -15%, amounting to 2.30 kg, and the lowest is at -5%, amounting to 1.72%. Salinity increases the sweetness of tomato, and the highest sweetness level is on the treatment of giving water at -20%, amounting to 5.6600 Brix, and the lowest sweetness level is at the control treatment, amounting to 5.1100 Brix.

ANALISIS DEBIT PADA DAS AIR DINGIN MENGGUNAKAN MODEL SWAT Nika Rahma Yanti; Rusnam Rusnam; Eri Gas Ekaputra
Jurnal Teknologi Pertanian Andalas Vol 21, No 2 (2017)
Publisher : Universitas Andalas

Perubahan penggunaan lahan dari lahan bervegetasi ke non vegetasi mengakibatkan besarnya limpasan (run off) sehingga debit menjadi meningkat terutama pada musim hujan. Penelitian ini dilakukan untuk menganalisis debit pada DAS Air Dingin menggunakan model SWAT dan apakah model SWAT dapat diterapkan dalam mempresentasikan debit pada DAS Air Dingin. Model SWAT memerlukan data iklim, peta dan data tanah, curah hujan, kelerengan dan peta penggunaan lahan. Adapun tahapan yang dilakukan yaitu penyiapan data dan peta, deliniasi DAS, pembentukan HRU, simulasi visualisasi, kalibrasi, dan simulasi dengan model SWAT terkalibrasi. Debit DAS Air Dingin berkisar antara 3 – 30 m3/s. Setelah dilakukan kalibrasi model SWAT dapat mempresentasikan keadaan hidrologi DAS Air Dingin dengan R2 0,76 dan NS 0,64 sehingga model SWAT yang dijalankan dapat dikategorikan memuaskan.

Penerapan Diseminasi Bioteknologi Pemanfaatan Eceng Gondok, Eichornia Crassipes, sebagai Pakan Buatan Alternatif Untuk Pembudidaya Ikan di Sumatera Barat Efrizal Efrizal; Rusnam Rusnam
Jurnal Pengabdian Warta Andalas Vol 23 No 4 (2016): Warta Pengabdian Andalas
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar

This community service activities conducted for the purpose of dissemination of biotechnology utilization of water hyacinth, Eichornia crassipes, as one of the raw materials alternative artificial feed and increasing their knowledge and skills of fish farmers (public) Koto Tangah Village in the business of making the pellets fish in West Sumatra, so hopefully they can do maintenance in a manner / good technique and environmentally friendly. In addition, these service activities are also expected to be able to reduce operating costs in the maintenance of fish and could ultimately increase the income of farmers village of Koto Tangah through the development of sustainable fish farming. To achieve optimal results, the community service that the main target of community service in the District of Koto Tangah this is a fish farmer groups and the coaches / leaders Bangek River villagers are expected to be able to motivate the farmers to promote alternative methods of making artificial feed for the development of freshwater fish farming environmentally friendly. The method used in this activity are (1) Lecture, the main material: (a) provide knowledge about a wide range of raw materials that can be used to feed the fish, (b) provide knowledge about the preparation of formula / artificial food composition, (c) provide knowledge about the process of making artificial food (d) increase the public's knowledge about how to save a good pellet to be more durable and (e) the provision of quality testing of feed materials, whether physical, chemical and biological; and (2) Demonstration of making fermented hyacinth and manufacture of pellets / fish feed alternative to the fermentation mixture of water hyacinth. The results of this IbM service activities found that the knowledge and skills of Sawah Laweh farmer groups and Batang Kandis Jaya farmer groups fishing in Sungai Bangek Village Kelurahan Balai Gadang, Koto Tangah District, Padang, before being implemented IbM service activities is still very low. However, the motivation or desire IbM partner community farmer groups to undertake the cultivation or maintenance of very large fish. It is apparent from the community farmer groups IbM partners to master the manufacturing technology of fermented fish feed water hyacinth relatively high. Furthermore, the results of these community service activities to increase knowledge and skills of the community in the search for alternative feed for aquaculture fish feed that can work well in both areas IbM partners. In order for farming activities run well in both areas IbM partners necessary to service activities on an ongoing basis about the alternative technique of making fish pellets and fish maintenance techniques that efficiently and effectively. Besides, it is necessary to support the provision of funds or credit by the authorities to the public or the fish farmers to capital development efforts.

DISEMINASI TEKNOLOGI FORMULATED DIET ALTERNATIF DALAM UPAYA MENINGKATKAN PRODUKTIVITAS BUDIDAYA IKAN NILA INTENSIF Efrizal, Efrizal; Nurmiati, Nurmiati; Agustien, Anthoni; Syam, Zuhri; Suwirmen, Suwirmen; Zakaria, Indra Junadi; Rusnam, Rusnam; Deswati, Deswati
Jurnal Hilirisasi IPTEKS Vol 4 No 4 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i4.580

Fish cultivators generally experience difficulties providing quality artificial feed (pellets) due to a lack of knowledge and skills in processing technology and making alternative feeds. Besides that, the costs incurred for feed procurement are relatively large, reaching 70 - 80% of the total production costs. However, the provision of feed is often an obstacle because, in addition to the increasingly high price, the quality of available feed does not always match the nutritional needs needed by Fish. The provision of quality feed for intensively cultivated tilapia dramatically affects the resulting growth and productivity. The higher the quality of the feed, the production will also increase. One of the technologies that can be applied to overcome this problem is the manufacture of alternative formulated diets using local raw materials. The method used in this service activity is the transfer of knowledge presented in the socialization activities in the form of 1) introduction to the types of alternative fish feed ingredients sourced from the area, (2) preparation of artificial tilapia feed formulations, (3) manufacturing technology artificial feed (pellets) and 4) monitoring and assistance. The socialization was carried out in the form of a lecture and was followed by a question and answer session. The results of farmer activities recognize the types of local feed that can be used as fish feed, know the preparation of feed formulations, and alternative artificial feed manufacturing technologies. The knowledge and skills possessed by fish cultivators are expected to overcome the difficulties of fish farmers in providing feed so that fish production and cultivation business increase.

DISEMINASI TEKNOLOGI PEMBUATAN PAKAN BUATAN ALTERNATIF DENGAN CAMPURAN LIMBAH KANGKUNG AIR, IPOMOEA AQUATICA FORKS UNTUK PEMBUDIDAYA IKAN DI SUMATERA BARAT Efrizal Efrizal; Rusnam Rusnam; Ferry Lismanto Syaiful
Jurnal Hilirisasi IPTEKS Vol 1 No 3.a (2018)
Publisher : LPPM Universitas Andalas

Community service activities is carried out with the purpose of waste utilization water spinach, Ipomoea aquatica Forks, as a raw material alternative to artificial feed and improve the knowledge and skills of the fish farmers (the community) Village Koto Tangah in the business of making the feed / pellets fish in West Sumatra. The method used in this activity are (1) Lectures, and (2) Demonstration of making flour from waste water spinach and manufacture pellets / alternative fish feed with water spinach flour mixture. From the results of this service activities found that the knowledge and skills of Sawah Laweh farmer groups and Batang Kandis Jaya farmer groups fishing in Sungai Bangek Village Kelurahan Balai Gadang, Koto Tangah District, Padang, before being implemented service activities is still very low. However, the motivation or desire of the community farmer groups partners to undertake fish farming is huge. This can be seen from the wishes of the farmer groups partners to master the technology of waste utilization water spinach, Ipomoea aquatica Forks, as a raw material alternative to artificial feed are relatively high. Further results of this public service activities to increase knowledge and skills of the community in the development of cultured technology and alternative fish feed so that farming activities can run well in both areas partners.

DISEMINASI TEKNOLOGI FORMULATED DIET ALTERNATIF DALAM UPAYA MENINGKATKAN PRODUKTIVITAS BUDIDAYA IKAN NILA INTENSIF DI KOTA PADANG Efrizal Efrizal; Nurmiati Nurmiati; Chairul Chairul; Anthoni Agustien; Zuhri Syam; Suwirmen Suwirmen; Rusnam Rusnam; Deswati Deswati
Jurnal Hilirisasi IPTEKS Vol 4 No 4 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i4.534

Fish cultivators generally experience difficulties providing quality artificial feed (pellets) due to a lack of knowledge and skills in processing technology and making alternative feeds. Besides that, the costs incurred for feed procurement are relatively large, reaching 70 - 80% of the total production costs. However, the provision of feed is often an obstacle because, in addition to the increasingly high price, the quality of available feed does not always match the nutritional needs needed by Fish. The provision of quality feed for intensively cultivated tilapia dramatically affects the resulting growth and productivity. The higher the quality of the feed, the production will also increase. One of the technologies that can be applied to overcome this problem is the manufacture of alternative formulated diets using local raw materials. The method used in this service activity is the transfer of knowledge presented in the socialization activities in the form of 1) introduction to the types of alternative fish feed ingredients sourced from the area, (2) preparation of artificial tilapia feed formulations, (3) manufacturing technology artificial feed (pellets) and 4) monitoring and assistance. The socialization was carried out in the form of a lecture and was followed by a question and answer session. The results of farmer activities recognize the types of local feed that can be used as fish feed, know the preparation of feed formulations, and alternative artificial feed manufacturing technologies. The knowledge and skills possessed by fish cultivators are expected to overcome the difficulties of fish farmers in providing feed so that fish production and cultivation business increase.

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