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Jurnal Irigasi

jurnal_irigasi
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Published by Puslitbang Sumber Daya Air

ISSN : 19075545 EISSN : 26154277 DOI : -

Core Subject : Agriculture, Engineering,

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Engineering

Jurnal Irigasi merupakan publikasi ilmiah yang memuat hasil-hasil penelitian, pengembangan, kajian dan studi kasus terkait irigasi dan drainase. Ruang lingkup Jurnal Irigasi meliputi survei, investigasi, desain, akuisisi lahan, konstruksi, operasi, pemeliharaan di sistem irigasi yang ditinjau baik dari sisi teknis, ekonomi dan kelembagaan. Terbit pertama kali tahun 1986 dengan nama Jurnal Informasi Teknik dan pada tahun 2006 berganti nama menjadi Jurnal Irigasi. Jurnal Irigasi diterbitkan 2 (dua) kali dalam setahun yakni pada bulan Mei dan Oktober.

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Articles 5 Documents

Search results for , issue "Vol 14, No 1 (2019): Jurnal Irigasi" : 5 Documents clear

Peningkatan Efisiensi Aplikasi Air pada Petakan Sawah dengan Penerapan Irigasi Evaporatif (Kajian Teoritis) - Ardiansyah; Budi Indra Setiawan; Chusnul Arif; Satyanto Krido Saptomo
Jurnal Irigasi Vol 14, No 1 (2019): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Increased awareness of precision agriculture in water management, requires various ideas and methods for its application in the fields. One idea that can be categorized into precision farming as well as appropriate technology, is evaporative irrigation. Evaporative irrigation is an idea to control the provision of irrigation water based on the direct response of plant water needs, namely evapotranspiration. The objectives of this study were to: (1) examine the theoretical aspects of the evaporative irrigation to be applied to plots of rice fields in a plot of plots with irrigation units, (2) laying out design principles for evaporative irrigation valve closures. The results showed that, theoretically, a controller pipe was needed which would be an indicator for thick water in the plot of rice fields. The pipe controller regulates the opening of the irrigation lid to the plot based on the float-ballast principle. The design principle is carried out by simulating the reduction in the controller water level of the controller which illustrates the decrease in thick water plots. Water depth that is still tolerated for rice growth will be the limit for the provision of irrigation water to the plots. Amount of irrigation water provided is equal to the value of plant water needs in the ongoing rice growth phase. One example of the design of the controller pipe water level to start and stop irrigation is at 117.8 mm water level and 300 mm respectively. The total water needs of one crop-season is calculated to be 625 mm. With the application of evaporative irrigation, the initial conditions of sufficient water do not require the provision of irrigation water until the 31st day. Irrigation water application after that, until harvesting, requires only 477 mm. Giving this water follows the plant water requirements calculated on a day-to-day basis.

Peningkatan Intensitas Tanam Padi Melalui Pemanfaatan Debit Surplus Sungai, Penerapan Sumur Renteng, dan Sistem Giliran Ahmad Efendi; Donny Harisuseno; Tri Budi Prayogo
Jurnal Irigasi Vol 14, No 1 (2019): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

The Irrigation Area of Sumber Pakem has an irrigation service area of 1,151 ha, located in Jember Regency and Bondowoso Regency in the Province of East Java. The existing water supply system in the study area has not been implemented effectively and efficiently. Thus, there are problems in the water distribution during the dry season and fluctuations of water availability between the rainy season and the dry season in Banyubang River. The excess discharge in the rainy season can be stored and used to increase the supply of irrigation in the dry season. Therefore, the purpose of this study is to propose alternative irrigation operational method through the optimization of the surplus discharge of Banyubang River, the application of connected wells, and intensive rotation system. In this study, the proposed method was planned and its impact were evaluated on increased cropping intensity.The result showed that the utilizing of river surplus discharge in the study area can increase rice planting intensity during the Planting Season 1 by 2.03% and Planting Season 2 by 27.28%. The surplus discharge is also utilized to fill the 6,599 connected wells (103 network) with the addition of a discharge intake of 6.00 l/s for 135.33 days. The connected wells is filled during abundant river discharge when the irrigation was carried out continuously so as not to interfere with irrigation water distribution in the study area. Water which is stored in the wells can be used in Planting Season 3 to meet the water needs of tobacco plants covering an area of 467 ha. Thus, rice planting area in this period can be increased to 684 ha. The application of a connected wells and intensive rotation system in the Planting Season 3 can increase rice cropping intensity by 38.02%.

Pembaharuan Konsep Prediksi Debit Andalan untuk Operasi dan Pemeliharaan Irigasi Modern Bayu Dwi Apri Nugroho; Sigit Supadmo Arif
Jurnal Irigasi Vol 14, No 1 (2019): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

The management of conventional irrigation system, which is still being applied in the recent time is probabilistic, especially in analyzing discharge for planning of irrigation operation and maintenance. It can be seen from the process of exerted data analysis, which is two-week or ten-days empirical data analysis. Therefore, to change the management of conventional irrigation system into modern requires flexibly and real-time based due to climate change in Indonesia. The available discharge prediction analysis is done using mathematic model analysis as the replacement of probabilistic model and the use of real time observation data by utilizing automatic weather observation technology. This new concept has been attempted in Irrigation Area of Wadaslintang and Banyumas Regency, showing that automatic weather observation worked successfully and can be used as the data within mathematic model analysis. The result indicates that telemetry instruments work well as expected. The difference between the use of mathematic method of Artificial Neural Network (ANN) with probabilistic method of P80 shows that ANN method is closer to real compared to the probabilistic P80. It is shown with the validation result measured from January to August 2015. Overall, errors between water surcharge prediction with ANN and realisation is 77%. According to the results, it is suggested that dynamic mathematic measurement method is needed, due to dynamic condition of climate in spite of not neglecting probabilistic method as comparison.

Analisis Neraca Air pada Pengelolaan Air dalam System of Rice Intensification-Organik (SRI-Organik) di Jawa Barat, Indonesia Chusnul Arif; Budi Indra Setiawan; Septian Fauzi Dwi Saputra; Masaru Mizoguchi
Jurnal Irigasi Vol 14, No 1 (2019): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

The System of Rice Intensification (SRI) has been known in Indonesia since 1999. However, there are some difficulties in utilizing SRI water management recommendations in the field, particularly in combination with organic nutrient management. While many demonstrations have given impressive gains in productivity, many farmers remain skeptical about applying this system. The current study was carried out to analyze water balance components in SRI paddy fields when applying intermittent irrigation. The experiment was conducted in Gabus Wetan village, Indramayu District, West Java, Indonesia from 17 Nov 2016 to 1 March 2017. We involved a local farmer who had been trained in SRI methods at an Organic SRI Center on how to conduct organic SRI management in his fields. Weather and soil sensors were set up in the fields to acquire data on daily field conditions as well as on plant growth. Data on weathers such as precipitation, air temperature, relative humidity, and wind speed were collected automatically during the season every 60 min, as well as the soil water depth. Analyzing the data collected, water balance analysis was well performed with low error (1.00%) in which the water inflows through precipitation and irrigation were 560 mm and 865 mm, respectively, while the outflows by crop evapotranspiration, percolation, and runoff were 430, 306 and 675 mm, respectively. Compared to conventional rice farming as commonly practices by applying continous flooding irrigation, water productivities of organic SRI were 30% and 27% higher with respect to total water input (WPIR) and with respect to the amount of evapotranspiration (WPET, respectively. Organic SRI produced 33% higher yield than that the average of conventional methods in the same subdistrict. The key was intermittent irrigation by maintaining shallow water depth (nearly soil surface) in the vegetative and generative stages. Therefore, it is an attractive option to farmers in irrigated areas where water resources is limited due to regional climate change effects. Keywords:

Analisis Kesiapan Modernisasi Irigasi pada Daerah Irigasi Kewenangan Pemerintah Provinsi di Kabupaten Mojokerto Sari, Dian Puspita; Anwar, Nadjadji; Sidharti, Theresia Sri
Jurnal Irigasi Vol 14, No 1 (2019): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

In carrying out irrigation system management in the irrigation area managed by the East Java Province in Mojokerto, PU Department of Water Resources of East Java experienced some constraint, namely irrigation infrastructure had expired, less of irrigation services and there was a decrease in storage capasity. Another constraint is population growth which has led to an increase in water use needs, food needs, conversion from agricultural land to settlements and industries and critical watersheds. In an effort to overcome these constraint, in addition to the operation, maintenance and rehabilitation, a comprehensive reform is needed, both institutional, technical, managerial, and human resources, known as irrigation modernization. Before carrying out irrigation modernization activities, it is necessary to have an assessment to measure the readiness levels of an irrigation area in carrying out modernization activities. First, determine the criteria that affect the modernization of irrigation, in this case there are 5 criteria and 34 sub criteria. Criteria weights were calculated using Fuzzy Analytical Hierarchy Process method. Then, priority scale of readiness irrigation area in carrying out irrigation modernization activities was determined using Simple Additive Weighting method. From 7 irrigation area managed by the East Java Province in Mojokerto, the resulting priority scale showed that modernization of irrigation can be applied to Kromong Irrigation Area. Modernization of irrigation should be postponed and carried out after revitalization on the Irrigation Area of Mernung, Sinoman, Penewon, Candi Limo, Jatikulon and Subontoro.

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