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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 6 Documents

Search results for , issue "Vol 10, No 2 (2015): Jurnal Irigasi" : 6 Documents clear

Pemanfaatan Ulang Efluen Industri Pengolahan Susu Sebagai AIr Irigasi Untuk Tanaman Padi Yani Suryani; Syamsul Bahri
Jurnal Irigasi Vol 10, No 2 (2015): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Reuse of wastewater with no heavy-metal contains is potential in irrigation water supply, for example, effluent of milk processing industry. The aim of this study is to analyze the effect of milk industry effluent concentration to paddy growth (Oryza sativa L.). For case study, Ciherang variety with water-saving irrigation system scheme is used in an experimental plot with factorial design of 2 x 4. Several scenarios are applied: two treatments fertilization (with and without fertilization) and four variations of wastewater concentrations (0%, 50%, 75% and 100%). This study shows that the variation of wastewater concentrations with fertilization is not significantly affect the plant height, growth rate, number of tillers, and number of panicles. However it is significantly affect the wet grain weight and dry grain weight. The above result might be affected by the excessive nitrogen compound in the effluent, as the dry grain weight decreases to about 16% to 31%.

Sistem Kontrol Tinggi Muka Air Untuk Budidaya Padi - Nurfaijah; Budi Indra Setiawan; Chusnul Arif; Slamet Widodo
Jurnal Irigasi Vol 10, No 2 (2015): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

This research aims to design a control system to keep the water level and soil moisture at a level that is suitable to the plant requirment and determines the optimum water level and soil moisture in each growth phase of paddy field cultivation. The water level control system was formed based on on-off controls system using Arduino Uno ATMega328P microcontroller. When the sensor gives input that the water level is below the set points, then microcontroller will command the irrigation valve to open and the drainage valve to close. The volume and time of irrigation and drainage control are dependent to set point. Set point was controlled based on water regime treatment. Water regime consisted of three treatments, which are wet regime (RB), slightly wet regime (RAB), and dry regime (RK). The research result showed that control system was very effective and efficient in controlling the water regime according to the control algorithms. Besides, the research result showed that the water regimes affected the plant growth, land productivity, and water productivity. Treatment of wet regime (RAB) gave the highest number of tiller (138 tillers), yield 194.7 g/hill (equal to 21 ton/ha with assumption of 30 cm x 30 cm spacing) and water productivity 3.16 kg/m3.

Antisipasi Ekohidrodinamika Pengendalian Eutrofikasi Mendukung Sistem Irigasi Jatiluhur yang Berkelanjutan Eko Winar Irianto
Jurnal Irigasi Vol 10, No 2 (2015): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Eutrophication is one of the serious problems in a reservoir which may disturb the water supply system in the downstream. Jatiluhur Dam is the reservoir with eutrophication problems. One of the methods to control water quality in Jatiluhur Reservoir is ecohydrodynamic method by utilizing Hollow Jet Valve (HJV). A comprehensive HJV operations is required to maintain the already-planned reservoir operation. This paper informs how to analyzes the effect of HJV operation to water quantity and water quality in the downstream of Jatiluhur Reservoir. Analysis result shows that the water level decreases in Jatiluhur Reservoir and increases in Curug Barage while HJV gate operation is still in line with water supply plan and reservoir operation, especially for irrigation sector. Furthermore, the result also shows that HJV operation increases BOD, Total N, and Total P pollutants and still complies with Class-3 of Indonesian National Standard of Water Quality for irrigation water. DO is the most sensitive parameters and 67% increase of BOD might develop an anaerob condition in the hypolimnion layer after the reservoir restoration. Therefore, sinergyc programs between reservoir restoration and water conservation in irrigation network are still required.

Evaluasi Koefisien Tanaman Padi Pada Berbagai Perlakuan Muka Air Nur Aini Iswati Hasanah; Budi Indra Setiawan; Chusnul Arif; Slamet Widodo
Jurnal Irigasi Vol 10, No 2 (2015): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Paddy is the main agricultural commodity in Indonesia that needs a large amount of water. Accurate prediction of crop water use is essential to have an efficient irrigation system. The actual evapotranspiration (ETc) is an important factor for estimating water use. Moreover, crop coefficient (Kc) is one of the important parameters in ETc calculation. In this study, Kc of paddy is estimated by using experimental pots under various water tables treatments. The water table is controlled by using mariotte tube and set at -12 cm, -7 cm, -5 cm, -3 cm, 0 cm, and +2 cm from the soil surface. From the experimental sets, the value Kc is calculated by using modified water balance equation and Kalman Filter. The result shows that water table treatment in paddy farming influences soil moisture ( ) and soil temperature (Tsoil). Soil physic parameter fluctuation due to water table treatment affects the plant growth and potential evapotranspiration. Kc value at each water table treatment is different, and varies with plant growth phase. The average Kc for all water table treatments are 0.77-1.27 (initial season), 0.90-1.11 (crop development), 1.10-1.39 (mid-season), and 1.17-1.40 (late season).

Analisis Kelayakan Finansial Pengembangan Sistem Irigasi Cakram Otomatis Bertenaga Surya di Nusa Tenggara Barat Popi Rejekiningrum; Satyanto Krido Saptomo
Jurnal Irigasi Vol 10, No 2 (2015): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

This study evaluates the result of implementation of water-efficient irrigation technology by using an automated roundshaped emitter, powered by solar cell. In order to determine investment feasibility of the automated system, Net Present Value (NPV), Internal Rate of Interest (IRR) and Benefit Cost Ratio (BCR) analysis have been conducted. An investment is feasible if the project fulfill the following criteria: (1) NPV is greater than zero, (2) IRR is greater than the discount rate which are applicable, (3) BCR greater than 1. The analysis shows that in general, the application of the automated system for mango, sugar apple, grapes, and chili plantation is very feasible. NPV of the investment ranges from Rp 1,533,423 to Rp 21,995,452; BCR value ranges from 1.337 to 3.775, and IRR value ranges from 17.38% to 34.10%. Implementation of the automated system for the development of mango and sugar apple plantation are the most feasible, with highest NPV, BCR and IRR. Whereas, implementation of the automated system for chili plantation is not feasible, since the value of NPV < 0, BCR < 1, and IRR < 14% interest rates. The average payback period of the automated system is about 4 year.

Uji Proporsionalitas Debit Bangunan Bagi Tipe Numbak Hidayah, Susi; Suhardjono, -; Dermawan, Very
Jurnal Irigasi Vol 10, No 2 (2015): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Water distribution structure is the main distribution facility and has been an important part in the operation system of irrigation networks. Numbak configuration lay the secondary water distribution structure, tertiary water tapping structure, and control structures in a parallel position, so it is suitable to be applied for the proportional system. This type of water distribution structure has been recommended in Irrigation Planning Criteria-04 (revision 2013), however, the planning information is still inadequate. The placement of sill on the proportional water distribution structure that has been tested is placed before the peerâ€™s divisor. This makes the position of the distributed flow located not in a critical condition so that the distributed flow is also not proportional. A series of physical tests to assess variations in the placement of sill by the pillars dividing position conducted on a model that has been created by the Experimental Station for Irrigation, Research Center for Water Resources, Ministry of Public Works, is the type of the proportion of 1:2:1. The test results show that the average proportion of the distribution of discharge at all the scenarios for the right channel, center, and left respectively was 0.82:2.4:0.78. Recommendations of use and placement of sill by the pillars divisor as input for the planning and building of this type are also found in this study.

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