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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.

Arjuna Subject : -

Articles 99 Documents

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Kajian Desain dan Kinerja Jaringan Irigasi Mikro Berbasis Multi Komoditas di Sumedang Wildan Herwindo; Aditya Prihantoko
Jurnal Irigasi Vol 8, No 1 (2013): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Application of micro irrigation systems for high economic value crops can be an alternative to increase the efficiency of irrigation water use. This is caused that the implementation of micro irrigation using piping network in providing irrigation supply has very high efficiency, so it can optimize the use of water for irrigation and to support improving food security and water. This study aims to design a micro irrigation system design based multi-commodity and investigate the performance of its network. Method in this study is testing in the field using a physical model of micro irrigation located in Sumedang. Network-based multi-commodity micro irrigation applied using gravity water source that have 50 meters in difference. Based on the research results of the performance of the network obtained the average value of uniformity for micro irrigation in Sumedang, with drip emitters pipe is equal to 91.04%, while for micro sprayer emitters of 80.79%. In the application of micro irrigation network is note that the direction of the mounds on land with a rectangular shape should be parallel with the length of the land.

Bendung Bertangga sebagai Alternatif pada Perencanaan Bangunan Irigasi Denik Sri Krisnayanti; Very Dermawan; M. Solichin; Suhardjono Suhardjono; Dian Noorvy Khaerudin
Jurnal Irigasi Vol 11, No 2 (2016): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Stepped weir is generally a modification on the downstream face of a standard ogee weir. The overflow on stepped weir classified in to three types: nappe flow, transition flow, and skimming flow. The skimming flow more used in planning the weir because almost all the operations of weir for large discharge. This study aimed to investigate and examine the advantages of stepped weir by conducting variations models such as slope angle of weir, number of steps, and the value of Froude number. In this research, the models test of stepped spillway carried out with two models of weir type were the ogee weir and the stepped weir. The slope of stepped spillway (θ) are used 30˚ and 45˚, the number of steps (N) are 40 and 20, and the critical depth to the height of steps (yc/h) ranging from 0,700 <yc/h<3.00 with the Froude number (Fr)< 10. The results showed that friction factor of Darcy-Weisbach (f) for the stepped weir is 0.311 which affect the value of energy loss. Levels of dissolved oxygen at stepped weir flow increased by 2.011% - 2.846%. The value of relative energy losses (ΔE1/E0) are 86.129% on the stepped weir and 72.466% on the ogee weir. The increase in value relative energy loss will affect the length of stilling basin in the downstream.

Kebutuhan Air Tanaman untuk Penjadwalan Irigasi pada Tanaman Jeruk Keprok 55 di Desa Selorejo Menggunakan Cropwat 8.0 Liliya Dewi Susanawati; Bambang Suharto
Jurnal Irigasi Vol 12, No 2 (2017): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Keprok 55 (Citrus reticulate) is one of the horticulture commodities which are prioritized to be developed especially in Batu City, Malang. The main problem of Keprok 55 orange is water availability. Crop water requirement so far solely rely on rainfall which is erratic, particulary in the region of Selorejo. Therefore, proper irrigation management is needed, one of them is planning the crop water requirement. This study aims to plan and calculate needs of crop water requirement using Cropwat 8.0 software and evaluate the result with the actual condition. The research was conducted at orange orchard in Selorejo Village, Dau District, Malang Regency. This research uses quantitative descriptive analysis and data processing using Cropwat 8.0. The results showed that the total crop water demand (ETc) during the growth period was 971.90 mm with the highest actual evapotranspiration of the plants reached in October, the third period of 34.80 mm and the lowest in the third February of 19.70 mm. The result from Cropwat 8.0, are very helpful in determining the cropping season and the amount of irrigation for planning purpose. However, day to day operation must be conducted based on actual crop and rainfall condition to maintain soil moisture at appropriate level to support crop growth.

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.

Rancangan Irigasi Sprinkler Portable Tanaman Pakchoy Ahmad Tusi; Budianto Lanya
Jurnal Irigasi Vol 11, No 1 (2016): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Sprinkler irrigation is one of the most efficient and effective effective irrigation. However, on-site application of sprinkler irrigation systems has encountered many obstacles, including the initial investment and operational costs. This study aimed to design a sprinkler irrigation system which saves the initial investment cost and simple in operation and maintenance, especially in the area where agricultural land were separated and small in area (0.10 to 0.30 ha) or without irrigation facilities. The research method in this study were the determination of the length and diameter of the pipe based on analysis of hydraulic pipe in lateral, manifolds and main pipe; sprinkler discharge calculation with volumetric method; and determination of irrigation uniformity with Christiansen method. The portable sprinkler irrigation system has specification: sprinkler nozzle head Impact Plactic type with nozzle size 4 mm, total height riser stick 1.3 meters in diameter ¾" elastic lateral pipe with a diameter of 2" and length 50 meters, pipe sub-main (manifold) and the main pipes of 2". The pump has a total head of 55 meters with a driving power of 5.5 HP, and suction hose 2". This sprinkler irrigation system can operate at operating pressure 1 to 4 bar. The discharge of sprinkler at a pressure of 1 bar is 0.12 l/s. Irrigation uniformity value resulted at a pressure of 1 bar was at 80%. To obtain the value of irrigation uniformity of more than 85%, it is advisable to use a minimum operating pressure of 2 bar.

Penilaian Kinerja Irigasi berdasarkan Pendekatan Permen PU no.32/2007 dan Metode Masscote dengan Evaluasi Rapid Appraisal Procedure (RAP) di Daerah Irigasi Barugbug - Jawa Barat - Mulyadi; Indratmo Soekarno; Suardi Natasaputra
Jurnal Irigasi Vol 9, No 2 (2014): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Irrigation performance is an indicator to description irrigation system management, Assesment Performance based on Permen PU 32/2007 made to the 6 (six) parameters including; Physical Infrastructure, Plant Productivity, Supporting Facilities, Personnel Organization, Documentation and Water User Association (P3A), whereas the assessment is carried out by evaluation method of MASSCOTE with Rapid Appraisal Procedure (RAP) which is a set of systematic procedures to diagnose obstacles, performance and level services in the system irrigation to 4 (four) main indicators include; Service Indicator, P3A Indicator, Human Resource of Operator Indicator, and Channel Operations Modernization indicator, performance assessment are taken by surveyor of respondents Operator irrigation, and farmers P3A, Show performance index by Permen PU 32/2007 gave the value 74.24% which has Well Performance Operations and Maintenance of Barugbug Irrigation, while the MASSCOTE methode show Performance 2.7 in level of Service which has Less Well Performance of Service and Operations Irrigation Channels. Based on the path analysis found significant influence with 4 (four) main indicator variables X1, X2, X3 and X4 to irrigation system performance variable (Y) of 0,701 or 70.1% with a residual error of 0.299 or 29.9%.

Muka Air Optimum Pada System Of Rice Intensification (SRI) Nur Aini Iswati Hasanah; Budi Indra Setiawan; Chusnul Arif; Slamet Widodo
Jurnal Irigasi Vol 12, No 1 (2017): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Controlling water table is the way to manage water in SRI paddy field. Farmers tend to apply different water table depend on their local water management practices. It may have different effect on plant growth that can be seen in the number of tillers. In this study, tiller development of SRI paddy was studied by using experimental pots under various water tables treatments. The water table is controlled by using mariotte tube and set at -12, -7, -5, -3, 0, and +2 cm from the soil surface. The result shows that soil moisture (Ɵ) were fluctuated due to intermittent irrigation and water table treatment. It affects the tiller growths rate that varied with average value 0.21-0.29 tiller/day. The first tiller appears at 18 days after transplanting (DAT). The tillers number keep increasing until reaching the highest number (around 63 to 72 DAT). This empirical study showed that setting water table at -5 cm under soil surface in SRI paddy cultivation is the best to reach high tiller number, and highest land and water productivity compare to another water table treatments. Consistency in producing tiller from beginning tiller production until the end of cultivation season could be seen from this treatment.

Perbandingan Perhitungan Kebutuhan Irigasi Padi Metoda KP-01 dengan Cropwat-8.0 I.D.S. Anggraeni; D.K. Kalsim
Jurnal Irigasi Vol 8, No 1 (2013): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Two different methods for determining irrigation water requirement for paddy , i.e. KP-01 and CROPWAT-8.0, are assessed. The purpose of this research was to analyse paddy irrigation requirement based on KP-01 and CROPWAT-8.0 method. Those methods have different criterias to determine irrigation water requirement. That can be shown from parameters used such as reference crop evapotranspiration (ETo), effective rainfall, land preparation, crop coefficient and physical soil data. The average ETo value using KP-01 was higher (123.6%) than that using Penman-Monteith method (CROPWAT-8.0). The ratio of effective rainfall percentage KP-01 to CROPWAT-8.0 was 42.9%. Water requirement for land preparation using CROPWAT-8.0 was calculated from the water requirement during pre puddling and puddling, while KP-01 used a method developed by Van de Goor and Zijlstra. Water requirement for land preparation using CROPWAT-8.0 method was larger than that using KP-01. Paddy irrigation water requirement using CROPWAT-8.0 calculation was generally lower than that of KP-01, because the difference of effective rainfall method.

Pintu Air Irigasi Elektromekanis Kombinasi Aliran Atas dan Bawah Susi Hidayah; Aditya Prihantoko
Jurnal Irigasi Vol 11, No 2 (2016): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Discharge adjustment in an essential activity in irrigation network. This commonly done using underflow irrigation gate (e.g. sliding gate) which have disadvantages regarding the hydraulic property of flow and floating debris. The overflow irrigation gate (e.g. skot beam) can overcome this but is difficult to operate. It is necessary to combine the important features of both structures so that the disadvantages can be avoided. This paper explains results on the development of double flow sliding gate with underflow and overflow combination which is designed to overcome the undesired hydraulic properties (energy loss) and inaccuracies of flow measurement because of sedimentation. The gate was designed to be easily operated using a solar powered electromechanical system that can be monitored and controlled remotely. Additionally, the gate also built using alternative materials that are GFRP honeycomb composite. The method used is laboratory and field tests on the designed double flow irrigation gate. Physical test results showed the value of materials qualified with predicted loading on the gate. The hydraulic test provided that the gate can predict discharge accurately during water level of 10, 20, and 30 cm. The gate can also control discharge effectively to fulfill fluctuating water balance needs in the service area. This results could be used as a reference to apply the concept of double flow sliding gate which is stated in the Indonesia Irrigation Planning Criteria 08, 2013.

Rancang Bangun Sistem Otomatisasi Irigasi Pipa Lahan Sawah Berbasis Tenaga Surya Sudirman Sirait; Satyanto K. Saptomo; Muhammad Yanuar J. Purwanto
Jurnal Irigasi Vol 10, No 1 (2015): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Design of optimum irrigation equipped by an automatic control system can keep the water level in the soil at a certain level according to the needs of plants, It can increase the productivity and efficiency of irrigation water use in paddy fields. Automatic control system was constructed by utilizing digital technology, microcontroller and sensor networks. Arduino Uno ATMega328P microcontroller was used as an automatic controller to operate electrical valve Valworx 561086 based on soil moisture conditions and water level in paddy fields determined by sensor. Water level of the field was set at a range of 0 to 5 cm setpoint reference to operate electrical valve Valworx 561086. System microcontroller limits the duration of time for setting the opening and closing electrical valve Valworx 561086 for 300 seconds with a rotation of 90that can reduce battery consumption. The system is operated by solar energy, which consists of solar panel, charge controller and battery, and can be operated for 24 hours without operators attending. Irrigation system test was operated by applying intermittent irrigation and water did not flow continuously in paddy field. The result shown that the automatic irrigation system can keep the water level in paddy fields between the desired setpoint range.

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