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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 11, No 2 (2016): Jurnal Irigasi" : 6 Documents clear

Kinerja Jaringan Irigasi Air Tanah pada Irigasi Hemat Air Berbasis Pompa Air Tenaga Surya Joubert, Marasi Deon; Ridwan, Dadang; Pratiwi, Ratna Manik
Jurnal Irigasi Vol 11, No 2 (2016): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Groundwater Irrigation Network (JIAT) contributes substantially to agricultural production especially in the dry season. Limited water availability needs to be handled by water-efficient irrigation methods. JIAT which is built in Ponorogo has not been optimally utilized yet. So, it needs to be revitalized using both drip irrigation and solar energy system to operate the submersible pump. This study uses 51 solar panels covering area of 120 m2. Evaluation resuts of the technology application shows that solar energy can generate 7,873.5 watts, maximum discharge 14.17 liter/second, average CO2 emission reduction 4.1 kg/day, 96.51% irrigation uniformity, drip uniformity of 97.72% and emitter rate of 3.99 mm/hr. CO2 emission can be reduced until 1.29 tons for one pump operation on 10 consecutive months. Moreover, potential reduction of CO2 will reach 4.506 tons in a year if 50% of JIAT pumps from 7,000 existing pumps can be converted to be solar-based pumps. Water productivity for the cultivation of watermelon plants can be achieved as 35.63 kg/m3 water. The water-use efficiency is 60% - 92% compared to the similar research. In addition, pump-operation costs can be decreased to 94.92% compared to the cost of diesel-fueled pump.Â

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.

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.

Potensi Pemanasan Global dari Padi Sawah System of Rice Intensification (SRI) dengan Berbagai Ketinggian Muka Air Tanah Chusnul Arif; Budi Indra Setiawan; Deka Trisnadi Munarso; Muhammad Didik Nugraha; Pradha Wihandi Sinarmata; Ardiansyah Ardiansyah; Masaru Mizoguchi
Jurnal Irigasi Vol 11, No 2 (2016): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

System of Rice Intensification (SRI) is known as alternative rice farming for the mitigation of greenhouse gas (GHG) emissions. There are two main gasses emitted from paddy fields, i.e., methane (CH4) and nitrous oxide (N2O). Both of these gases have different characteristics as response on water availability in the fields which is represented by groundwater levels. Global Warming Potential (GWP) is used as an index that allowed comparisons of the global warming impacts of different gases at specific time period to warm the earth and it is equivalent to the value of the potential of CO2. This study aimed to analysis the global warming potential from different water regimes with SRI practices. Achieving the objective, rice cultivation with three water regimes was carried out during one planting season (14 April until 5 August 2016) in experimental plots of Department of Civil and Environmental Engineering IPB, Bogor, Java West. The regimes were continous flooding, moderate and dry regimes, respectively. The results showed that dry regime has the lowest global warming potential than those others regimes. Its potential was 34% and 41% lower than those for flooding and moderate regimes, respectively. In addition, dry regime produced more grain yield. Its productivity was 21% greater than that flooding regime. These results were obtained from specific climate and location. To corroborate the results, further research is needed under different weather conditions and multi-locations.

Rancang Bangun Sistem Irigasi Tetes untuk Budidaya Cabai (Capsicum Annum L.) dalam Greenhouse di Nagari Biaro, Kecamatan Ampek Angkek, Kabupaten Agam, Sumatera Barat Eri Gas Ekaputra; Delvi Yanti; Deni Saputra; Fadli Irsyad
Jurnal Irigasi Vol 11, No 2 (2016): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Chili plants (Capsicum Annum L.) requires the availability of water in sufficient quantities and timely. The situation can be achieved by the application of drip irrigation system. This is due to the system can set the amount and timing in accordance with the water requirements of chili plants. This research was conducted in Nagari Biaro, District Ampek Angkek, Agam regency which aims to design a drip irrigation system that is suitable and appropriate for chili cultivation in the greenhouse. In this study, observations were conducted to the evapotranspiration of chili (ETC), technical testing, and feasibility analysis of drip irrigation systems. Based on the research results, highest ETc of 2.16 mm/day was occurred in the period from the beginning of the generative phase, with an average discharge droplets of 137.685 mm3/sec, the system operated for 0.84 hours/day to meet the water needs of chili plants. However, by considering the three parameters of technical feasibility, the system is still not feasible because there was only one that fits the required value, namely the distribution efficiency (91.49%). The uniformity (76.97%) and irrigation efficiency (74.37%) have not yet reached the minimum required value of 90%, this is caused by differences in head and the length of each channel, thus the pressure on the line was not uniform which causing varied discharge droplets.

Potensi dan Upaya Pemanfaatan Air Tanah untuk Irigasi Lahan Kering di Nusa Tenggara Heni Rengganis Soedireja
Jurnal Irigasi Vol 11, No 2 (2016): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Nusa Tenggara region has a vast dry land area but they are very potential to be developed. The water availability as one of the determinants has a role in helping to increase productivity in an effort for dry land utilization. Groundwater potential can be technically applied for dry lands irrigation in Nusa Tenggara. This paper provided the study results of both potential and groundwater utilization as irrigation water resources in dry land in Nusa Tenggara, by considering groundwater potential resource, land conditions, plants variety, and water supply technology. The method used is descriptive analysis by collecting primary and secondary data through visits to several related agencies, literature studies, and field surveys. These results provide further proposed groundwater development through the conjuctive use of surface water and groundwater. Moreover, the results are expected to be used either in the proposed water resources management policy in the area or as feedback to stakeholders in groundwater utilization, particularly in the dry land as well as for further research.

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