ISSN : 1907-5545 Terakreditasi - Sertifikat Kepala P2MI-LIPI Nomor : 417/AU/P2MI-LIPI/04/2012
JURNAL
IRIGASI Vol. 9 No.2, Oktober 2014
Jurnal Irigasi merupakan publikasi ilmiah yang memuat hasil-hasil penelitian, pengembangan, kajian atau gagasan dalam bidang ke-irigasi-an. Terbit pertama kali tahun 1986 dengan nama Jurnal Informasi Teknik dan pada tahun 2006 berganti nama menjadi Jurnal Irigasi yang diterbitkan 2 (dua) kali setahun yaitu pada bulan Juni dan November, kemudian pada tahun 2011 Jurnal Irigasi mempercepat penebitan dalam setiap tahunnya menjadi bulan Mei dan Oktober. Dengan komitmen terus menjaga dan meningkatkan kualitas dalam setiap terbitannya, Jurnal Irigasi kini hadir dalam ukuran A4 (210 x 297 mm) sesuai dengan ketentuan Pedoman Akreditasi Majalah Ilmiah yang diterbitkan oleh LIPI. Jurnal Irigasi terbuka untuk umum, peneliti, akademisi, praktisi dan pemerhati masalah irigasi. Pembina Dr. Ir. Suprapto, M.Eng Penanggung Jawab Drs. Irfan Sudono, MT Penelaah Ahli/Mitra Bestari Prof. Dr. Ir. Sigit Supadmo Arif, M.Eng (Bidang Irigasi) Prof. Dr. Ir. Indratmo, M.Sc (Bidang Irigasi) Prof. Dr. Ir. Asep Sapei, MS (Bidang Irigasi) Prof .Dr. Ir. Budi Indra Setiawan, M.Agr. (Bidang Pertanian) Prof. Radianta Triatmadja, Ph.D (Bidang Teknik Sipil) Prof. Ir. Lilik Soetiarso, M.Eng, Ph.D (Bidang Teknik Pertanian) Ir. Dedi Kusnadi Kalsim, Dipl.HE, M.Eng. (Bidang Teknik Pertanian) Dr. Ir. Lily Montarcih L., M.Sc (Bidang Irigasi) Dr. Ir. Yanuar J. Purwanto, MS (Bidang Irigasi) Dr. Ir. Drs. Syamsuddin Mansyur, Dipl. HE (Bidang Irigasi) Dr. Ir. Yadi Suryadi, MT (Bidang Irigasi) Ir. Rizal Siregar, M.Sc (Bidang irigasi) Drs. Waluyo Hatmoko, M.Sc (Bidang Teknik Konservasi & Tata Air) Ir. Sukrasno, Dipl. HE (Bidang Irigasi) Lasino, ST (APU) (Bidang Teknologi Bahan) Redaktur Marasi Deon Joubert, ST, MPSDA (Bidang Irigasi) Dewan Penyunting Joko Triyono, STP, M.Eng (Bidang Irigasi) Dadang Ridwan, ST, MPSDA (Bidang Irigasi) Aditya Prihantoko, ST, MT (Bidang Irigasi) Hanhan A. Sofiyuddin, STP, M. Agr. (Bidang Irigasi & Teknologi Pertanian) Sekretariat Redaksi Midiah Sulastry Abubakar, ST Widya Utaminingsih, SP Dadan Rahmandani, ST N. Dedah Jubaedah Jurnal Irigasi diterbitkan oleh Balai Irigasi, Puslitbang SDA, Badan Litbang, Kementerian Pekerjaan Umum Alamat Redaksi/Penerbit : Balai Irigasi, Puslitbang SDA, Badan Litbang, Kementerian Pekerjaan Umum Jl. Cut Meutia, Kotak Pos 147 Bekasi 17113 Telp. : 021-8801365, 8801345, Fax. : 021-8801345, Email :
[email protected]
ISSN : 1907-5545
IRRIGATION JOURNAL This abstract sheet may be reproduce without permission charge
UDC : 626.8 Iskandar A. Yusuf REVIEW OF WATER QUALITY CRITERIA FOR IRRIGATION Abstract Government Regulation No. 82 year 2001 regarding Water Quality and Water Pollution Control containing water quality criteria based on water quality classes, so water quality objectives with the wide range utilization become less specific then the quality of the irrigation raw water must meet class II, class III and class IV. On the other hand, the need of water for agricultural irrigation sector is a very large ammount and their needs is getting increase in line with population growth, while the availability of water is on the wane and more aggravated due to the presence of an increasingly severe pollution. Therefore, to meet the needs of large amounts of water with good quality increasingly difficult. It is very burdensome of raw water providers, “what the water quality criteria is needed for irrigation ? “ Based on the analysis of benchmarking several references and then to compose a propose of irrigation water quality criteria. Furthermore, evaluating water quality data of raw water irrigation in Walahar weir of Citarum River-Karawang, Pamarayan weir of Ciujung River-Serang and irrigation canal in Garang River Semarang. Based on the propose of water irrigation criteria resulted in good and very good classification, however, based on class II of water quality criteria resulted not suitable classification, however, it has good productivity that higher then the national average productivity. Indeed, the water quality criteria of Government Regulation No. 82 year 2001 is still prevailed for water quality standards determination and water quality objective standards is set up by other relevant regulations such as: Regulation of Government/Governor/Mayor based on their obligation. Key Word: water quality standards, irrigation, water quality =============================================== UDC : 626.8 Andi Sulistiono, Dadan Rahmandani, Joko Triyono LAMONG DAM SIMULATION OF OPERATION FOR RAW WATER AND IRRIGATION Abstract Lamong River Basin is located in the Lamongan and Mojokerto Regency for the upstream part, Gresik Regency and Surabaya City for the downstream part. Lamong River Basin has area about ± 720 km2 with the main river channel has length about ± 103 km. Hydrological condition of Lamong River Basin is critical, as a result, most part of the Lamong River Basin that located in the region of Gresik and Surabaya Regency, every year is suffering from flooding due to overflowing. By contrast, in the upstream of Lamong River Basin is always shortage of water in the dry season. In the study, inflow discharge of Lamong Reservoir are obtained by synthetic streamflow data generation using Thomas Fiering method. Historical flow data are obtained by transforming rain data into discharge data using Mock model and using rainfall data of Ngimbang Station, Bluluk Station and Mantup Station and also discharge measurement data of Boboh Station in 1995-1997. The calculation of raw water demand is based on a standard requirement of raw water from Directorate General Human Settlements, Ministry of Public
Works in 2003, while the irrigation water requirement is calculated by Standard Irrigation Planning (KP-01) in 1986. Simulations are conducted from the year of 2016 to 2025 with the use of Standard Operating Rule (SOR).The results show that the needs of raw water by people served by the Lamong Reservoir is equal to 5,70 million m3 in 2015 and 5,74 million m3 in 2025. Reliability of Lamong Reservoir in serving the needs of raw water will be achieved 99,17 % by the planting area covering 2.117 Ha with irrigation water reliability in serving 96,25 %. Kata kunci: Model Mock, Thomas Fiering, Reliabilitas, Standard Operating Rule =============================================== UDC : 626.8 Chusnul Arif, Budi Indra Setiawan, Masaru Mizoguchi DETERMINING OPTIMAL SOIL MOISTURE FOR SYSTEM OF RICE INTENSIFICATION PADDY FIELD USING GENETIC ALGORITHMS Abstract In this study, an optimal soil moisture level that maximizes both yield and water productivity of system of rice intensification (SRI) paddy field was simulated by genetic algorithms (GA) model. The GA model was performed to find an optimal combination of soil moisture levels according to the empirical data during three cropping seasons at Nusantara Organic SRI Center (NOSC), Nagrak Sukabumi, West Java. Here, we classified soil moisture level into three levels i.e. wet (W), medium (M) or dry (D) based on the soil water retention curve. As the results, the optimal soil moisture was a combination of wet, wet, medium, and dry levels of soil moisture for initial, crop development, midseason and late season growth stages, respectively. The wet level in the initial and crop development growth stages should be achieved providing enough water for the plant to develop root, stem and tiller, and then the field can be drained into the medium level with the irrigation threshold of field capacity to avoid spikelet sterility in the mid-season stage, and finally, let the field in the dry level to save more water in the late season stage when plant water requirement is minimum. By this scenario, it was simulated that the yield can be increased up to 4.40% and water productivity up to 8.40% with saving water up to 12.28% compared to the empirical data. Keywords: genetic algorithms, non-flooded irrigation, system of rice intensification (SRI), water productivity, water saving =============================================== UDC : 626.8 Dian Noorvy Khaerudin, Denik Sri Krisnayanti THE APPLICATION OF MIXER CHANNEL FOR FISH POND IRRIGATION SYSTEM Abstract Indonesia as an agricultural country has a plan in food endurance . Food endurance is also a goal of the MDG 's 2015 Millennium Development Goals were made at Indonesian food resilience into national strategic issues . Indonesia has potential for abundant natural resources , including water resources and fisheries . The types of fish is a source of protein for the body and it plays an important role in improving the nutritional well-being in terms of public health
. Brackish water fishery developed are milk fish and shrimp . Sidoarjo district has a regional commodity and smoked milkfish. So most people in Sidoarjo district has these fisheries . But more and more reduced because in addition to its water quality is not maintained as well as irrigation systems are still not organized . The irrigation system is important because with this system of distribution of water activities , prepare pattern of planting , fertilization fish , enlargement , to marketing can work well . Mixer Channel brackish water is a mixture of fresh water and sea water with the required water quality. The problem tertiary channels that directly relate to the primary channel , and can not provide the required water quality ponds . The purpose of making the mixer channel are application the mixer channel for water quality of salinity that available for fish pond and addressing water quality problems that affect the productivity of the farm , and run the irrigation system , water distribution , so organized and structured . And mixer channel with sluice gate will be effective as to split water bearer channel to channel tertiary pond. Keywords: farm irrigation systems, mixer channel, primary channel, sluice gate, the water brackfish =============================================== UDC : 626.8 Helena Novitasari Lasol, Yuli Suharnoto, Dadang Ridwan, Marasi Deon J PERFORMANCE EVALUATION OF SPRINKLER IRRIGATON BY HYDRAULIC SIMULATION USING EPANET 2.0 Abstract Sprinkler irrigation network could be a good investment when designed, installed, maintained and managed well. But manually calculation consumes much time and gives rise to human error. Therefore, this study aims to evaluate the performance of sprinkler irrigation using secondary data and the data was analyzed by using simulation of EPANET 2.0 software. This study was conducted on irrigation network in the village of Tenilo, Gorontalo and the villages of Akar-akar, NTB. The simulation resulted the average pressure at both locations was excess of the recommended optimum pressure 40 m, but it was not excess the maximum recommended pressure 65 m. The variation pressure on each location were 2.82 m and 9.35 m. Debit issued by sprinkler was also nearing discharge plan 9.11 liters/second. The velocity of the flow both locations was not different much. It was less than maximum allowable speed 3 m/s, it meant that the network was safe from abrasion and water hammer on a pipe. Based on the results, simulation sprinkler irrigation network installed in the village of Tenilo and the villages of Akar-akar have met the criteria of hydraulic limitation design of sprinkler irrigation. Keywords: discharge, EPANET 2.0, sprinkle irrigation, velocity, pressure =============================================== UDC : 626.8 Reskiana, Budi Indra Setiawan, Satyanto K. Saptomo, Popi Redjekiningrum, Dwi Mustatiningsih PERFORMANCE ANALYZE OF RING-SHAPE EMITTER Abstract Water scarcity causes the utilization of dryland is not maximal in supporting agricultural production in Indonesia. Efficient irrigation technology which is economically affordable by farmers needs to develop. This research aimed to provide an irrigation ring typed emitter that can be placed under the soil
surface. In this research, porous materials made of textiles were tested for its permeability that matches the permeability of the soil. We got 5 textiles made of Legacy having permeability of 1.54 cm h-1, Colosal 0.76 cm h-1, Veronica 8.16 cm h-1, Kyramat 5.28 cmh-1, and Parasut 0.06 cmh-1. This selected textile was rolled covering a ring typed perforated water hos (ring emitter). These emitters were then tested to irrigate potted water melon plants in a greenhouse. The results show ring emitters covered with Legacy and Colossal have better water productivity, 0.64 kg m-3 and 1.90 kg m-3, respectively with the averaged water discharge 0.52 l h-1 and 1.08 l h-1. water productivity, sub-surface irrigation, ring irrigation =============================================== Keywords:
UDC : 626.8 Dadan Rahmandani, Joko Triyono, Dadang Ridwan IRRIGATION PIPE LINE DESIGN ON FLAT LAND (CASE STUDY: PASIR SALAM 3 KIRI TERTIERY, PANULISAN IRRIGATION AREA, CILACAP) Abstract The main problem of the application of pressurized pipe irrigation on flat land is not enough energy, so it may cause problem during the operation of the network. Basically, the flow in the pipe can be designed as open flow, so energy requirement can be reduced. However, the application of pipe irrigation system has not been widely studied so it can not be applied to the field scale. This study aims to create a network of pipe irrigation design by gravity with open flow. The research was done by designing pipe irrigation on flat land in Pasir Salam 3 kiri tertiary area. Afterwards the analysis and evaluation of the design requirements was performed in order to get technical feasibility of implementation. As the results, the diameter of the primary pipelines ranging from 8 inches (200 mm) to 10 inches (250 mm) at a flow rate of 0.35 m/s to 0.50 m/s. While the diameter of the secondary and tertiary pipelines between 1 inch (25 mm) to 6 inches (150 mm) with a flow velocity of 0.25 m/s to 0.46 m/s. These results indicate that the design of the application of irrigation pipe networks on flat land in Pasir Salam 3 kiri tertiary area in the Panulisan Irrigation Area was technically feasible considering the results of hydraulic calculation. Thus the water can flow by gravity at velocity ranging from 0.25 to 0.5 m/s and energy availability 0.09 m larger than requirement . Keywords: pipe irrigation, flat land, open flow =============================================== UDC : 626.8 Endang Purnama Dewi, M.Yanuar J Purwanto, Asep Sapei REGIONAL DEVELOPMENT SCENARIO BASED ON IRRIGATION SYSTEM (CASE STUDY: CIHEA IRRIGATION SYSTEM OF CIANJUR DISTRICT) Abstract Regional development is targeted to make better growth in the rural area, by improving farmer’s welfare and minimizing the gap among the regions. In particular, the developement aims to increase farmers income percapita as an income indicators of development in rural area. In the irrigation area, the regional development can also increase the domestic revenue by providing value added program in this region. The existing regional plan (RTRW) of Cianjur in 2013 –2031 a part of the study area (Cihea irrigation system) are planned to be converted in to industrial area, it reaches 4209.903 ha.
This research aims to provide an irrigation system based development strategy for guiding to the implementation of the RTRW. In the irrigation system, there are water resources and agricultural activities, mostly in food comodities. These resources will be considered in the study in order to achieve the target of rural development as for the implemention of RTRW. In this research, it analyzed supply and demand of irrigation, based on water balance calculation and farm production, the prospective industrial area in the region for processing the raw product of farming. As the result, the agricultural land convertion should be targeted into processing plant for rice. By these scenarios, the water resources were able to irrigate area of 5.484 ha with cropping pattern of rice-rice -secondary foodcrop as the minimum discharge occured in September its about 0.553 m3/second. The total production of this raw agricultural product can be processed to rice snack and cereal beside of rice, thus being able to gave rise in income of farmer to Rp 2.461.706,00 per planting season. Based on spatial analyze, the area which is can be developed are Ciranjang, Sukaratu, Sindangjaya, Mekargalih, Bojongpicung, Kertajaya, dan Cibiuk. Keywords: regional developement,converted irrigation of Cihea, percapita income
land,
=============================================== UDC : 626.8 Dadang Ridwan, Alfi Bagus Prasetyo, Marasi Deon Joubert MICRO IRRIGATION NETWORK DESIGN TYPE OF MINI SPRINKLERS (CASE IN EXPERIMENTAL STATION FOR IRRIGATION OUTDOOR LABORATORY) Abstract Increasing of land use changing causes more limited agricultural land. Micro irrigation is one of the solutions to increase agricultural productivity on a limited land. This study aims to design a micro irrigation system using mini-sprinkler in limited area of outdoor laboratory in Experimental Station of Irrigation, Bekasi. The plant will be cultivated is tomato. The results of design calculations obtained micro sprinkler type that will be used is HADAR 7110 Inverted Rotor as much as 12 units, wetting diameter of 10.2 m, the distance between the lateral and sprinkler 5 m x 5 m.. rrigation water requirement is 26.25 mm/ application. Time of the maximum irrigation is 5.13 hours, with the maximum irrigation interval is 5 days. Total dynamic head (TDH) required is 28.66 m. Considering to fulfillment greater requirement, the selected pump will be has a 0.25 KW BHP, discharge 1,25 liter/second, with total head of 60 m.. Schedule of irrigation water supply is designed based on the needs of water per growth period between 2.22 to 5.07 hours with an interval of 3-5 days. Keywords : micro irrigation, irrigation interval, headloss, mini sprinklers
For wide area the automatic irrigation system a use wireless sensor network system (WSN). The advantages of this system such as easy data download and the device is easy to install so the user will convenient to monitoring the entire irrigated area. In this research, XBee / XBee pro was used as wireless system devices with radio communication system and GSM modem device for SMS communication system. The objective of this research is to improve the efficiency of irrigation systems for wireless control. The benefits of this study is to provide an alternative automatic irrigation system for the region with limited water availability because the system is able to regulate irrigation water allocation according to crop needs (efficiency of irrigation water use) Keywords: irrigation, automatic control, wireless system, short message service (sms) =============================================== UDC : 626.8 Murtiningrum, Suci Ristiana, Yuli Wahyuningtyas FORMULATION OF WUA EMPOWERMENT STRATEGIES TO IMPROVE PARTICIPATION IN THE O&M OF IRRIGATION SYSTEM MAIN NETWORK Abstract It is possible for farmers, through Federation of Water Users’ Association (WUAF), as direct users to participate in the management of the irrigation system main network. The government of Yogyakarta Special Region (DIY) encourages WUAF to participate in the main network management so farmers understand the system comprehensively so that irrigation will be better managed and sustainably. This paper aimed to assess WUAF participation in irrigation system management as well as to identify factors influenced the participation level and to formulate strategies to improve WUAF participation. Based on their performances, WUAFs were clustered into three clusters, namely cluster 1 for WUAFs with good performance in all aspects, cluster 2 for WUAFs with financial weakness, and cluster 3 for WUAFs financial and institutional weaknesses. Strategy proposed for cluster 1 was minor government intervention to maintain WUAFs performance. Strategy proposed for cluster 2 and cluster 3 was pursuing independent funding source. Additional strategy for cluster 3 was institution strengthening through routine meetings and field workers. General strategies applicable for all clusters were improvement of WUAF role in the management of main network supported with appropriate training and selection of high-value agricultural commodities. Keywords: empowerment, assessment, participation, operation and maintenance, SWOT analysis, quadran analysis =============================================== UDC : 626.8 Mulyadi, Indratmo Soekarno, Suardi Natasaputra
UDC : 626.8
IRRIGATION PERFORMANCE ASSESSMENT BY PERMEN PU NO.32/2007 AND MASSCOTE METHODE APPROACH WITH RAPID APPRAISAL PROCEDURE (RAP) EVALUATION AT BARUGBUG IRRIGATION AREA - WEST JAVA
Wiranto, Budi Indra Setiawan, Satyanto Krido Saptomo
Abstract
WIRELESS AUTOMATIC CONTROL IRRIGATION SYSTEM
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
===============================================
Abstract Irrigation water provides on agricultural land should be used optimally, that automatic irrigation system that is able to provide crop water with the expected conditions are needed.
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%. Keywords: Irrigation System Performance, MASSCOTE, Permen PU 32/2007, Rapid Appraisal Procedure (RAP), Path Analysis ===============================================
ISSN : 1907-5545 Terakreditasi - Sertifikat Kepala P2MI-LIPI Nomor : 417/AU/P2MI-LIPI/04/2012
JURNAL
IRIGASI Vol.9 No.2, Oktober 2014
Halaman DAFTAR ISI
i
EDITORIAL
ii
DESAIN JARINGAN IRIGASI PIPA PADA LAHAN DATAR (STUDI KASUS : PETAK TERSIER PASIR SALAM 3 KIRI, DAERAH IRIGASI PANULISAN – CILACAP) IRRIGATION PIPE LINE DESIGN ON FLAT LAND (CASE STUDY: PASIR SALAM 3 KIRI TERTIERY, PANULISAN IRRIGATION AREA, CILACAP) Oleh : Dadan Rahmandani, Joko Triyono, Dadang Ridwan
75 - 85
SKENARIO PENGEMBANGAN WILAYAH BERBASIS DAERAH IRIGASI (STUDI KASUS : DI CIHEA KABUPATEN CIANJUR) REGIONAL DEVELOPMENT SCENARIO BASED ON IRRIGATION SYSTEM (CASE STUDY: CIHEA IRRIGATION SYSTEM OF CIANJUR DISTRICT) Oleh : Endang Purnama Dewi, M.Yanuar J Purwanto, Asep Sapei
86 – 95
DESAIN JARINGAN IRIGASI MIKRO JENIS MINI SPRINKLER (KASUS DI LABORATORIUM OUTDOOR BALAI IRIGASI) MICRO IRRIGATION NETWORK DESIGN TYPE OF MINI SPRINKLERS (CASE IN EXPERIMENTAL STATION FOR IRRIGATION OUTDOOR LABORATORY) Oleh : Dadang Ridwan, Alfi Bagus Prasetyo, Marasi Deon Joubert
96 – 107
SISTEM KONTROL IRIGASI OTOMATIS NIRKABEL (WIRELESS AUTOMATIC CONTROL IRRIGATION SYSTEM) Oleh : Wiranto, Budi Indra Setiawan, Satyanto Krido Saptomo
108 – 114
PENYUSUNAN STRATEGI PEMBERDAYAAN GP3A UNTUK PENINGKATAN PARTISIPASI PADA O&P JARINGAN UTAMA SISTEM IRIGASI (FORMULATION OF WUA EMPOWERMENT STRATEGIES TO IMPROVE PARTICIPATION IN THE O & M OF IRRIGATION SYSTEM MAIN NETWORK) Oleh : Murtiningrum, Suci Ristiana, Yuli Wahyuningtyas
115 – 125
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 IRRIGATION PERFORMANCE ASSESSMENT BY PERMEN PU NO.32/2007 AND MASSCOTE METHODE APPROACH WITH RAPID APPRAISAL PROCEDURE (RAP) EVALUATION AT BARUGBUG IRRIGATION AREA WEST JAVA Oleh : Mulyadi, Indratmo Soekarno, Suardi Natasaputra
126 - 135
Jurnal Irigasi – Vol. 9, No. 2, Oktober 2014
i
Jurnal Irigasi merupakan publikasi ilmiah yang memuat hasil-hasil penelitian, pengembangan, kajian atau gagasan dalam bidang ke-irigasi-an. Terbit pertama kali tahun 1986 dengan nama Jurnal Informasi Teknik dan tahun 2006 berganti nama menjadi Jurnal Irigasi yang diterbitkan 2 (dua) kali setahun yaitu pada bulan Mei dan Oktober. Jurnal Irigasi terbuka untuk umum, peneliti, akademisi, praktisi dan pemerhati masalah irigasi. Dengan komitmen terus menjaga dan meningkatkan kualitas dalam setiap terbitannya, Jurnal Irigasi kini hadir dalam ukuran A4 (210 x 297 mm) sesuai dengan ketentuan pedoman akreditasi majalah ilmiah yang diterbitkan oleh LIPI. Edisi kali ini dimulai dengan pembahasan mengenai desain jaringan irigasi pipa pada lahan datar, studi kasus: Petak Tersier Pasir Salam 3 Kiri, Daerah Irigasi Panulisan – Cilacap. Penggunaan pipa sebagai saluran tertutup di bidang irigasi dewasa ini banyak diterapkan di berbagai negara termasuk di Indonesia, namun kenyataan di lapangan, penerapan sistem ini sangat bergantung pada ketersediaan tinggi energi guna mencegah pengendapan partikel padat (sedimentasi). Pada dasarnya aliran dalam pipa dapat diciptakan terbuka (tidak penuh), sehingga sifat dan karakteristik aliran dapat disamakan seperti aliran pada saluran terbuka. Dengan sifat dan karakteristik aliran terbuka, diharapkan irigasi pipa tidak memerlukan tinggi energi besar, sehingga aliran yang terjadi dapat mengalirkan air irigasi sesuai dengan kebutuhan tanpa terjadi efek negatif seperti sedimentasi. Pengembangan wilayah bertujuan untuk mendorong laju pertumbuhan suatu wilayah, dengan meningkatkan kesejahteraan petani dan mengurangi kesenjangan antar wilayah. Daerah Irigasi Cihea Kabupaten Cianjur sesuai dengan Rencana Tata Ruang Wilayah (RTRW) Kabupaten Cianjur tahun 2013 akan dijadikan sebagai daerah industri, hal tersebut akan berdampak terhadap penggunaan lahan yang sebagian besar adalah daerah pertanian. Oleh karena itu dibutuhkan kajian untuk menganalisis penggunaan lahan yang bisa dikembangkan namun tidak berdampak negatif terhadap daerah pertanian. Kajian didasarkan pada analisis spasial dengan metode overlay dan scoring faktor-faktor dalam menentukan lokasi kawasan pengembangan untuk industri. Meningkatnya alih fungsi lahan menyebabkan lahan pertanian semakin terbatas. Peningkatkan produktivitas hasil pertanian pada lahan yang terbatas dapat diatasi dengan penggunaan irigasi mikro. Irigasi mikro terdiri atas beberapa jenis antara lain irigasi tetes, irigasi subsurface, irigasi mini sprinklers dan mikro sprayer. Penggunaan sistem irigasi mikro dalam penerapannya tidak membutuhkan lahan yang besar, serta dapat memanfaatkan sumber air seadanya. Artikel ketiga edisi ini akan membahas mengenai desain jaringan irigasi mikro jenis mini sprinkler dalam skala laboratorium berdasarkan data hasil pengukuran luas lahan dengan menggunakan alat survey Real Time Kinematic (RTK) serta data klimatologi yang dihitung dengan bantuan Software Cropwat 8.0 serta Surfer 9. Irigasi merupakan segala kegiatan yang berhubungan dengan usaha mendapatkan air guna keperluan pertanian. Agar irigasi dapat dilakukan secara optimum maka perlu dibuat suatu sistem irigasi otomatis yang mampu menyediakan air untuk tanaman sesuai kondisi yang diharapkan. Penelitian mengenai sistem kontrol irigasi otomatis nirkabel diharapkan mampu mengatur pemberian air irigasi sesuai dengan kebutuhan tanaman (efisiensi air irigasi). Untuk area luas sistem irigasi otomatis dapat menggunakan Sistem Wireless Sensor Network (WSN). Kelebihan sistem ini diantaranya adalah kemudahan dalam proses instalasi perangkat serta kemudahan dalam mengunduh data sehingga monitoring seluruh kawasan irigasi dapat dilakukan dengan mudah. Pada penelitian ini digunakan perangkat Xbee/Xbee pro sebagai perangkat sistem nirkabel dengan sistem komunikasi gelombang radio dan perangkat modem GSM untuk sistem komunikasi SMS. Sebagai pengguna langsung irigasi di lapangan, petani melalui Gabungan Perkumpulan Petani Pemakai Air (GP3A) dimungkinkan untuk berpartisipasi pada pengelolaan jaringan utama sistem irigasi. Pemerintah Daerah Istimewa Yogyakarta (DIY) mendorong GP3A untuk berpartisipasi dalam pengelolaan jaringan utama agar petani lebih memahami sistem irigasi secara komprehensif sehingga pengelolaan jaringan irigasi lebih tertangani dan keberlanjutan irigasi dapat dicapai. Berdasarkan kinerjanya terdapat 3 kelompok GP3A yaitu Kluster 1 untuk GP3A dengan kinerja baik dan merata di semua aspek, Kluster 2 untuk GP3A dengan kelemahan aspek keuangan, dan Kluster 3 untuk GP3A dengan kelemahan aspek kelembagaan dan keuangan. Artikel terakhir edisi ini menyajikan penilaian kinerja pengelolaan sistem irigasi menggunakan metode MASSCOTE yang berbeda dengan Penilaian kinerja berdasarkan Permen PU No.32/2007. Kinerja irigasi menjadi suatu indikasi dalam rangka menggambarkan suatu pengelolaan sistem irigasi. Penilaian kinerja berdasarkan Permen PU No. 32/2007 dilakukan terhadap 6 (enam) parameter yaitu; prasarana fisik, produktivitas tanam, sarana penunjang, organisasi personalia, dokumentasi dan Perkumpulan Petani Pemakai Air (P3A), sedangkan pendekatan metode MASSCOTE dilakukan dengan Evaluasi Rapid Appraisal Procedure (RAP) yang merupakan seperangkat prosedur sistematis untuk mendiagnosa hambatan, kinerja dan tingkat layanan dalam sistem irigasi terhadap 4 (empat) indikator utama yaitu; indikator pelayanan, indikator P3A, indikator SDM operator, dan indikator modernisasi operasi saluran. Redaksi
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Jurnal Irigasi – Vol. 9, No. 2,Oktober 2014
