Optimation of Cropping Pattern and Irrigation Water Allocation Toward The Modernization of Ciliman Irrigation Area

Jurnal Irigasi

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Title Optimation of Cropping Pattern and Irrigation Water Allocation Toward The Modernization of Ciliman Irrigation Area
Optimasi Rencana Tanam dan Pemberian Air Irigasi menuju Modernisasi Irigasi di Daerah Irigasi Ciliman
 
Creator Susilowati, -
Utaminingsih, Widya
Ginting, Segel
 
Subject water allocation; irrigation; reliability; optimization; simulation
alokasi air; irigasi; keandalan; optimasi; simulasi
 
Description Development of an irrigation area were implemented to increase the productivity of agricultural products, especially rice and palawija (secondary crops commodities). The productivity of rice and palawija was influenced by irrigation performance, both by infrastructure and irrigation management. The operation management of irrigation network in Ciliman Irrigation Area is still not optimal due to the absence of an operations to regulate the amount of water that enters each tertiary intake causing excessive water intake upstream while shortage in the downstream. This is also exacerbated by the condition of water availability in the dry season which is lower compared to the need of irrigation water. Therefore, this research is conducted to optimize the cropping pattern and water allocation in Ciliman Irrigation Area by considering the reliability of irrigation water delivery. Research was conducted through water balance simulation according to several scenarios based on group division, changes in the planting schedules, and changes in planting area. Then, optimization of the cropping pattern was done by maximizing the reliability of irrigation water delivery. The recommended cropping pattern is 100% rice planted in planting season I, 100% rice planted in planting season II, and 27.47% palawija (soybean) planted in planting season III. Water delivery should be arranged into 3 groups with the 1st planting schedule starts in 1st period of November, 2nd planting season starts in 1st period of March, and 3rd planting season starts in 2nd period of July. With this scenario, there was an increase in the cropping index from the existing conditon of 199.7 (83% reliability) to 213.7 (100% reliability).
Pengembangan sebuah Daerah Irigasi (DI) dilakukan untuk meningkatkan produktivitas hasil pertanian khususnya komoditas padi dan palawija. Produktivitas padi dan palawija dipengaruhi oleh kinerja irigasi, baik itu infrastuktur maupun pengelolaan irigasi. Pengelolaan operasi jaringan irigasi di DI Ciliman masih belum optimal akibat tidak adanya operasi dalam mengatur jumlah air yang masuk di setiap sadap, sehingga menyebabkan air masuk berlebihan di hulu sedangkan di hilir sering kali tidak mendapatkan air. Hal ini diperparah dengan kondisi ketersediaan air pada musim kemarau yang lebih rendah dibandingkan dengan kebutuhan air irigasinya. Oleh karena itu, penelitian ini dilakukan untuk mengoptimasi rencana tata tanam dan alokasi air irigasi DI Ciliman dengan mempertimbangkan keandalan pemberian air. Penelitian dilakukan melalui simulasi neraca air pada beberapa skenario pembagian golongan, perubahan jadwal tanam, dan perubahan luasan tanam. Optimasi rencana tanam dilakukan dengan memaksimalkan keandalan pemberian air irigasi. Pola tanam yang direkomendasikan adalah 100% padi ditanam di musim tanam I, 100% padi ditanam di musim tanam II, dan 27,47% palawija (kedelai) ditanam di musim tanam III. Pemberian air dibagi menjadi 3 golongan dengan jadwal tanam untuk dimulai pada bulan November periode ke-1, musim tanam II dimulai pada Maret periode ke-1, dan musim tanam III dimulai pada bulan Juli periode ke-2. Dengan kenario ini, terjadi peningkatan indeks pertanaman dimana awalnya pada rencana tanam eksiting sebesar 199,7 (keandalan 83%) menjadi 213,7 (keandalan 100%).
 
Publisher Balai Teknik Irigasi
 
Contributor
Balai Teknik Irigasi
 
Date 2020-12-31
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion


 
Format application/pdf
 
Identifier http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/322
10.31028/ji.v15.i2.95-108
 
Source Jurnal Irigasi; Vol 15, No 2 (2020): Jurnal Irigasi; 95-108
Jurnal Irigasi; Vol 15, No 2 (2020): Jurnal Irigasi; 95-108
2615-4277
1907-5545
 
Language ind
 
Relation http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/322/422
 
Rights Hak Cipta (c) 2020 Jurnal Irigasi
 

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