Optimization of A Dynamic Program for Water Resources Utilization in the Mambal Irrigation Area

https://doi.org/10.22146/agritech.83467

Mawiti Infantri Yekti(1*), I Gusti Agung Adnyana Putera(2), Made Mahat Budhi Adnyana(3)

(1) Study Program of Civil Engineering, Faculty of Engineering, Yogyakarta State University, Kampus Karangmalang, Yogyakarta, 55281
(2) Study Program of Master Civil Engineering, Faculty of Engineering, Udayana University, Jl. P. B. Sudirman, Denpasar, Bali 80232
(3) Study Program of Master Civil Engineering, Faculty of Engineering, Udayana University, Jl. P. B. Sudirman, Denpasar, Bali 80232
(*) Corresponding Author

Abstract


The Irrigation Area (D. I.) Mambal, which passes through Badung Regency, Denpasar City, and Tabanan Regency, is the largest irrigation water supplied by the Ayung River, covering an area of 5.963 Ha. Despite the Ayung River’s substantial water potential, the D. I. Mambal experiences water shortages during certain months. This research aims to improve the effectiveness and efficiency of irrigation water use based on the Global Planting Management Plan (RTTG) using simulation methods and dynamic program optimization. Simulations were carried out under low conditions, normal and sufficient dependable discharges, using both existing and alternative RTTG. The objective function of the dynamic optimization seeks to maximize revenue gain from the applied RTTG. The existing cropping pattern at the beginning of planting in October showed an average proportion of fulfillment of water irrigation needs at 85%. Under the Alternative I condition, with planting beginning in November, the average proportion of fulfillment of irrigation water needs was 89%. In Alternative II conditions, with planting beginning in December, the average proportion of fulfillment of irrigation water needs was 87%. By optimizing the water discharge using the dynamic program, the irrigation profit for the existing cropping pattern (October) amounted to IDR 491,816,154,938. The highest profit was obtained using the Alternative II cropping pattern (December), totaling IDR 606,675,369,830. Meanwhile, the lowest profit was obtained in the Alternative I cropping pattern (November), which was IDR 360,767,292,361. The analysis showed that the Alternative II cropping pattern, starting with the first rice planting period in December, yields the most optimal results. The analysis considers the optimized air allocation and irrigation benefits obtained from the third cropping pattern.


Keywords


Dynamic program; irrigation; maximum profit; optimization

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References

Anggraheni, D., Jayadi, R., & Istiarto, I. (2018). Evaluasi Kinerja Pola Operasi Waduk (POW) Wonogiri 2014. Teknisia, 22(1 SE-Articles), 294–306. https://journal.uii.ac.id/teknisia/article/view/9053

Anton, P. (2014). Analisis Kebutuhan Air Irigasi (Studi Kasus Pada Daerah Irigasi Sungai Air Keban Daerah Kabupaten Empat Lawang). Jurnal Teknik Sipil dan Lingkungan, 2(3), 1–14.

Dewi, N. L. A. N. S., Tamba, I. M., & Lestari, P. F. K. (2017). Kinerja Usaha Tani Padi Sawah (Kasus Subak Mambal, Kecamatan Abian Semal). Agrimeta, 7(13).

Dyolaksti, F. S. (2020). Optimasi Pemberian Air Irigasi Dengan Program Dinamik (Studi Kasus : Daerah Irigasi Candilimo Kabupaten Mojokerto Provinsi Jawa Timur) [Institut Teknologi Bandung.]. https://digilib.itb.ac.id/gdl/view/71278

Hoesein, A. A., Suparmanto, J., & P. R., S. S. (2012). Optimasi Irigasi dengan Program Dinamik di Metro Hilir. Jurnal Teknik Pengairan: Journal of Water Resources Engineering, 1(2 SE-Articles). https://jurnalpengairan.ub.ac.id/index.php/jtp/article/view/114

Imron, F., Murtiningrum, M., & Arif, S. S. (2022). Analisis Kesiapan Modernisasi Irigasi dan Optimasi Alokasi Air Irigasi pada Daerah Irigasi Belitang. AgriTECH, 42(4), 329. https://doi.org/10.22146/agritech.67203

Limantara, L. M., & Soetopo, W. (2020). Manajemen Air (Water Management). Penerbit Andi. https://books.google.co.id/books?id=0xQQEAAAQBAJ

Linsley, R. K., Kohler, M. A., & Paulhus, J. L. H. (1996). Hidrologi untuk Insinyur Edisi Ketiga. Erlangga. https://cir.nii.ac.jp/crid/1130000796840241024.bib?lang=en

Nalurita, S., Limantara, L. M., & Prayogo, T. B. (2017). Studi Optimasi Distribusi Air Irigasi pada Daerah Irigasi Tengoro Kabupaten Banyuwangi dengan Program Dinamik Stokastik. Jurnal Teknik Pengairan: Journal of Water Resources Engineering, 8(1 SE-Articles), 72–78. https://jurnalpengairan.ub.ac.id/index.php/jtp/article/view/309

Namput, V. M., Tamba, I. M., & Budiasa, M. (2020). Analisis Keuntungan Jagung Manis di Subak Mambal Kecamatan Abiansemal Kabupaten Badung. AGRIMETA : Jurnal Pertanian Berbasis Keseimbangan Ekosistem, 10(19 SE-Articles). https://e-journal.unmas.ac.id/index.php/agrimeta/article/view/784

Ritonga, A. S. (2016). Penerapan Program Dinamis untuk Simulasi Perencanaan Pola Tanam. Jurnal Ilmu-Ilmu Teknik Sistem, 11(2), 1–11.

Rosidi, M. (2019). Metode Numerik Menggunakan R untuk Teknik Lingkungan. 300. https://bookdown.org/moh_rosidi2610/Metode_Numerik/

Septiadi, D., & Nursan, M. (2021). Optimasi Produksi Usaha Tani Sebagai Upaya Peningkatan Pendapatan Petani Sayuran Di Kota Mataram. Agrifo : Jurnal Agribisnis Universitas Malikussaleh, 5(2), 87. https://doi.org/10.29103/ag.v5i2.3489

Yekti, M. I. (2017). Role of Reservoir Operation in Sustainable Water Supply to Subak Irrigation Schemes in Yeh Ho River Basin. In CRC Press/Balkema. https://doi.org/10.1201/9781315116310



DOI: https://doi.org/10.22146/agritech.83467

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