PERENCANAAN POLA TANAM PADA JARINGAN IRIGASI GANGSIRAN DESA TEBEL KABUPATEN JOMBANG
Abstract
Abstract
The availability ofiwateriin the jombang area tends to be uneven because it is influenced by the rain and dry season. This makes the implementation of the cropping pattern in the village of Tebel Bareng district not in accordance with the available water availability, to obtain maximum production a goog irrigation system management is required. By conducting an analysis to determine the value of the monthly reliable discharge with the transformation of monthly rainfall data, water requirements and cropping patterns are expectedito be able to overcome problems that occur in the existing irrigation network in Tebel village Bareng sub-district Jombang district. To find out the average rainfalliusingitheialgebraic averageimethod with 10 years of rainfall data, then to find out the evapotranspiration is calculated using the penman method and reliable discharge calculations using the FJ Mock method. From the results of the analysis on the village irrigation in Tebel the reliable discharge value is 0,0165 m³/sec. Analysis of rrigation water needs was carried out using 24 alternatives. TheiNFR value of 88,29 mm/day was converted to 0,001021875 m³/sec or 10,022 l/sec. The alternative used is the 24 th alternative with the initial planting period in December II period. The cropping pettern used is paddy-paddy-secondary crops.
Abstrak
Ketersediaan air didaerah jombang cenderung tidak merata karena dipengaruhi oleh musim hujan dan kemarau. Hal itu membuat pelaksanaan pola tanam di desa Tebel Kecamatan Bareng tidak sesuai dengan ketersediaan air yang ada, sehinga untuk mendapatkan hasil produksi yang maksimal diperlukan sebuah pengelolahan sistem irigasi yang baik. Dengan melakukan analisis untuk mengetahui nilai debit andalan bulanan dengan transformasi data curah hujan bulanan, kebutuhan air dan pola tata tanam diharapkan mampu mengatasi masalah yang terjadi pada jaringan irigasi yang ada di Desa Tebal Kecamatan Bareng Kabupaten Jombang. Untuk mengetahui curah hujan rata-rata menggunakan metode rata-rata aljabar dengan data curah hujan 10 tahun, lalu untuk mengetahui evapotranspirasi dihitung menggunakan metode penman dan perhitungan debit andalan diperoleh dengan menggunakan metode FJ. Mock. Dari hasil analisis pada daerah irigasi desa Tebel diperoleh nilai debit andalan sebesar 0,0165 m³/detik. Analisis kebutuhan air irigasi dilakukan menggunakan 24ialternatif Didapat nilai NFR sebesar 88,29 mm/hari dikonversikan menjadi 0,001021875 m³/detik atau 10,022 lt/detik. Alternatifiyang digunakan adalah alternatifike 24 dengan masa awal tanam pada Desember priode II. Pola tanam yang digunakan adalah padi-padi-palawija.
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References
Adimas Dwi Cahyono Raharjo, 2020. Optimalisas Pola Tata Tanam Di Petak Sawah Desa Panarukan Kabupaten Malang Jawa Timur. Universitas 17 Agustus 1945 Surabaya.
Direktorat Jenderal Pengairan, 1986. Standar Perencanaan Irigasi (KP-01). Jakarta.
Muhammad Saiful Hadi, 2020. Optimalisasi Saluran Irigasi Berdasar Pola Tata Tanam Pada Petak Sawah Di Desa Kebondalem Kecamatan Bareng Kabupaten JombangiJawa Timur. Universitas 17 Agustus 1945 Surabaya.
Soemartono, CD. 1999. Hidrologi Teknik. Jakarta: Edisi Dua Erlangga. Sk.
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