EVALUASI SISTEM PEMBERIAN AIR DAERAH IRIGASI KEDUNG PUTRI GUNA MENINGKATKAN INTENSITAS TANAM PADI

Isna Dinul Muiz, Donny Harisuseno, Runi Asmaranto
unpublished
ABSTRAK : Pada musim kemarau DI. Kedungputri mengalami kekeringan terutama pada daerah bagian hilir. Intensitas tanam pada kondisi eksistingpun kurang maksimal. Penelitian ini bertujuan untuk mengevaluasi intensitas tanam serta kebutuhn air irigasi di DI. Kedungputri. Dari hasil evaluasi, membuat rencana pola tanam dengan meningkatkan intensitas tanam padi serta menghitung kebutuhan air. Pada kajian ini menggunakan metode SCH (Stagnant Constant Head) dan metode SRI (Sytem of Rice
more » ... Rice Intensification). Intensitas tanam rerata padi gadu tidak ijin mencapai 73,05% pada tahun 2009-2014. Metode SRI lebih hemat air 68,55 %-75,45% dibandingkan metode SCH. Apabila menggunakan metode SCH, pemberian air secara gilir mencapai 83,33%. Metode SRI dapat meningkatkan pendapatan petani dari hasil produksi gabah kering yaitu 180,52%. Kata Kunci : Daerah Irigasi Kedung Putri, intensitas tanam, metode SCH, metode SRI, pembagian air, rotasi. ABSTRAC : In dry season Kedungputri irrigation area often lack of water especially in areas downstream. Cropping intensity on existing conditions deemed less than the maximum.This study aimed to evaluate the intensity of cropping and requirement of irrigation in irrigation area of Kedungputri. From the results of evaluations that had been done, then created a new plan cropping patterns by increasing paddy cropping intensity and calculated water needs and water distribution when needed.In this study, the author used two methods of irrigation, i.e. SCH (Stagnant Constant Head) known by constant supply of water to crops and periodically supply of water to crop or known by SRI (System of Rice Intensification).Gadu paddy cultivation did not permit the average cropping intensity reached 73.05% in 2009-2014. The SRI method is 77.21% more water-efficient than the method SCH.The supplied of water in cultivation periodically reached 83.33%.In addition to saving water, the SRI method can increase farmer's income from the production of dried grain which reached 150,82%
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