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    Penentuan Nilai Evapotranspirasi Dan Koefisien Tanaman Beberapa Varietas Padi Unggul Di Rumah Kaca Fakultas Pertanian Universitas Sumatera Utara

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    Date
    2017-02-21
    Author
    Sajiwo, Indi
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    Abstract
    Kebutuhan air areal tanaman padi meliputi penjenuhan, perkolasi, penggenangan dan evapotranspirasi. Besarnya nilai evapotranspirasi dapat ditentukan berdasarkan nilai evaporasi potensial dan nilai koefisien tanaman padi untuk setiap periode pertumbuhannya. Penelitian ini bertujuan untuk menentukan Evapotranspirasi dan Nilai Koefisien Tanaman Padi Situ Bagendit, Ciherang dan Makongga Di Rumah Kaca. Hasil penelitian menunjukkan besar nilai Evapotranspirasi tanaman padi pada varietas Situ Bagendit, Ciherang dan Makongga yaitu pada fase vegetatif 1,68 mm/hari, 1,68 mm/hari dan 1,69 mm/hari, fase reproduktif 1,83 mm/hari, 1,72 mm/hari dan 1,76 mm/hari, fase pemasakan 1,71 mm/hari, 1,69 mm/hari dan 1,70 mm/hari. Nilai koefisien tanaman padi pada varietas Situ Bagendit, Ciherang dan Makongga yaitu pada fase vegetatif 1,20 mm/hari, 1,20 mm/hari dan 1,21 mm/hari, fase reproduktif 1,14 mm/hari, 1,07 mm/hari dan 1,08 mm/hari, fase pemasakan 1,05 mm/hari, 1,03 mm/hari dan 1,05 mm/hari. Varietas Ciherang memiliki nilai produksi bulir padi yang lebih tinggi dibandingkan dengan varietas Situ Bagendit dan Makongga. Produktivitas bulir padi untuk varietas Situ Bagnedit 102,81 g, varietas Ciherang 125,16 g dan varietas Makongga 94,48 g.
     
    The water requirement of rice crop is compose of saturation, percolation, flooding and evapotranspiration. The amount of evapotranspiration can be determined based on the value of potential evaporation and the rice crop coefficient values for each period of growth. This study was aimed to assess the value Evapotranspiration and coefficient of Situ Bagendit, Ciherang and Mankongga Variety In Green house. The results showed that the value of the evapotranspiration varieties of rice plants in Situ Bagendit, Ciherang and Makongga was the vegetative phase 1,68 mm/hari,1,68 mm/hari and 1,69 mm/hari, reproductive phase 1,83 mm/hari, 1,72 mm/hari and 1,76 mm/hari, the phase of ripening 1,71 mm/hari, 1,69 mm/hari and 1,70 mm/hari. The coefficient varieties of rice plants in Situ Bagendit, Ciherang and Makongga was the vegetative phase 1,20 mm/hari,1,20 mm/hari and 1,21 mm/hari, reproductive phase 1,14 mm/hari, 1,07 mm/hari and 1,08 mm/hari, the phase of ripening 1,05 mm/hari, 1,03 mm/hari and 1,05 mm/hari. Ciherang varieties have a value of grain production are higher compared with the variety Situ Bagendit and MakonggaThe Productivity of rice was Situ Bagendit 102,81 gram, Ciherang 124,16 gram and Makongga 94,48 gram.
     
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    http://repository.usu.ac.id/handle/123456789/64319
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