水稲種子浸漬水槽の衛生管理によるイネばか苗病の感染抑制効果

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  • Effectiveness of Hygienic Management of Rice Seed Immersion Tanks in Controlling the Spread of Bakanae Disease
  • スイトウ シュシ シンシ スイソウ ノ エイセイ カンリ ニ ヨル イネバカナエビョウ ノ カンセン ヨクセイ コウカ

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<p>The aim of this study was to develop a technique for hygienically managing immersion of water in order to control the spread of the bakanae disease during the seed immersion and forced germination stages of seedling cultivation. Immersion and germination forcing of the trail seeds was performed by immersing them in a circulating tank filled with an aqueous suspension of pathogen spores and treating the immersion solution using either a UV irradiation prototype with 254 nm and 184.9 nm UV light sources or a 1μm filter. When the solution was not treated, the percentage of soaked seeds with the pathogen was 15.3 after immersion and 98.7 after germination forcing. When the solution was treated with the UV irradiation prototype, the figures were 1.3 and 0 respectively, and when treated with the filter they were 0 and 0. Neither treatment method led to a decline in germination rates, and both were shown to be effective techniques for controlling the bakanae disease.</p>

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