Effects of Foggage Storage Period from Autumn to Winter on the Spring Regrowth of Summer-seeded Sorghum (Sorghum bicolor Moench)

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  • ISHII Yasuyuki
    Grassland and Animal Production Division, Faculty of Agriculture, Miyazaki University
  • ITO Koji
    Grassland and Animal Production Division, Faculty of Agriculture, Miyazaki University
  • NUMAGUCHI Hirotsugu
    Grassland and Animal Production Division, Faculty of Agriculture, Miyazaki University

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  • 夏播きソルゴー(Sorghum bicolor Moench)の秋から冬の立枯れ貯蔵期間が越冬後の春の再生に及ぼす影響
  • Effects of Foggage Storage Period from

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Summer-seeded sorghum (Sorghum bicolor Moench, cv. Pioneer 956) was subjected to different periods of foggage storage in the field, i.e. until December, January or March. The storage effects on the spring regrowth of the plants were analyzed mainly in relation to the tiller growth. The prolonging foggage storage in the field decreased foggage yield. On the contrary, it increased the survived percentage of emerged tiller buds (ETBs) while it scarcely affected the number of total tiller buds (TTBs) on a stubble tiller, the emerged percentage of TTBs and the regrown percentage of survived tiller buds. The increase in the survived percentage of ETBs with the prolonging storage period resulted in the increase in the regrown percentage of plant and consequently in the increase in the regrown plant yield from the next spring to heading. Sum of the foggage and regrown plant yields increased with the prolonging storage and it suggested the potentiality of summer-seeded foggage sorghum to be used as a biennial crop.

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