Forage Corn Varieties Suitable for Grain Production in Spring Seeding in Southern Kyushu

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  • Muroi Chiharu
    Kyushu Okinawa Agricultural Research Center Miyakonojo Research Station, NARO Present address: Retiree
  • Muraki Masanori
    Kyushu Okinawa Agricultural Research Center Miyakonojo Research Station, NARO resent address: Kyushu Okinawa Agricultural Research Center, NARO

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  • 九州南部の春播き栽培における子実生産に適した飼料用トウモロコシの品種
  • キュウシュウ ナンブ ノ ハル マキ サイバイ ニ オケル コ ジッセイサン ニ テキシタ シリョウヨウ トウモロコシ ノ ヒンシュ

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Abstract

<p>In southern Kyushu, forage corn varieties were tested for grain production in spring seeding. This research was carried out in 2018 and 2019. Herein, 28 varieties from relative maturity (RM) 105 to 129 were evaluated for root rot rate, lodging rate, and stalk breakage rate at the yellow- and full-ripe stages, as well as grain yield at the full-ripe stage. Tukey test classified 15 varieties in the highest grain yield group in two years. And the top eight varieties with the highest average grain yield over two years produced more than 900 kg/10 a. Furthermore, four varieties were chosen as suitable varieties for spring seeding in southern Kyushu due to their high grain yields and strong resistance to lodging, stalk breakage, and root rot. Additionally, grain yields at full-ripe stage were correlated to ear yields at yellow-ripe stage. Therefore, varieties with high ear yields at the yellow-ripe stage from a result of the past results of performance test were assumed to have high grain yields at the full-ripe stage.</p>

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