by 綱島, 芽吹, 宮本, 慎宏, 宇都宮, 直樹
Published in 構造工学論文集B (2024)

by 志水, 恒介, 巽, 賢太郎, 宇都宮, 直樹, 神崎, 真哉, 伊藤, 仁久, 重岡, 成
Published in Engeigaku kenkyuu (2021)

by 神崎, 真哉, 井上, 紘一, 宇都宮, 直樹, 矢野, 正善
Published in Engeigaku kenkyuu (2013)

by 佐々木, 勝昭, 宇都宮, 直樹
Published in Engeigaku kenkyuu (2002)

by 高松, 善博, 北川, 智浩, 竹林, 晃男, 宇都宮, 直樹
Published in Engeigaku kenkyuu (2004)

by 文室, 政彦, 櫻井, 直樹, 宇都宮, 直樹
Published in Journal of the Japanese Society for Horticultural Science (2013)

by 神崎, 真哉, 山田, 昌彦, 佐藤, 明彦, 三谷, 宣仁, 宇都宮, 直樹, 米森, 敬三
Published in Journal of the Japanese Society for Horticultural Science (2009)

by 神崎, 真哉, 赤木, 剛士, 増子, 琢哉, 木村, 未幸, 山田, 昌彦, 佐藤, 明彦, 三谷, 宣仁, 宇都宮, 直樹, 米森, 敬三
Published in Journal of the Japanese Society for Horticultural Science (2010)

by 神崎, 真哉, 佐藤, 明彦, 山田, 昌彦, 宇都宮, 直樹, 北島, 宣, 池上, 礼子, 米森, 敬三
Published in Journal of the Japanese Society for Horticultural Science (2008)

by 宇都宮, 直樹, 重永, 昌二
Published in Japanese journal of crop science (1992)

by 樋口, 浩和, 宇都宮, 直樹
Published in Engei Gakkai zasshi (1999)

by 佐々木, 勝昭, 宇都宮, 直樹
Published in Nettai nōgyō (01.12.2002)

by 佐々木, 勝昭, 宇都宮, 直樹
Published in Nettai nōgyō (01.12.2002)

by R., LERSRUTAIYOTIN, 重永, 昌二, 宇都宮, 直樹
Published in Japanese journal of crop science (1991)

by 宇都宮, 直樹
Published in Nettai nōgyō (01.09.1989)

by 宇都宮, 直樹
Published in Nettai nōgyō (01.09.1988)

by 文室, 政彦, 宇都宮, 直樹
Published in Engei Gakkai zasshi (1999)

by 佐々木, 勝昭, 竹林, 晃男, 宇都宮, 直樹
Published in Nettai nōgyō (01.09.1998)

by 大久保, 昌孝, 宇都宮, 直樹
Published in Nettai nōgyō (01.12.1994)

by 米森, 敬三, 杉浦, 明, 宇都宮, 直樹
Published in Nettai nōgyō (01.06.1999)