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*Kenta Watanabe
Fac. of Agr., Univ. of the Ryukyus The United Graduate School of Agr. Sci., Kagoshima Univ.
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Kazuhiro Maesato
Fac. of Agr., Univ. of the Ryukyus The United Graduate School of Agr. Sci., Kagoshima Univ.
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Takuma Matsubara
Fac. of Agr., Univ. of the Ryukyus
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HIroo Takaragawa
Fac. of Agr., Univ. of the Ryukyus
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Masami Ueno
Fac. of Agr., Univ. of the Ryukyus
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Yoshinobu Kawamitsu
Fac. of Agr., Univ. of the Ryukyus