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Syojirou Zen
Saga Upland Farming Experiment Station
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Akiko Furuta
Saga Prefectural Agriculture Support Center
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Kyo Itoyama
National Research Institute of Vegetable, Ornamental Plants and Tea
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Tetsuro Shinoda
National Research Institute of Vegetable, Ornamental Plants and Tea
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Akira Kawai
National Research Institute of Vegetable, Ornamental Plants and Tea