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Nobuo SAKAGAMI
College of Agriculture, Ibaraki University [Japan] Faculty of Urban Environmental Sciences, Tokyo Metropolitan University [Japan]
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Fumitaka SHIOTSU
School of Agriculture, Meiji University [Japan]
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Naomi ASAGI
College of Agriculture, Ibaraki University [Japan]
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Masakazu KOMATSUZAKI
College of Agriculture, Ibaraki University [Japan]
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Youji NITTA
Fukushima University [Japan]
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Dewa Ngurah SUPRAPTA
Faculty of Agriculture, Udayana University [Indonesia]