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*Chae Young Lee
Chungbuk Agricultural Extension Service in S. Korea
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Jae Seong Park
Chungbuk Agricultural Extension Service in S. Korea
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Eun Jeong Kim
Chungbuk Agricultural Extension Service in S. Korea
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Eui Yeon Hong
Chungbuk Agricultural Extension Service in S. Korea
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Sun Hee Woo
Division of Crop Science, Chungbuk National University in S. Korea