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Witoon JAIPHONG
National Agricultural Machinery Center, Kasetsart University Kamphaeng Saen campus
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Sombat CHINAWONG
Faculty of Agriculture, Kasetsart University Kamphaeng Saen campus
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Sirichai SATHUWIJARN
Plant protection Research and Development office, Department of Agriculture
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Anuwat KUMPAENGKEAW
Department of Agronomy, Faculty of Agricultural Production, Maejo University