and harvested at the beginning of November, requiring
approximately 160 days of growth. After being harvested, the sweet
potatoes can be stored in good condition until February of
the following year because of climatic conditions. To meet the
requirements of fuel ethanol manufacture, the shelf life of the
sweet potato must be prolonged. In addition to improving storage
methods, harvesting ahead of schedule may be another method for
prolonging shelf life.
To our knowledge, no studies characterizing the varieties of
sweet potato crops in terms of ethanol production performance
have been conducted, and an optimal variety for ethanol production
remains unidentified. The aim of this study is to investigate
ethanol production performance and to select the appropriate
variety and growth period for ethanol production among the 10