Abstract
In Japan, rice is harvested at the relatively early stage of ripening to prevent the occurence of the checked grains caused by rainfall, consequently, a difference of about 10% in moisture content is recognized between early and late ripened grains at the harvest-time. This unbalance in moisture content is more conspicuous in late or large-panicle variety than in early or small-panicle variety. It is indispensable to make uniform the moisture contents in process of the drying treatment of rough rice grains in order to preserve the good quality.
