The length of the paddy grain is variable, even within a variety, because of variation in the length of the awn and the pedicel. It is for this reason that the type of paddy is not determined by the length of the paddy grain but by the length of the brown rice kernel. In threshing through the paddy husker, it is important to watch at what point the paddy grain will break off its panicle, because the pedicel should not be a part of the grain, of else it will have a reduced milled rice recovery through the increase of "husk" production.
The effect of paddy moisture content on rice breakage. It was likely due to the level of moisture content (MC) in some grains, which gave some kind of resistance to breakage because Dilday (1987) reported that rice breakage during the milling process decreased with the increasing paddy moisture content as shown in Tables 2 and 4. Ofada had less breakage at 1.78 mm roller gap than at 1.5 mm gap thus agreeing with Matthews et al. (1970) who reported that rice breakage was mostly due to mechanical stresses rather than thermal stresses. The least dimension for Ofada was 1.59 mm thus lesser roller spacing would yield more breakage and in turn less head rice.
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