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2015-09-27T15:23:52+05:30

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Grains such as wheat and rice, when harvested, are cut along with their stems. they are seperated from cut stem by threshing. the process of threshing means beating the stalks to seperate the grains. thus the grains, still covered with chaffs are seperated from the stem.the chaffs are removed in winnowing.
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