Cutting is the first operation in harvesting. Depending on the crop's condition, and availability of labor or machinery, cutting can be done either manually or mechanically.
Threshing is the process of separating the grain from the straw. It can be either done by hand, by using a treadle thresher or mechanized.
Grain cleaning after harvest is important as it removes unwanted materials from the grain. Clean grain has a higher value than grain that is contaminated with straw, chaff, weed seeds, soil, rubbish, and other non-grain materials.
Combines “combine” several operations into one: cutting the crop, feeding it into threshing mechanism, threshing, cleaning, and discharge of grain into a bulk wagon or directly into a bags. Straw is usually discharged behind the combine in a windrow.
