Grain harvesting is the process of gathering mature crops from the fields. This typically involves cutting the plants, separating the grain from the chaff, and collecting the grains for storage or processing. Common grains harvested include wheat, corn, and rice. Modern harvesting often uses machinery like combine harvesters, which can efficiently cut, thresh, and clean the grain in one operation. Harvesting usually occurs in late summer or early fall, depending on the crop and local climate conditions. Proper timing is crucial to ensure maximum yield and quality of the harvested grain.