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Farmers harvest their field crops with machines. They use combines to harvest most grain and seed crops, including barley, corn, rice, soybeans, and wheat. A combine performs several tasks. First, it cuts the plant stalks. Then, it threshes the cuttings – that is, separates the grain or seeds from the straw and other residues. The combine returns the residues to the ground and collects the grain or seeds in a tank or bin.
Some farmers harvest corn with special machines. The machines pick the ears from the stalks but do not remove the grain from the ears. Special machines are also used to harvest other field crops, including peanuts, potatoes, and sugar beets. Some machines mow such crops as alfalfa and clover. The moved crops are left on the ground, where they dry and become hay. Machines called hay balers gather the hay and bind it into bales.
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Crops
Grain
Machines
Harvesting
