What is the most important grain crop?

One of the most important crops in human life, these are plants that give grain, it is a necessary food product. Feed for farm animals and raw materials for industry. Human-grown cereals belong to four families, these are haze, cereals, buckwheat and amaranth. Cereals are divided into legumes (soybeans, peanuts, peas, beans) and grain crops (wheat, rye, rice, oats). Buckwheat is a cereal. And the grains of wheat, oats and rye contain a large amount of carbohydrates, proteins, vitamins and enzymes necessary both for human life and for feed use.