* Wheat

Wheat is one of the largest produced cereal grain in the world, with an annual production of about 720 Million tons. Wheat is the leading source of protein in human food, having a higher protein content than many other major cereals. After Rice, wheat is the second-most consumed human food. Top wheat producers are Russia, Ukraine, India, Australia, USA, France, Canada and Germany.

* Corn

Corn/Maize is mainly used as food and starch. Major producers of Maize are USA, China, Brazil, Argentina, Ukraine, India, Mexico, Indonesia, France and South Africa.

* Barley

Barley, a grain, comes from the cereal plant of the grass family. Barley is the fourth largest grain crop, globally, after wheat, rice and corn.People often eat the grain as food. Some people also use the grain to make medicine. In manufacturing, barley is used as a food grain, natural sweetener, and as an ingredient for brewing beer and making alcoholic beverages. Barley is commonly used in breads, soups, stews, and health products, though it is primarily grown as animal fodder and as a source of malt for alcoholic beverages, especially beer.