تاریخ آدم میں پہلے پہل غلہ کی پیداوار، کاشت اور غلہ بازی گھریلو پیمانے پر ہوا کرتی تھی۔ تقریباً 8,000 سال پہلے زرخیز علاقوں میں گھریلو سطح پر کاشت کی جاتی تھی۔ اس کاشت کاری میں گندم، بارلی اور چاول اہم غلہ تھا۔ یہ پیداوار ایشاء اور مغربی افریقہ کے صحرائی علاقوں میں ہوا کرتی تھی۔
A staple food of people in the Americas, Africa, and of livestock worldwide; often called corn in North America, Australia, and New Zealand. A large portion of maize crops are grown for purposes other than human consumption. It can also be used for indirect human consumption through the production of the Mexican truffle.
The primary cereal of tropical and some temperate regions. Staple food in most of Brazil (both maize and manioc/cassava were once more important and its presence is still stronger in some areas), other parts of Latin America and some other Portuguese-descended cultures, parts of Africa (even more before the Columbian exchange), most of South Asia and the Far East. Largely overridden by breadfruit (a dicot tree) during the South Pacific's part of the Austronesian expansion.
The primary cereal of temperate regions. It has a worldwide consumption but it is a staple food of North America, Europe, Australia, New Zealand, most of the Southern Cone and much of the Greater Middle East. Wheat gluten-based meat substitutes are important in the Far East (albeit less than tofu) and said to resemble meat texture more than others.
Popular worldwide as a breakfast food and livestock feed. In human consumption, oats can be served as porridge as oatmeal, although oats could be eaten various different forms other than rolled oats, including unprocessed oats. Oats are commonly mixed with bananas in exercise-intensive diets.