Close-Up of a Head of Wheat (IMAGE) Kansas State University Caption Wheat is grown on more than 531 million acres around the world and produces nearly 700 million tons of food and feed each year. Scientists are working to create a full genetic map of the plant in order to improve its resistance to diseases and drought as well as improve its food yield. Credit Kansas State University Photo Services Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.