Maize (IMAGE) Donald Danforth Plant Science Center Caption Maize is the world's leading grain crop used primarily for animal feed, food and bioenergy. Credit Donald Danforth Plant Science Center 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.