Yam Bean (IMAGE) American Society of Agronomy Caption This small bean has great potential to provide high quality food production and offer a sustainable cropping system that has been needed in Africa. Credit Wolfgang Gruneberg 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.