weedy rice (IMAGE) Washington University in St. Louis Caption Weedy rice competes with cultivated rice for resources throughout the growing season, robbing the crop of nutrients and water. Here, researchers identify and collect weedy rice samples from a field in Arkansas. Credit Marshall Wedger, Washington University in St. Louis Usage Restrictions For editorial purposes License Original 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.