Radish Cover Crop Field (IMAGE) American Society of Agronomy Caption Experimental strip of radish cover crop planted following winter wheat, Sheboygan County, Wis. Credit Matt Ruark. Usage Restrictions Please use with story only. 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.