Chickpea field plot (IMAGE) American Society of Agronomy Caption Researchers conducted a field trial with chickpea plants to identify natural sources of resistance to Pythium ultimum. Credit George Vandemark Usage Restrictions For use with this 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.