Kale_sampling UMD (IMAGE) University of Maryland Caption NFSC PhD student Qingyue Zeng (left), first author of the paper, and undergraduate student Derek Konsen collecting soil cores in an amended plot at a local urban farm. Credit Ryan Blaustein UMD Usage Restrictions none 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.