A research field plot (IMAGE) Penn State Caption A research plot after dairy manure slurry was injected into a growing cover crop in early spring when temperatures were cooler, A new study demonstrated that the practice achieved multiple conservation goals while maintaining corn yield. Credit Sailesh Sigdel/Penn State Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.