Measuring emissions on celery farm (image) American Society of Agronomy Share Print E-Mail Caption To measure greenhouse gas emissions from manure application on a celery farm, researchers covered some of the plants with chambers that would trap the gases. The metal border is the base of the chamber. Credit Shu Kee Lam Usage Restrictions For use with this story only. Share Print E-Mail 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.