Acknowledgments
This study was financially supported by the North Carolina Center for Turfgrass Research and Education. We appreciate Ms.Lisa Lentz and Environmental and Agricultural Testing Service Lab for analyzing total soil carbon and nitrogen. We thank the staff in the Sandhills Research Station, North Carolina State University for managing the field plots. The data of daily temperatures and precipitations were provided by the State Climate office of North Carolina. Anonymous reviewers have provided constructive comments and suggestions for the improvement of the manuscript.