1. Department of Soil and Water Sciences; Indian River Research and Education Center; Institute of Food and Agricultural Sciences; University of Florida; Fort Pierce FL 34945 USA
2. College of Resources and Environment; Southwest University; Beibei Chongqing 400715 China
3. George and Josephine Butler Polymer Research Laboratory; Department of Chemistry; Center for Macromolecular Science and Engineering; University of Florida; Gainesville FL 32611 USA
4. USDA-ARS U.S. Horticultural Research Laboratory; Fort Pierce FL 34945 USA