ACKNOWLEDGMENTS
We acknowledge the partial support provided by the U.S. Department of Agriculture (USDA-CRS
NRICGP grants 91-37100-6594 and 94-01541), the U.S. Department of Energy (Interagency Agreement
DE-AI02-93ER61720), and the U.S. Environmental Protection Agency Carbon Dioxide Research Divi-
sion (Interagency Agreement DW12934099). Florida Agricultural Experiment Station Journal Series
No. R–07652.
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