Interaction of the Onset of Spring and Elevated Atmospheric CO2 on Ragweed (Ambrosia artemisiifolia L.) Pollen Production
Christine A. Rogers, Peter M. Wayne, Eric A. Macklin, Michael L. Muilenberg, Christopher J. Wagner, Paul R. Epstein, and Fakhri A. Bazzaz
Environ Health Perspect. 2006 June; 114(6): 865–869. Published online 2006 February 9. doi: 10.1289/ehp.8549.PMCID: PMC1480488