Dry Weight (Biomass) References
Sorghum halapense (L.) Pers. [Johnsongrass]

Carter, D.R. and Peterson, K.M.  1983.  Effects of a CO2-enriched atmosphere on the growth and competitive interaction of a C3 and a C4 grass.  Oecologia 58: 188-193.

Patterson, D.T., Flint, E.P. and Beyers, J.L.  1984.  Effects of CO2 enrichment on competition between a C4 weed and a C3 crop.  Weed Science 32: 101-105.

Ziska, L.H. and Bunce, J.A.  1997.  Influence of increasing carbon dioxide concentration on the photosynthetic and growth stimulation of selected C4 crops and weeds.  Photosynthesis Research 54: 199-208.

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