%0 Journal Article %K Wheat %K CO2 sink %K Gross photosynthesis %K Maize %K Net CO2 exchange partitioning %K VPD limitation of photosynthesis %A Tagir G Gilmanov %A Bruce K Wylie %A Larry L Tieszen %A Tilden P Meyers %A Vern S Baron %A Carl J Bernacch %A David P Billesbach %A George G Burba %A Marc L Fischer %A Aaron J Glenn %A Niall P Hanan %A Jerry L Hatfield %A Mark W Heuer %A Steven E Hollinger %A Daniel M Howard %A Roser Matamala %A John H Prueger %A Mario Tenuta %A David G Young %B Agriculture, Ecosystems & Environment %D 2013 %P 162–175 %R 10.1016/j.agee.2012.09.017 %T CO2 uptake and ecophysiological parameters of the grain crops of midcontinent North America: Estimates from flux tower measurements %V 164 %8 01/2013