Just how will increased CO2 affect crops and in particular the nutritional value:
some research more will be added
http://ec.europa.eu/environment/integration/research/newsalert/pdf/101na6.pdf
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2486.2007.01511.x/pdf
http://public.wsu.edu/~wwql/reprints/295.pdf
http://iris-aff.dc.affrc.go.jp/jp/en/outcome/translation/analysis/Rice_Yield_Increases_and_Protein_Content_Decreases_in_FACE_-Free_Air_CO2_Enrichment-_Agricultural_Fields.pdf
http://www.sciencemag.org/content/328/5980/899.full.pdf
http://si-pddr.si.edu/jspui/bitstream/10088/48/1/More%20Efficient%20Plants.pdf
http://88.167.97.19/albums/files/TMTisFree/Documents/Climate/The_CO2_fertilization_effect_higher_carbohydrate_production_and_retention_as_biomass_and_seed_yield.pdf
Looks like more plant mass, more grain, less %protein with increased CO2
So more fertilizer required for less protein but more carbohydrate.
Not sure that this is a good scenario!
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