Open Access

Table 2

Sunflower yield variation for a range of experimental studies controlling [CO2] variation.

Reference [CO2] conditions (ppm) CO2 experimental design Shoot biomass variation with eCO2 Yield variation with eCO2
Vanaja et al. (2011) 380–700 Open top chambers +24% (well-watered)
+49% (water stressed)
Pal et al. (2014) 370–550 Open top chambers (field) +61% to +68% (2 varieties) +35% to +46% (2 varieties)
Srinivasarao et al. (2016) 380–550–700 Open top chambers (field) +32% (700 ppm)
+42% (550 ppm)

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