Measured and modeled biomass growth in relation to photosynthesis acclimation of a bioenergy crop (Reed canary grass) under elevated temperature, CO2 enrichment and different water regimes

► Elevated temperature enhanced early crop growth, resulting in earlier senescence. ► CO2 enrichment significantly increased photosynthesis and total biomass growth. ► High temperature reduced CO2-induced effect on biomass growth at later period. ► Low water level affected adversely crop growth, worse under elevated temperature. ► Model emphasizing seasonal photosynthesis acclimation simulated well crop growth.