The present experiment was conducted to evaluate the effect of elevated [CO2] with varying nutrient management on rice–rice production system. The experiment was conducted in the open field and inside open-top chambers (OTCs) of ambient [CO2] (≈390 μmol L−1) and elevated [CO2] environment (25% above ambient) during wet and dry seasons in 2011–2013 at Kharagpur, India. The nutrient man…