Maize productivity analysis in response to climate change under different nitrogen management strategies

The evaluation of climatic change impact on maize grain and biomass yield under different N management practices through a well-calibrated validated APSIM model in Vertisol central India has been made. Climate scenarios were derived from seven global climate models (GCM) for two representative concentration pathways (RCPs), i.e. RCP4.5 RCP8.5, two-time slices, 2050 2080. five scenarios, namely N0%, N50%, N100%, N150%, 100% organic, studied scenarios. probability exceedance showed that organic treatments have 50% chance greater than 1.0, 3.40, 4.20, 4.45 3.84 t ha-1, respectively. average reduction was -44.4, -20, -19.7 - 17.9 22.5 per cent 0%, 50%, 100%, 150%, respectively over the baseline period (1980-2010). For 41.2, 21.2, 20.8 20.6 23.1 cent, Simulation results suggested higher decrease 100 inorganic is due to variability uptake.