ASSESSMENT OF CLIMATE CHANGE UNDER A2 SCENARIO AND ITS EFFECT ON KHARIF MAIZE (ZEA MAYS L.) YIELD USING INFO CROP MODEL FOR DAHOD DISTRICT OF MIDDLE GUJARAT AGRO CLIMATIC ZONEDivesh Choudhary, H.R. Patel and V. PandeyAbstract The impact of projected climate change in kharif maize (cv. GM-3 and GS-2) yield have been studied for Dahod station of middle Gujarat Agro-climatic region (200 50N, 750 18E and 313 m) using PRECIS output of A2 scenario (2071-2100) and baseline (1960-1990) data. Yield simulation study was performed by Info Crop model. The experiment data on kharif maize cv. GS-2 and GM-3 during 2004 to 2007 have been used to calibrate and validate the model. The weather condition as projected period by A2 scenario showed that there will be 43% higher rainfall as compared to baseline. The average temperature rise during 2071-2100 was found 4.3 0C in both the maximum and minimum temperature as compared to their baseline temperatures (32.6 and 19.4 0C), respectively. The CO2 concentration will be increased at a rate of 0.24 ppm on annual basis during projected period. The grain yield, biomass yield reduction as compare to baseline was noted in D1 & D2 sowing for sowing for cv. GS-2 and GM-3, respectively. Higher reduction was found in cv. GS-2 for anthesis, LAI and similar reduction noticed in days to maturity in both the cv. and date of sowing. Higher reduction was noted for D2 sowing date for both the cultivars.
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