Climate change impact assessment and developing adaptation strategies for rice crop in western zone of Tamil Nadu

The CERES-Rice model in the Decision Support System for Agro-technology Transfer (DSSAT) was used assessing impact of climate change on rice and developing adaptation strategies to sustain production western zone Tamil Nadu. Model results showed that yield reduction ranged from 4 -56 % with increase temperature 1 5°C respectively current under different dates planting 1st June 15th July. sowing windows tested as strategy indicated condition early, normal, late during kharif season -21.2, -15.0 -16.3 3°C 650 ppm CO2 enrichment, rabi season, it -9.2, +10.2 +11.0 respectively. To manage water crisis changing climatic conditions, methods cultivation viz., transplanted (TRC- conventional), direct sown (DSR), alternate wetting drying method (AWD), system intensification (SRI) aerobic (ARC) simulated. Higher grain registered SRI saving 16 7.8% seasons.