| Abstract Submission No. | ABS-4.1-0100 |
| Title of Abstract | Assessing Climate Change Impacts on Sorghum Yield�WUE Dynamics across Telangana Agroclimatic Zones |
| Authors | Mrinalini Srivastava, R.K Mall*, R.K Mall |
| Organisation | DST-MCECCR, IESD BHU |
| Address | BANARAS HINDU UNIVERSITY varanasi, Uttar Pradesh, India Pincode: 221005 E-mail: mrisri18@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | Sorghum (Sorghum bicolor L. Moench), a key cereal crop in the semi-arid landscapes of Telangana, plays a vital role in food, fodder, and livelihood security for millions of smallholder farmers. Predominantly cultivated under rainfed conditions during the kharif season, sorghum is increasingly vulnerable to climate change, marked by rising temperatures, erratic monsoons, and recurring droughts. These changes threaten both grain yield and water-use efficiency (WUE), two critical indicators of crop performance in water-limited systems. This study employs the DSSAT�CERES-Sorghum model to evaluate the potential impacts of climate change on sorghum across Telangana�s agroclimatic conditions. Historical daily weather data from the India Meteorological Department (1980�2009) and bias-corrected projections from CMIP6 Global Climate Models under SSP2-4.5 (moderate emissions) and SSP5-8.5 (high emissions) provide the climatic basis for simulations. The methodology integrates site-specific datasets on soils, crop management, and genotype parameters, enabling calibration and validation of sorghum cultivars under rainfed conditions. Simulations will be conducted for baseline (1980�2009), mid-century (2040�2069), and end-century (2070�2099) periods to quantify shifts in yield and WUE. Climate stress regimes (hot/dry, cool/wet, warm/wet) will be classified using percentile-based thresholds to capture variability and extremes. The study is expected to highlight future vulnerabilities by linking projected heat events (Tmax > 35�C) and rainfall irregularities with yield�WUE performance, particularly under rainfed systems where climate risk is most pronounced. By identifying critical climate stressors, vulnerable regions, and projected performance trends, the research will provide a foundation for designing targeted adaptation strategies such as optimized sowing windows, adoption of heat- and drought-tolerant cultivars, and improved soil and water management practices. The findings aim to bridge knowledge gaps in yield�WUE�climate linkages for Telangana, where comprehensive assessments remain limited despite sorghum�s agricultural significance. |
| Keywords | Keywords: CERES Model, CMIP6, Elevated temperature, CO2, Climate Change |