Vol. 12, Issue 1 (2023)

Author(s):
RK Sahu, Divyachetna, D Dugal, AKB Mohapatra, TR Mohanty, BS Rath, BK Mohapatra, DS Priyadarshi and A Nanda

Abstract:
Rice is the staple food crop of Odisha region, but it is matter of concern that it is below national average in yield. The predominate reason is adverse climate condition. With increasing effect of climate change, Rice production in the region is at stake, that’s why it was needed to study impact of climate change on the yield in the future perspective. In this study CERES-RICE model of DSSAT is used to asses climate change impacts in Odisha region. This study aimed to explore the impacts on yield of rice variety (Sahabhagidhan) in summer season under projected climate change for Khordha, Odisha using four global climate change Representative Concentration Pathways (RCP) scenarios 2.6, 4.5, 6.0 and 8.5 for four future years 2040, 2060 and 2080. CMIP5 (Coupled Model Intercomparison Project Phase 5) was employed to generate these climate projections with weather parameters like temperature, rainfall and solar radiation for the study area. The Decision Support System for Agro technology Transfer (DSSAT) software was used to forecast the rice yield under four transplanting dates (15 January, 31 January, 15 February and 28 February) for summer season in 2040, 2060 and 2080. In the present study, Sahabhagidhan recorded higher grain yield in early season transplanting (January 15) whereas late season transplanting (February 28) recorded lower grain yield condition. Under the projected climatic condition for the years 2040, 2060, and 2080, RCP 2.6, 4.5, 6.0 and 8.5 scenarios are found to cause negative impacts on the grain yield of summer rice in. In the Future years namely 2040, 2060, and 2080 there is a reduction in the grain yield of summer rice under the seasonal climatic projection due to the increase in seasonal maximum temperature, minimum temperature and decreasing rainfall condition.