International Journal of Environmental Sciences

Volume 2 Issue 3 2012           Pages:1787- 1797

Impact of climate change on development phases of winter rice in Bangladesh

Author Information:

Jayanta Kumar Basak -Research Associate, Economic Policy Unit, Unnayan Onneshan-The Innovators, 16/2, Indira Road, Farmgate, Dhaka - 1215, Bangladesh

ABSTRACT
Impact of climate change on development phases of rice is one of the major concern issues due to yield reduction. In the present study, development phases of winter rice (boro rice) of BR3 and BR14 varieties for the years 2008, 2030, 2050 and 2070 have been simulated for 12 major rice growing Agro-Ecological Zones (AEZs) of Bangladesh using DSSAT model. Available data on soil and hydrologic characteristics of these locations, and typical crop management practices for boro rice were used. The weather data required for the model were generated for the selected years and for the selected locations using the regional climate model PRECIS. Compared to 2008, the model predicted average reductions in development phases in days of BR3 variety for the selected 12 locations were 1 in Emergence (E) to End Juvenile (EJ) phase, 1 in Panicle Inition (PI)  to End Leaf Growth (ELG) and 1 in Grain Filling Phase (GFP) phase during 2030; 4 in E to EJ, 1 in EJ to PI, 3 in PI to ELG and 2 GFP phase for the year 2050 and 7 in E to EJ, 3 in EJ to PI, 5 in PI to ELG and 3 GFP in 2070. Similar results were also found for BR14 variety for the selected locations in Bangladesh. Therefore, developing new rice varieties with considering climatic adaptive, proper growing period should be maintained.

Keywords : Climate change, boro rice, Bangladesh, development phases, DSSAT model.

DOI: 10.6088/ijes.00202030062


© 2012 Copyright Jayanta Kumar Basak, licensee IPA.This is an open access article distributed under the Creative Commons Attribution License (2.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The electronic version of the article can be downloaded below.

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