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The Effect of Minimum Temperature on Boro Rice Production of Bangladesh for Last Decade

Dr. Md. Ismail Hossin
PSO and Head
Agricultural Statistics Division, BRRI

Niaz Md. Farhat Rahman
SSO
Agricultural Statistics Division, BRRI

Md. Abdullah Aziz
Data Analyst
Agricultural Statistics Division, BRRI

Abstract/ Executive Summary:

The study was conducted to understand the impact of climate on Boro rice production and identify the vulnerable rice growing area in Bangladesh for changing climatic condition and adaptation process and to Policy recommendation of different area for rice production under diverse climatic condition. Rice production data are plotted in a figure using ArcGIS 10 software for different region of last decade. Then collect and calculate the data of minimum and maximum temperature for the Boro season from BMD (Bangladesh Meteorological Department) and plotted in graph for December-January and March-May differently in figures and graphs. Also it is plotted temperature data against the Boro rice production. Minimum temperature keeps prominent effect on Boro rice production during germination, subsequent growth and finally rice production. In last decade (2002-2012) Minimum temperature trend of December-January months more or less followed the trend of Boro rice production which indicates the effect of minimum temperature is prominent. Among 23 rice regions, the production of Patuakhali, Barisal, and Noakhali regions were low may be salinity effect is prominent there (as coastal area) where in Comilla, Sylhet, Kishoreganj, Bogra Dinajpur, Rajshahi, and Rangpur were high.

Keywords: Minimum Temperature, Boro Rice Production and GIS

Location: BRRI HQ, Gazipur

Start Date: 01-07-2013

End Date: 30-06-2014

Program Area: Crop-Soil-Water Management

Non-commodity: Temperature

Objectives:

To understand the impact of climate on rice (Boro) production.
To assess the possible change in production of rice.
To identify the vulnerable rice growing area in Bangladesh for changing climatic condition and adaptation process.
To assess the possible change in rice (Boro) production under historical assumption.
Policy recommendation of different area for rice production under diverse climatic condition.

Methodology:

At first it is collected the data of Boro rice production from BBS (Bangladesh Bureau of Statistics). Then the rice production data are plotted in a figure using ArcGIS 10 software for different region of last decade. Then collect and calculate the data of minimum and maximum temperature for the Boro season from BMD (Bangladesh Meteorological Department) and plotted in graph for December-January and March-May differently in figures and graphs. Also it is plotted temperature data against the Boro rice production. Considering the relation between minimum temperature and Boro rice production the effect of minimum temperature calculated for the regions.

Source of Information: BRRI Annual Report 2013-14, 179-183, ,BRRI, Gazipur.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Rice production increased gradually in all regions for the increase of technology but the increasing trend is not equal in all regions. The production is fluctuated in different year. Minimum temperature keeps prominent effect on Boro rice production. During germination and subsequent growth minimum temperature condition is important for plant. In the time of December-January, minimum temperature was less than 6⁰C at 2003 and 2007 in some region and maximum temperature remain near to 12-14⁰C. In March-May months, the minimum temperature vary from 10 to 20⁰C where maximum temperature was high as 18 to 24⁰C. Minimum temperature trend of December-January months more or less follow the trend of Boro rice production which indicate the effect of minimum temperature is prominent. In December-January the minimum temperature as well as yield were reduced in 2002-03 and 2006-07. In March-May the maximum temperature (day temperature) remain below 24⁰C always. Among 23 rice regions, the production of Patuakhali, Barisal, and Noakhali regions are low may be salinity effect is prominent there ( as coastal area) where in Comilla, Sylhet, Kishoreganj, Bogra Dinajpur, Rajshahi, and Rangpur is high may be for minimum temperature did not reach below critical temperature (<10⁰C) in March- May months. So salinity effect is more effective over minimum temperature for Boro rice. Recently found that the temperature fall behind 4⁰C in north region of Bangladesh which indicated that immediately need to preparation for facing cold temperature condition and its effect on Boro season.

Knowledge Management: Report/Proceedings