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Characterization of Boro Rice Growing Environment

Md. Shahjahan Kabir
SSO
Agricultural Statistics Division, BRRI, Gazipur

DR. D.N.R. Poul
CSO and Head
Agricultural Statistics Division, BRRIGazipur

Abstract/ Executive Summary:

BRRI has so far released 19 MVs for growing in the Boro season. Six dominant varieties namely, BR3, BR14, BRRI dhan28, BRRI dhan29 and BRRI dhan36 were used for this study. Boro is a fully irrigated winter crop. Soil (land type and soil physical properties) is the primary factor for determining where the crop can be grown and temperature is one of the important weather parameter affecting seedling growth, crop establishment, growth and grain filling. In this study, long-term average temperature for Boro growing period from January to April was considered. The soil parameters considered were land type, top soil texture, permeability, slope, drainage and salinity. Yield was used as the indicator of suitability of a particular variety with respect to soil properties, which are fixed for a geographical location.

Keywords: Characterization, AEZ, Weather variables, Aus, Aman and Boro

Location: BRRI HQ and all R/S of BRRI

Start Date: 30-06-2001

End Date: 31-12-2003

Program Area: Socio-economic and Policy

Non-commodity: Rice, Classification

Objectives:

To develop environmental indices for rice growing areas of Bangladesh.
To map the areas suitable for BRRI varieties in Boro, Aus and T.Aman seasons.

Methodology:

SRDI were used for geo-referenced data on land and soils. Both classical and geo-statistical techniques Secondary data on yield, date of planting, inputs use, etc. of BRRI varieties will be collected from experiments/demonstrations conducted in different geographical locations. Weather data (rainfall, temperature and sun shine hours) in the experiment/demonstration sites were collected from meteorological department/nearby research stations. AEZ database, Thana Nirdeshika were used to relate yield with crop management, weather variables and soil properties that was lead to develop a mathematical index of rice growing environment for a particular geographical location.

Source of Information: BRRI Annual Report 2002-03

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 200000

Total Budget (Tk.) : 200000

Achievement/Findings:

From the characterization of Boro growing environment, six environments were identified in Boro growing areas in Bangladesh based on soil and long-term average temperature from January to April. Environment 1 stands for most favorable for all varieties and environment 6 stands for least favorable for any variety. Other environments were between most and least favorable.

Knowledge Management: Report/Proceedings