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Coordinated Project on Water Management for Enhancing Crop Production Under Changing Climate-brri Component: T.aman Season-2012

Dr M A Rashid
CSO and Head
IWMD, BRRI

Dr M Mahbubul Alam
SSO
IWMD, BRRI

Abstract/ Executive Summary:

A project work has been carried out to conjunctive use of water resources in the study area, to develop appropriate water management technologies for increasing crop production, cropping intensity, irrigation efficiency, land and water productivity for improved livelihood and to identify water resources management technologies to mitigate consequences of climate change. The project activities were conducted in two selected sites namely Satkhira and Kapasia (Gazipur). The field works were started from T Aman season, 2011. During the T Aman season, field trials were conducted on rain water harvesting by constructing strong levees (15 cm height) around the rice fields and suppleenta irrigation. In Gazipur area, BRRI dhan46 and BRRI dhan49 were used and the yields were 3.2 and 4.0 t/ha respectively. In this area, the rainfall during the growing period was 1903 mm. In Satkhira, area BR10 and BRRI dhan39 were used and the yields were 4.3 and 3.5 t/ha respectively. In this area, the total rainfall during the growing season was 2035 mm. For supplemental irrigation experiment, one irrigation was required in Kapasia and two irrigations in Satkhira area. The yield increased over rainfed condition was 25% and 10% in Kapasia area for BRRI dhan46 and BRRI dhan49, respectively. In Satkhira area, the increased yields were 9.3% for BR10 and 14.2% for BRRIdhan 39.

Keywords: Groundwater, rainwater harvesting, supplemental irrigation

Location: Satkhira and Kapasia (Gazipur)

Start Date: 01-07-2011

End Date: 30-06-2012

Program Area: Crop-Soil-Water Management

Commodity: Water management

Objectives:

To use water resources conjunctively in the study area
To develop appropriate water management technologies for increasing crop production, cropping intensity, irrigation efficiency, land and water productivity for improved livelihood.
To identify water resources management technologies to mitigate consequences of climate change.

Methodology:

The project activities were conducted at two selected sites namely Satkhira and Kapasia (Gazipur). The field works were started from T Aman season, 2011. During the T Aman season experiments were conducted on rain water harvesting and supplemental irrigation. Field trials were conducted on rain water harvesting by constructing strong levees (15 cm height) around the rice fields. For supplemental irrigation experiment, one irrigation or two irrigations were used if necessary. In Gazipur area, BRRI dhan46 and BRRI dhan49 and in Satkhira, area BR10 and BRRI dhan39 were used. Fertilizer were used as 165-60-105-68 kg/ha of urea-TSP-MOP-Gypsum.

Source of Information: BRRI Annual Internal Review, 2012

Article Link (Online Journal):

Funding Source:

1. Bangladesh Agricultural Research Council	Budget:
2.	Budget:

Total Budget (Tk.) :

Achievement/Findings:

In Gazipur area, for rainwater harvesting, BRRI dhan46 and BRRI dhan49 were used and the yields were 3.2 and 4.0 t/ha respectively. In this area, the rainfall during the growing period was 1903 mm. In Satkhira, area BR10 and BRRI dhan39 were used and the yields were 4.3 and 3.5 t/ha respectively. In this area, the total rainfall during the growing season was 2035 mm. For supplemental irrigation experiment, one irrigation was required in Kapasia and two irrigations in Satkhira area. The yield increased over rainfed condition was 25% and 10% in Kapasia area for BRRI dhan46 and BRRI dhan49, respectively. In Satkhira area, the increased yields were 9.3% for BR10 and 14.2% for BRRIdhan 39.

Knowledge Management: Report/Proceedings