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Adoption and Demonstration of Water Saving Technologies Under Integrated Agricultural Productivity Project at Farmers’ Field in BARIsal Region. Trial: Water Salinity Monitoring for Boro Cultivation in Coastal Region of BARIsal -2014

Dr M A Rashid
CSO and Head
Irrigation and Water Management Division, BRRI, gazipur-1701, Bangladesh

Mir Nurul Hasan Mahmud
SSO
Irrigation and Water Management Division, BRRI, gazipur-1701, Bangladesh

Abstract/ Executive Summary:

A study was conducted to assess the suitability of water and soil salinity for boro cultivation, to delineate the trend of change of salinity in surface water and soil of coastal region of Barisal and to identify the saline water-sweet water interface. In March 2014 the water salinity ranged from 0.21dS/m in Payra river to 19.92dS/m in Andharmanik river. The salinity was increased in May 2014. In May 2014 water salinity ranged from 0.36dS/m to 48.58 dS/m. Water salinity in 2014 was higher in every month compared to corresponding months of the previous years. This might be due to the scarcity of rainfall in the month of May.

Keywords: Water salinity, Coastal zone, Boro cultivation

Location: Coastal Region of Barisal

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Water quality

Objectives:

To assess the suitability of water and soil salinity for boro cultivation.
To delineate the trend of change of salinity in surface water and soil of coastal region of Barisal.
To identify the saline water-sweet water interface.

Methodology:

The water salinity of Payra, Laukathi, Andharmanik and Shonatola rivers in Barisal region measured in the month of March, April and May during 2008, 2010 and 2014. Also canal water salinity of Shakharia Bazar, KhurierKheaghat and SekandarKhali was measured. Distance from sea of all the measuring point was measured.

Source of Information: Proceedings of the BRRI Annual Review for 2014, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Water salinity varied with distance from sea in both river and canal. Higher salinity was observed in Sekandar khali canal, Andhermanik river and Shonatola river. In 2014, highest water salinity observed in Andharmanik river in the month of May followed by Shonatola river.

Knowledge Management: Report/Proceedings