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Development of Suitable Salinity Management Techniques and Their Environmental Impact Assessment on the Coastal Eco-system of Bangladesh :existing Cropping Patterns and Yields-1999

Dr Manoranjan Mondal
SSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Performance evaluation of different on-farm salinity management techniques and their suitability by using available saline surface and groundwater in the coastal area has been done by survey work. The survey was conducted in Aman season to document the farmers’ cropping pattern and rice yield at Batiaghata area. The most dominant cropping pattern was Fallow-Rice-Fallow. Majority of the farmers of Batiaghata cultivated local rice varieties during Aman season by using rainfall. Farmers generally transplant rice in August, when soil salinity leached down by rainfall of June and July to a tolerable range. They generally do not use any fertilizer and do use about 40-50 days old seedlings to transplant after puddling lands. Farmers in this area transplant rice seedlings by adopting a wider spacing of about 30-40 cm, but not uniform, than their counterparts of the other localities of the country. Average rice yield varies from 1.5-2.5 t/ha. About 10-15% farmers cultivated BR23, a modern rice variety and harvested about 3.5 t/ha. Survey report revealed that Aman rice cultivation schedule is from July/August to November/December. Rest of the period most of the lands remain fallow. Farmers use these as grazing lands for their livestock. Some farmers near to the river use a small portion of their lands to grow shrimps by erecting about 1.0 m high levee around the plot.

Keywords: Coastal zone, Water productivity, Salinity

Location: Khulna

Start Date: 01-07-1998

End Date: 30-06-1999

Program Area: Risk Management in Agriculture

Non-commodity: Performance

Objectives:

To evaluate the performance of different on-farm salinity management techniques and their suitability by using available saline surface and groundwater in the coastal area

Methodology:

A survey was conducted in Aman season to document the farmers’ cropping pattern and rice yield at Batiaghata area. The survey assess the existing water management practices in through field visits and interviews using pre-designed questionnaire by interviewing 40 different types of farmer. The generated survey data on cropping aspects.

Source of Information: Proceedings of the BRRI Annual Review for 1999, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

1. Bangladesh Agricultural Research Council

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Fallow-Rice-Fallow cropping pattern was followed in that region and maximum farmers use low yielded (1.5-2.5 t/ha) local variety. About 10-15% farmers cultivated BR23, a modern rice variety and harvested about 3.5 t/ha. Aman rice cultivation schedule was from July/August to November/December. Rest of the period most of the lands remain fallow. Farmers use these as grazing lands for their livestock. Some farmers near to the river use a small portion of their lands to grow shrimps by erecting about 1.0 m high levee around the plot.

Knowledge Management: Report/Proceedings