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Assessment of Farm Reservoir for Crop Production in the Coastal Area at Sonagazi

Dr H R Molla
Principal Scientific Officer
Irrigation and Water Management Division, BRRI

M Mamunur Rashid
Scientific Officer
R/S Sonagazi, BRRI and Adaptive Research Division, BRRI.

Dr M A Rashid
PSO
Irrigation and Water Management Division, BRRI

Dr M A Latif Shah
Head and Chief Scientific Officer
Soil Science Division, BRRI.

Dr M A Sattar
Head and Chief Scientific Officer
Irrigation and Water Management Division, BRRI.

Abstract/ Executive Summary:

Rainwater harvesting in a reservoir with 25 cm high embankment conserved more water than without embankment, which could increase area to irrigate rabi crops in the coastal area. It was observed that rainfed T.Aman rice-tomato with irrigation cropping sequence is more profitable than other cropping sequences. It is also evident that cultivating HYV rice in aman season farmers can get more benefit which can improve the livelihood of the coastal area farmers.

Keywords: Farm reservoir, Crop production, Coastal area

Location: Sonagazi, R/S, BRRI, Feni, Bangladesh

Start Date: 01-07-2008

End Date: 30-06-2009

Program Area: Crop-Soil-Water Management

Commodity: Rain water

Objectives:

• To assess the use of existing farm reservoir for crop production • To renovate existing farm reservoir for water potentiality and crop productivity • To estimate economic benefit of farm reservoir for land productivity improvement and improving livelihood of the farmers

Methodology:

Considering, size of a farm reservoir (FR) 6 m×6 m with a depth of 2 m having side slope 1:1 and capacity 40 m³. Regard as 225 m² service area (crop area) as catchment area to collect runoff for FR. FR area was 18% of the service area. Three reservoirs were selected for rainfall and runoff collection at BRRI farm, Sonagazi, which were previously constructed. Rainfall and storage were measured by rain gauge and staff gauge. Twenty five centimeter height embankment was constructed to store 12.03 m3 (52.03-40.00 m³) extra rainwater than that of the FR capacity. Two inlets were provided in FR to collect runoff. When FR was filled up to the soil surface, then inlets were closed. On the other hand, in rabi season a survey was conducted for recording the information on use of pond for irrigation and cropping pattern in the locality. Initially data were collected from 10 farmers through personal interview to know the existing pond characteristics, cropping pattern and pond utilization.

Source of Information: Proceedings of BRRI Annual Internal Research Review, 2008-2009

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Knowledge Management: Report/Proceedings