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Rain Water Collection and Conservation in Farm Reservoir for Drought Alleviation (rlrrc)-1992

Dr. M Towfiqul Islam
SSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

M Nurul Islam
CSO & Head
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Dr M Nazmul Hasan
PSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

A survey was conducted during Dec 1991 to Jan 1992 in the vicinity of research site to assess the relevance of on-farm reservoir for collecting and conserving rain water in different landscape conditions, to establish a rational design of such water collection mechanism for small farm conditions to allow supplemental irrigation at critical drought periods and to assess the profitability of providing supplemental irrigation (s) using collected and conserved water. Forty farmers with FRs were purposely selected from the 10 village of Paba and Godagari thana. Primary data were collected on physical features of the FRs, water utilization, productivity and profitability. Average FR users own 1.19 FR’s on their farm located mostly at the middle and lower portion of the farms. A FR may have surface area anywhere from 450 to 4215 sq.m with an average of 673 sq.m. The FR users obtained about 300 kg/ha higher rice yield than the non users. In 1991 the yield difference between the FR users and non users was not high due to favourable rainfall in the aman season. The survey showed that the FR owners also cultured fish in the FR and used the water for domestic purpose. Because of the optimum time of transplanting in South plot, its yield potential was higher. Thus the portion that received the supplemental irrigation from FR yielded 4.52 t/ha which was 40% higher than the yield of the other portion of the plot that depended purely on rainfall. This yield is 67% higher than that of the supplementary irrigated part of the east plot which was transplanted late and therefore had a lower yield potential.

Keywords: Rain water harvesting, Supplental irrigation, Drought mitigation

Location: Paba and Godagari thana, Rajshahi

Start Date: 00-12-1992

End Date: 00-01-1992

Program Area: Crop-Soil-Water Management

Commodity: Rain water

Objectives:

To assess the relevance of on-farm reservoir for collecting and conserving rain water in different landscape conditions
To establish a rational design of such water collection mechanism for small farm conditions to allow supplemental irrigation at critical drought periods
To assess the profitability of providing supplemental irrigation (s) using collected and conserved water

Methodology:

A survey was conducted during Dec 1991 to Jan 1992 in the vicinity of research site to identify farms and farmers with Farm Reservoir (s). Forty farmers with FRs were purposely selected from the 10 village of Paba and Godagari thana. Primary data were collected on physical features of the FRs, water utilization, productivity and profitability.

Source of Information: Proceedings of the BRRI Annual Review for 1992, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Middle and lower portion of the farms users own 1.19 FR’s. A FR may have surface area anywhere from 450 to 4215 sq.m with an average of 673 sq.m. The FR users obtained about 300 kg/ha higher rice yield than the non users. In 1991 the yield difference between the FR users and non users was not high due to favourable rainfall in the aman season. The survey showed that the FR owners also cultured fish in the FR and used the water for domestic purpose. South plot received the supplemental irrigation from FR yielded 4.52 t/ha which was 40% higher than the yield of the other portion of the plot that depended purely on rainfall. This yield is 67% higher than that of the supplementary irrigated part of the east plot which was transplanted late and therefore had a lower yield potential.

Knowledge Management: Report/Proceedings