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Impact of Supplemental Irrigation in T. Aman Cultivation an Economic Aspect by Using Shallow Tubewell

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

Abstract/ Executive Summary:

A field survey was conducted to determine efficient use and management of water for maximizing benefits in rice-base crop production and to know the impact of supplemental irrigation over Rainfed condition in 1992 T. Aman season by interviewing two categories of farmers (supplemental irrigation and Rainfed). Seventy farmers were interviewed from each group from the selected locations of Bogra, Shariakandi, Rajshahi, Naogoan, Gaibandha, Mithapukur and Thakurgoan in the vicinity of 20 STWs. The data were collected on economic aspects. The timing of farming activities from land preparation to ripening stage of T. Aman cultivation and the corresponding rainfall amount has significant impact on success of crop yield. It was found from the survey that the supplemental irrigation in T. Aman cultivation in all locations save higher economic benefit over rainfed conditions. The highest net benefit was derived Tk.17445/ha, from Gaibandha area and the second highest was Tk.11930/ha, from Rajshahi area. The B/C ratio varied from 1.5 to 2.5 from location to location for use of supplemental irrigation in T. Aman cultivation. On an average 2-3 times supplemental irrigation were used for the whole growing season. Therefore, it can be concluded that by applying supplemental irrigation with low irrigation cost using STWs farmers can be benefited and the national production can be increased.

Keywords: Supplemental irrigation, Terminal drought, BCR

Location: Bogra, Shariakandi, Rajshahi, Naogoan, Gaibandha, Mithapukur and Thakurgoan

Start Date:

End Date:

Program Area: Farm Mechanization

Commodity: Tubewell

Objectives:

To determine efficient use and management of water for maximizing benefits in rice-base crop production

Methodology:

A field survey was conducted in 1992 T. Aman season by interviewing two categories of farmers (supplemental irrigation and Rainfed) to know the impact of supplemental irrigation over Rainfed condition. Seventy farmers were interviewed from each group from the selected locations of Bogra, Shariakandi, Rajshahi, Naogoan, Gaibandha, Mithapukur and Thakurgoan in the vicinity of 20 STWs. The data were collected on economic aspects. The timing of farming activities from land preparation to ripening stage of T. Aman cultivation and the corresponding rainfall amount has significant impact on success of crop yield.

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

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It was found from the survey that the supplemental irrigation in T. Aman cultivation in all locations save higher economic benefit over rainfed conditions. The highest net benefit was derived Tk.17445/ha, from Gaibandha area and the second highest was Tk.11930/ha, from Rajshahi area. The B/C ratio varied from 1.5 to 2.5 from location to location for use of supplemental irrigation in T. Aman cultivation. On an average 2-3 times supplemental irrigation were used for the whole growing season. Therefore, it can be concluded that by applying supplemental irrigation with low irrigation cost using STWs farmers can be benefited and the national production can be increased.

Knowledge Management: Report/Proceedings