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Optimum Irrigation Requirement of Wheat for Achieving Maximum Yield at Rajshahi-2000

Dr. M A Sattar
CSO and Head
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

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

Abstract/ Executive Summary:

The experiment was conducted at BRRI farm, Rajshahi to determine the optimum number of irrigation requirement for maximum yield, to find out yield difference among the treatments and to determine the total amount of water use for different level of treatments during rabi season 1999-2000.The soil was sandy loam.The treatments were:T₁= No irrigation,T₂=irrigation at CRI (20 DAS),T₃=irrigation at CRI and maximum tillering stage (20 and 40 DAS),T₄=irrigation at CRI, maximum tillering and booting stage (20, 40 and 60 DAS),T₅= Four irrigation at 20, 40, 60 and 70 DAS and T₆=Five irrigation at 20, 40, 60, 70 and 80 DAS.The experiment in Rajshahi was established on Dec 8, 1999 (late sowing). The total rainfall during crop season was 74 mm. The highest yield of 3.0 t/ha was obtained from 4 irrigation. The total amount of water was used 350 mm. The percent yield increased by 4 irrigation was about 100 compared to rainfed condition. However, under 5 irrigation from the experimental result shows that there was no significant yield increased as compared to 4 irrigation. Therefore, it is concluded that maximum wheat can be achieved by 4 to 5 irrigation.

Keywords: Barind area, Rainfed, Supplemental irrigation

Location: At BRRI farm, Rajshahi

Start Date: 01-07-1999

End Date: 30-06-2000

Program Area: Crop-Soil-Water Management

Commodity: Water management

Objectives:

To determine the optimum number of irrigation requirement for maximum yield
To find out yield difference among the treatments
To determine the total amount of water use for different level of treatments

Methodology:

The experiment was conducted at BRRI farm, Rajshahi during rabi season 1999-2000. The soil was sandy loam.The treatments were:T₁= No irrigation,T₂=irrigation at CRI (20 DAS),T₃=irrigation at CRI and maximum tillering stage (20 and 40 DAS),T₄=irrigation at CRI, maximum tillering and booting stage (20, 40 and 60 DAS),T₅= Four irrigation at 20, 40, 60 and 70 DAS and T₆=Five irrigation at 20, 40, 60, 70 and 80 DAS. Wheat was sown on December 8. The amount of water applied for each irrigation was measured and the rainfall was recorded for the crop growing season. The amount of water applied for each irrigation was measured and the rainfall was recorded for the crop growing season.

Source of Information: Proceedings of the BRRI Annual Review for 2000, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The experiment in Rajshahi was established on Dec 8, 1999 (late sowing). The total rainfall during crop season was 74 mm. However the rain mainly occurred at the reproductive of wheat which helped increasing yield under rainfed condition. The highest yield of 3.0 t/ha was obtained from 4 irrigation. The total amount of water was used 350 mm. The percent yield increased by 4 irrigation was about 100 compared to rainfed condition. However, under 5 irrigation from the experimental result shows that there was no significant yield increased as compared to 4 irrigation. Therefore, it is concluded that maximum wheat can be achieved by 4 to 5 irrigation.

Knowledge Management: Report/Proceedings