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Impact of Irrigation Schedules on Seed Yield, Water Use and Water Productivity of Some Mustard Mutants

Dr. M. H. Ali

A.A.Sarkar

M. H.Zaman

M. A. Rahman

Abstract/ Executive Summary:

Field experiment was conducted at three locations to study the impact of different irrigation schedules on the crop growth, yield, evapo-transpiration and water productivity of some mustard mutants/cultivars. The effect of three irrigation regimes viz. irrigation at vegetative stage, irrigation at flowering stage, irrigation at vegetative plus flowering stage, along with a no irrigated plot (control) were tested. The results revealed that two irrigations applied at vegetative and flowering stages produced the highest yield and one irrigation at vegetative or flowering stage produced comparable yield (not statistically different from that of 2 irrigations in most cases). The irrigation water productivity was higher with one irrigation at vegetative stage for all locations. Considering the irrigation water use, yield and irrigation water productivity, it can be concluded that mustard should be irrigated twice at vegetative and flowering stages. Considering water economy, specially where groundwater withdrawal causes ecological unbalance, mustard should be irrigated at vegetative stage for optimum yield.

Keywords: Mustard, Irrigation, Evapo-transpiration, Water productivity

Location: Ishurdi, Magura, and Rangpur

Start Date: 00-00-2007

End Date: 00-00-2008

Program Area: Crop-Soil-Water Management

Commodity: Irrigation scheduling

Objectives:

To study the impact of different irrigation schedules on seed yield, water use and water productivity of mustard mutants developed at the Bangladesh Institute of Nuclear Agriculture (BINA) with a view to determine the optimum irrigation schedule of the cultivars.

Methodology:

Field experiments were carried out during 2007-08 at three BINA sub-stations - Ishurdi, Magura and Rangpur. The soils are calcareous silt-loam, loam, and sandy loam at Ishurdi, Magura, and Rangpur, respectively.

Experimental design and Treatments: The experimental design was randomized complete block (RCB) with split-plot arrangements of the treatments. Irrigation treatments were allocated in the main plots (6 m x 5 m) and the mustard mutants were in the sub-plots (5 m x 2 m), with three replications. The experiments were conducted with same design and treatments. The irrigation treatments were:

T₀ = Control (no irrigation)

T₁ = Irrigation at vegetative stage (25–30 days after sowing, DAS)

T₂ = Irrigation at flowering stage (45–50 DAS)

T₃ = Irrigation at vegetative stage (25–30 DAS) and flowering stage (45–50 DAS)

The mustard mutants/cultivar were: V₁ = MM014 – 02; V₂ = MM2 – 16– 98 and V₃ = Binasharisha -3 (Check variety).

Source of Information: Bangladesh J. of Nuclear Agric., 27 & 28: 63-72,(2013)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It can be concluded that mustard should be irrigated twice at vegetative and flowering stages. Considering water economy, specially where groundwater withdrawal causes ecological unbalance, mustard should be irrigated at vegetative stage for optimum yield.

Knowledge Management: Journal