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Efficacy of Amistar in Controlling Alternaria Blight and Yield of Mustard Variety Rai-5

I. Hossain*
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. Akter
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. B. Anwar
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The effect of Amistar in controlling Alternaria blight of mustard was investigated and the selected mustard variety Rai5 was used. Amistar @ 0.05% (1 spray), 0.05% (2 spray), 0.05% (3 spray), 0.1% (1 spray), 0.1% (2 spray) and 0.1% (3 spray) were sprayed at 14 days interval beginning from 40 days after sowing (DAS). Amistar resulted significant reduction of the disease Alternaria blight (Alternaria brassicae and Alternaria brassicicola) severity and increased seed yield. Out of the doses of Amistar used, 0.1% (3 spray) showed marked effect in reducing the disease over control in terms of reduction of % Alternaria blight incidence, % leaf infection and % leaf area diseased up to 90.72%, 90.42% and 98.17%, respectively as well as reduction of % siliqua infection and % area of siliqua diseased up to 96.17% and 98.80%, respectively and thus increased seed yield up to 56.47% over control.

Keywords: Alternaria blight, Amistar, Mustard, Yield

Location: Field Laboratory as well as in the Laboratory of Plant Pathology and Seed Pathology Center (SPC), Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-11-2004

End Date: 00-04-2005

Program Area: Pest Management

Commodity: Diseases, Mustard

Objectives:

To find out the efficacy of Amistar in controlling Alternaria blight of mustard and to determine the effect of Amistar on yield of mustard.

Methodology:

The experiments were carried out in the Field Laboratory as well as in the Laboratory of Plant Pathology and Seed Pathology Center (SPC), Bangladesh Agricultural University (BAU), Mymensingh. The experiments were carried out from November 2004 to April 2005. Seeds of mustard (Brassica campestris) variety Rai-5 were collected from Department of Genetics and Plant Breeding Bangladesh Agricultural University, Mymensingh. The experiment was in Completely Randomized Block Design (RCBD) with three replications. Amistar (azoxystrobin), a fungicide used in the experiment. The treatments were used in the experiment were T1 = Control (untreated), T2 = 0.05% (Single spray), T3 = 0.05% (Double spray),T4 = 0.05% (Triple spray)T5 = 0.1% (Single spray)T6 = 0.1% (Double spray) T7 = 0.1% (Triple spray). Data were collected on the following parameters: i) Plant infection (%) ii) Leaf infection (%), iii) Leaf area diseased (%), iv) Siliqua infection (%), v) Area of siliqua diseased (%), vi) Plant height (cm), vii) Number of branches/plant, viii) Total number of seeds/plant, ix) Weight of seeds/plant (g), x) Weight of seeds/plot (g) and xi) Seed yield/ha (t). Data on the first eight parameters were recorded before harvest. Progress in plant infection, leaf infection and leaf area diseased were monitored at 45 DAS, 60 DAS, and 75 DAS. Total siliqua infection and area of siliqua diseased were recorded at 70 DAS, 77 DAS, and 84 DAS. Plant height (cm) and number of branches per plant were recorded at 90 DAS.

Source of Information: J. Environ. Sci. & Natural Resources, 11(1&2):191-197, 2018 ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

According to the findings of the present study as well as the published research reports of the other workers it has been confirmed that Amistar has the strong potentiality of controlling Alternaria blight of mustard with subsequent increase of yield. Amistar can successfully be used for controlling Alternaria blight of mustard in Bangladesh.

Knowledge Management: Journal