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Efficacy of New Fungicides for Controlling Alternaria Blight of Cabbage

R. Islam
Plant Pathology Division, BARI

M. I. Faruk
Plant Pathology Division, BARI

M. A. Rahman
Plant Pathology Division, BARI

Abstract/ Executive Summary:

Five fungicides namely, Upral 50 WP, Anoral 50 WP (Iprodione 50 WP), Avance 25 EC (Propiconazole 25), Zebthrine M 80 WP (Mancozeb 80 WP) and Rovral 50 WP were evaluated against Altenaria blight of cabbage (Alternaria. brassicicola) in field experiment. The control plot was sprayed with plain water. Fungicide were sprayed at 12 days interval starting from the onset of disease and continued up to head maturity. All the fungicide significantly reduced disease severity and increased yield compared to control. Among them, Rovral 50 WP and Upral 50 WP gave the highest disease reduction followed by Anoral 50 WP. Rovral gave 60.86 % disease reduction and 47.46 % higher yield followed by Upral 60.44% disease reduction and 42.70% yield increased. Other fungicides gave 38 - 55% disease reduction with 25-41% yield increase over control.

Keywords: Fungicides, Alternaria blight, Cabbage

Location:

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Pest Management

Commodity: Diseases, Cabbage

Objectives:

To test the effectiveness of some new imported fungicides to control alternaria blight of cabbage

Methodology:

Thirty days old seedlings were transplanted on November 10, 2013 in 2.5 m x 1.2 m unit plot laid out in RCB design with three replications. Ten seedlings were planted in each plot in two rows at 50 cm x 40 cm spacing. Cabbage head were incised on January 15, 20014 and first visible disease symptom appeared on January 30, 2014. Data on percent infection, and head yield per plot were recorded and statistically analyzed.

Source of Information: Annual Research Report, Plant Pathology Division, BARI--2013-14

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

All the fungicide significantly reduced disease severity and increased yield compared to control. Among them, Rovral 50 WP and Upral 50 WP gave the highest disease reduction followed by Anoral 50 WP. Rovral gave 60.86 % disease reduction and 47.46 % increased in.yield. Rovral Performed best for reducing the disease incidence and increasing yield. Among the new fungicides, Upral 50 WP and Anoral 50 WP decreased disease incidence and increased yield compared to control treatment and their efficacy at per with Rovral (check).

Knowledge Management: Report/Proceedings