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Efficacy of Fungicides in Controlling Early Blight of Tomato

R. Islam
Scientific Officer
Plant Pathology Division, BARI, Gazipur

K. Jahan
Scientific Officer
Plant Pathology Division, BARI, Gazipur

M.S.Hossain
Chief Scientific Officer
Plant Pathology Division, BARI, Gazipur

Abstract/ Executive Summary:

An experiment was conducted during rabi 2009-2010 to evaluate some new fungicides in controlling early blight of tomato in the field of Plant Pathology Division, BARI, Joydebpur. There were nine fungicides viz.; Encozeb, Zeemil, Kazizeb, Aidmeal, Dewthane, Topcil, Agremezeb, Agrodione, Rovral and Control. Fungicides were sprayed thrice at 15 days interval. The experiment was laid out in RCB design with three replications. The highest disease reduction was recorded on Agremezeb treated plot followed by Rovral. The highest fruit yield ( 6.46 t/ha) was obtained from Agremezeb folloe by Rovral( 6.32 t/ha) treated plots

Keywords: Tomato, Early blight, Fungicide

Location: BARI, Gazipur

Start Date: 00-00-2009

End Date: 00-00-2010

Program Area: Pest Management

Commodity: Diseases

Objectives:

To study the effectiveness of some new fungicides against early blight of tomato.

Methodology:

The experiment was conducted at BARI farm, Joydebpur during winter 2009-10 under the natural field conditions. Four weeks old seedlings of tomato cultivars Raton were transplanted at 60 cm x 40 cm spacing in 2.0 m x 1.2 m plots arranged in RCBD with three replications. Nine fungicides namely, Encozeb, Zeemil, Kazizeb, Aidmeal, Dewthane, Topcil, Agremezeb, Agrodione and Rovral were sprayed @ 2g/L, four times at 15 days interval beginning from the first appearance of the disease. In each plot 5 plant (out of 10) was randomly selected and tagged for data recording. Data on percent disease index (PDI), plant height, number of fruit/plant and fruit yield kg/ plant were recorded, per hectare fruit was calculated based on per plant fruit yield.

Source of Information: Annual Report 2009-10, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

All the test fungicides significantly reduced the disease severity as compared to control. The highest disease reduction was recorded on Agremezeb treated plot followed by Rovral and Agrodione treated plots, respectively. However, Agremezeb, Rovral, and Agrodione were statistically similar. The highest number of fruit/ plant was recorded on Agremezeb treated plot which was statistically similar with Rovral treated plots. The highest fruit yield (t/ha) was obtained from Agremezeb, Rovral and Agrodione treated plots.

Knowledge Management: Report/Proceedings