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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

T.K. Dey
Chief Scientific Officer
Plant Pathology Division, BARI, Gazipur

Abstract/ Executive Summary:

An experiment was conducted during rabi cropping season (2010-2011) 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.; Rexral 50WP, Paramil 72 WP, Carbaman 75 WP, Superzim 50WP, Aidmil 72WP, Rodhokhshodhok 75 WP, Geenezeb 80 WP, Majormil MZ 72 WP, Sunzeb 75 WP 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 in Rexral treated plot followed by Aidmil. The highest fruit yield (28.95 t/ha) was obtained from Rexral followed by Aidmil (27.40 t/ha) treated plots. Whereas the lowest yield (18.64 t/ ha) was obtained from the control plot.

Keywords: Tomato, Early blight, Fungicides

Location: BARI, Gazipur

Start Date: 00-00-2010

End Date: 00-00-2011

Program Area: Pest Management

Commodity: Fungicide

Objectives:

To study the effectiveness of some new fungicides against early blight of tomato during two consecutive rabi seasons during 2010-2011

Methodology:

The experiment was conducted at BARI farm, Joydebpur during winter 2010-11 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, Rexral 50WP, Paramil 72 WP, Carbaman 75 WP, Superzim 50WP, Aidmil 72WP, Rodhokhshodhok 75 WP, Geenezeb 80 WP, Majormil MZ 72 WP, Sunzeb 75 WP 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.

Source of Information: Annual Report 2010-11, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

All the test fungicides significantly reduced the disease saverity as compared to control. The highest disease reduction was recorded on Rexral treated plot followed by Aidmil and Geenezeb treated plots, respectively. However, Rexral, Aidmil,Carbaman and Geenezeb had statistically similar effect on PDI as compared to control. The fungicides did not have any significant effect on plant height. The highest number of fruit/plant was recorded on Rexral treated plot which was statistically similar with Aidmil treated plots. The highest fruit yield (t/ha)) was obtained from Rexral(28.95 t/ha) and Aidmil(27.40 t/ha) treated plots. Whereas the lowest yield (18.64 t/ha) was obtained from the control plot.

Knowledge Management: Report/Proceedings