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Efficacy In-vivo of Different Fungicides in Controlling Stemphylium Blight of Lentil During 1998-2001

M. Ihsanul Huq
Plant Pathology Division, RARS, Rahmatpur, Barisal

A. Z. M. Nowsher Ali Khan
Department of Botany, Dhaka University, Dhaka-1000, Bangladesh

Abstract/ Executive Summary:

In an experiment with seven different fungicides such as Rovral 50WP @ 0.2 %, Dithane M-45 @ 0.2 %, Tilt 250 EC @ 0.05 %, Cupravit @ 0.3 %, Macuprax @ 0.25 %, Ridomil MZ-72 @ 0.2 % and Bavistin 50WP @ 0.15 % were tested in the field during 1998-2001 to control Stemphylium blight lentil. Among the fungicides Rovral 50WP @ 0.2 % was noted as the most effective fungicide followed by Dithane M-45 @ 0.2 % and Tilt 250EC @ 0.05 %.

Keywords: Efficacy different fungicides, Stemphylium blight, Lentil

Location: Plant Pathology Division, RARS, Rahmatpur, Barisal

Start Date:

End Date:

Program Area: Pest Management

Commodity: Lentil

Objectives:

To determine the efficacy in-vivo of Different Fungicides in Controlling Stemphylium Blight of Lentil.

Methodology:

The experiment was conducted under natural epiphytotic condition. The experiment was laid out in a piece of land following RCB design with three replications (Zaman, et. al., 1982). The unit plot size was 4m x3m with 25cm row to row spacing. A susceptible genotype L-81124 was sown on November 23. Seven fungicides and one control comprised eight treatments. The fungicides included were Rovral 50WP @ 0.2 %, Dithane M-45 @ 0.2 %, Bavistin 50WP @ 0.15 %, Cupravit @ 0.3 %, Tilt 250EC @ 0.05 %, Macuprax @ 0.25 % and Ridomil MZ-72 @ 0.2 %. Concentration of fungicides and their active ingredients. The experiment was kept under constant observation. First spray was given just after the appearance of disease symptom in the field. Four sprays were given at an interval of 15 days. Data were recorded before every spray using 1-9 scoring scale from 25 randomly tagged plants/plot. Percent Disease Index (PDI) was computed according to the formula as described below (Wheeler, 1969) and calculated based on the final data recorded at 15 days after the last spray.Data were recorded on yield and yield attributes after necessary sun drying. Yield increase over the control was calculated. All data were analyzed statistically and means were compared by DMRT (Steele and Torrie, 1980). The correlation among percent yield increased over control and percent disease control was calculated.

Source of Information: Bangladesh J. Sci. Ind. Res. 42(1), 89-96, 2007

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Among the fungicides Rovral 50WP @ 0.2 % was noted as the most effective fungicide followed by Dithane M-45 @ 0.2 % and Tilt 250EC @ 0.05 %.

Knowledge Management: Journal