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Effecacy of Fungicides Aganist Stemphylium Blight of Lentil.

M. Ihsanul Huq
Regional Agricultural Research Station, BARI, Rahmatpur, Barisal.

M. M. R. Talukder
Regional Agricultural Research Station, BARI, Rahmatpur, Barisal.

M. H. Rahman
Regional Agricultural Research Station, BARI, Rahmatpur, Barisal.

Abstract/ Executive Summary:

A study with three fungicides namely, Rovral 50 WP (.2), Dithane M-45, and Tilt 250 EC ( .05) and their contributions with a control was undertaken to find out their efficacy in controlling the Stemphylium blight of lentil. Among the treatments Rovral 50WP gave the best result followed by Dithane M-45 in reducing disease severity. In economics, spraying with Rovral WP gave the highest net profit of TK. 5926 followed by Dithane M-45, which gave Tk. 2353.

Keywords: Lentil, Stemphylium blight of lentil, Pulse.

Location: Regional Agricultural Research Station, BARI, Rahmatpur, Barisal.

Start Date: 01-07-2002

End Date: 30-06-2004

Program Area:

Commodity: Lentil

Objectives:

To study the effect and economics of fungicides in controlling the Stemphylium blight of lentil.
To find out their efficacy in controlling the Stemphylium blight of lentil.

Methodology:

The experiment was conducted during rabi of 2002-30 and 2003-04. The experiment was laid out in a well prepared land. The design used was RCB having 3 replications. The var./line was L-81124, which was highly susceptible to disease. Three fungicides viz., Tilt 250 EC, Dithane M-45, & Rovral 50WP (.2) and their combinations comprising five treatments such as Rovral 50 WP (.2), Tilt 250 EC (.05), Dithane M-45 (.2), Dithane M-45 (.2) + Rovral 50 WP (.2), Tilt 250 EC (.05) + Rovral WP (.2) with a control was used. Four sprays were given at an interval of 15 days, the first one being applied at the first appearance of the disease symptom. Disease data were recorded before every spray using 0-5 rating scale where 0 was considered as no infection and 5 as above 50% leaflet and 40% twigs infection. Percentage of disease index (PDI) was computed from the final data. This was recorded at 15 days after the last spray based on the formula as given. PDI = Category number x leaves on that category / Total no. leaves counted x maximum digit of the scale x 100. The crop was harvested and threshed manually. The grains were cleaned and sun dried properly. Data on 10000 seed weight and grain yield per plot was recorded.

Source of Information: Bangladesh Journal of Agricultural, Vol. 32 (1), 2007,(page no. 37-40), ISSN 0253-5408, BARC

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among the treatments Rovral 50WP gave the best result followed by Dithane M-45 in reducing disease severity. In economics, spraying with Rovral WP gave the highest net profit of TK. 5926 followed by Dithane M-45, which gave Tk. 2353.However, from the finding of the present study Rovral 50 WP (.2) may be recommended as the best fungicide to reduce disease severity,earn higher yield and more economic return.

Knowledge Management: Journal