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Efficacy of Two Fungicides and Two Botanicals to Control Foot and Root Rot Disease (sclerotium Rolfsii) of Cowpea

M. Z. Rahman
RARS, BARI, Hathazari, Chittagong

A.H. M. Mafuzul Haque
PRS, BARI, Gazipur

M. A. Zaman
RARS, BARI, Hathazari, Chittagong

M. F. Amin
CSISA, IRRI,

A. K. Das
RARS, Rahmatpur, Barisal, Bangladesh

Abstract/ Executive Summary:

The effect of two fungicides Provax-200 (Carboxin + ThiraC) @ 0.25%, and Bavistin 50 WP (Carbedazim) @ 0.25 %, two botanicals, Neem leaf extract (1:1), and Garlic clove extract (1:1) along with Clean seed and Control (Untreated seed) were tested under field conditions to control foot and root rot disease (Sclerotium rolfsii) of cowpea. Among the treatments Provax-200 was the most effective followed by Bavistin 50 WP, Neem leaf extract and Garlic extract with respect to disease reduction and increase of seed yield. Maximum germination (85.53%), disease reduction (40.67%) and seed yield (1353 kg/ha) were obtained when seed was treated with Provax-200 @ 0.25 % followed by Bavistin 50 WP @ 0.25 %.

Keywords: Provax-200, Bavistin 50WP, Neem leaf extract, Garlic extract, Foot and root rot, Control, Cowpea

Location: Regional Agricultural Research Station, BARI, Hathazari, Chittagong

Start Date: 00-00-2009

End Date: 00-00-2011

Program Area: Pest Management

Commodity: Cowpea

Objectives:

To evaluate the efficacy of seed treatment with two fungicides and two botanicals for control of foot and root rot disease caused by S. rolfsii of cowpea.

Methodology:

Two fungicides namely Provax-200 (Carboxin + Thiram) @ 0.25%, and Bavistin 50 WP (Carbedazim) @ 0.25%, and two botanicals namely Neem leaf extract (1:1), and Garlic clove extract (1:1) were tested in the experiment in six different treatments. The treatments (including control were Provax-200, Bavistin -50 WP, Neem (Azadirachta indica) leaf extract (1:1), Garlic (Allium sativum) clove extract (1:1), seed cleaning and control (untreated seed). The experiment was conducted at the Regional Agricultural Research Station, BARI, Hathazari, Chittagong during 2009-10 and 2010-11cowpea growing seasons. Cowpea variety BARI Felon-1 was used in the experiment. Size of unit plot was 4.0 m x 4.0 m and plant to plant spacing was 50 cm x 10 cm. The experiment was conducted under natural infection condition. Recommended doses of fertilizers and manure were used. Irrigation and weeding were done as and when necessary. Seeds of a cowpea variety (BARI Felon-1) were treated with the fungicides separately @ 2.5 g/kg (0.25%) before sowing. Required amount of seeds and individual fungicides were taken in a conical flask, few drops of sterilized water were added and shaken well with hands for 10 minutes. To prepare the standard plant extracts solution (100%), fresh leaves of Neem leaf and garlic cloves were collected, washed and crushed with sterilized distilled water at rate of one gram tissue in one milliliter of water (1:1w/v) separately as described by Shindhan et al. (1999). Seeds were uniformly coated with the plant extracts. Required amount of seeds and individual plant extract were taken in a conical flask and thoroughly mixed by shaking with hands for 10 min. In other two treatments clean seeds and seeds washed with sterilized distilled water (control) were used. Treated seeds were air dried for 30 min and sown in the field. The experiment was carried out in randomized complete block design with three replications. Data on germination, pre-emergence mortality and post-emergence mortality, yield and yield contributing character of the plant were recorded. The data were analyzed statistically.

Source of Information: Bangladesh J. Plant Pathol. Vol. 28 (1&2): 29-32.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Findings of the present study indicated that significant reduction of seedling mortality and thereby increased germination and crop yield of cowpea can be achieved with seed treatment with fungicides as well as botanicals. On the basis of the findings of two year’s experiment, it can be noted that Provax-200 and Bavistin 50 WP were effective to control foot and root rot disease and to increase germination and seed yield of cowpea..

Knowledge Management: Journal