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Effect of Seed Treatment on the Incidence of Seed-borne Diseases of Okra

M. K. Anam
Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh.

G. A. Fakir
Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh.

K. M. Khalequzzaman
Scientific Officer
Plant Pathology Division, Bangladesh Agricultural Research Institute, Bogra, Bangladesh.

M. M. Hoque
Plant Quarantine Centre, DAE, Benaple, Jessore, Bangladesh.

Abdur Rahim
OFRD, Agrucultural Research Station, Bangladesh Agricultural Research Institute, Bogra, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted to find out the effect of seed treatment on the incidence of seed-borne fungal diseases and on production of seed yield of okra. The lowest germination (95.0%) was recorded in unclean farmer’s seeds; while highest germination (99.0%) was recorded in Vitavax-200 treated seeds followed by clean apparently healthy seeds (98.5%). Seed-borne fungal diseases of okra in the field, five diseases viz. Foot and root rot, Anthracnose and die-back, Cercospora leaf spot, Corynespora leaf spot and leaf blight, respectively caused by Fusarium oxysporum, Colletotrichum dematium, Cercospora abelmoschi, Corynespora cassiicola and Macrophonina phaseolina were recorded. The incidence of five seed-borne diseases were found to be reduced by the use of seeds treated with Vitavax-200 and clean apparently healthy seeds. Vitavax–200 treated seeds as well as clean apparently healthy seeds increased the seed yield by 21.62 and 15.31%, respectively, over the unclean farmers’ seeds.

Keywords: Okra, Seed treatment, Seed-born fungal

Location: Field Laboratory and Seeds Pathology Laboratory (SPL) of the Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh.

Start Date: 00-05-2000

End Date: 00-10-2000

Program Area: Pest Management

Commodity: Okra

Objectives:

To study the effect of seed treatment on the incidence of seed-borne fungal diseases and on production of seed yield of okra.

Methodology:

The experiment was conducted in the Field Laboratory and Seeds Pathology Laboratory (SPL) of the Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh during May-October 2000. A local variety of okra called “Pusa Sawami” was used for this study. The field experiment was carried out in randomized complete block design (RCBD). The treatments were T₁-(uclean farmer’s seeds), T₂-(clean apparently healthy seeds) and T₃-(vitavax-200 (0.2%) treated seeds). The size of the unit plot was 2 x 1m². Fertilizers were applied at the rate of 150 Kg urea, 100 kg TSP and 150 Kg MP per hectare. Weeding and other intercultural operations were done time-to-time. The fungal organisms were isolated from the diseased plant parts on PDA. The fungal organisms grown out from the plated diseased plant parts, were sub-cultured, purified and preserved. The fungal isolates were then identified to species level with the help of relevant keys. Data were recorded on germination, percentage of foot and root rot, percentage of infected plants, percentage of leaf infection, disease severity and seed yield. Percent disease severity was estimated. The collected data were subjected to statistical analysis using analysis of variance to find out the variation resulting from experimental treatments. Treatment means were compared by Duncan’s multiple range test with least significant difference (LSD).

Source of Information: Pakistan Journal of Plant Pathology, 1(1): 1-3, 2002

Article Link (Online Journal): DOI: 10.3923/ppj.2002.1.3; URL: http://scialert.net/abstract/?doi=ppj.2002.1.3

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the study, it might be concluded that, clean apparently healthy seeds and Vitavax-200 treated seeds gave better results by disease reduction and gave higher seed yield. This finding to be disseminated to reduce seed-borne diseases and to increase seed yield production of okra.

Knowledge Management: Journal