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Effect of Seed-borne Fungi on the Germinating Seeds and Their Bio-control in Maize

M. Debnath
Seed Pathology Center, Bangladesh Agricultural University, Mymensingh

A. Sultana
Seed Pathology Center, Bangladesh Agricultural University, Mymensingh

A. Q. M. B. Rashid
Seed Pathology Center, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

An experiment was conducted in Seed Pathology Center, Bangladesh Agricultural University, Mymensingh to determine the efficacy of biocontrol means (BAU-Biofungicide, Garlic extract and Neem extract) in controlling seedborne fungal diseases of maize (Zea mays). In laboratory experiment, the seeds of maize cultivars cv. Badsha-1, Khai Bhutta, Bornali, Mohor, BARI Bhutta- 5 and BARI Bhutta- 6 were tested by blotter method. The identified fungi associated with the seeds were A. niger, A. flavus, Fusarium sp., P. oxalicum, C. lunata and R. stolonifer. The seed samples were treated with BAU-Biofungicide @ 2.5% of seed weight, neem extract@ 1:2 w/v and 1:3 w/v and garlic extract @ 1:2 w/v and 1:3 w/v to control the seed-borne pathogens. The effective results were recorded as regards to the highest germination (84.5%) reflected the lowest disease incidence (4.0%) recorded in BAUBiofungicide treated seeds followed by other treatment.

Keywords: BAU-Biofungicide, Germination, Seed borne pathogen

Location: Seed Pathology Center, Bangladesh Agricultural University, Mymensingh

Start Date: 00-11-2010

End Date: 00-05-2011

Program Area: Seed Technology

Commodity: Maize

Objectives:

1. To determine the efficacy of biocontrol means (BAU-Biofungicide, Garlic extract and Neem extract) in controlling seedborne fungal diseases of maize (Zea mays).

Methodology:

Six maize cultivars collected from BADC of maize growing areas such as Mymensingh, Dinajpur, Madupur, Rangpur and Gazipur. The varieties were Badsha- 1, Khai Bhutta, Bornali, Mohor, BARI Bhutta- 5 and BARI Bhutta- 6. The seed samples preserved and tested in Seed Pathology Center, Bangladesh Agricultural University, Mymensingh during 2010-11. Seed health test was done by standard blotter method. The seedborne fungal pathogen associated with seeds was observed by stereobinocular microscope. BAU-Biofungicide was collected from the Diseases Resistance Laboratory; Garlic and neem extracts were prepared in the Plant Disease Clinic, Department of Plant Pathology, BAU, Mymensingh. One hundred seeds of six varieties were treated with each of BAU-Biofungicide @ 2.5% of seed weight, neem extract@ 1:2 w/v, 1:3 w/v and garlic extract @ 1:2 w/v and 1:3 w/v to control the seed borne pathogen. The experiment was designed following CRD having four replications and six treatments, where T₁= Seed treatment with garlic extract @ 1:2 w/v, T₂= Seed treatment with garlic extract @ 1:3 w/v, T₃= Seed treatment with neem extract @ 1:2 w/v, T₄ =Seed treatment with neem extract @ 1:3 w/v, T₅ =Seed treatment with BAU-Biofungicide (2.5% of seed weight), and T₀ = Control

Source of Information: J. Environ. Sci. & Natural Resources, 5(1): 117 - 120, 2012; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The effective results were recorded as regards to the highest germination (84.5%) reflected the lowest disease incidence (4.0%) recorded in BAUBiofungicide treated seeds followed by other treatment.

Knowledge Management: Journal