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Survey the Prevalence of Market Diseases of Banana

Md. Anwarul Haque
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

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

Md. Shariful Islam
Department of Biochemistry, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

M. M. Hossain
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

Abstract/ Executive Summary:

Market diseases of banana were surveyed in three markets of Mymensingh town. Anthracnose and botryodiplodia rots were detected as the main cause of market rots of banana fruits. About 2.04-4.90% fruits were rotted during April-September due to anthracnose and 2.96-4.74% owing to botryodiplodia rots. Both the diseases clearly correlated positive with temperature. The causes of anthracnose and botryodiplodia rots were identified as Colletotrichum musae and Botryodiplodia theobromae, respectively.

Keywords: Survey, Prevalence, Anthracnose, Botryodiplodia rot, Banana

Location: Mesua bazar, Natun bazar and some selected shops of BAU campus markets of Mymensingh.

Start Date: 00-04-2001

End Date: 00-09-2001

Program Area: Socio-economic and Policy

Commodity: Diseases, Banana

Objectives:

i) To survey the market diseases,

ii) To estimate the loss and severity and

iii) To identify the causal organisms.

Methodology:

Survey was made during the period of April to September 2001. Survey on the post-harvest diseases of banana was done in the market of Mymensingh town. Three sites were selected in Mesua bazar, Natun bazar and some selected shops of BAU campus markets of Mymensingh. Four shops were selected from each market. Each of the selected areas was inspected four times in each month. Banana var. Sabri was selected for the survey. Anthracnose and fruit rot symptoms were surface sterilized with cotton swab (70% alcohol). Small pieces (2-3 cm) of fruit tissues at the junction of diseased and healthy portion were cut out aseptically. Inocula thus prepared were transferred to Potato Dextrose Agar (PDA) plates following Tissue Plating Method and kept there for incubation at 25-28°C for 7 days. Daily observation was made for the fungal growth. The fungi were transferred to fresh culture plates from sub-cultures for purification. The fungi were studied and identified by observing colony characters, linear growth, color and sporulation. The pathogenicity of the isolated fungi Colletotrichum musae and Botryodiplodia theobromae were tested on banana fruits. The experiment was designed in Completely Randomized Design. All the treatments were replicated three times. Diseases were recorded on ripe fruits of banana in the market. During survey in the market, fungal diseases were identified by visual symptoms. Again fungal diseases were categorized according to different symptoms. At the time of disease recording, the following points were considered carefully spot/lesion, size of the spot, number of lesion, area diseased, color of the spot/lesions. Data were collected after the untreated fruits expressed symptoms. Percent fruits infected were calculated on the basis of totality of healthy and diseased fruits. Total surface area of an individual fruit was considered as 100%. The diseased portion of an individual fruit was recorded.

Source of Information: Pakistan Journal of Plant Pathology, 2(3): 169-173, 2003

Article Link (Online Journal): DOI: 10.3923/ppj.2003.169.173; URL: http://scialert.net/abstract/?doi=ppj.2003.169.173

Funding Source:

1.	Budget:
2.	Budget:

Total Budget (Tk.) :

Achievement/Findings:

Findings of the present study revealed that about 2.04-4.90% fruits were rotted during April-September due to anthracnose and 2.96-4.74% owing to botryodiplodia rots. Both the diseases positively correlated with temperature. The causes of anthracnose and botryodiplodia rots were identified as Colletotrichum musae and Botryodiplodia theobromae, respectively.

Knowledge Management: Journal