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Survey on Major Diseases of Vegetable and Fruit Crops in Chittagong Region

M. T. HOSSAIN
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Hathazari, Chittagong

S. M. M. HOSSAIN
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Hathazari, Chittagong

M. A. BAKR
Strengthening of Pulses and Oilseed Research Programmes in Bangladesh, ORC, Bangladesh Agricultural Research Institute (BARI)

A. K. M. MATIAR RAHMAN
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Hathazari, Chittagong

S. N. UDDIN
Horticulture Centre, DAE, Hathazari, Bangladesh.

Abstract/ Executive Summary:

A survey was conducted during October 2006 to June 2008 to observe disease prevalence of vegetable and fruit crops in Chittagong region. Through the survey, 24 diseases with their incidence and severity were recorded. The average higher leaf infection in early blight of potato and fruit infection in soft rot of potato were recorded 37% and 39%, respectively. The highest leaf infection (43%) of early blight of tomato that was more frequented (mode) 36% in different locations with ±0.45% ranges (Standard error) for causing the disease as recorded at Sadar Anwara upazila of Chittagong. The highest fruit infection of soft rot of potato (43%) was recorded at Dohazari, Chandanaish upazila in Chittagong. The average of higher disease severity of leaf (27%) and fruit (33%) was recorded in early blight of tomato and soft rot of potato, respectively, and the highest disease severity of leaf (29%) and fruit (35%) was recorded in Phomopsis blight and early blight of tomato and soft rot of potato, respectively.

Keywords: Diseases, Vegetable, Fruit, Survey.

Location: Chittagong region

Start Date: 00-10-2006

End Date: 00-06-2008

Program Area: Socio-economic and Policy

Non-commodity: Performance

Objectives:

The present study was undertaken to survey the information on incidence and severity of the diseases of vegetable and fruit crops in Chittagong region of Bangladesh.

Methodology:

The survey was conducted in Chittagong region during October 2006 to June 2008. The incidence and severity of different diseases were recorded. Disease assessments were done in 1000 farmers’ fields in 10 locations of 10 upazilas of Chittagong regions. The study areas were Mirjapur, Hathazari, Nazirhat, Fatikchury, Amilaish, Satkania: Dhol ghat, Patia, Sadar, Anara, Binajuri. Raozan, Ranirhat, Rangunia, Oyahedpur, Mirshary, Harabkunda, Sitakunda, and Dohazari, Chandanaish. In every area, 100 plants of vegetables and fruits were evaluated in the farmers’ fields. Diseases were recorded in Kharif and Rabi seasons both on leaf and fruit. The incidence and severity data were the mean value of leaf and fruit infection of two years’ assessment. Data were expressed in percentage. The formula in calculating the disease incidence and severity is: % Leaf/fruit infection = (Number of Leaves/Fruit infected ×100)/(Total Number of leaves/Fruit counted); PDI for severity = (Sum of all disease ratings 100)/(Total number of leaves/fruits maximum rating value) For estimation of leaf and fruit area diseased, the whole fruit and leaf surface area vas considered as 100 and thereby the infected area was determined by eye estimation for Percent of Disease Index (PDI), i.e. severity. By the scale of Islam et al. (1990) for Phomopsis blight, Nene et al. (1982) for sclerotium wilting. Anon. (1974) for early blight of tomato, Saha, (2001) for white rust and anthracnose of amaranthus and chili and Alternaria blight for radish, Goncalves et al., (1997) for leaf spot and rust for bean and anthracnose of mango, Anon. (2001) for sigatoka of banana, Kader and Ranhman (2001) for anthracnose of guava and Anon. (2008) for measuring the PDI of other diseases were maintained properly. Anthracnose of papaya and banana, stem-end rot of mango and soft rot of potato diseases were evaluated in post harvest condition collected from local market of Hathazari and Reazuddin Bazar of Chittagong. Data were analyzed for descriptive statistics, such as mean, mode, standard deviation, and standard error following Microsoft Excel package program.

Source of Information: Bangladesh J. Agril. Res. 35(3) : 423-429, September 2010 ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest fruit infection of soft rot of potato (43%) was recorded at Dohazari, Chandanaish upazila in Chittagong. The average of higher disease severity of leaf (27%) and fruit (33%) was recorded in early blight of tomato and soft rot of potato, respectively, and the highest disease severity of leaf (29%) and fruit (35%) was recorded in Phomopsis blight and early blight of tomato and soft rot of potato, respectively.

Knowledge Management: Journal