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Management of Bacterial Leaf Blight of Mango Through Antibiotics and Bio-fungicide

R. P. Basak
MS student
Plant Pathology Division,Bangladesh Agricultural University, Mymensingh, Bangladesh

Dr. M. A. Kashem
Principal Scientific Officer
Plant Pathology Division,Bangladesh Instutite of Nuclear Agriculture, BAU Campus, Mymensingh-2202

Abstract/ Executive Summary:

An experiment was conducted in the net house, Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh during 15 July 2012 to June 2013 to find out the efficacy of antibiotics and biofungicide for controlling bacterial leaf blight of mango. Six treatments were applied viz. i) T₁=Gentamycin @ 0.05%, ii) T₂=Erithromycin @ 0.05%, iii) T₃=Doxycycline @ 0.05%, iv) T₄=Copper sulphate @ 0.05%, v) T₅=BAU-Biofungicide @ 2% and vi) T₆=Control. The treatment BAU-Biofungicide was found good in controlling bacterial leaf blight of mango. This treatment increased 23.71% plant height, 53.33% branch over control and reduced 39.31% disease incidence and 48.50% disease severity when applied as foliar spray @ 2%. The second best control measure was found by Gentamycin as it reduced 28.46% disease incidence and 46.43% disease severity when applied as foliar spray @ 0.05%, although other treatments reduced incidence and severity of bacterial leaf blight which were applied as foliar spray @ 0.05%.

Keywords: Management, Bacterial leaf blight, Mango, Antibiotics, Bio-fungicide

Location: Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Start Date: 01-07-2012

End Date: 01-06-2013

Program Area: Pest Management

Commodity: Mango

Objectives:

To evaluate some antibiotics and biofungicide for controlling bacterial leaf blight of mango

Methodology:

The experiment was carried out in the net house, Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh during July 2012 to June 2013. Mango (Variety: Amropali) seedlings were collected from Vai-Vai nursery, Shamvuganj, Sadar upazila, Mymensingh on 16 July 2012. The collected seedlings were found to infection with Bacterial Leaf Blight disease. The soil of pot prepared by mixing 50% cowdung, 50% soil and with inorganic fertilizer (Urea, Mop). Soils were prepared 10 days prior to transplanting. On 12 August these mango seedlings were transplanted. For the control of Bacterial Leaf Blight (BLB), six different treatments were employed as foliar spray. The experiment was laid out in Completely Randomized Design (CRD) with three replications. The treatments were: T₁= Gentamycin (0.05%), T₄= Copper sulphate (0.05%), T₂= Erithromycin (0.05%), T₅= BAU-Biofoungicide ( 2%), T₃= Doxycycline (0.05%), T₆= Untreated control. For the preparation 0.05% spray solution of Gentamycin, Erithromycin, Doxycycline and Copper sulphate. 0.5 gm of each chemical was dissolved in 1000 ml of water to make 0.05% of spray solution. For making 2% spray solution of BAU-Biofungicide, 20 gm of BAU-Biofungicide were dissolved in 1000 ml of water to make the spray solution 2%. The following data were collected: Height of the seedlings, Number of branch, Number of leaves, Disease incidence and diseased severity. Disease incidence and severity were calculated using formula of Galanihe et al., 2004.

Source of Information: Research on crops journal 15 (2):383-388

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The treatment BAU-Biofungicide was found good in controlling bacterial leaf blight of mango. This treatment increased 23.71% plant height, 53.33% branch over control and reduced 39.31% disease incidence and 48.50% disease severity when applied as foliar spray @ 2%. The second best control measure was found by Gentamycin as it reduced 28.46% disease incidence and 46.43% disease severity when applied as foliar spray @ 0.05%, although other treatments reduced incidence and severity of bacterial leaf blight which were applied as foliar spray @ 0.05%.

Knowledge Management: Journal