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STEM BLEEDING INCIDENCE OF COCONUT IN HAMBANTOTA DISTRICT

Authors:

H. R. T. Wijesekara ,

COCOS, LK
About H. R. T.
Coconut Research Institute, Lunuwila, Sri Lanka.
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C. N. K. Rajapakse,

About C. N. K.
Coconut Research Institute, Lunuwila, Sri Lanka.
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L. C. P. Fernando,

About L. C. P.
Coconut Research Institute, Lunuwila, Sri Lanka.
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C. K. Jayasinghe,

About C. K.
Department of Plant Pathology, Rubber Research Institute, Dartonfield,
Agalawatta, Sri Lanka.
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S. P. Manoher,

About S. P.
Coconut Research Institute, Lunuwila, Sri Lanka.
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K. F. G. Perera

About K. F. G.
Coconut Research Institute, Lunuwila, Sri Lanka.
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Abstract

A heavy incidence of stem bleeding in coconut palms was reported
during 1995 in Hambantota District, Sri Lanka. Palm to palm survey and
laboratory investigations were conducted to determine the incidence,
distribution, and cause of the epidemic. The survey revealed that 10% of the
palms in the district was affected. The stem-bleeding incidence was higher in
palms closer to water bodies and irrigation channels in the area. The
investigations were unable' to establish the cause of stem bleeding. The
distribution pattern of affected palms suggests that irrigation water may cause
stem bleeding and predispose palms to the infection by Ganoderma sp. The
fungus Ganoderma, which causes bole and root rot disease of coconut was
consistently isolated from the palms with fruiting bodies, and authenticity of
the pathogen was proved by the International Mycological Institute, UK.
Further studies are necessary to determine the role of water bodies in
predisposing the palms to the disease.
How to Cite: Wijesekara, H.R.T. et al., (2010). STEM BLEEDING INCIDENCE OF COCONUT IN HAMBANTOTA DISTRICT. COCOS. 13, pp.21–29. DOI: http://doi.org/10.4038/cocos.v13i0.2173
Published on 11 Aug 2010.
Peer Reviewed

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