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Efecto de Sustratos Foliares Sobre la Sigatoka Negra (Mycosphaerella fijiensis Morelet) en Banano (Musa × paradisiacaL.) y Plátano (Musa acuminata Colla)

DOI: 10.4067/S0365-28072007000400012

Keywords: chitinolytic bacteria, glucanolytic bacteria, colloidal chitin, barley flour, biological control.

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Abstract:

the black sigatoka caused by the fungus mycosphaerella fijiensis morelet, is the most destructive foliar disease in the banana (musa × paradisiaca l.) and plantain (musa acuminata colla) production around the world. chemical fungicides are the main control tactics; however, fungicide resistance had increased control costs, besides environmental contamination and consumers demands for a fruit free of pesticide residues. the enhancement of populations of native bacteria through selective substrates, with lytic activity on m. fijiensis, looks as a management alternative. application of two foliar substrates, that had a mineral solution plus urea, barley flour and colloidal chitin known to built-up biocontrol bacteria, allowed to decrease fungicide applications in from 43 to 46%, when sprayed in rotation with conventional fungicides.

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