DINÂMICA DE INÓCULOS E DOENÇAS EM VIDEIRA SOB SISTEMA CONVENCIONAL E PROTEGIDO

Abstract

The effect of the covered and conventional cultivation of grapevine (cv. Superior Seedless) on the aerial dispersion of pathogen inoculum and dynamic of diseases was investigated in two-year (2009 and 2010) and period similar to the year. The experiment was conducted at the experimental station of Embrapa semiarid. The traps were maintained at 0.5 meters above the canopy of the grapevine, and the samples taken every 24 hours with the exchange of slides 9:00 a.m. Greater dispersion of pathogens (Plasmopara viticola, Phakopsora euvitis, Alternaria alternata) and intensity of diseases (downy mildew, rust, and bacterial canker) were detected in grapevines under conventional cultivation. The aerial dispersal of the fungus Lasiodiplodia theobromae was similar under grapevine covered and uncovered.