Ocurrence of in Phakopsora euvitis Ono young leaves of grapevine plants
DOI:
https://doi.org/10.31416/rsdv.v1i1.211Keywords:
Vitis labrusca, rust, incidenceAbstract
Grapevine rust caused by Phakopsora euvitis Ono occurs preferentially in mature leaves, causing early defoliation of infected plants, affecting fruits and branches maturation in the following seasons. The objective of this study was to report the occurence of P. euvitis in young leaves of commercial planting of ‘Isabel’ grape plants. In
Natuba, State of Paraíba, Brazil. Samples of young leaves were collected in four different production areas and sent to the Laboratory of Phytopathology, CCA/UFPB for optical microscopy analysis. The determination of the calculation of
incidence was carried out according to sampling methodology of grapevine diseases defined by the Integrated Fruit Production: grape IFP. After viewing in blades, the presence of yellowing pustules was confirmed, characteristics of the
rust in samples of young leaves of the vine of the four areas assessed. The incidence of rust rating of the four areas
assessed was 42.2%
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