Determination of incidence, disease severity and prevalence of powdery mildew in hazelnut orchards in Düzce province
Abstract
This study was carried out to determine the incidence, disease severity and prevalence of powdery mildew disease, which turned into an epidemic disease, in hazelnut orchards of Düzce in 2016. During the survey, sampling was carried out in 800 plant plot in 62 hazelnut orchards. In the survey, approximately 1/40.000 of hazelnut plant plot in the districts have been examined. Samplings were carried out between June and July. To determine the disease severity, 40 leaves randomly were collected from 4 different direction of each plant plot, except for the two leaves at the bottom of the shoots on the branches and disease severity was evaluated according to 0-4 scale. As a result of this study, it was determined that the main pathogens of powdery mildew disease in hazelnut in Düzce were Erysiphe sp. (Section Microsphaera) and Phyllactinia guttata which were known to occur on hazelnut in Turkey. The prevalence, incidence and severity of the disease in the orchards of the province were 100%, 87.38% and 35.01%, respectively.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Authors
Publication Date
June 30, 2017
Submission Date
December 28, 2016
Acceptance Date
May 11, 2017
Published in Issue
Year 2017 Volume: 57 Number: 2
