Düzce ili fındık bahçelerinde külleme hastalığının bulunma oranı, hastalık şiddeti ve yaygınlığının belirlenmesi
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2017
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Abstract
Bu çalışma 2016 yılında Düzce ili fındık bahçelerinde epidemi yapan külleme hastalığının bulunma oranının, hastalık şiddetinin ve yaygınlığının belirlenmesi amacıyla yapılmıştır. Survey çalışmaları esnasında 62 adet fındık bahçesinde 800 ocakta örnekleme yapılmıştır. Survey çalışmalarında ilçelerdeki fındık ocaklarının yaklaşık olarak 1/40.000'i incelenmiştir. Örneklemeler haziran-temmuz aylarında gerçekleştirilmiştir. Hastalık şiddetini belirlemek amacıyla her bir ocağın dört yönünden, dallar üzerindeki sürgünlerden en dipteki iki yaprak haricindeki yapraklardan tesadüfen 40'ar yaprak alınmış ve hastalık şiddeti 0-4 skalasına göre değerlendirilmiştir. Değerlendirmeler sonucunda Düzce ilinde fındıkta külleme hastalığına neden olan etmenin ülkemizde varlığı bilinen Erysiphe (Seksiyon: Microsphaera) sp. ve Phyllactinia guttata olduğu belirlenmiştir. İl genelinde fındık bahçelerinde külleme hastalığının yaygınlık oranı, bulunma oranı ve hastalık şiddeti sırasıyla %100, %87.38 ve%35.01'dir.
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.
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.
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Bitki Koruma Bülteni
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Volume
57
Issue
2
