Fungal diseases of strawberry grown in Düzce province of Turkey

Surveys in Düzce province indicated that strawberry cultivation was made in small open fields changing between 0.5 and 5.0 da with mulching. Four strawberry cultivars; Camarosa, Kabarla, Sweet Ann and Osmanl？ have been commonly grown in the province. Fungal diseases of strawberry which has gained importance recently in Düzce province of Turkey were studied with the surveys conducted in three periods (15.03.2012; 20.05.2012; 15.09.2012). In the first period for leaf diseases; in the second period for leaf, petiol, fruit, and root diseases and in the third period mainly for root diseases were investigated. Alternaria spp., Botrytis cinerea, Hainesia lythri, Mycosphaerella fragariae, Phoma sp., Phomopsis sp., Rhizoctonia solani were isolated from the leaves and petioles; B. cinerea from the fruits and Alternaria spp., Fusarium oxysporum, Macrophomina phaseolina, Phytophthora spp., and R. solani were isolated from the roots. All the fungi obtained caused necrosis on detached leaves at the pathogenicity tests. Detached leaf tests were clearly reflected the pathogenicity of the fungi. Botrytis cinerea and Mycosphaerella fragariae were the most widespread diseases found in all the fields surveyed. The other fungi showed various rates of disease occurrence