Elazığ ili örtüaltı hıyar yetiştiriciliğinde görülen fungal hastalıkların belirlenmesi

Abstract

The aim of this study, which was carried out in Elazig province between 2011 and 2014, is to determine the prevalence and the severity of fungal diseases observed in cucumber ( Cucumis sativus ) crop plant grown in greenhouse cultivation facilities. The motivation for this study is the progressive increase in plant diseases observed in Elazig in recent years. During the research, control and survey studies were undertaken starting from planting seedlings until the harvesting of the crop in greenhouse businesses in Elazig province and its neighboring areas. The plants that were considered to carry the disease were transported to the laboratory and diagnosis was performed on the pure isolates of fungi. As a result of this study, 225 isolates were obtained. The diseases detected and their respective severities were as follows: Rhizoctonia solani (32.64%), Fusarium solani (26.99%), and Fusarium oxysporum (21.00%) in the roots as well as Alternaria alternata (35.28%), Didymella bryoniae (20.02%), Stemphylium solani (28.08%), Phoma cucurbitacearum (15.90%), Pseudoperenospora cubensis (36.54%), Erysiphe cichoracearum (20.29%), and Colletotrichum lagenarium (11.79%) on the leaves. The prevalence of the diseases was R. solani (14.90%), F. solani (18.00%), and F. oxysporum (6.47%) in the roots as well as A. alternata (28.00%), D. bryoniae (24.30%), S. solani (6.90%), P. cucurbitacearum (5.90%), P. cubensis (27.51%), E. cichoracearum (14.80%), and C. lagenarium (7.50%) on the leaves. According to these data, the most common fungal pathogens in greenhouse cucumber cultivation areas of Elazig are P. cubensis , A. alternata , and D. bryoniae . The fungal pathogens that were identified in terms of disease severity are P. cubensis , A.alternata , and R. solani . The disease severity in greenhouse cucumbers is 24.85%.