Özet:

The study is carried out in Elazig province between the years 2012-2014 with the prevalence of fungal disease in tomato fields and in order to determine the severity of the disease. Surveys were carried out between March and September, from the beginning seedling planting, in Gedikyolu, Salkaya and Sarıkamış in Elazıg Center, Akmezra in Kovancılar and Gemici villagers in Baskil, a total of 4.852 decare in area were realized in 5 villages. Pure isolates of fungi from diseased tomato leaves were obtained and diagnosed. In addition, prevalence rates and disease severity values of fungal disease agents were also determined in the cultivation areas of tomatoes surveyed. As a result of isolation studies;387 isolates were obtained from 642 tomato plant samples and 14 fungal pathogens were diagnosed. The prevalence rate of fungal disease agents in tomato roots according to survey studies; Rhizoctonia solani (20.27%), R. tuliparum (19.40%), Fusarium solani (17.42%), Colletotrichum coccodes (16.66%), Rhizopus stolonifer (13.79%) and Phoma destructiva (11.96%) was determined as. The prevalence rate of fungal disease agents on the tomato leaves; Alternaria alternata (27.23%), Septoria lycopersici (25.27%), Leveillula taurica (19.44%), Stemphylium solani (17.81%), Botrytis cinerea (17.39%), Phytophthora infestans (15.70%), Cladosporium fulvum (11.23%) and Ulocladium atrum (6.27%) was determined. Severity of fungal disease agents in tomato roots; R. solani (43.3%), R. stolonifer is (38.1%), F. solani (37.1%), P. destructiva (33.7%), C. coccodes (15.9%), R. tuliparum (14.7%) have been determined. Severity of fungal disease agents on the tomato leaves; A. alternata (47.5%), S. solani (40.1%), C. fulvum (29.9%), S. lycopersici (25.0%) B. cinerea (22.2%), P. infestans (21.0%), U. atrum (17.3%) and Leveillula taurica (17.1%) was determined. As a result; the average prevalence rate of fungal disease agents 17.67% and average fungal disease severity 28.66% was determined in tomato planting areas Elazig province. The most common fungal disease agents highest prevalence rate of in tomato planting areas of Elazig are A. alternata, R. solani and L. taurica. The most common fungal disease severity of was determined as A. alternata, R. solani and S. solani.  

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