Özet:

Leaf diseases occurring on barley fields in Bala district of Ankara province, Turkey were determined. Survey studies were carried out in Bala district in 2018 and prevalence and severity of these diseases were determined.  A total of 50 fields were examined. The following barley disease causing agents were found: Drechslera teres f. maculata, Drechslera teres f. teres, Drechslera graminea, Rhynchosporium secalis and Erysiphe graminis f. sp. hordei. Mean prevalences of these diseases were determined as Drechslera teres f. teres 30.7%, Drechslera teres f. maculata 11.7%, Drechslera graminea 1.16%, Rhynchosporium secalis 4.67% and Erysiphe graminis f. sp. Hordei 0.2%. Drechslera teres f. teres and Drechslera teres f. maculata were found as the most common disease agents. Disease severity values ranged between 4-8 using a 1-9 scale.

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