Abstract
The aim of this study, conducted in 2020–2023, was to analyze the incidence of sharp eyespot on the stem bases of durum wheat in two Polish regions, and to evaluate the effectiveness of chemical and biological seed treatments in reducing seedling infection by Rhizoctonia cerealis in vitro and in vivo. During the four-year experiment, sharp eyespot was sporadically observed on several durum wheat cultivars only in north-eastern Poland. Seed dressing products containing triticonazole and prochloraz as a copper complex (KintoDuo 080 FS), fludioxonil (Omnix 025 FS), prothioconazole, tebuconazole, and fluoxastrobin (Scenic 080 FS), and yeast strains reducedR. cerealis colony growth in vitro. All tested chemical and biological seed dressing formulations reduced seedling infection by R. cerealis, andScenic 080 FS was most effective. The formulations containing triazoles as active substances inhibited the growth of durum wheat seed¬lings. In contrast, seed treatment with a suspension of selected strains of Rhodotorula glutinis 418 and Debaryomyces hansenii J1 yeasts significantly stimulated seedling growth, compared with control seedlings.
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