Pathogenic fungi of smooth bromegrass grown in pure and mixed sowing with fodder galega.

摘要

Smooth brome grass (Bromus inermis) cv. Brudzynska was grown in pure and mixed sowing with fodder galega (25 and 75%) in a field experiment conducted during 2005-2007 in Knopin near Dobre Miasto (Poland), from 2005 to 2007. Fungi were isolated from leaves, culm bases and roots of smooth brome grass in the laboratory. The highest proportion of pathogens was isolated from the culm bases of smooth brome grass in the first year of investigation, reaching 50.7% in pure sowing and 41.9% in mixed sowing. In the next years, their numbers decreased. Species of the genus Fusarium were isolated most frequently from samples of culm bases, leaves and roots. The leaves and roots of smooth brome grass were colonized by pathogens to a lesser degree. They accounted for 3.9 and 7.1% in pure sowing. Antagonistic fungi, represented by species of the genera Gliocladium, Paecilomyces and Trichoderma, were isolated infrequently from culm bases, and only single isolates were obtained from leaves.