Effects of UV-B radiation on the antagonistic ability of Clonostachys rosea to Botrytis cinerea on strawberry leaves

► The UV-B radiation caused a strong deleterious effect to Clonostachys rosea conidia. ► UV-B radiation significantly reduced the growth of Clonostachys rosea on leaf discs. ► The UV-B radiation caused reduction on antagonized ability of Clonostachys rosea to control Botrytis cinerea.