Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Leaf spot on cucumber caused by Ulocladium atrum.

Abstract

Symptoms of the newly reported disease, which has occurred on several occasions in the north of England, include circular, necrotic leaf lesions comprising a pale centre surrounded by alternating pale and dark concentric rings, with a slightly watersoaked margin. In some outbreaks considerable leaf death and defoliation occurred.