Influence of temperature and fungicide on germination, growth, and virulence of Ulocladium cucurbitae on cucumber

Germination of conidia of Ulocladium cucurbitae was greatest at 30 C after 1 h, but germination occurred from 9 to 36 C. Growth of cultures from single conidia was greater at 30 C than at 9, 12, or 36 C. Cultures at 8 C, producing alternarioid-type conidia, produced ulocladioid-type conidia within 4 days of transfer to 21 or 27 C. By 10 days, the ulocladioid type predominated (...)