Top diseases in roses - Powdery Mildew
February 17, 2023
powdery mildew. Conidia are the main means of dispersal. They are dispersed by wind, as are the ascospores. In general, powdery mildew fungi are not very resistant [...] but inhibits spore production, so the net effect of the RH is very small. Wind and draught in greenhouses promote disease. In greenhouses, the dispersal