Abstract Powdery mildew of cucurbits, caused by Podosphaera xanthii , is an economic constraint in cucurbit production worldwide. This study examined the influence temperature and vapour pressure deficit (VPD) on rate conidial germination formation germ tubes Australian P. isolate 12 – 48 h after inoculation. Two experiments were prepared inoculating cucumber, cv. crystal salad, leaf-discs usin...
