Downy mildew of Cucurbits
or surviving mycelium sporangia are formed, structures in which zoospores are produced. However, in downy mildews, sporangia often germinate directly and [...] is required. For most downy mildews, the optimum temperature is around 15 o C and the closer the temperature is to this, the shorter the leaf wetness period [...] density, good aeration during propagation and maintaining a warm and dry climate in greenhouses. Use hygiene measures. Start clean, remove crop residues and prevent