Peach leaf curl is favoured by a cool and wet spring around budswell followed by warm, humid conditions, which bring about rapid growth.
The optimum temperature for fungal growth is 20C to 26C.
Non-pesticide management
Thorough control of this disease requires a timely pesticide application.
A number of other measures can be taken to make management more effective.
Where leaf curl has been a serious problem it is important to put more effort into maintaining tree vigour. Thin more fruit than usual, ensure adequate irrigation and apply extra nitrogen fertiliser.
Download the Orchard plant protection guide
See this article in Tree Fruit August 2019
