Hello,
If you want to start preventative sprays this year, using weather data can help you track risk on infection, so you can spray before infection occurs.
The Pest Prophet app (Link) can help you track this for free on your phone with localized weather data.
One way to save some money is to avoid sprays when the environmental conditions are not conducive to infection. For Powdery Mildew many growers use the Gubler -Thomas Powdery Mildew Risk Index which takes weather data and tracks daily risk of infection. The Pest Prophet app (Link) is the a free...