There are a lot of tools available in cling peach disease management. Dr. Jim Adaskaveg (UC Riverside) discusses some strategies for the four key timings of disease management for cling peaches.
2017 Almond Fungicide & Efficacy Timing Tables (see PDF pages 32-35) http://ipm.ucanr.edu/PDF/PMG/fungicideefficacytiming.pdf
UC IPM for Peach: http://ipm.ucanr.edu/PMG/selectnewpest.peach.html
Mention of a pesticide does not constitute a pesticide recommendation. Always follow the pesticide label.
Thanks to the Pistachio Board of California and Almond Board of California for their generous financial support. Music by Muriel Gordon.