Rusty spot is recognized only on the fruit. The earliest symptoms on young green fruit appear as small, orange-tan spots. K. Peter.
Young peach fruit become infected and exhibit white non-powdery lesions that are small, spherical, and later turn orange-tan in color. Leaves and stems are not affected.
Routine fungicides control this disease. Controlling mildew in adjacent apple orchards reduces rusty spot incidence in peach orchards.