Disease. Leaf curl.
Insects. Mites, scales. Lecanium scale and San Jose scale: apply Esteem at 4.0-5.0 oz with oil. Use higher rate of Esteem under heavy scale pressure.
Brown rot. Remove all fruit from trees after last picking to prevent brown rot fungus from overwintering in mummies and twig cankers. Discing lightly under the trees no later than first bloom will aid in preventing fruiting of the brown rot fungus on old mummies in contact with the soil. Clean cultivation is not necessary--just disturb the mummy's contact with the soil. If this is not done, bloom sprays may become more critical. Refer to Part II: Diseases, Pests, and Natural Enemies, for more information on brown rot.
Cytospora canker. Refer to Part II: Diseases, Pests, and Natural Enemies.
Pesticide Recommendations for Peaches, Dormant, Before Bud Swell