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Pink
Apple scab. Peak spore release of primary apple scab spores (ascospores) usually begins about pink stage in Pennsylvania. Oriental fruit moth. An insecticide application at this time will provide some protective control during the bloom period, when egg hatch of the first generation starts.
Mites. Savey or Apollo can be applied at pink, especially if no oil treatment has been applied. If a low rate of oil was applied (1-2 gal/A) and overwintering eggs were clearly visible to the unaided eye on the tree bark, then apply Savey or Apollo at pink. If a high rate of oil was used (4 gal/A), a Savey or Apollo application is usually not necessary at this time.
Powdery mildew. If powdery mildew is a problem, refer to Table 5-2 and Part II, Diseases, Pests, and Natural Enemies, for management recommendations.
Cedar apple rust. If cedar apple rust is historically a problem in an orchard, refer to Table 5-3 and Part II for management recommendations.
Tufted apple bud moth. See Part II for a discussion of using Asana XL as a groundcover treatment.