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Pink to First Open Bloom
Disease. Brown rot (blossom blight).
Insects. Plant bug, green peach aphid.
Plant bugs. Applying alternate row-middle sprays at reduced intervals should improve control. Plant bug feeding injury results in sunken areas on developing fruit. Bugs are most persistent in orchards with alfalfa or clover sods. Since nectarines are most vulnerable to catfacing injury at pink and petal fall, do not cultivate soil in orchards at those times. Cultivation only serves to destroy many alternate host plants, thus driving the insects up into the peach trees.
Oriental fruit moth mating disruption. If hand-applied mating disruption is used, dispensers should be placed at the pink stage at the recommended label rate. All dispensers should be in place before bloom. See Part III for a discussion of mating disruption. If a sprayable pheromone formulation for OFM is used, make first applications before the start of second brood flight. Repeat applications every 2 to 3 weeks or as needed. If chemical control is necessary, use degree-day egg hatch model for the best timing of available insecticides.
Tufted apple bud moth. See Part II for a discussion of using Asana XL as a groundcover treatment.
Pesticide Recommendations for Nectarines, Pink to First Open Bloom