 Rutgers Cooperative Extension Dormant Oil Sprays: In recent growing seasons, San Jose scale and white peach scale populations have been causing increasing amounts of damage. These pests create a superficial spotted injury caused by crawler stage feeding on the skin of apples and peaches, making the fruit unmarketable. In severe infestations, heavy crawler populations feeding on the sap of tree limbs can cause severe dieback.... Read more... » 
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