Apple scab over-winters on fallen leaves, codling moth caterpillars live in fallen apples and pear midge grubs live in fallen fruitlets. |
In other years with an early bloom date, many fruitlets reach 1-inch diameters by early May. |
The larvae are yellow-white in colour, up to 4mm long and found in cavities within distorted fruitlets. |
The cells that will become next year's fruit buds are beginning to form when you can see this year's fruitlets, which are baby apples just starting to form. |
Eggs hatch by full bloom and nymphs feed on developing fruitlets though the petal fall period. |
Pedicel CSA in fruitlets destined to abscind declined once symptoms of pending abscission became apparent. |