Some of the Yellow Delicious fruit on our tree turned brown, soft, and when they fall off and hit the ground, "SPLAT"! Messy and nasty - attracting ants, yellow jackets, etc. What is causing this and how can I prevent it? The majority of the apples are wonderful.
Certified GKH Gardening Expert
It could be black fruit rot:
Alternatively, it could be blossom end rot, which can cause apples of the delicious varieties to go soft:
Also check whether there are any grubs or other insects inside the apples which could have caused them to rot.