Posted: 04/10/2014 at 07:52
It really has been the year of the fungal infection!!! Perfect weather conditions - warm and damp.
If I remember correctly Monty felled one of his quinces because he felt that they were overcrowded and that this was encouraging fungal infections. I presume that's not so in your case as your tree is recently planted..
I would rake up and burn the fallen leaves, ensure that the tree gets plenty of air-flow around the branches and then not worry.
Encourage healthy growth by ensuring there's clear soil around the trunk and feed with Fish Blood and Bone in February.
Well, that's what I would do - others may have different suggestions.