controlling pear scab
I have a Seckel pear tree that is several years old, and sets lots of fruit. Unfortunately, the last couple years all the fruit has been ruined by scab.
In the fall of 2012 I tried cultural control, by raking up all the leaves in the fall, but the tree is underplanted with other things, so it's hard to really clean up the ground there. I didn't notice any difference last year, so I thought I'd try the fungicide approach this year (I gathered the leaves this past fall as well)
Any tips? I gather that some kind of copper spray applied as the leaves are emerging should help a lot. Any specific brand or formulation I should look for?