black coating on yellow apples
I have apples from a yellow apple tree -- it's on my neighbor's abandoned property, so I don't know what kind it is. Normally, the apples are yellow with no coating, but this year the apples look fine just that they have a black coating on the skins. If I brush the skin it comes off (mostly). Soap and rubbing with my hand does not take it off -- only brisk brushing works.
Does anyone know what this could be? Can I safely make applesauce from them without scrubbing every single apple? (which would take all night) I have had them in the fridge, figuring I'd scrub and use them one at a time, but there are so many I don't want to waste them.
The peaches on the peach trees (next to the apple tree) were just a mass of fuzz this year -- as in mold. And I noticed that no one got the pears this year (I was away when they ripened) and they were left to rot on the tree. Could it be mold from the other fruit?
I hope it's not anything from the air -- normally no one burns coal in the summer.