Had the fruit pictured below show up in one of my pick plots, and figured I'd put this one out to the readers on some opinions on what this could be. The brown lesions on the fruit are hard, but not sunken like one would see with anthracnose.
Just picking one of my strawberry trials this morning (yes, yes, I pick by myself, usually the nearest person is like a quarter of a mile away - it's pretty therapeutic actually) and I happened across this little guy wandering about on top of the bed plastic.
Rationale: Reversion, meaning the reddening of part or all of a blackberry fruit after harvest, has become a major problem for blackberry growers across the United States who can lose up to 25% of their total crop to this phenomenon.
Mark here - hey folks this concept of transmitting fungal inoculum from field to field on people's feet and equipment has been one I've been talking about for a while, and now here you have the scientific evidence from some of our finest scientists at the UC.