Well I'm not trying to feed the world but yes we do get a very decent yield. I have given at least 8 containers full of strawberry plants to friends and family.
I have a blueberry question we got our plants from a local grower. He said blueberries don't send out underground runners (like raspberries). There may have been a lack of communication, but it looks to me like we have new shoots off the bluberries?????
I also credit our yields in general to good organic fertilizer. We may get a worm thingy to grow worms for the castings. They seem to do well here. In the past we have grown worms under our rabbit cages, but that was when we had a farm and 16 acres.