Blueberries again

One of my trusty original blueberry bushes has hardly produced any fruit this year. Usually it is my best producer. The plant looks very happy with lots of new growth but very little fruit. It hasnt been treated any differently than usual.

I did cut out some old unproductive growth last winter so I wonder if it is sulking. Hopefully it is not just old age 

I have been trying to recall the variety and I think it is Brigatta. 

Any one any ideas?

My two blueberry bushes are at least 10 years old (different varieties, planted in the soil) and one was always more productive (although smaller) than the other.
However, a couple of years ago it bore very few fruit, the other being much more productive.

Thinking it might be on its last legs, I bought a 3rd plant in case I had to get rid of the ailing one, but in fact last year it had a great crop, with the other old plant apparently having a rest year (yeah, go figure  )
This year all 3 have done pretty well.

It's possible you may have overdone the pruning, because the flower buds are produced on the previous year's growth - if you've been neglecting the pH and feeding it might be worth paying some attention to those, although I wouldn't do too much feeding at this time of year.
Pot grown plants might benefit from a partial (ericaceous) compost refresh, although you need to be careful as they are quite shallow rooted.