Juice from carrots

[peanuts]

We make a lot of veg/fruit juices as we have them every lunchtime. Until this year I've never been successful in growing carrots, and as these are  one of the main ingredients, we buy them, mostly supermarket ones,  occasionally organic ones.  They produce a lot of sweet juice.  This week though after digging up  all our brilliantly successful carrots, I used some of the bigger ones for a juice and was surprised at the difference.  They produced relatively little juice and much, much more pulp than usual.  Why do you think this is?  It started me wondering just how the supermarket carrots are grown, probably not in earth . . . . . . . and with lots of water.
Has anyone any comments to make?
Peanuts

[peanuts]

[pumkinlover]

I suspect you are right.

[strawberry1]

I have a greenlife juicer and we make a veg juice about 5 times a week. We have been getting plenty of juice from home grown carrots, no different from when we bought carrots