I hope the new format for the forum doesn't prevent people from answering my question... I've seen a few comments that some of you are leaving GW.

Anyway, I don't understand the Utah chill unit model. Is this just a different way of calculating chill hours? In other words, if my Bartlett pear says it needs 500-600 chill hours on the below 45 degrees model does that mean it also needs 500-600 chill units on the Utah model? Is it an either/or thing?

My area had wildly different chill hours depending on the model. Will my pears be ok?

From get chill.net for my location:

Below 45 Model: 190 chill hours

Between 45 and 32 Model: 190 chill hours

Utah Model: 456 chill units

Positive Utah Model: 555 chill units

Dynamic Model: 25 chill portions