Patio pear

I have a four year old "Terrace Pearl" in an 18" terra-cotta pot - the tree itself is about four feet tall. This year it has produce a good amount of fruit but almost all of it is either split or showing signs of doing so; there is no sign of scab on the leaves or the fruits. I've watered it every day in dry weather - approx half a gallon each time - and I feed once a week with tomato food.

Any ideas please?

 

Good afternoon Rick and welcome to the site.