Daniel Prince wrote:
A branch on our Moro Blood Orange tree has split. I think it was
because of the weight of the fruit. I have propped the branch up so
that it is no longer sagging so much.

Do we need to do something about the split or can we leave it the
way it is?

You don't need to do anything about that kind of split. You should
prune away those sucker branches, though, as well as any
downward-growing branches. -aem