[Arid_gardener] Question from Home-Hort WWW page

[Ayeolde@aol.com]

my question is concerning fruit trees. Each season my tangerine tree loaded with fruit splits and falls to the ground to the tune of 50 or 60 a day. I have an navel orange tree and grapefruit. This never happens to them. They are equally watered and fed. What is wrong with my tangerine tree. I had a arborist spray, trim & fertilize in Feb, of '99. I could use some help. It's happening again.  Thank you if you respond