I've been dealing with a pecan tree for the past 5 years that has to be about

20+ years old. Over this period of time a part of the tree structure dies back

every year. The end of one limb here, another there. Just within the past 2-3

days we've had a massive leaf drop. Tree still looked leafed but there are a lot

on the ground......and they're not dry but green and flexible. We water the

tree deeply on a 10 day schedule.

Help!

thx