We time our fall applications of urea here in western Colorado for just before leaf fall (just as the leaves are starting to turn from green).  That way the N gets into the buds and leaf burn is no longer an issue.

Best of luck on that.

Harold L.

Dr. Harold Larsen
Professor Emeritus (Fruit Pathologist)
Colo. St. Univ., WCRC
3168  B  1/2  Road
Grand Junction, CO  81503-9621
Cell phone:  (970)314-5610

On 9/10/2017 10:46 AM, Mark Angermayer wrote:
I've read foliar urea in fall can increase hardiness and delay bloom
on peach.

Can anyone tell me the optimum time to apply foliar urea (100 lbs./ac
-  i.e. 50 lbs. actual N) on peach?  I'd like to use regular soil urea
(vs. the low biuret) because of cost, but understand soil urea will
burn the foliage.

I don't want to apply it too early so as to minimize photosynthesis
from premature leaf drop, but don't want to apply it too late so the
leaves won't absorb the N.

U of C says to apply it in Sept. or Oct. (not Nov.) but the climate
out there is quite a bit different than here.

Anyone have a good general guideline to go by (i.e. just before leaf
drop, two weeks before leaf drop, etc.)?

Mark Angermayer
Tubby Fruits Peach Orchard
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