Mark,

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
EMail:  harold.lar...@colostate.edu
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.)?

http://ucanr.edu/sites/fruitreport/Nutrition_-_Fertilization/Individual_Nutrients/Nitrogen/Foliar_Urea/

http://ucanr.edu/sites/fruitreport/files/162635.pdf

Thanks,
Mark Angermayer
Tubby Fruits Peach Orchard
KS/MO
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