[Apple-Crop] nitrogen in early spray

[Daniel Cooley]

If you were spreading the urea as granules, maybe. The actual recommendation is for 44 lb urea per A, which is about 20 lb N. Since this is in solution and should ideally be put on leaves on the tree after harvest, or in the fall on leaves on the ground, not much if any of that gets to the soil. Some volatilizes pretty quickly, the rest gets tied up in microbes and decaying plant matter. By spring it’s pretty much gone. A spring application might allow some to get to tree roots. Again, because of the application, I don’t think much.

Dan Cooley


> On Mar 21, 2017, at 1:04 PM, maurice tougas <appleman.maurice at gmail.com> wrote:
> 
> Rates I've seen to assist with litter decomposition are 50# urea per acre. Using 25# cal nit makes my leaf/fruit samples test way too high N. Adding 50# urea/acre will blow the Universities testing machinery off the planet!
> 
> Mo Tougas
> 
> On Tue, Mar 21, 2017 at 11:07 AM, Daniel Cooley <dcooley at umass.edu <mailto:dcooley at umass.edu>> wrote:
> If you’re not chopping leaves, do that first. Then worry about the extra urea.
> 
> Dan
> 
> 
>> On Mar 21, 2017, at 10:30 AM, Jon Clements <jmcextman at gmail.com <mailto:jmcextman at gmail.com>> wrote:
>> 
>> I really question whether the urea will do much extra good given the cool spring ambient and soil temperatures?
>> 
>> Good luck.
>> 
>> Jon
>> 
>> On Mon, Mar 20, 2017 at 2:24 PM, David Doud <david_doud at me.com <mailto:david_doud at me.com>> wrote:
>> So - I applied urea in a spray last november, but I am not impressed with the breakdown of the apple leaf litter - I just ordered oil and copper for the first spray this spring and I wonder about adding urea into the mix in hopes of accelerating decomposition - - any reason not too?
>> 
>> David Doud - grower IN - almost green tip on early blooming varieties -
>> _______________________________________________
>> apple-crop mailing list
>> apple-crop at virtualorchard.com <mailto:apple-crop at virtualorchard.com>
>> http://virtualorchard.com/mailman/listinfo/apple-crop <http://virtualorchard.com/mailman/listinfo/apple-crop>
>> 
>> 
>> 
>> -- 
>> JMCEXTMAN
>> Jon Clements
>> clements at umext.umass.edu <mailto:clements at umext.umass.edu>
>> aka 'Mr Liberty'
>> aka 'Mr Honeycrisp'
>> IM mrhoneycrisp
>> 413.478.7219 <tel:(413)%20478-7219>_______________________________________________
>> apple-crop mailing list
>> apple-crop at virtualorchard.com <mailto:apple-crop at virtualorchard.com>
>> http://virtualorchard.com/mailman/listinfo/apple-crop <http://virtualorchard.com/mailman/listinfo/apple-crop>
> 
> 
> _______________________________________________
> apple-crop mailing list
> apple-crop at virtualorchard.com <mailto:apple-crop at virtualorchard.com>
> http://virtualorchard.com/mailman/listinfo/apple-crop <http://virtualorchard.com/mailman/listinfo/apple-crop>
> 
> 
> 
> 
> -- 
> Maurice Tougas
> Tougas Family Farm
> Northborough,MA 01532
> 508-450-0844
> _______________________________________________
> apple-crop mailing list
> apple-crop at virtualorchard.com
> http://virtualorchard.com/mailman/listinfo/apple-crop

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://virtualorchard.com/pipermail/apple-crop/attachments/20170330/897c9a4a/attachment.html>