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[Lucky Pittman <lucky.pittman@murraystate.edu>]

I would be suspicious that 6-month old 'aged' urine would have 
minimal N content, as the denitrifying bacteria would long ago have 
converted most, if not all, of the urea nitrogen in the solution to 
ammonia, which would have sublimated off.  What you'd be left with 
would be a salt solution - not exactly a great fertilizer, in my book.
I'm not a soil chemist, but I did stay in a Holiday Inn Express...

Lucky