Where is the biological advantage? Is it out yet?
Greg Willis recommends 10-50 tons of good compost per acre, on hurting land in year one of a regeneration program, with 50 tons being the ideal.. how many lbs of N do you figure that is?
Steiner says Ca can transform into N, and Si into Ca so..
A shitload...but at the same time it depends on how much carbon comes with it. I am guessing as long as you do not exceed a 1:10 N:C ratio...keep it tied up in that humus flywheel...then you are safe. If you add that much as nitrate you are fucked.
N from sources like Neem come without that built in C:N ratio
edit...the question becomes will you ever have enough S in that soil to mineralize the N. Which is OK...you simply would add a little every grow and mine that humus.