Composting

Especially using animal waste

This question in mainly directed to Radko Tichavsky:

In your recent reply to questions posed by Konda Ramesh you made an interesting statement and I quote

“You should reduce, or if it is possible, eliminate the application of nitrogen fertilizers (manure from origin animal).

This brings up a very interest point for discussion. The use of cow manure seems to be a central point in biodynamics and the other biological practices. I agree with your point that plants are vegetarians so am I to take from your comments that there is considerable  differences between an animal sourced nitrogen and therefore any other mineral make up and vegetables matter. Can you please written a paper etc explaining your thoughts concerning the different composting practices. Much appreciate your time in this matter.