When I read threads like this I think most successful gardens happen inspite of the efforts of the gardener and not because of them. As far as bloodmeal providing available N are you saying it is already in ionic form? I have never used blood, mostly because it gives me the heeby-jeebies but where does it come from? the slaughterhouse? slopped down the collection drain? with all the other goodies? Remember; with organics there is no such thing as feeding the plant. Time-release organic fertilizer? Does that mean it is only slowly available to microbial degradation?