If a lawn requires .5 lbs of N for the next 4 weeks of healthy growth,,, then it requires .5 lbs of N for the next 4 weeks of healthy growth...
.3 lbs of N in the organics doesn't release the needed .5 lbs for the 4 week period ,,, does it???
What difference does it make if the water soluable N comes from a so-called organic fert or from urea??? Coated urea is also time release and therefore has an opportunity to continually feed out that .5 lbs over the 4 week period...
I don't see that organic N is anything safer than synthetic N, just more expensive and less effective... theremay be magic in the stuff, but no real information other than 'Believe' and the Magic will come true...