You guys know that I come from the dark side. Well actually, I come from a long background in woody ornamental care. From the 70's to the late 90's it was taught that high N was God's gift to trees. After all, look at that great green flush of growth it produced! Now that's a healthy tree. Over time it was realized that the flush of growth actually took energy away from root systems and defense systems. Research showed that trees feed high N were more susceptible to insects, diseases and drought stress. The tree care industry has moved away from promoting excessive N and towards biostimulants & organic matter. So, I would like to know what the benefits of high N for turf are aside from a quick green up. I'm not bashing anything or asking for university studies. I honestly want to know, cause it doesn't make sense to me.