Wow 800 lbs of fert on a lawn. That flat blows me away. You'd think it'd burn the hell out of the lawn. I grew up farming, was around it all of my life, just got out of it 2 years ago. We'd soil test to see what we'd need for fert applications. Some fields would call for 50lbs of nitrogen per acre, others as low as 20lbs. All depended on crop rotations, and type of crop being seeded. A guy couldn't afford to just dump on the fert. Besides after a certain point it does more harm than good. <br> We ran a no-till operation, which means we did no cultivation, tried to disturb the earth as little as possible. High levels of organic material were the goal. It reduced erosion, cut fertilizer needs, and as mentioned soil compaction was not a problem. We could dig a sample of soil and find lot's of earthworms, go to a neigbor's field who practiced conventional tillage you would find no worms.<br> All of this was good but to control weeds we did a lot of spraying. And the health risk is a concern. I believe it is what killed my father. He was in excellent physical shape and died of cancer at the age of 54. We'd buy roundup by the 1000 gallon shuttle. And when you spray thousands of gallon's of herbicides a year with a cabless tractor you get plenty of exposure to spray drift. <br> Sorry about rambling on but I hope organics will have a future, and I'm very interested in learning more about them.