I have been aproached by several clients that want to seed or sod thier lawn. I know how to seed and sod except how much composte "humore" i should use for every hundred sq foot. I have a basic idea how much to use but nothing concreate. Is there a chart that can be used to figure this out. The same thing goes for seed I have a basic idea of how many pounds to use but i want to be sure it is correct.