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How to boost soil nutrients for the good of your backyard – and the planet
(www.homesandgardens.com)
A place to discuss and learn about the restoration of disturbed lands to desirable end land uses
One minor point of clarification: they talk about the soil profile - in backyard settings this has been removed, and then topsoil has been brought in so you're left with 4 inches of topsoil over your C horizon. The topsoil you have is not the topsoil that was there.