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Preventing Pollution Problems from Lawn and Garden Fertilizers

Carl Jay Rosen

出版	University of Minnesota Extension Service, 1999
URL	http://books.google.com.hk/books?id=Ia9OAQAAMAAJ&hl=&source=gbs_api

註釋

Suggests routine soil test before making decisions on phosphorus and nitrogen, including tables that give phosphorus fertilizer suggestions and explaining fertilizer misuse.