Oregon State University. Extension Service; Hart, John M. (John Mervyn), 1947-; Gangwer, Michael I.; Graham, Monte; Marx, E. S. (Corvallis, Or. : Extension Service, Oregon State University, 1995-07)
Most dairies need no commercial
fertilizer if they use
manure properly. In most
cases, manure can supply all
the nitrogen, phosphorus, potassium, and
several other nutrients needed for forage production.
