Oregon State University. Extension Service; Hart, John M. (John Mervyn), 1947-; Landgren, Chal G.; Fletcher, Richard A.; Bondi, Michael C.; Whithrow-Robinson, Bradford A.; Chastagner, Gary A. (Corvallis, Or. : Extension Service, Oregon State University, 2009-09)
"Key points: Nutrient management decisions change with
stand age. Before planting, test soil for adequacy of
phosphorus, potassium, calcium, magnesium, and lime. After tree height has reached 3 feet, begin a tissue sam ...
