The response of selected plant species to a single application of factorial combinations of nitrogen (N), phosphorus(P), and sulfur (S) on 2 lodgepole pine (Pinus contorlo Dougi.) clenrcut-logged sites In British Columbia was evaluated over 3 years. Increasing N rates typically resulted in higher forage standing crop on both sites, in all years, but standing crop at Fly Creek was nearly double that at Beaverdam Lake. On both sites, forage yields peaked at 400 kg N/ha in 1982 and carry-over of the fertilizer effect lasted for 3 years although yields declined annually. Addition of P to N applications enhanced (P