Provenance trials. Miyamori, Japan. Photo Carl Heimburger

Pruned Larix leptolepis seed orchard, Tohoky Forest, Takisawa. Photo Carl Heimburger

Potassium fertilized Douglas fir, sampling cones. Person is Bruce Devitt. Photo Mike Meagher. Mt. Prevost near Duncan.

Potassium fertilized Douglas fir, sampling cones. Photo Mike Meagher. Mt.Prevost near Duncan

Heavy cone crop from potassium fertilization. Mt. Prevost near Duncan. Photo Mike Meagher.

Heavy cone crop from potassium fertilization. Mt. Prevost near Duncan. Photo Mike Meagher

Strip clearcutting in lodgepole pine, with scarification after the cut. Hinton

Natural regeneration of lodgepole pine, 9 yrs. after clearcutting and scarification. Hinton.

Natural regeneration of lodgepole pine, 11 yrs after clearcutting and scarification. Hinton.

Lodgepole pine natural, 11 yrs. after clearcutting and scarification. Hinton.