Seedlings in "Wood's" tubes. Fir douglas, 1+0, container.

seedlings in control plot - no N. Red oak, 1+0, fertilization trail.

Seedlings in Ontario tubes. Red pine, 1+0, container stock.

Seedlings in Ontario tubes; sown April, photo Sept. White spruce, 1+0, container, Ontario tube.

Seedlings in situ in bed with roots and soil exposed, n.b. location of roots and the well-developed plow layer after approx. 10 years since nursery was established. Location Comp. B-11. Jack pine, 2+0, seedlings in bed.

Seedlings outside for hardening off prior to out-planting. Jack pine, 1+0, greenhouse, tubed seedlings.

Red pine planted in paper pots on area site prepared by Martini plow. NS Pulp & Paper (now Stora). Antigonish, Cape Breton.

Seedlings root pruned by vertical knives. Jack pine, 3+0, root pruning.

Seedlings sown in April at 4 months; cf.slide #398. Difference is due to different soil mix. Fir douglas, 1+0, seedlings. Weyerhaueser.

Seedlings sown in greenhouse Feb'73, heeled-in for transplanting photo Aug'73. Black spruce, 1+0, greenhouse seedlings.