Fertilizer trial, N @ 600 lb/ac applied twice, in June and in July as ammonium sulphate. White spruce, 1+0, fertilization.

Fertilizer trial, N @ 1200lb/ac applied in June as ammonium sulphate. White spruce, 1+0, fertilization.

Seedlings drill late sown in late November; height-10-14cm. Fir douglas, 1+0, sowing date.

Drill sown in mid-April; height-6-9cm. Fir douglas, 1+0, sowing date.

A drill sown in late May; height-4-6cm. Fir douglas, 1+0, sowing date.

The effect of wind on bed at time of sowing. Jack pine, 1+0, wind effect.

A natural cabbage heading probably from fertilizer pellet. White pine, 1+0, cabbage heading.

A cabbage heading induced by placement of fertilizer pellet. White pine, 1+0, cabbage heading.

Damping-off in extracted seedlings. Jack pine, 1+0, damping-off.

Arsenic poisoning in compartment that was converted from an apple orchard to seed beds. Arsenicals were sprayed regularly on the apple trees. Red pine, 1+0, arsenic toxicity.