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

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

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

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

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

Nitrogen fertilization trial N @ 300lb/ac as ammonium sulphate, one of the first such trials in Ontario. White spruce, 1+0, fertilization.

General view of trial area n.b. no response. White pine, 1+0, fertilization trial.

View of beds used in periodic uptake study. White spruce, 2+0.

Double rate of fertilizer application. White spruce, 2+0, fertilization trial.

1/2 rate of NP in U2 trial. White spruce, 2+0, fertilization trial.