Douglas fir sown in April in styroblocks, photo July. Fir douglas, 1+0, container, styroblock.

Douglas fir extracted from block, sown April, photo July. Fir douglas, 1+0, container, styroblock.

Extracted hemlock seedling, sown April, photo July. Western hemlock, 1+0, container, styroblock.

Moisture loss from Jiffy pot 30 minutes after planting in dry soil. Jack pine, 1+0, moisture loss.

Moisture loss from Paper pot after 30 minutes, cf.slides #436 & 438. Jack pine, 1+0, moisture loss.

Moisture loss from Ontario tube after 30 minutes, cf.slides #436 & 437. Jack pine, 1+0, moisture loss.

Phosphorus deficiency in jack pine at 25 days. Jack pine, 1+0, nutrient deficiency, phosphorus.

Nisula roll white spruce, put in roll in April, photo in June. White spruce, 2+0, container, nisula.

Black spruce grown in greenhouse, transplanted as 1+0 in June, 1974 photo June, 1975. Black spruce, 1+1, container, nisula.

Nisula rolls in Sussex nursery of J.D. Irving. White spruce, 1+1, container, nisula.