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

Moisture loss from Ontario tube after 30 minutes, cf.slides #436 & 437. 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 Jiffy pot 30 minutes after planting in dry soil. Jack pine, 1+0, moisture loss.

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

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

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

Detail of roof of shade house to show vent for hot air.

General view of shade house, this is nursery for Georgia Pacific.

Pine seedling grown in 10" tube, cf.slide #418 for Jefferson nursery. Ponderosa pine, 1+0, container.