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Potassium deficiency. Red pine, 2+1, nutrient deficiency.

Summer transplanted (July) seedlings. White spruce, 2+0, transplanting.

Average seedlings extracted scale. White spruce, 2+0.

Mechanical lifting, yellow chlorosis in shoots indicative of potassium deficiency. White spruce, 2+2, lifting.

General view of seedbeds healthy look of stock. White spruce, 2+0, seedlings in bed.

One of the first frit mulching trials in Ontario. Mulching.

Bitter blue lupin sown as a plow down green manure. Green cropping.

Bitter blue lupin, close-up of #44. Green crop.

Effect of heavy addition of sawdust on seedlings n.b. they are small but not chlorotic i.e. their growth rates have been slow from germination. Jack pine, 1+0, sawdust added to soil.

No sawdust added, n.b. large seedlings and green colour.cf#45. Jack pine, 1+0, sawdust not added to soil.
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