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Graph on nutrient intake and relative growth rates through time in 2yr Douglas fir

Change in dry weight and nutrient contents in Norway spruce through time

Douglas fir relative growth rate through time (days)

Graph on relative growth rate through time

Number of secondary needles through time (difference between fertilized and unfertilized)

Drawing of the difference on seedlings root length

Table on white spruce foliage nutrient concentration

Graph on nitrogen- mg per 1000 seedlings (white spruce)

Photographed in this picture is Mr. Bustowe.

Photographed in this photo is Dr. W.M. Graham.