. Levels-of-growing-stock cooperative study in douglas-fir. 0*-\ L_ 0 40 j_ D. Francis 60 80 100 120 140 160 Period mean basal area (ft2/acre) Figure 18.—Volume growth percent in relation to mean basal area for the growth period: (A) Skykomish, (B) Hoskins, (C) Clemons, and (D) Francis. Solid lines connect values for the same treatment (T) in successive growth periods; dashed lines connect values for different treatments in the same growth period (TP). Values shown for fixed percentage treatments (1, 3, 5, and 7) only. 180 0 40 60 80 100 120 140 160 180 Period mean basal area (ft2/acre) 39
. Levels-of-growing-stock cooperative study in douglas-fir. 0*-\ L_ 0 40 j_ D. Francis 60 80 100 120 140 160 Period mean basal area (ft2/acre) Figure 18.—Volume growth percent in relation to mean basal area for the growth period: (A) Skykomish, (B) Hoskins, (C) Clemons, and (D) Francis. Solid lines connect values for the same treatment (T) in successive growth periods; dashed lines connect values for different treatments in the same growth period (TP). Values shown for fixed percentage treatments (1, 3, 5, and 7) only. 180 0 40 60 80 100 120 140 160 180 Period mean basal area (ft2/acre) 39. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Curtis, Robert O. cn; Marshall, David D. cn; Pacific Northwest Research Station (Portland, Or. ) cn. [Portland, Or. ] : U. S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
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