Figure 3 - Crown Canopy versus Spacing for Ponderosa Pine

Figure 3 shows relationship between D+ and crown canopy in Pearson and .Jameson's and McConnell and Smith's studies. D+8 to D+14 gives a crown canopy range of 20 to 35 percent. D+8 to D+14 would appear to be a reasonable spacing guide for low site Ponderosa pine where woodland grazing is feasible.

Additional Notes

Prepared by Prepared by H. E. Hunter, State Staff Forester, SCS, Bozernan, Montana.

In figure 3, the relationship of crown canopy to initial D+ spacing can be used to estimate from our grazable woodland guides future forage value.

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Last Modified: 07/05/2007