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Silvicultural Considerations for Southern Pine Beetle Control

Timely and properly applied silviculture is the most effective and economical control available for southern pine beetle. This fact should be considered in all forest management prescriptions and decisions. Knowing which stands are the most likely candidates (or at least likely) for SPB attack is important. Several geographically specific stand hazard rating systems for SPB have been developed. Check with your State Forester for one applicable for your area. A more generalized description of high risk stands and silvicultural recommendations are presented below.

Southern Coastal Plain Piedmont Southern Appalacians
Characteristics of Densely stocked stands Well stocked stands Densely stocked natural stands
Susceptible stands Large proportion of Sawtimber Small sawtimber Large proportion of over-mature sawtimber
Declining radial growth Slow radial growth during the last ten years Slow radial growth
Poorly drained soils and low-lying areas High percentage of clay in surface and subsurface soils Dry, south-facing slopes
High percentage of shortleaf and/or loblolly pine in the stand High percentage of shortleaf pine High percentage of shorleaf and/or pitch pine
Species Susceptibility
Least Resistant Shortleaf Loblolly Shortleaf Shortleaf Pitch
Most Resistant Slash Longleaf Virginia Loblolly Virginia Eastern White
Silvicultural Practices (all regions)
Maintain proper stand density at range of 80-100ft2 basal area per acre
Regulate age classes by eliminating over-mature stands and avoiding large unbroken stands of the same age and species
Favor most resistant species after considering specific site and disease relationships
Minimize Logging damage
Manage species composition by encouraging hardwood on hardwood sites
Remove high hazard trees damaged by lightning, wind, ice, disease, or other insects or logging
silvicultural_considerations.txt · Last modified: 2013/03/28 16:41 by rsheridan