Select pine plantation planted at planting densities of 450 TPA or less (12 ft x 8 ft or 14 ft x 8 ft).
First Thinning -
Age 11 or when stand basal area approaches 90 ft
Reduce to 125 crop trees per acre.
Second Thinning -
When stand basal approaches 90 to 100 ft
Mean dbh will average 13 inches.
What to Prune
Select pine plantation established at low planting densities on high quality sites.
Pine species include loblolly, slash and longleaf.
Identify approximately 125 evenly spaced crop trees per acre.
A 2 lift procedure is generally more efficient.
First lift will allow crop trees removed during the first thinning to be marketed as plywood.
First lift should be done when crop tree 6-inch stump diameter reaches 4 inches, trees should be 15 to 20 feet tall (Plantation age 3-5).
Prune up to 8 to 9 feet (Leave 50% or no less than 12 feet of canopy).
Second lift should be done when crop tree diameter at the base of the canopy reaches 4 inches,
tree should be 30 to 40 feet tall
Prune to 18 - 20 feet (Leave 12 - 16
no less than 40% of the canopy)