- Clark III, Alexander
USDA Forest Service, Southeastern Forest Experiment Station, Athens, GA
- Schmidtling, Ronald C.
USDA Forest Service, Southern Forest Experiment Station, Gulfport, MS
Cultivation before and after planting plus fertilization 1 year after planting significantly increased diameter and height growth without reducing weighted average specific gravity of juvenile or mature wood of loblolly (Pinus taeda L.), slash (P. elliottii Engelm. var. elliottii), and longleaf pines (P. palustris Mill). At age 25, 24 years after fertilization, slash pine is outperforming longleaf and loblolly on control plots and contains only 33 percent of its basal area in juvenile wood. Longleaf and loblolly grew more than slash on the cultivation plus high fertilization plots but produced an average of 16 percent more juvenile wood.