Deep-planting small slash pine on old field sites in the Carolina sandhills
This study was established to investigate the effect of deep-planting on survival and growth of small slash pine seedlings. It is located on furrowed old fields in the Savannah River Project near Aiken, S.C. Seedlings were graded on size and root development, and planted at three depths: to the bud, halfway between root collar and bud, and at standard nursery depth. Each treatment was replicated three times on three surface soil types, sand, sandy loam, and loamy sand. In all cases deep-planting improved fifth-year survival, planting to the bud was best, and planting halfway between root collar and bud was better than standard planting. The best five-year height growth was obtained by planting halfway between root collar and the bud. Large seedlings had over-all better survival and height growth than smaller seedlings, but grade of stock caused no significant difference in survival when seedlings were planted to the bud.