Bark yields of 11-year-old loblolly pine as influenced by competition control and fertilization

Abstract

Bolts cut from 11-year-old loblolly pines (Pinus taeda L.) were measured to determine the effects of applications of fertilizer and competition control treatments on the amount of pine bark produced. Bark thickness at breast height was not significantly affected by any of the treatments. Regression analysis showed that the dry weight of bark per unit surface area of the bolt increased as the volume of the bolt increased. The regressions for unfertilized and fertilized trees were significantly different: the fertilized trees had less bark. Because bark weight is correlated with bole diameter, bolts were placed in 20-mm-wide inside-bark diameter classes. Fertilizer and woody plant control treatments decreased me in bark weight from 71.6 to 59.7 kg m^-3 of wood for bolts in the 120-m class and from 72.9 to 62.0 kg m^-3 for those in the 140-mm class.

Citation

Tiarks, Allan E.; Haywood, James D. 1992. Bark yields of 11-year-old loblolly pine as influenced by competition control and fertilization. Seventh Biennial Southern Silvicultural Research Conference, Mobile, AL, November 17-19, 1992. p. 525-529