Skip to Main Content
Management intensity and genetics affect loblolly pine crown characteristicsAuthor(s): B. Landis Herrin; Scott D. Roberts; Randall J. Rousseau
Source: In: Butnor, John R., ed. 2012. Proceedings of the 16th biennial southern silvicultural research conference. e-Gen. Tech. Rep. SRS-156. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 146-150.
Publication Series: Paper (invited, offered, keynote)
Station: Southern Research Station
PDF: View PDF (339.79 KB)
DescriptionThe development of elite loblolly pine (Pinus taeda L) genotypes may lead to reduced planting densities as a means of reducing establishment costs. However, this can lead to undesirable crown and branch characteristics in some genotypes. Selecting appropriate genetic material, combined with appropriate silvicultural management, is essential to realizing potential genetic gains. A study was established in 2008 to examine the performance of two loblolly pine varieties, a “crop tree” ideotype and a “competitor” ideotype, at different initial tree spacings and management intensities. After two growing seasons, genetics were already affecting crown morphology. The crop tree ideotype was, on average, taller, had longer and wider crowns, greater crown volume, and less acute branch angles. Management intensity had greater impact on crown characteristics than genotype. Intensive management resulted in trees that averaged over 1.1 ft (~24%) taller with wider crowns (0.7 ft, 30%), longer crowns (0.9 ft, 32%), and greater crown volume (5.5 ft3, 133%) relative to non-intensive management. Differences due to management intensity were related to reduced crowding from competing vegetation and lower incidence of damage from pine tip moth and sawfly.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
CitationHerrin, B. Landis; Roberts, Scott D.; Rousseau, Randall J. 2012. Management intensity and genetics affect loblolly pine crown characteristics. In: Butnor, John R., ed. 2012. Proceedings of the 16th biennial southern silvicultural research conference. e-Gen. Tech. Rep. SRS-156. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 146-150.
- Will crown ideotype help determine optimum varietal silviculture?
- Management intensity and genetics affect loblolly pine seedling performance
- Silviculture of varietal loblolly pine plantations: second year impacts of spacing and silvicultural treatments on varieties with differing crown ideotypes
XML: View XML