Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Charles J. Pell; Lisa J. Samuelson
    Date: 2016
    Source: In:Proceedings of the 18th biennial southern silvicultural research conference. e-Gen. Tech. Rep. SRS-212. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 614 p.
    Publication Series: General Technical Report (GTR)
    Station: Southern Research Station
    PDF: Download Publication  (311.0 KB)

    Description

    Climate models project decreased soil water availability in the southeastern United States, which may impact loblolly pine (Pinus taeda L.) productivity. In conjunction with an interdisciplinary project known as PINEMAP, the objective of this study was to investigate the interactive effects of fertilization and a 30 percent reduction in throughfall on physiological characteristics that affect forest productivity. Stand growth, leaf area index (LAI) and leaf physiology were monitored over three years of treatment. Only the most recent preliminary results are presented here for June 2014. The study is a factorial combination of throughfall reduction (30 percent versus ambient) and fertilization (fertilized versus non-fertilized) treatments in a now 9-year-old loblolly pine plantation located in Georgia. No interactive effects of treatment were significant for any variable. Fertilization increased basal area by 19 percent, basal area increment by 27 percent, and peak LAI by 29 percent. Throughfall reduction reduced peak LAI by 17 percent. Fertilization decreased stomatal conductance, likely in response to higher LAI and increased water use combined with low ambient precipitation. These results indicate fertilization can increase growth and LAI but increased LAI may lead to short-term leaf physiological sensitivity to drought.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Pell, Charles J.; Samuelson, Lisa J. 2016. Effects of fertilization and three years of throughfall reduction on leaf physiology of loblolly pine.  In:Proceedings of the 18th biennial southern silvicultural research conference. e-Gen. Tech. Rep. SRS-212. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 4 p.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/50699