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): Mary Anne S. SayerShi-Jean S. SungDaniel J. Leduc; James Tule; Nicholas G. Muir; Phil Dougherty
    Date: 2018
    Source: In: Kirschman, Julia E., comp. Proceedings of the 19th biennial southern silvicultural research conference; 2017 March 14-16; Blacksburg, VA. e-Gen. Tech. Rep. SRS-234. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station
    Publication Series: Proceedings - Paper (PR-P)
    Station: Southern Research Station
    PDF: View PDF  (526.0 KB)

    Description

    A study of loblolly pine (Pinus taeda L.) reproduction began in January 2015 at the International Forest Company seed orchard near Evans, LA. Three levels of fertilization and two levels of irrigation were planned to favor reproduction. Fertilization levels were August broadcast application of (1) 112 kg ha-1 nitrogen plus boron (1N), (2) 1N plus August application of 28 kg ha-1 phosphorus (1N1P), or (3) 1N1P plus September application of 112 kg ha-1 nitrogen (2N1P). Irrigation treatments were no irrigation or drip irrigation of 1090 l ramet-1 day-1 between mid-July and late September. Foliar nutrition and vegetative and reproductive growth were not affected by fertilization or irrigation in summer of 2015. This may be attributed to ramet adaptation to edaphic conditions since establishment. Correlation between reproductive carbohydrate demand and photosynthate supply validates the importance of available carbohydrate to new vegetative and reproductive organs. Ramet environment and shoot order are likely to affect these relationships.

    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

    Sayer, Mary Anne S.; Sung, Shi-Jean S.; Leduc, Daniel J.; Tule, James; Muir, Nicholas G.; Dougherty, Phil. 2018. Understanding the fertilization and irrigation response of seed orchard loblolly pine. In: Kirschman, Julia E., comp. Proceedings of the 19th biennial southern silvicultural research conference; 2017 March 14-16; Blacksburg, VA. e-Gen. Tech. Rep. SRS-234. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station: 136-145.

    Keywords

    loblolly pine, Pinus taeda, irrigation, fertilization, seed orchard

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/57230