skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The effects of fertilization and competition control on carbon and nutrient allocation and physiology in loblolly pine plantation. Quarterly report for the period July - September 1999

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
University of Georgia, D. B. Warnell School of Forest Resources, Athens, GA (US) (US)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EE) (US)
OSTI Identifier:
763182
Report Number(s):
DOE/GO/10363-Q
TRN: AH200103%%522
DOE Contract Number:
FC36-98GO10363
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Oct 1999
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CARBON; FERTILIZATION; NUTRIENTS; PHYSIOLOGY; PINES

Citation Formats

Ronald Hendrick, Rodney Will, Robert Teskey, Bruce Borders, Robert Bailey, Timothy Harringnton, and Daniel Markewitz. The effects of fertilization and competition control on carbon and nutrient allocation and physiology in loblolly pine plantation. Quarterly report for the period July - September 1999. United States: N. p., 1999. Web. doi:10.2172/763182.
Copy to clipboard
Ronald Hendrick, Rodney Will, Robert Teskey, Bruce Borders, Robert Bailey, Timothy Harringnton, & Daniel Markewitz. The effects of fertilization and competition control on carbon and nutrient allocation and physiology in loblolly pine plantation. Quarterly report for the period July - September 1999. United States. doi:10.2172/763182.
Copy to clipboard
Ronald Hendrick, Rodney Will, Robert Teskey, Bruce Borders, Robert Bailey, Timothy Harringnton, and Daniel Markewitz. Fri . "The effects of fertilization and competition control on carbon and nutrient allocation and physiology in loblolly pine plantation. Quarterly report for the period July - September 1999". United States. doi:10.2172/763182. https://www.osti.gov/servlets/purl/763182.
Copy to clipboard
@article{osti_763182,
title = {The effects of fertilization and competition control on carbon and nutrient allocation and physiology in loblolly pine plantation. Quarterly report for the period July - September 1999},
author = {Ronald Hendrick and Rodney Will and Robert Teskey and Bruce Borders and Robert Bailey and Timothy Harringnton and Daniel Markewitz},
abstractNote = {No abstract prepared.},
doi = {10.2172/763182},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1999},
month = {Fri Oct 01 00:00:00 EDT 1999}
}
Copy to clipboard
Technical Report:
View Technical Report (1.30 MB)
DOI:  10.2172/763182
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

  • ; ; ; ...
    No abstract prepared.

  • No abstract prepared.

  • The overall objective of this study was to determine if growth efficiency of young plantation loblolly pine and sweetgum can be maintained by intensive forest management and whether increased carbon gain is the mechanism controlling growth efficiency response to resource augmentation. Key leaf physiological processes were examined over two growing seasons in response to irrigation, fertigation (irrigation with a fertilizer solution), and fertigation plus pest control (pine only). Although irrigation improved leaf net photosynthesis in pine and decreased stomatal sensitivity to vapor pressure deficit in sweetgum, no consistent physiological responses to fertigation were detected in either species. After 4 yearsmore » of treatment, a 3-fold increase in woody net primary productivity was observed in both species in response to fertigation. Trees supplemented with fertigation and fertigation plus pest control exhibited the largest increases in growth and biomass. Furthermore, growth efficiency was maintained by fertigation and fertigation plus pest control, despite large increases in crown development and self-shading. Greater growth in response to intensive culture was facilitated by significant gains in leaf mass and whole tree carbon gain rather than detectable increases in leaf level processes. Growth efficiency was not maintained by significant increases in leaf level carbon gain but was possibly influenced by changes in carbon allocation to root versus shoot processes.« less

  • ; ; ; ...
    Branches of nine-year-old loblolly pine trees grown in a 2x2 factorial combination of fertilization and irrigation were exposed for 11 months to ambient CO2. Rates of light-saturated net photosynthesis, maximum stomatal conductance to water vapor, and foliar nitrogen concentration (% dry mass) were assessed monthly from April 1993 until September 1993 on 1992 foliage (one-year-old) and from July 1993 to March 1994 on 1993 foliage (current-year).

  • ; - Bulletin of the Ecological Society of America; (United States)
    Nitrogen and phosphorus content and uptake rates were determined in loblolly pine grown at two CO[sub 2] levels (35 and 65 Pa) and three nutrient levels (7 mM NM[sub 4]NO[sub 3] + 1 mM PO[sub 4]; 7 mM NH[sub 4]NO[sub 3]+ 0.2 mM PO[sub 4]; 1 mM NH[sub 4]NO[sub 3] + 1 mM PO[sub 4]) over one growing season. Neither N uptake nor P uptake rates (on a root weight basis) were affected by CO[sub 2] enrichment in any of the nutrient treatments. Nutrient limitations by either N or P reduced the uptake rates of both N and P bymore » seedlings. As the growing season progressed, leaf N and P concentrations decreased, and with nonlimiting soil N, leaf N was diluted by elevated CO[sub 2]. Leaf P was unaffected by CO[sub 2] enrichment as were concentrations of both N and P in stems and roots. Under nonlimiting N, almost 70% of total plant N was allocated to needles. Greater N was allocated to roots at the expense of leaf N under conditions of low soil N and this was enhanced by CO[sub 2] enrichment. With limiting P, there was almost no change in allocation of N or P, and only a marginal effect of CO[sub 2] enrichment on P allocation. Stimulation of biomass production by elevated CO[sub 2] with no increase in nutrient uptake rates indicates an increase in nutrient use efficiency by the seedlings.« less