Southern Research Station Headquarters - Asheville, NC
Main Logo of Southern Research Station, Stating: Southern Research Station - Asheville, NC, with a saying of 'Science you can use!'
[Images] Five photos of different landscape

Publication Information

Mail this page   Give us your feedback on this publication

Title: Water Relations and Gas Exchange of Loblolly Pine Seedlings Under Different Cultural Practices on Poorly Drained Sites in Arkansas
Author(s): Rahman, Mohd S.; Messina, Michael G.; Fisher, Richard F.
Date: 2002
Source: In: Gen. Tech. Rep. SRS-48. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pg. 61-65
Description: Substantial forest acreage in the south-central U.S. is seasonally water-logged due to an underlying fragipan. Severely restricted drainage in the non-growing season leads to a reduced subsoil zone, which restricts root respiration. The same sites may also be subjected to summer drought. These climatic and edaphic problems may result in low seedling survival and reduced growth. To address these issues, we established ten research sites in southern Arkansas. Six sites in an incomplete factorial design were established in 1999, each with four bedded treatments: 1) control (no subsequent treatment), 2) fertilized during the first two years after planting, 3) complete weed control until canopy closure, and 4) complete weed control and continuous fertilization as per foliar analysis; and two non-bedded treatments: 1) control and 2) fertilization and complete weed control in the first year. Water relations data (diurnal water potential, stomatal conductance, and transpiration) and net CO2 assimilation were collected during the 1999 and 2000 growing seasons. This paper will include data from the 2000 growing season. Results to date show improved water relations and gas exchange from intensive culture.
View and Print this Publication (77 KB)
Publication Notes:
  • 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.
  • Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS Webmaster, srswebmaster@fs.fed.us if you notice any errors which make this publication unuseable.
[ Get Acrobat ] Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility




Publication Links:

FIA Resource Bulletins

Publications Search


Search for on-line publications
containing the following:

 


(Uncheck this box to search all R&D Publications.)

Small logo of the USDASmall logo of the Forest Service