Title: Foliar nutrient variation in four species of upland oak
Author: Auchmoody, L. R.; Hammack, K. P.;
Source: Res. Pap. NE-331. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 16p.
Publication Series: Research Paper (RP)
Description: Sampling of forest tree foliage for nutrient analyses is commonly restricted to specific and often dificult-to-reach locations such as the uppermost sun leaves growing on the south side of the crown. A study of 60-year-old red, white, chestnut, and scarlet oaks growing near Parsons, West Virginia, suggests that the easier-to-reach foliage from the lower crown is equally well suited for nutrient sampling. In this study, 10 individuals of each species were sampled. Foliage samples were taken from the terminal shoot, from each cardinal point in the upper unshaded section of the crown, from each cardinal point in the lower section, and from interior crown positions. Samples were analyzed for N, P, K, Ca, Mg, Mn, and Fe; and variation within trees, among trees of similar species, and between species was determined for each element. Direction of foliage orientation within the crown did not influence nutrient composition. Concentrations of K, Ca, and Mg were generally higher in the lower than in the upper crown, while N, P, Mn and Fe concentrations were unrelated to position. Tree-to-tree variation was approximately the same for all crown positions. Many differenees in foliar nutrient composition occurred among species.
- 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.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
XML: View XML
Auchmoody, L. R.; Hammack, K. P. 1975. Foliar nutrient variation in four species of upland oak. Res. Pap. NE-331. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 16p.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility