HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Hoyle, M. C. Search for Related Content PubMed Articles by Hoyle, M. C. Agricola Articles by Hoyle, M. C.

Variation in Content of Microelements in Yellow Birch Foliage Due to Season and Soil Drainage¹

ABSTRACT

The levels of foliar Al, Mn, Zn, Cu, and B were determined in yellow birch (Betula alleghaniensis Britton) trees growing on well-drained and poorly drained till soils. The data suggested general trends in foliar nutrient levels during the growing season. Concentrations of the five microelements usually decreased early in the season then leveled off or increased. Mn and B on well-drained soil did not show the early season decline. Total content of each microelement usually increased with time, though rates varied. Microelement uptake was comparable on both soils for Cu and B; whereas significantly higher levels of Al, Mn, and Zn were reached on poorly drained soil. Excessive amounts of foliar Mn in yellow birch may indicate toxic levels.

¹ Contribution from the Northeastern Forest Expt. Sta., Forest Service, USDA, Upper Darby, Pa.

² Plant Physiologist, Northeastern Forest Exp. Sta., Forest Service, Durham, N.H. 03824.

Received for publication September 25, 1968. Accepted for publication February 24, 1969.