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

This Article Full Text (PDF) An erratum has been published An erratum has been published 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 HighWire Citing Articles via Google Scholar Google Scholar Articles by Comerford, N. B. Articles by Fisher, R. F. Search for Related Content PubMed Articles by Comerford, N. B. Articles by Fisher, R. F. Agricola Articles by Comerford, N. B. Articles by Fisher, R. F.

Using Foliar Analysis to Classify Nitrogen-Deficient Sites¹

ABSTRACT

Discriminant analysis was used to evaluate the efficacy of using foliage N concentration (FN), an adjustment of the foliage N concentration based on stand age (FA), and a nitrogen/phosphorus ratio (N/P) to classify N-deficient sites. N/P was the superior index of N deficiency. FA was consistently a more reliable classification technique than FN, but it was not accurate enough for operational use. An N/P ratio of 14 to 15 proved to be the critical ratio. Foliage nutrient analysis was not a useful technique for classifying sites for their long-term response to N fertilization. This is due primarily to the fact that volume response to N fertilization is a function of site and stand conditions after fertilization as well as prior stand N status.

¹ Contribution of Soil Science Dep. and School of Forest Resources and Conservation, Univ. of Florida, Gainesville, FL 32611. Journal Series Paper no. 4672 of the Florida Agric. Exp. Stn.

² Assistant Professor of Forest Soils, Univ. of Florida, Gainesville, FL 32611 and Professor of Forest Soils, Utah State Univ., Logan, UT 84322.

Received for publication April 20, 1983. Accepted for publication February 16, 1984.

This article has been cited by other articles:

				A. U. Mallik Black Spruce Growth and Understory Species Diversity with and without Sheep Laurel Agron. J., January 1, 2001; 93(1): 92 - 98. [Abstract] [Full Text]