Evaluation of a portable chlorophyll meter to estimate chlorophyll and nitrogen contents in sugar maple (Acer saccharum Marsh.) leaves |
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| Authors: | A K van den Berg T D Perkins |
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| Institution: | Proctor Maple Research Center, University of Vermont, P.O. Box 233, Underhill Center, VT 05490, USA |
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| Abstract: | Portable, non-destructive chlorophyll meters could be a valuable tool for forest managers and researchers. The ability of such meters to assess both chlorophyll and nitrogen content has been well established for many agricultural species, but not well-studied for North American forest tree species. The objective of this study was to evaluate the ability of a portable chlorophyll meter to estimate chlorophyll (CHL) and nitrogen (N) content in sugar maple (Acer saccharum Marsh.) leaves by testing correlations between chlorophyll content index values (CCI) and extractable CHL and N in large heterogeneous samples. Significant correlations were observed between CCI and CHL (P ≤ 0.001, r2 = 76%) and CCI and N (P ≤ 0.001, r2 = 64%). These data indicate that the meter tested can be an effective tool for estimating relative chlorophyll and nitrogen content in sugar maple leaves. |
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| Keywords: | Chlorophyll meter Chlorophyll index Nitrogen Acer saccharum Sugar maple |
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