Journal Article

A simple method to determine leaf angles of grass species

G. Deckmyn, I. Nijs and R. Ceulemans

in Journal of Experimental Botany

Volume 51, issue 349, pages 1467-1470
Published in print August 2000 | ISSN: 0022-0957
Published online August 2000 | e-ISSN: 1460-2431 | DOI:
A simple method to determine leaf angles of grass species

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  • Plant Sciences and Forestry


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There are several very accurate methods to determine leaf angles in closed canopies. However, these are generally very time‐consuming or require special equipment. Average canopy leaf angles were derived from simple height and blade length measurements. An exponential relationship between the height/length ratio and the average blade leaf angle was used. The method was tested for two grass species, Dactylis glomerata and Festuca arundinacea, grown under different UV‐B levels. The results clearly show that the method is reasonably accurate and able to identify UV‐B induced changes in leaf angle. To get these results only 50 measurements of leaf blade height and length were necessary to calculate the allometric relationship, after which 10 length and height measurements from a canopy were used to calculate the average canopy leaf angle.

Keywords: Leaf angles; height/length ratio; grasses.

Journal Article.  1792 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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