A field method for estimating sun-leaf angles in productivity studies

  • Smart R
  • Lang A
  • 3

    Readers

    Mendeley users who have this article in their library.
  • 1

    Citations

    Citations of this article.

Abstract

A weighted mean leaf-sun angle is defined as the ratio of the projection of sunlit leaf area on a plane normal to the solar beam to total sunlit leaf area. The former area may be measured photographically, the latter by application of a photosensitive chemical. The accuracy of the technique was assessed by numerical analysis over a range of leaf-sun angles, light flux densities and degrees of light saturation of photosynthesis. The maximum error was shown to be of order 16% which is considered acceptable in view of the simplicity of the technique. © 1973.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • R. E. Smart

  • A. R G Lang

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free