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This article in CS

  1. Vol. 27 No. 6, p. 1298-1301
     
    Received: Mar 5, 1987
    Published: Nov, 1987


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doi:10.2135/cropsci1987.0011183X002700060042x

An Indirect Method for Estimating Turfgrass Leaf Area Index1

  1. D. M. Kopec,
  2. J. M. Norman,
  3. R. C. Shearman and
  4. M. P. Peterson2

Abstract

Abstract

Turfgrass leaf area index (LAI) determinations are time consuming, labor intensive, and usually destructive. A system was devised in this study to measure LAI with a nondestructive method. Leaf area index was estimated indirectly based on canopy attenuation of light that was transmitted from a source placed at the base of the turf canopy. This methods essentially the reverse of a procedure used for measuring sunnfleck distribution. The correlation between LAI using the indirect method and LAI measured by use of a leaf area meter was r = 0.93. Leaf area index determinations were made without destroying experimental units. This nondestructive method allows turfgrass canopy growth estimation over time using the same experimental units.

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