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Crop Science Abstract -

Relative Growth of Alfalfa and Birdsfoot Trefoil Seedlings under Low Light Intensity1

 

This article in CS

  1. Vol. 7 No. 3, p. 176-178
     
    Received: Feb 3, 1966


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doi:10.2135/cropsci1967.0011183X000700030002x
  1. Clee S. Cooper2

Abstract

Abstract

Growth of ‘Vernal’ alfalfa and ‘Tana’ birdsfoot trefoil seedlings at three ages was measured under four light intensities, 2153 to 8611 lux, in growth chambers. With decreasing light: intensity or seedling age, less of the dry matter accumulated during the growth period was partitioned into roots and more into stems. Relative growth rate of both species decreased similarly with decreasing light intensity due to decreased net assimilation rate. Leaf area ratio of both species increased with decreasing light intensity. With but one exception, RGR of birdsfoot trefoil seedlings of all ages was greater than that of alfalfa.

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