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This article in CS

  1. Vol. 8 No. 3, p. 291-292
     
    Received: Sept 28, 1967


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doi:10.2135/cropsci1968.0011183X00080003009x

Contribution of Leaves at Different Canopy Levels to Seed Production of Upright and Lodged Soybeans (Glycine max (L.) Merrill)1

  1. T. J. Johnston and
  2. J. W. Pendleton2

Abstract

Abstract

In a 2-year study at Urbana, Illinois, upright soybeans (Glycine max (L.) Merrill) yielded 10% more than naturally lodged plants. Defoliation treatments applied to the upper, middle and lower third of individual soybean plants growing in natural ecosystems reduced their seed yields by 17, 22 and 4% respectively as compared to nondefoliated plants. Removal of leaves from a particular area of the plant generally decreased seed yields within that area but also affected the yields of other areas of the plant.

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