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Agronomy Journal Abstract -

Barley Growth, Water Use, and Mineral Composition as Influenced by Oxygen Exclusion from Specific Regions of the Root System1

 

This article in AJ

  1. Vol. 57 No. 6, p. 629-631
     
    Received: May 10, 1965


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doi:10.2134/agronj1965.00021962005700060034x
  1. J. Letey,
  2. W. F. Richardson and
  3. N. Valoras2

Synopsis

Synopsis

Four treatments applied to the upper and lower halves of barley root systems consisted of A/A, N/A, A/N, and N/N where N represents very low oxygen (<1%) and A represents adequate oxygen in the order of upper/lower halves. Root weight in the upper half of A/A was similar to that in A/N and N/N was similar to N/A. In the lower half, the root weights of A/A and N/A were about equal and A/N equated N/N. Most water was removed from the half which had adequate oxygen. Top growth was highest under A/A and lowest under N/N.

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