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Agronomy Journal Abstract -

Root Growth Pressures of Cotton, Peas, and Peanuts1


This article in AJ

  1. Vol. 61 No. 3, p. 398-402
    Received: Sept 27, 1968

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  1. Howard M. Taylor and
  2. Larry F. Ratliff2



The root growth force that cotton (Gossypium hirsutum L. ‘Coker 413–68’), pea (Pisum sativum L. ‘Brunswick’), and peanut (Arachis hypogaea L. ‘Virginia Bunch’) seedlings developed was measured with an unbonded strain gage force transducer. Root growth pressure, defined as root growth force per unit root cross-sectional area, averaged 9.4, 13.0, and 11.5 bars for cotton, peas, and peanuts, respectively, but values varied widely within each variety. Osmotic potential and root growth pressure results supported Pfetter's contention that cellular osmotic potential created the stress necessary for root growth pressure development.

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