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This article in AJ

  1. Vol. 49 No. 11, p. 586-589
    Received: Apr 8, 1957

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Influence of Organic Additions and Flooding on Iron and Manganese Uptake by Rice1

  1. Francis Clark,
  2. D. C. Nearpass and
  3. A. W. Specht22



Organic amendments in addition to flooding were injurious to rice yields and increased plant Fe uptake but decreased Mn. The Fe levels in plants grown submerged in water and unsubmerged without organic amendments were found comparable, but the submerged yields were higher and were accompanied by a Mn uptake more than tenfold that of rice grown unsubmerged. Marked yield response to Mn was obtained in upland cultures. Levels of Mn found in plants indicate that rice has a high requirement for and an exceptionally high tolerance to Mn.

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