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This article in AJ

  1. Vol. 50 No. 1, p. 40-44
     
    Received: May 6, 1957
    Published: Jan, 1958


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doi:10.2134/agronj1958.00021962005000010012x

The Influence of Ammonium Nitrate on the Growth and Yield of Crested Wheatgrass on the Oregon High Desert1

  1. Forrest A. Sneva,
  2. Donald N. Hyder2 and
  3. C. S. Cooper3

Synopsis

Synopsis

Spring yields of crested wheatgrass were more than doubled by application of 30 pounds per acre of N and were directly related to April and May temperatures but inversely related to the amount of fall and winter precipitation over a 4-year period. Annual yields were directly related to fertility rate, and to the amount of precipitation received in the preceding November 1 to June 1 period. Counting residual response, the 20 pounds per acre fertility rate returned 25 pounds of herbage per pound of N applied.

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