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Agronomy Journal Abstract -

Effect of Potassium Rate and Source on Yield and Composition of Bromegrass in Alaska1


This article in AJ

  1. Vol. 56 No. 5, p. 484-487
    Received: Feb 29, 1964

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  1. Winston Laughlin and
  2. Sigmund H. Restad2



K application increased dry-matter yields. Each K increment increased the K content, tended to increase the sum of cations, and tended to decrease the Ca content and Ca/Mg ratio. The P and Mg contents were independent of K application. Forage contained very high Mg and low Ca producing a very low Ca/Mg ratio. Sulfate and muriate of potash were equally effective as K sources. Second clipping forage contained more P and Mg each year than first clipping forage.

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