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Agronomy Journal Abstract -

Cold Resistance of Potomac Orchardgrass as Related to Cutting Management, Nitrogen Fertilization, and Mineral Levels in the Plant Sap1


This article in AJ

  1. Vol. 57 No. 6, p. 525-529
    Received: Dec 3, 1964

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  1. John H. Howell and
  2. G. A. Jung2



Cold resistance development and maintenance by orchardgrass, as measured by indirect methods, was affected to a limited extent by cutting management and levels of nitrogen fertilization. Orchardgrass cut in early bloom was generally more cold resistant than grass cut earlier. Significant negative correlations were obtained between the percentages of the total electrolyte content exosmosed from frozen stubble on 11 fall, winter, and spring sampling dates and the concentrations of potassium, sodium, and calcium in the plant sap.

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