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Cold Resistance of Potomac Orchardgrass as Related to Cutting Management, Nitrogen Fertilization, and Mineral Levels in the Plant Sap 1
Author(s) -
Howell John H.,
Jung G. A.
Publication year - 1965
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1965.00021962005700060003x
Subject(s) - agronomy , potassium , human fertilization , nitrogen , bloom , sodium , environmental science , biology , chemistry , zoology , ecology , organic chemistry
Synopsis 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.