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The Influence of Ammonium Nitrate on the Growth and Yield of Crested Wheatgrass on the Oregon High Desert 1
Author(s) -
Sneva Forrest A.,
Hyder Donald N.,
Cooper C. S.
Publication year - 1958
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/agronj1958.00021962005000010012x
Subject(s) - acre , ammonium nitrate , agronomy , environmental science , precipitation , yield (engineering) , nitrate , fertility , zoology , ammonium , biology , geography , chemistry , ecology , meteorology , demography , metallurgy , materials science , organic chemistry , population , sociology
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.