Full TGIF Record # 12562
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Web URL(s):https://dl.sciencesocieties.org/publications/aj/pdfs/60/5/AJ0600050560
    Last checked: 12/09/2016
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Publication Type:
i
Refereed
Author(s):McGinnies, William J.
Author Affiliation:Range Scientist, Crops Research Division, Agricultural Research Service, United States Department of Agriculture, Fort Collins, Colorado
Title:Effects of nitrogen fertilizer on an old stand of crested wheatgrass
Source:Agronomy Journal. Vol. 60, No. 5, September/October 1968, p. 560-562.
Publishing Information:Washington: American Society of Agronomy
# of Pages:3
Related Web URL:https://dl.sciencesocieties.org/publications/aj/abstracts/60/5/AJ0600050560
    Last checked: 12/09/2016
    Access conditions: Item is within a limited-access website
    Notes: Abstract only
Keywords:TIC Keywords: Application rates; Nitrogen fertilization; Urea; Agropyron desertorum; Yield response
Abstract/Contents:"Nitrogen fertilizer, in the form of urea, was applied to a 16-year-old stand of crested wheatgrass [Agropyron desertorum (Fisch. ex Link) Schult.] at rates of 0, 22, 45, 67, 90, 112 kg N/ha/yr. Annual and biennial applications were made over a 6-year period starting in 1962. Average herbage yield was increased by the addition of N at all rates. The greatest increase in herbage yield per kg N applied was at the 22-kg/ha rate; the increase in yield per kg N applied declined as the rate N increased. Total average herbage yield was highest at the 67-, 90-, 112-kg rates. Annual fertilizer applications produced significally higher average yields than biennial applications. The unfertilized plots declined in productivity during the period covered by the study, but as little as 22 kg N/ha/yr appeared to prevent the stand deterioration. A one-time only application of 0, 22, 45, 67, 90, 112, 135, 180, 225, 449 kg N/ha was applied in 1962. The 22- and 45-kg/ha rates increased herbage yield in the first year, and 67- to 225-kg/ha rates increased yields through 1965. The 449 kg/ha rate increased yield through 1966, but had no significant effect in 1967. The magnitude of the response to N and the relative efficiency per kilogram applied depended upon moisture availability."
Language:English
References:8
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McGinnies, W. J. 1968. Effects of nitrogen fertilizer on an old stand of crested wheatgrass. Agron. J. 60(5):p. 560-562.
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https://dl.sciencesocieties.org/publications/aj/pdfs/60/5/AJ0600050560
    Last checked: 12/09/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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