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| DOI: | 0.4141/cjps88-057 |
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| Web URL(s): | http://pubs.aic.ca/doi/pdfplus/10.4141/cjps88-057
Last checked: 10/01/2015
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| Publication Type:
| Refereed |
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| Author(s): | Ukrainetz, H.;
Campbell, C. A. |
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| Author Affiliation: | Research Station, Research Branch, Agriculture Canada, Saskatoon, Saskatchewan, Canada; and Research Station, Research Branch, Agriculture Canada, Swift Current, Saskatchewan, Canada, respectively. |
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| Title: | N and P Fertilization of Bromegrass in the Dark Brown Soil Zone of Saskatchewan |
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| Source: | Canadian Journal of Plant Science. Vol. 68, No. 2, April 1988, p. 457-470. |
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| Publishing Information: | Ottawa: Agricultural Institute of Canada |
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| # of Pages: | 14 |
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| Keywords: | TIC Keywords: Nitrogen; Phosphorus; Fertilization; Application methods; Bromus inermis; Quality
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| Geographic Terms: | Saskatchewan, Canada. |
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| Abstract/Contents: | "A 5-yr study was conducted on a Dark Brown loam at Scott, Saskatchewan to determine the effect of rate of ammonium nitrate-N (34-0-0) and urea-N (46-0-0) on bromegrass (Bromus inermis Leyss.) production and quality, N recovery and N use efficiency when the N was applied either annually or as a single application at the start of the experiment. The effect of phosphorus (P) on the above listed parameters was also assessed. Each N source was applied at once-only rates of 0, 100, 200, 400, and 800 kg ha-1 and annual rates were 0, 50, 100 and 200 kg ha-1. Phosphorus was applied in 1976, 1979 and 1981 at 100 kg ha-1 P2 O5. Forage dry matter was positively related to rpecipitation received in April-June (r=0.91**) and in April of the crop year plus the previous September (r=0.80**). Dry matter response to N rates generally increased at a decreasing rate in early years but linearly in later years. Over the first 4 yr, annual applications of N resulted in up to 37% more dry matter than the single applications. Dry matter production was generally greater when ammonium nitrate was applied than when urea was used; these differences were more consistent at medium N rates. Dry matter was increased by P only when N was applied. Nitrogen concentration in forage was directly related to N rate in years of good precipitation, was greater in dry than wet years, and when N was applied annually, but was unaffected by N source. Phosphorus fertilization increased P concentration of forage but heavy dry matter production reduced P concentration. Annual N applications increased P concentration in forage only in the first year and N source had no effect. Toxic concentrations of NO3 - N in the forage occurred in the first year only at N rates >/= 200 kg ha-1 and were directly related to the amount of N applied. Except for the 800 kg ha-1 N rate in the second year, there were no further indications of NO3-N toxicity. Accumulated N use efficiency decreased linearly with increasing N rate and was greater for ammonium nitrate than for urea except at very high N rates. Accumulated N recovery was inversely related to N rate for the single method of application but unaffected by N rate applied annually. Over the first 4 yr, accumulated N recovery was greater for the single application at low N rates, but was greater for annual applications of N at high N rates. P fertilization increased N recovery." |
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| Language: | English |
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| References: | 37 |
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| Note: | Tables
Graphs
Abstract lang: Fre. |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ukrainetz, H., and C. A. Campbell. 1988. N and P Fertilization of Bromegrass in the Dark Brown Soil Zone of Saskatchewan. Can. J. Plant Sci. 68(2):p. 457-470. |
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| DOI: 0.4141/cjps88-057 |
| Web URL(s):
http://pubs.aic.ca/doi/pdfplus/10.4141/cjps88-057
Last checked: 10/01/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 1 .C3 |
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