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| DOI: | 10.21273/JASHS.117.1.75 |
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| Web URL(s): | https://journals.ashs.org/jashs/view/journals/jashs/117/1/article-p75.xml
Last checked: 11/08/2019
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Bowman, Daniel C.;
Paul, Jack L. |
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| Author Affiliation: | Department of Plant Science, University of Nevada; Department of Environmental Horticulture, University of California |
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| Title: | Foliar absorption of urea, ammonium, and nitrate by perennial ryegrass turf |
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| Source: | Journal of the American Society for Horticultural Science. Vol. 117, No. 1, January 1992, p. 75-79. |
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| Publishing Information: | Westport, CT: AVI Publishing Co. |
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| Keywords: | TIC Keywords: Absorption; Urea; Lolium perenne; Nitrogen; Assimilation
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| Abstract/Contents: | "The absorption and assimilation of 15N-labeled urea, (NH4)2SO4, and KNO3 applied to the foliage of perennial ryegrass (Lolium perenne L.) turf were examined under a controlled environment. Each source of N was dissolved in deionized water to a final concentration of 25 g N/liter and spray-applied at a rate of 5 g N/m2. Absorption of the fertilizer-N over 48 hours, as measured by 15N analysis of tissue digests, amounted to 35%, 39%, and 40% for the urea, (NH4)2SO4, and KNO3, respectively. Absorption was also estimated by a washing procedure procedure that measured the urea remaining on the foliage and by the increase in total N in the ryegrass tissue. There were no significant differences between the three methodsfor absorption of (NH4)2SO4 and KNO3. The washing method, however, significantly overestimated absorption of urea. Partitioning of the absorbed N between tissues was similar at 48 hours for all three N sources, averaging 32% in new leaves, 52% in old leaves and shoot tissue, and 16% in the roots. Most of the absorbed urea-and NH4-N was assimilated by hours, whereas only half of the N)3-N was reduced during that period." |
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| Language: | English |
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| References: | 20 |
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| See Also: | Other items relating to: Foliar Feeding & Uptake |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bowman, D. C., and J. L. Paul. 1992. Foliar absorption of urea, ammonium, and nitrate by perennial ryegrass turf. J. Am. Soc. Hortic. Sci. 117(1):p. 75-79. |
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| DOI: 10.21273/JASHS.117.1.75 |
| Web URL(s):
https://journals.ashs.org/jashs/view/journals/jashs/117/1/article-p75.xml
Last checked: 11/08/2019
Requires: PDF Reader |
| 
MSU catalog number: SB 1 .A46 |
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