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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/2000/72159,%20NC%20State,%20Bowman,%20root%20arch.PDF
Last checked: 02/11/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Bowman, Daniel C.; Liu, Chunhua; Rufty, Thomas W. Jr. |
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| Author Affiliation: | North Carolina State University |
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| Monograph Title: | The Effects of Turfgrass Root Architecture on Nitrate Leaching and N Use Efficiency: [2000 Annual Report], [2000]. |
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| Publishing Information: | [Raleigh, North Carolina]: North Carolina State University |
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| # of Pages: | 5 |
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| Collation: | [5] pp. |
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| Abstract/Contents: | "An initial study demonstrated that nitrate leaching could be reduced during turf establishment by supplementing the fertilizer with sugar, thus stimulating microbial immobilization of the fertilizer. Mass emission of N from the controls amounted to 23%, 28%, 9% and 7% of the applied N for months one through four, respectively. The reduction over time corresponds to root development. Sucrose addition reduced both NO3 concentration and mass emission 40-65% compared to controls, suggesting significant increases in microbial immobilization. A second experiment investigated the effect of trinexapac-ethyl (Primo®) on nitrate leaching potential and N budget in 'Tifway' bermudagrass. TE reduced leaf growth by 30-40% compared to the control. There was no effect of TE on nitrate leaching following the first two N applications. Following the third AN application, however, approximately 50% less nitrate leached from the TE treated columns compared to the control, even though growth effects from TE had mostly disappeared. The results indicate that growth regulators can be used without increasing the potential for nitrate leaching. The effect of root distribution on NO3 leaching was investigated using hybrid bermudagrass, zoysiagrass, centipedegrass, and St. Augustinegrass. Different root distributions are established by staggering the planting time from one week to four months. Nitrate leaching was high from the most recently planted sod of both species. As little as one to two months establishment reduced leaching losses considerably, presumably due to root growth (depth and density). Bermudagrass established deeper and denser root systems more rapidly than did zoysiagrass, which is reflected in the cumulative leaching profiles. This experiment is currently being repeated using centipedegrass and St. Augustinegrass." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article, "The effects of turfgrass root architecture on nitrate leaching and nitrogen use efficiency", 2000 Turfgrass and Environmental Research Summary [USGA], 2000, p. 47, R=72159. R=72159 |
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| Note: | Tables
Graphs
Also appears as pp. 187-191 in the USGA Turfgrass Research Committee Reporting Binders for 2000. |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
No defined citation format for TGIF #: 215194 |
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http://archive.lib.msu.edu/tic/rpr/2000/72159,%20NC%20State,%20Bowman,%20root%20arch.PDF
Last checked: 02/11/2013
Requires: PDF Reader |
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