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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2009jou121.pdf
Last checked: 10/18/2011
Requires: PDF Reader |
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| Access Restriction: | Certain MSU-hosted archive URLs may be restricted to legacy database members. |
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| Publication Type:
| Refereed |
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| Author(s): | Young, N. G. M.;
Cisar, J. L.;
Erickson, J. E.;
Snyder, G. H.;
Sartain, J. B.;
Williams, K. E. |
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| Author Affiliation: | Young, Snyder: Soil and Water Science Department; Cisar and Williams: Environmental Horticulture Department, University of Florida, Fort Lauderdale, Florida; Erickson: Agronomy Department; Sertain: Soil and Water Science Department, University of Florida, Gainesville, Florida |
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| Title: | St. augustinegrass response to nitrogen sources under contrasting application rates and frequency |
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| Section: | Conservation/environmental quality
Other records with the "Conservation/environmental quality" Section
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| Meeting Info.: | Santiago, Chile: July 26-30 2009 |
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| Source: | International Turfgrass Society Research Journal. Vol. 11, No. Part 1, 2009, p. 121-136. |
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| Publishing Information: | Madison, WI: International Turfgrass Society |
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| # of Pages: | 16 |
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| Keywords: | TIC Keywords: Clipping weight; Fertilization rates; Groundwater contamination; Nitrogen; Quality; Slow-release fertilizers; Stenotaphrum secundatum; Visual evaluation
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| Abstract/Contents: | "In Florida, urban fertilizer regulations limit per-application nitrogen (N) rates to 49 kg N ha-1 in efforts to reduce NO3-N ground water contamination. County and city municipalities have imposed further restrictions that prohibit N fertilization during the 4-mo rainy season in Florida, which may nullify the benefits of using slow-release N sources (SRNS) for turfgrass management. A field study compared turfgrass response of polymer-coated urea (PCU), controlled-release liquid (CRL), and Milorganite® biosolid (BS) products applied at 49, 98, and 147 kg N ha-1 on 60, 120, and 180 d intervals, respectively. Treatments were compared by evaluating visual turfgrass quality and clipping yields; while N release was assessed using urea as a baseline applied every 60 d at 49 kg N ha-1. Turfgrass quality and yield were significantly affected by SRNS, rate, and application frequency. Nitrogen release from SRNS at current regulated N rates was insufficient to provide quality and yields comparable to urea. The most uniform SRNS response was obtained from PCU at 98 kg N ha-1. At higher rates residual N release was insufficient to maintain good turf quality throughout the desired 180-d window, although all SRNS applied at 147 kg N ha-1 were capable of producing acceptable turf quality during restricted periods with careful application timing. The wide diversity of agronomic responses within N class between management factors exemplifies the importance of conducting further SRNS evaluations on St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] where environmental implications are assessed before committing to regulatory rate and source limitations." |
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| Language: | English |
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| References: | 38 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Young, N. G. M., J. L. Cisar, J. E. Erickson, G. H. Snyder, J. B. Sartain, and K. E. Williams. 2009. St. augustinegrass response to nitrogen sources under contrasting application rates and frequency. Int. Turfgrass Soc. Res. J. 11(Part 1):p. 121-136. |
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| Web URL(s):
https://archive.lib.msu.edu/tic/its/articles/2009jou121.pdf
Last checked: 10/18/2011
Requires: PDF Reader |
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MSU catalog number: b2548899 |
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