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| DOI: | 10.2134/agronj2011.0205 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/articles/104/2/344
Last checked: 11/02/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Guertal, E. A.;
Howe, J. A. |
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| Author Affiliation: | Agronomy and Soils, Auburn University, AL |
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| Title: | Nitrate, ammonium, and urea leaching in hybrid bermudagrass as affected by nitrogen source |
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| Section: | Agronomy, soils & environmental quality
Other records with the "Agronomy, soils & environmental quality" Section
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| Source: | Agronomy Journal. Vol. 104, No. 2, March 2012, p. 344-352. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy |
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| # of Pages: | 9 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/articles/104/2/344?show-t-f=tables&wrapper=no
Last checked: 11/02/2016
Access conditions: Item is within a limited-access website
Notes: Tables only
https://dl.sciencesocieties.org/publications/aj/articles/104/2/344?show-t-f=figures&wrapper=no
Last checked: 11/02/2016
Access conditions: Item is within a limited-access website
Notes: Figures only
https://dl.sciencesocieties.org/publications/aj/abstracts/104/2/344
Last checked: 11/02/2016
Access conditions: Item is within a limited-access website
Notes: Abstract only |
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| Keywords: | TIC Keywords: Clay soils; Cynodon dactylon; Fertilization rates; Irrigation frequency; Leachates; Loamy sand soils; Lysimeters; Mineralization; Nitrate losses; Nitrates; Organic matter; Sandy soils; Urea
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| Abstract/Contents: | "Nitrate leaching in turfgrass has been widely studied and found to increase when N was over-applied, soluble N sources were used, N was applied to sandy soils, or excessive irrigation was applied. The objective of this study was to evaluate N leaching as nitrate, ammonium, and urea from hybrid bermudagrass on three soils (Sumter clay [fine-silty, carbonatic, thermic Rendollic Eutrudept], Marvyn loamy sand [fine-loamy, kaolinitic, thermic Typic Kanhapludult], and sand) with three N sources (urea, polymer-coated urea, urea plus nitrification/urease inhibitor) and a control. Field lysimeters were fertilized at 7.3 g N m-2 in July, and leachate collected for 10 to 12 wk each year for 2 yr. Leachate was analyzed for nitrate-N, ammonium-N, and urea-N. In the first year, significant nitrate-N was collected, regardless of N source. In that year nitrate-N in leachate from the clay soil frequently exceeded 10 mg N L-1, even in the unfertilized treatment. High organic matter in the clay soil and N mineralization following construction contributed to nitrate leaching. In the second year, nitrate-N in leachate never exceeded 10 mg N L-1, regardless of N source or soil type. Differences in total nitrate-N and ammonium-N leached due to N source were found in the loamy sand and sand soils, typically in the order: urea ≥= urea + inhibitor ≥= polymer-coated urea = unfertilized control. Small quantities of urea-N leached throughout the experiments. If applied at a recommended rate to established turfgrass, leaching of N did not present an environmental hazard. Use of a slow-release N source sometimes further reduced N losses in leachate." |
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| Language: | English |
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| References: | 31 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Guertal, E. A., and J. A. Howe. 2012. Nitrate, ammonium, and urea leaching in hybrid bermudagrass as affected by nitrogen source. Agron. J. 104(2):p. 344-352. |
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| DOI: 10.2134/agronj2011.0205 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/articles/104/2/344
Last checked: 11/02/2016
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2212646a |
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