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| Web URL(s): | https://scisoc.confex.com/scisoc/2016am/webprogram/Paper99645.html
Last checked: 12/01/2016 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Chen, Huaihai;
Shi, Wei;
Bowman, Daniel;
Williams, David;
Walker, John |
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| Author Affiliation: | Chen: Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC; Shi: Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC; Bowman: Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC; Williams: National Exposure Research Laboratory, U.S. Environmental Protection Agency, Durham, NC; Walker: National Risk Management Research Laboratory, U.S. Environmental Protection Agency, Durham, NC |
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| Title: | Assessing the potential of reactive N loss during transition from dormancy to growth in turfgrass chronosequence |
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| Section: | SSSA division: Soil biology and biochemistry
Other records with the "SSSA division: Soil biology and biochemistry" Section
Soil biology and biochemistry oral
Other records with the "Soil biology and biochemistry oral" Section
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| Meeting Info.: | Phoenix, Arizona: November 6-9, 2016 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2016, p. 99645. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Chemical properties of soil; Dormancy; Leachates; Nitrogen; Nitrogen fertilizers; Nitrogen losses; Temperature response; Urban habitat
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| Abstract/Contents: | "Turfgrass systems account for roughly 35% of total urban lands in the United States. Growing concerns have been raised over N loss from turfgrass systems, but mainly focused on inorganic N leaching. Thus, a comprehensive evaluation is needed on N loss via multiple species and/or pathways. Here, we examined both inorganic and organic N species in leachates and soil N2O emissions from intact soil cores of a bermudagrass chronosequence (i.e., 1, 15, 37, and 109 years old) that were collected in winter. The measurements were made almost daily for soil N2O emissions for 3 weeks, but once a week for N in leachates following water addition equivalent to 40mm precipitation. Four treatments were set up to further examine the impacts of temperature and N fertilizer, including CK (no N, 23°C), 30-N (30 kg N ha-1, 23°C), 60-N (60 kg N ha-1, 23°C), and 60-N-13 (60 kg N ha-1, 13°C). Compared to CK, 30-N and 60-N treatments increased total N in leachates by 203% and 411%, respectively, of which organic N accounted for 23-81%. Soil N2O emissions were also increased by 165% and 316%, respectively, accounting for 2-25% of total N loss. However, compared to 60-N, 60-N-13 significantly reduced N2O production by 69% and CO2 emissions by 63% but increased N leaching by 16%, indicating that low temperature limited microbial activity. Our data demonstrated that organic N leaching and soil N2O emission should not be overlooked as N loss pathways from turfgrass systems." |
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| Language: | English |
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| References: | 00 |
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| Note: | "209-5"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chen, H., W. Shi, D. Bowman, D. Williams, and J. Walker. 2016. Assessing the potential of reactive N loss during transition from dormancy to growth in turfgrass chronosequence. Agron. Abr. p. 99645. |
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| Web URL(s):
https://scisoc.confex.com/scisoc/2016am/webprogram/Paper99645.html
Last checked: 12/01/2016 |
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