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| Web URL(s): | http://a-c-s.confex.com/crops/2006am/techprogram/P27233.HTM
Last checked: 2/23/2007 |
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| Publication Type:
| Report |
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| Material Type: | CD-ROM |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Lewis, Jason;
Bremer, Dale |
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| Author Affiliation: | Kansas State University, Manhattan, Kansas |
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| Title: | Effects of turfgrass species on nitrous oxide fluxes under typical nitrogen management regimes |
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| Section: | 68: Graduate student oral competition
Other records with the "68: Graduate student oral competition" Section
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| Meeting Info.: | Indianapolis, Indiana: November 12-16, 2006 |
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| Source: | Abstracts: 2006 International Annual Meetings [ASA/CSSA/SSSA]. 2006, p. [1]. |
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| Publishing Information: | [Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Choice of species; Nitrogen fixation; Nitrous oxide; Urban soils; Cynodon dactylon; Zoysia Japonica; Lolium perenne
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| Abstract/Contents: | "Urban ecosystems are rapidly expanding and their effects on atmospheric nitrous oxide (N2O) inventories are unknown. A field study was initiated to quantify the magnitude and patterns of N2O fluxes and to estimate cumulative seasonal fluxes from three turfgrass species. Soil fluxes of N2O were measured over the summer and fall of 2005 using static surface chambers and gas chromatography. Field plots were established on existing swards of two warm season turfgrasses, bermudagrass (Cynodon dactylon (L.)) and zoysiagrass (Zosia japonica (Steud.)), and one cool season turfgrass, perennial ryegrass (Lolium perenne (L.)) in northeastern Kansas, USA. Plots were fertilized with urea N at 145 kg ha-1 yr-1 in bermudagrass and perennial ryegrass, and 60 kg ha-1 yr-1 in zoysiagrass, which were considered optimum fertilization rates for maintaining high quality turfgrass in each respective species. Soil temperature and volumetric water content was collected at 5 cm. Fluxes ranged from 18.9 to 1939.5 µg m-1 hr-1 in bermudagrass, from -11.4 to 767.8 µg m-1 hr-1 in perennial ryegrass, and from 22.3 to 767.8 µg m-1 hr-1 in zoysiagrass. Seasonal fluxes of N2O during the study were 1.10 kg ha-1 in bermudagrass, 0.57 kg ha-1 in perennial ryegrass, and 0.82 kg ha-1 in zoysiagrass. Fluxes from perennial ryegrass were lower than from bermudagrass, despite receiving the same N nutrition input. Fluxes of N2O were generally greater when soil water content increased. Results indicated significant N2O emissions from the three turfgrass species that were strongly affected by management practices, which potentially could be manipulated to reduce N2O emissions from urban landscapes." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lewis, J., and D. Bremer. 2006. Effects of turfgrass species on nitrous oxide fluxes under typical nitrogen management regimes. Agron. Abstr. p. [1]. |
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| Web URL(s):
http://a-c-s.confex.com/crops/2006am/techprogram/P27233.HTM
Last checked: 2/23/2007 |
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MSU catalog number: S1 .A58 |
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