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| Web URL(s): | https://scisoc.confex.com/scisoc/2016am/webprogram/Paper99447.html
Last checked: 11/22/2016 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Grubbs, Becky;
Henry, Gerald M.;
Cabrera, Miguel L.;
Bowling, William Jackson |
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| Author Affiliation: | Grubbs: Crop and Soil Sciences, University of Georgia-Athens, Athens, GA; Henry: University of Georgia-Athens, Athens, GA; Cabrera: University of Georgia-Athens, Athens, GA; Bowling: Dept. of Crop and Soil Sciences, University of Georgia, Athens, GA |
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| Title: | Effect of mowing frequency on clipping decomposition and nitrogen return |
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| Section: | Turfgrass management poster
Other records with the "Turfgrass management poster" Section
C05 turfgrass science
Other records with the "C05 turfgrass science" 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. 99447. |
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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: Clipping decomposition; Cynodon dactylon x Cynodon transvaalensis; Mowing frequency; Nitrogen efficiency; Nitrogen fate; Nitrogen mineralization
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| Cultivar Names: | TifTuf |
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| Abstract/Contents: | "Evaluating nitrogen fate following clipping decomposition may allow us to improve nitrogen-use efficiency (NUE) in turfgrass systems. The objective of this study was to evaluate the effect of mowing frequency on N mineralization and NH3 volatilization from decomposing 'TifTuf' bermudagrass (Cynodon dactylon x C. transvaalensis) clippings applied to the soil surface. Field trials were established at two University of Georgia research facilities in Athens, GA during the summer of 2015. Plots measured 1.6 x 1.4 m and were arranged within a randomized complete block design with four replications. We had four treatments, mowing at 3, 7, 10, or 14-day intervals using a Honda Twin-Blade 3-in-1 rotary push mower set to a height of 5.7 cm to simulate home lawn height. Clippings were harvested 40 days after trial initiation and weighed to determine total biomass output per plot (g/m2). Soil was collected from each location, packed into 5.08-cm diameter polyvinyl chloride cylinders and adjusted to -0.33 MPa. Grass clippings were air-dried for 48 h and placed directly onto the soil surface in each cylinder in quantities proportionate to in situ area density. For the duration of the 90-d incubation period, each cylinder was sealed in a 1-L glass container and stored in a controlled environment chamber at a constant temperature of 28 °C. Cumulative evolved NH3 was trapped with 0.1 H2SO4, and inorganic N in tissue extracts and soil were analyzed after 90 d. Preliminary results indicate that mowing frequency may be an important factor in controlling % NH3 volatilization from decomposing grass clippings and one pathway to improving overall NUE in turfgrass systems. " |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"169-1714" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Grubbs, B., G. M. Henry, M. L. Cabrera, and W. J. Bowling. 2016. Effect of mowing frequency on clipping decomposition and nitrogen return. Agron. Abr. p. 99447. |
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Last checked: 11/22/2016 |
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