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Web URL(s):https://www.dl.sciencesocieties.org/publications/cs/articles/42/5/1602
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https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/5/1602
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Publication Type:
i
Refereed
Author(s):Horgan, B. P.; Branham, B. E.; Mulvaney, R. L.
Author Affiliation:Department of Horticultural Science, University of Minnesota, St. Paul, MN
Title:Direct measurement of denitrification using 15N-labeled fertilizer applied to turfgrass
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Source:Crop Science. Vol. 42, No. 5, September/October 2002, p. 1602-1610.
Publishing Information:Madison, WI: Crop Science Society of America
# of Pages:9
Keywords:TIC Keywords: Denitrification; Nitrogen fertilizers; Nitrate losses; Poa pratensis; Potassium nitrate
Abstract/Contents:"Denitrification losses are a possibility from turfgrass because of frequent irrigation, multiple applications of N fertilizers, and an abundance of readily decompsable organic C in thatch and verdure. Field experiments were conducted to directly measure N2 and N2O evolved from a Flanagan silt loam soil under Kentucky bluegrass (Poa pratensis L.) or creeping bentgrass (Agrostis palustris Huds.). Mass spectrometric procedures were used to analyze atmospheric samples collected from replicated 15N fertilized turf (49 kg ha-1). Data showed that labeled fertilizer N (LFN) looses ranged from 2.1 to 7.3% for N2 and from 0.4 to 3.9% for N2O; that large N2 and N2O fluxes occurred after heavy rainfall events; and that more N2 was evolved than N2O. Emission of gas was detected while standing water was visible within cylinders, suggesting the transfer of gases from the flooded soil to the atmosphere through the turfgrass plants. Evolution of N2 and N2O was greater from creeping bentgrass treated with KNO3 than urea through the first 3-wk of the experiment, whereas N2 emission was greater for urea during the last 2 wk of the experiment, presumably because if NO3 production through nitrification. Nitrous oxide was detected on the day of fertilization with the KNO3 treatment, and the mole fraction of N2O decreased from 0.44 to 0.11 with each weekly application of N."
Language:English
References:63
Note:Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Horgan, B. P., B. E. Branham, and R. L. Mulvaney. 2002. Direct measurement of denitrification using 15N-labeled fertilizer applied to turfgrass. Crop Sci. 42(5):p. 1602-1610.
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Web URL(s):
https://www.dl.sciencesocieties.org/publications/cs/articles/42/5/1602
    Last checked: 05/05/2017
    Access conditions: Item is within a limited-access website
https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/5/1602
    Last checked: 05/05/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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