Full TGIF Record # 81874
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Web URL(s):https://www.dl.sciencesocieties.org/publications/cs/articles/42/5/1595
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https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/5/1595
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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:Mass balance of 15N Applied to Kentucky bluegrass including direct measurement of denitrification
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Source:Crop Science. Vol. 42, No. 5, September/October 2002, p. 1595-1601.
Publishing Information:Madison, WI: Crop Science Society of America
# of Pages:7
Keywords:TIC Keywords: Mass balance; Nitrogen; Poa pratensis; Denitrification; Nitrogen fate; Nitrogen recovery; Potassium nitrate
Abstract/Contents:"Although the fate of fertilizer applied to turfgrass has been studied in the past, recovery of applied fertilizer N is typically low, and denitrification has been cited as the reason. The objectives of this research were twofold: (i) to examine the fate of 15N applied to the Kentucky bluegrass (Poa pratensis L.) turf as KNO3, including direct measurement of denitrification; and (ii) to determine whether and how plants affect fertilizer-N recovery. Polyvinyl chloride (PVC) cylinders, modified to permit atmospheric sampling, were used throughout field experiments during the spring and summer 1999 and a greenhouse experiment in 2000. Potassium nitrate (98.5 atom % 15N was applied in soultion at 49 kg N ha-1 to replicated plots, and atmospheric samples were collected three times a day from 0800 to 1100, 1100 to 1400, and 1400 to 1700h during a 6-wk period in the spring and 4-wk period during the summer of 1999. Emission of N2 or N2O ranged from 3.3 to 21.3% and from 0.3 to 5.9% of labeled fertilizer N LFN,respectively. Recovery of (LFN) in the soil or plant, plus that emitted as N2 or N2O, ranged from 57.4 to 73.2%. A 4-wk greenhouse experiment comparing LFN recovery for bare soil and turf, including gas emission and leachate, was initiated in the summer of 2000. Total emission of LFN as N2 or N2O was 19.0% for the turfgrass, as compared with 7.3% for the bare soil. Corresponding values for total recovery of LFN were 70.6 and 84.2%, respectively."
Language:English
References:51
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Horgan, B. P., B. E. Branham, and R. L. Mulvaney. 2002. Mass balance of 15N Applied to Kentucky bluegrass including direct measurement of denitrification. Crop Sci. 42(5):p. 1595-1601.
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Web URL(s):
https://www.dl.sciencesocieties.org/publications/cs/articles/42/5/1595
    Last checked: 05/05/2017
    Access conditions: Item is within a limited-access website
https://www.dl.sciencesocieties.org/publications/cs/pdfs/42/5/1595
    Last checked: 05/05/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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