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1998 | 458 |
Tytuł artykułu

Nitrate losses under various nitrogen management systems

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The effectiveness of nitrogen management systems in reducing the mo­vement of nitrate in surface and sub-surface flow in the Little Vermilion River watershed is presented. Nitrate in sub-surface tile flow have been monitored for five years from fields with various tillage and cropping management practices. Water samples have also been obtained along the mainstream of the watershed. Concentrations of nitrate differed little among specific sampling locations along the river, but they definitely followed a seasonal cycle. Nitrate concentrations from the tile drains varied considerably between fields depending upon the ma­nagement systems used, primarily based on the level of nitrogen fertilizer ap­plied. The effect of the application of large amounts of nitrogen fertilizer, par­ticularly as a pre-plant operation, is clearly shown in the nitrate-N concentra­tions from tile drains. The pre-plant anhydrous-N application systems with ave­rage nitrogen application of 100 kg/ha/yr. had a mean concentration of nitrate-N of 16.8 mg/L while the side-dress and manure application systems with average nitrogen application of 85 kg/ha/yr. had a mean concentration of nitrate-N of 9.8 mg/L. The mean concentration of nitrate-N from a permanent meadow field was 1.1 mg/L. Nitrate-N losses from cropped fields have ranged from 15 to 41 kg/ha/yr. depending upon the management system. Losses from the grassed system was 3.8 kg/ha/yr. and in the most upstream river station was 12 kg/ha/yr. of nitrate-N.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
458
Opis fizyczny
p.431-442,fig.,ref.
Twórcy
  • Department of Agricultural Engineering, University of Illinois at Urbana-Champaign, 1304 West Pennsylvania Avenue, Rm.332, Urbana, IL 61801, USA
autor
  • Department of Agricultural Engineering, University of Illinois at Urbana-Champaign, Urbana-Champaign, USA
autor
  • Department of Agricultural Engineering, University of Illinois at Urbana-Champaign, Urbana-Champaign, USA
autor
  • Department of Agricultural Engineering, University of Illinois at Urbana-Champaign, Urbana-Champaign, USA
autor
  • Department of Agricultural Engineering, University of Illinois at Urbana-Champaign, Urbana-Champaign, USA
  • Department of Hydraulic Structures, Warsaw Agricultural University - SGGW, Warsaw, Poland
Bibliografia
  • [1] Baker J.L., Johnson H.P. 1981. Nitrate Nitrogen in tile drainage as affected by fertilization. Journal of Environmental Quality 10(4): 519-522.
  • [2] Illinois State Climatologist Office. 1998. Internet address: http://mcc.-sws.edu/summary/data/118740.txt.
  • [3] Jacobs T.C., Gilliam J.W. 1985a. Headwater stream losses of nitro­gen from two coastal plain watersheds. Journal of Environmental Quality 14(4): 467-472.
  • [4] Jacobs T.C., Gilliam J.W. 1985b. Riparian losses of nitrate from agricultural drainage water. Journal of Environmental Quality 14(4): 472-478.
  • [5] Jury W.A. 1975. Solute travel time estimates for tile drained fields: II. Applications to experimental studies. Soil Science Society of America Proceedings 39: 1024-1028.
  • [6] Keeney D.R., Deluca Т.Н. 1993. Des Moines river nitrate in relation to watershed agricultural practices. Journal of Environmental Qua­lity 22: 267-272.
  • [7] Kladivko E.J., Van Scoyoc G.E., Monke E.J., Oats K.M., Pask W. 1991. Pesticide and nutrient management into subsurface tile drains on a silt loam soil in Indiana. Journal of Environmental Quality 20: 264-270.
  • [8] Kohl D.H., Shearer G.B., Commoner B. 1971. Fertilizer nitrogen: contribution to nitrate in surface water in a corn belt watershed. Science 174: 1331-1334.
  • [9] Logan T.J., Randall G.W., Timmons D.R. 1980. Nitrate content of tile drainage from cropland in the north central region. Ohio Agri­cultural Research and Development Center, Research Bulletin 1119, Wooster, Ohio, U.S.A.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-e1caa622-a7ab-4f0d-838e-79301c0fe3ef
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