Nitrogen dynamics of crop and soil subjected to different water and nitrogen inputs, including daily irrigation and steady-state fertilization measurements and modelling

Abstract

Major carbon and nitrogen fluxes through crop and soil were studied in a series of field experiments. Barley, winter wheat, a grass mixture cut for hay and the energy crop reed canary-grass (Phalaris arundinacea) were studied. The treatments ranged from drought to daily irrigation/fertilization with high doses of water and nitrogen. Crop biomass and nitrogen dynamics above and below ground and incident light as well as soil temperature, moisture and mineral N content were monitored. Litter decomposition experiments were also performed in the field. The results were used to parameterize, validate and improve a set of soil/plant simulation models. Selected experimental results and experiences gained from the water, C and N budgeting and modelling work are presented.

Keywords

cereals; clay soil; grass ley; roots; simulation modelling

Published in

Plant and Soil
1996, volume: 181, number: 1, pages: 13-17
Publisher: Springer Verlag (Germany)

SLU Authors

• Andrén, Olof

  • Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
    

• Kätterer, Thomas

  • Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
    

• Pettersson, Roger

  • Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
    

• Flink, Malin

  • Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
    

• Hansson, Lotta

  • Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Soil Science

Publication identifier

• DOI: https://doi.org/10.1007/BF00011286

Permanent link to this page (URI)

https://res.slu.se/id/publ/44541