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Sökning: id:"swepub:oai:DiVA.org:hig-25408" > Ecosystem C and N d...

  • Eckersten, HenrikSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtproduktionsekologi,Department of Crop Production Ecology,Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden (författare)

Ecosystem C and N dynamics affected by a modified spring barley trait with increased nitrogen use - a simulation case study

  • Artikel/kapitelEngelska2018

Förlag, utgivningsår, omfång ...

  • 2017-10-09
  • Taylor & Francis,2018
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:hig-25408
  • https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-25408URI
  • https://doi.org/10.1080/09064710.2017.1385835DOI
  • https://res.slu.se/id/publ/94663URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Mistra Biotech research programme (Biotechnology for Sustainable and Competitive Agriculture and Food Systems) - Mistra (the Swedish Foundation for Strategic Environmental Research)
  • To what extent might a crop with increased plant N uptake efficiency and/or N demand increase plant biomass and soil carbon storage, decrease N leaching, and reduce the need for N fertilisation? This was assessed for a fertilised sandy loam site in central Sweden cultivated with spring barley for a four year period using a process based crop and soil simulation model (SOILN) calibrated to fit observations of field experiments with non-modified crops. Crop properties were changed in accordance with previous model applications to other crops with higher N uptake and utilisation efficiencies, to resemble potential effects of breeding. For the modified crops a doubling of daily uptake efficiency of soil mineral N and/or increase of radiation use efficiency by 30%, increased plant biomass by 3%-30%, decreased N leaching by 1%-30% and increased soil organic carbon (SOC) content by 1-12 g C m-2 year-1. The larger changes were mainly due to increased uptake efficiency. Fertilisation of the modified spring barley crop could be reduced while still producing the same plant biomass as the non-modified crop. The plant biomass to N leaching ratio of the modified crops increased. The simulated changes in plant biomass and SOC were sensitive to weather conditions suggesting that in situ experiments would need to cover a large range of weather conditions to evaluate the performance of new crop traits under climatic variability. The study suggests a strong need that field experiments are accompanied with model applications, when exploring the potential of the modified crops under variable conditions.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Marstorp, HåkanSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment,Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden(Swepub:slu)50166 (författare)
  • Collentine, DennisSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Högskolan i Gävle,Nationalekonomi,Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden,Institutionen för mark och miljö,University of Gävle(Swepub:slu)48678 (författare)
  • Johnsson, HolgerSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment,Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden(Swepub:slu)50770 (författare)
  • Kätterer, ThomasSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology,Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden(Swepub:slu)48437 (författare)
  • Sveriges lantbruksuniversitetInstitutionen för växtproduktionsekologi (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Sammanhörande titlar

  • Ingår i:Acta Agriculturae Scandinavica - Section B: Taylor & Francis68:3, s. 230-2420906-47101651-1913

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