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  • Eckersten, HenrikSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtproduktionsekologi,Department of Crop Production Ecology (author)

Nitrogen leaching and soil organic carbon sequestration of a Barley crop with improved N use efficiency : A regional case study

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-05-17
  • Taylor and Francis Ltd.2017
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:ri-29766
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-29766URI
  • https://doi.org/10.1080/09064710.2017.1324041DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-24269URI
  • https://res.slu.se/id/publ/90238URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • The potential of modified spring barley crops with improved nitrogen (N) use efficiency to reduce nitrogen (N) leaching and to increase soil organic carbon (SOC) storage was assessed at the regional scale. This was done using simulation model applications designed for reporting according to the Helcom (Helsinki Commission) and Kyoto protocols. Using model simulations based on modified crops N dynamics and SOC were assessed for three agro-ecological regions (latitudes ranging 55°20′–60°40′ N) in Sweden over a 20-year period. The modified N use properties of spring barley were implemented in the SOILNDB model (simulating soil C, N, water and heat, and plant N dynamics) by changing the parameters for root N uptake efficiency and plant N demand within a range given by previous model applications to different crops. A doubling of the daily N uptake efficiency and increased N demand (by ca 30%) reduced N leaching by 24%–31%, increased plant N content by 9%–12%, depending on region. The effects of the modified crop on SOC was simulated with the ICBM model, resulting in an increased SOC content (0–25 cm depth) by 57–79 kg C ha−1 y−1. The results suggest that a modified crop might reduce N leaching from spring barley area, in a range similar to the targets of relevant environmental protection directives, a result which held more in the northern than southern regions. The simulated SOC increase on a hectare basis was highest for the central region and least for the most northern region. For the total agricultural area the share of spring barley area was small and more crops would need to be modified to reach the emission reduction targets.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Bolinder, MartinSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology(Swepub:slu)50140 (author)
  • Johnsson, HolgerSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment(Swepub:slu)50770 (author)
  • Kätterer, ThomasSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology(Swepub:slu)48437 (author)
  • Mårtensson, KristinaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment(Swepub:slu)50227 (author)
  • 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 (author)
  • Tidåker, PernillaRISE,Jordbruk och livsmedel,Swedish Institute of Agricultural and Environmental Engineering, Research Institutes of Sweden (RISE), Uppsala, Sweden,Swedish Institute of Agricultural and Environmental Engineering (JTI)(Swepub:slu)49464 (author)
  • Marstorp, HåkanSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment(Swepub:slu)50166 (author)
  • Sveriges lantbruksuniversitetInstitutionen för växtproduktionsekologi (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Related titles

  • In:Acta Agriculturae Scandinavica - Section B: Taylor and Francis Ltd.67:7, s. 615-6270906-47101651-1913

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