Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/20172
Full metadata record
DC FieldValueLanguage
dc.contributor.authorHerridge, Daviden
dc.contributor.authorBrock, Philippa Men
dc.date.accessioned2017-03-13T17:48:00Z-
dc.date.issued2016-
dc.identifier.citationProceedings of the 2016 International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world", p. 1-4en
dc.identifier.urihttps://hdl.handle.net/1959.11/20172-
dc.description.abstractA large uncertainty in constructing grain cropping Life Cycle Assessments (LCAs) is the effect of a particular crop, or sequence of crops, on soil C stocks. We propose that the C cost of legume N₂ fixation, estimated to be ca. 20 kg CO₂/kg N fixed, will be expressed as reduced residue C returned to the soil and a possible net loss of soil C. Published pre-farm + on-farm greenhouse gas (GHG) emissions associated with N-fertilised wheat (60N) and canola (100N) and N₂-fixing field pea, grown in Australia's southern grains region, were combined with modelled effects of the same crops on soil C stocks. When effects of the crops on soil C were assumed to be neutral, canola had the highest emissions at 840 kg CO₂-e/ha with field pea the lowest (530 kg CO₂-e/ha). When estimated changes in soil C were included in the LCAs, canola's GHG emission were totally offset (-100 kg CO₂-e/ha), compared with a more than doubling of emissions for field pea to 1270 kg CO₂-e/ha. This is somewhat counter-intuitive to current thinking that the substitution of fertiliser N with legume fixed N is an effective strategy for GHG emissions mitigation and highlights the need for simple, accurate methodologies for determining net changes in soil C for individual crops.en
dc.languageenen
dc.publisherInternational Nitrogen Initiativeen
dc.relation.ispartofProceedings of the 2016 International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world"en
dc.titleAnnual crop legumes may not mitigate greenhouse gas emissions because of the high carbon cost of nitrogen fixationen
dc.typeConference Publicationen
dc.relation.conferenceINI 2016: 7th International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world"en
dc.subject.keywordsAgronomyen
dc.subject.keywordsEnvironmental Impact Assessmenten
local.contributor.firstnameDaviden
local.contributor.firstnamePhilippa Men
local.subject.for2008070302 Agronomyen
local.subject.for2008050204 Environmental Impact Assessmenten
local.subject.seo2008960504 Ecosystem Assessment and Management of Farmland, Arable Cropland and Permanent Cropland Environmentsen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emaildherridg@une.edu.auen
local.profile.emailpip.brock@dpi.nsw.gov.auen
local.output.categoryE1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20161210-100829en
local.date.conference4th - 8th December, 2016en
local.conference.placeMelbourne, Australiaen
local.publisher.placeonlineen
local.format.startpage1en
local.format.endpage4en
local.peerreviewedYesen
local.contributor.lastnameHerridgeen
local.contributor.lastnameBrocken
dc.identifier.staffune-id:dherridgen
local.profile.orcid0000-0002-0423-2517en
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:20370en
dc.identifier.academiclevelAcademicen
local.title.maintitleAnnual crop legumes may not mitigate greenhouse gas emissions because of the high carbon cost of nitrogen fixationen
local.output.categorydescriptionE1 Refereed Scholarly Conference Publicationen
local.relation.urlhttp://www.ini2016.com/pdf-papers/INI2016_Herridge_David.pdfen
local.conference.detailsINI 2016: 7th International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world", Melbourne, Australia, 4th - 8th December, 2016en
local.search.authorHerridge, Daviden
local.search.authorBrock, Philippa Men
local.uneassociationUnknownen
local.year.published2016en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/7586528f-464b-4462-b51c-1f9f14b3dfbaen
local.subject.for2020300403 Agronomyen
local.subject.for2020410402 Environmental assessment and monitoringen
local.subject.seo2020180601 Assessment and management of terrestrial ecosystemsen
local.date.start2016-12-04-
local.date.end2016-12-08-
Appears in Collections:Conference Publication
School of Environmental and Rural Science
Files in This Item:
3 files
File Description SizeFormat 
Show simple item record

Page view(s)

1,528
checked on May 19, 2024
Google Media

Google ScholarTM

Check


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.