Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/16263
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dc.contributor.authorElias, Natalie Ven
dc.contributor.authorHerridge, Daviden
dc.date.accessioned2014-12-16T09:13:00Z-
dc.date.issued2014-
dc.identifier.citationCrop and Pasture Science, 65(5), p. 442-452en
dc.identifier.issn1836-5795en
dc.identifier.issn1836-0947en
dc.identifier.urihttps://hdl.handle.net/1959.11/16263-
dc.description.abstractChickpea ('Cicer arietinum' L.) is considered an effective rotation crop in Australia's northern grains region; however, concerns exist that grain yields of commercial crops are reduced because of nitrogen (N) deficiency related to inadequate nodulation and N₂ fixation. As part of a program to address these issues, we report on the monitoring of 22 commercial fields around Moree, northern NSW, during 2005-07 that were designated for chickpea, and an associated farmer survey (81 respondents). Our objectives were to determine whether the monitored crops were limited by N and to develop recommendations that would optimise productivity for farmers growing chickpeas. In 2005, only soil water and nitrate data were collected from the six fields designated for chickpea. In 2006 and 2007, almost complete datasets were assembled from the 16 chickpea fields or crops, including soil water and nitrate at sowing, row spacing, plant density, plant height, stubble cover, weed density and composition, shoot biomass, grain yield, nodulation and N₂ fixation (%N derived from the atmosphere (%Ndfa) and total crop N fixed). The associated survey provided insights into farmer knowledge of, and practices related to, inoculation. Field monitoring indicated moderate-high levels of soil nitrate at sowing (averages 114, 126 and 110 kg N ha⁻¹ to 1.2 m depth for 2005, 2006 and 2007, respectively) and generally low plant nodulation (0.11-1.16 g fresh wt plant⁻¹) and N₂ fixation (0-62%Ndfa and 0-87 kg N ha⁻¹). Grain yield varied between 0.53 and 2.91 t ha⁻¹ across the 14 monitored crops, with averages of 1.89 t ha⁻¹ in 2006 and 1.02 t ha⁻¹ in 2007. Although total crop N and grain yields were highly correlated with total (i.e. soil + fixed) N supply, there was no evidence that the monitored chickpea crops were N-limited. Rather, we conclude that soil N and biologically fixed N were complementary in supplying N to the crops, the grain yields of which were primarily determined by the supply of plant-available water (PAW) and water-use efficiency (WUE). Simple and multivariate regression analyses showed that stubble cover during the fallow (positively correlated with sowing PAW) and sowing date (positively correlated with crop WUE) were significant determinants of grain yield. We conclude that farmers could improve inoculation practice by ensuring the time between seed inoculation and sowing is always <24 h.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofCrop and Pasture Scienceen
dc.titleCrop-available water and agronomic management, rather than nitrogen supply, primarily determine grain yield of commercial chickpea in northern New South Walesen
dc.typeJournal Articleen
dc.identifier.doi10.1071/CP13397en
dc.subject.keywordsSoil Biologyen
dc.subject.keywordsCrop and Pasture Nutritionen
dc.subject.keywordsAgronomyen
local.contributor.firstnameNatalie Ven
local.contributor.firstnameDaviden
local.subject.for2008050303 Soil Biologyen
local.subject.for2008070306 Crop and Pasture Nutritionen
local.subject.for2008070302 Agronomyen
local.subject.seo2008829899 Environmentally Sustainable Plant Production not elsewhere classifieden
local.subject.seo2008820503 Grain Legumesen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailnelias@dow.comen
local.profile.emaildherridg@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20141205-142042en
local.publisher.placeAustraliaen
local.format.startpage442en
local.format.endpage452en
local.identifier.scopusid84902531385en
local.peerreviewedYesen
local.identifier.volume65en
local.identifier.issue5en
local.contributor.lastnameEliasen
local.contributor.lastnameHerridgeen
dc.identifier.staffune-id:dherridgen
local.profile.orcid0000-0002-0423-2517en
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:16500en
local.identifier.handlehttps://hdl.handle.net/1959.11/16263en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleCrop-available water and agronomic management, rather than nitrogen supply, primarily determine grain yield of commercial chickpea in northern New South Walesen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorElias, Natalie Ven
local.search.authorHerridge, Daviden
local.uneassociationUnknownen
local.year.published2014en
local.subject.for2020410603 Soil biologyen
local.subject.for2020300407 Crop and pasture nutritionen
local.subject.for2020300403 Agronomyen
local.subject.seo2020260303 Grain legumesen
Appears in Collections:Journal Article
School of Environmental and Rural Science
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