Inter-row hoeing for weed control in organic spring cereals-Influence of inter-row spacing and nitrogen rate

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dc.contributor.authorMelander, Bo
dc.contributor.authorJabran, Khawar
dc.contributor.authorDe Notaris, Chiara
dc.contributor.authorZnova, Liubava
dc.contributor.authorGreen, Ole
dc.contributor.authorOlesen, Jurgen E.
dc.date.accessioned2020-04-30T23:18:33Z
dc.date.available2020-04-30T23:18:33Z
dc.date.issued2018
dc.departmentDÜ, Ziraat Fakültesi, Bitki Koruma Bölümüen_US
dc.descriptionOlesen, Jorgen E/0000-0002-6639-1273; Jabran, Khawar/0000-0001-8512-3330; De Notaris, Chiara/0000-0002-3764-012X; Melander, Bo/0000-0002-5183-3278en_US
dc.descriptionWOS: 000452942600006en_US
dc.description.abstractInter-row hoeing has become increasingly important for weed control in organic spring cereals since the introduction of automatic steering systems. The technology requires a widening of current inter-row spacing for spring cereals in order to provide sufficient room for accurate operation of a hoe share between crop rows. However, there is considerable uncertainty about the optimal combination of inter-row hoeing, inter-row spacing and nitrogen (N) rate in terms of weeding effectiveness and crop yield. The aim of this study was to investigate the effect on weed and crop growth of the interaction between five inter-row spacings (125, 150, 200, 250, and 300 mm) and two N rates (50 and 100 kg NH4-N ha(-1)). Three field experiments were conducted in spring barley and two in spring wheat. One hoeing pass was applied for each inter-row spacing using a share width that worked 15-47 mm from the crop row. The immediate effect on weed numbers following hoeing was a 80-90% reduction in barley and a 63-80% reduction in wheat, but with no significant differences between spacings and N rates. However, the effect on weed biomass at crop anthesis was minor in barley because the crop itself substantially suppressed weed growth. Spring wheat was less competitive and inter-row hoeing reduced weed biomass by 60-70% compared to the standard 125 mm spacing without hoeing. The widening of inter-row spacing appeared not to reduce crop yield or grain quality. Prerequisites for successful inter-row hoeing in spring cereals include retained crop stands when increasing inter-row spacing and the avoidance of crop injuries from inaccurate steering.en_US
dc.description.sponsorshipMinistry of Environment and Food of Denmark; International Centre for Research in Organic Food Systemsen_US
dc.description.sponsorshipWe acknowledge the Ministry of Environment and Food of Denmark and the International Centre for Research in Organic Food Systems for funding this research, which was part of the RowCrop project under the Organic RDD2 programme. We would like to thank technicians Eugene Driessen and Karen Bjorn Heinager for their skilful technical assistance and Agrolntelli (www.agrointelli.com) for delivering the equipment for sowing and inter-row hoeing.en_US
dc.identifier.doi10.1016/j.eja.2018.08.005en_US
dc.identifier.endpage56en_US
dc.identifier.issn1161-0301
dc.identifier.issn1873-7331
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage49en_US
dc.identifier.urihttps://doi.org/10.1016/j.eja.2018.08.005
dc.identifier.urihttps://hdl.handle.net/20.500.12684/3398
dc.identifier.volume101en_US
dc.identifier.wosWOS:000452942600006en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofEuropean Journal Of Agronomyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSpring barleyen_US
dc.subjectSpring wheaten_US
dc.subjectMechanical weed controlen_US
dc.subjectProblematic weedsen_US
dc.subjectYielden_US
dc.subjectGrain qualityen_US
dc.titleInter-row hoeing for weed control in organic spring cereals-Influence of inter-row spacing and nitrogen rateen_US
dc.typeArticleen_US

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