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A 3-year field study to assess winter cover crops as nitrogen sources for an organic maize crop in Mediterranean Portugal

2021-04-21Journal article Open access
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dc.contributor.authorPerdigão, Adelaide
dc.contributor.authorPereira, José L.S.
dc.contributor.authorMoreira, Nuno
dc.contributor.authorTrindade, Henrique
dc.contributor.authorCoutinho, João
dc.date.accessioned2022-01-13T13:53:39Z
dc.date.available2022-01-13T13:53:39Z
dc.date.issued2021-04-21
dc.description.abstractCurrent environmental concerns, the rising economic and environmental costs of mineral fertilizers and the need to respond to the limitations of N fertilization in organic farming motivate the search for alternative sources of N in maize cropping. Forage legumes used as winter cover crops may improve soil N fertility and offer benefits to the environment. The aim of this study was to examine the effects, in a factorial field experiment, of two sowing dates (SD) and nine different cover crop treatments (balansa clover, crimson clover, gland clover, arrowleaf clover, French serradella, yellow lupin, Italian ryegrass, a cover mixture and a weedy fallow) as a potential alternative N source in an organically managed maize crop. The experiment was conducted at Viseu (Portugal) for three years (2007/2008, 2008/2009 and 2011/12), in the same field. Results showed that maize grain yield was not influenced by cover crop species but was affected by SD and the higher dry matter (DM) aboveground biomass production was observed in early SD (6.1 t ha􀀀 1). The cover crops revealed their importance in maize N uptake: yellow lupin of earlier SD had the highest N uptake (83.6 kg N ha􀀀 1), but this was not significantly different from balansa clover (83.2 kg N ha􀀀 1). Ryegrass was the most efficient in depleting soil mineral N but values were just significantly lower than yellow lupin. Lupin was the least efficient, leaving more mineral N in the soil than the others cover crops, immediately before the period when the risk of leaching is high. It was concluded that, under the edaphoclimatic conditions tested, most of the tested cover crops were efficient in supplying N to maize, and balansa clover had the best performance.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAdelaide Perdigão, José L.S. Pereira, Nuno Moreira, Henrique Trindade, João Coutinho, A 3-year field study to assess winter cover crops as nitrogen sources for an organic maize crop in Mediterranean Portugal, European Journal of Agronomy, Volume 128, 2021, 126302,pt_PT
dc.identifier.doidoi.org/10.1016/j.eja.2021.126302pt_PT
dc.identifier.issn1161-0301
dc.identifier.urihttp://hdl.handle.net/10400.19/6999
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherEuropean Journal of Agronomypt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S1161030121000745pt_PT
dc.subjectBalansa cloverpt_PT
dc.subjectMaize yieldpt_PT
dc.subjectYellow lupinpt_PT
dc.subjectSowing datept_PT
dc.subjectGreen manurespt_PT
dc.titleA 3-year field study to assess winter cover crops as nitrogen sources for an organic maize crop in Mediterranean Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage126302pt_PT
oaire.citation.titleEuropean Journal of Agronomypt_PT
oaire.citation.volume128pt_PT
person.familyNamePerdigão
person.familyNamePereira
person.familyNameTrindade
person.familyNameCOUTINHO MENDES
person.givenNameAdelaide
person.givenNameJosé Luís da Silva
person.givenNameHenrique
person.givenNameJOÃO FILIPE
person.identifier444832
person.identifier427727
person.identifier.ciencia-id5214-3B71-2F01
person.identifier.ciencia-id6D17-2407-9EA8
person.identifier.ciencia-id2312-F9CE-CA44
person.identifier.ciencia-id831A-E915-F40F
person.identifier.orcid0000-0001-6080-7760
person.identifier.orcid0000-0001-8078-8915
person.identifier.orcid0000-0001-8208-6204
person.identifier.orcid0000-0002-6303-9549
person.identifier.ridE-4375-2012
person.identifier.ridA-5693-2013
person.identifier.scopus-author-id7401895587
person.identifier.scopus-author-id6603625433
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationf6530c4c-7176-4ba1-b46d-5e54d022eb6a
relation.isAuthorOfPublication416d26d1-ae09-4dd0-8607-e8430c1e5a53
relation.isAuthorOfPublicationc37b552b-8809-4107-894a-b4ae1ada7ed1
relation.isAuthorOfPublication.latestForDiscoveryc37b552b-8809-4107-894a-b4ae1ada7ed1

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