Mostrar el registro sencillo del ítem
dc.contributor.author
Maltese, Nicolás Elías
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Melchiori, Ricardo J M
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Maddonni, Gustavo Angel
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Ferreyra, J.M.
dc.contributor.author
Caviglia, Octavio Pedro
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.date.available
2020-11-12T12:57:38Z
dc.date.issued
2019-02
dc.identifier.citation
Maltese, Nicolás Elías; Melchiori, Ricardo J M; Maddonni, Gustavo Angel; Ferreyra, J.M.; Caviglia, Octavio Pedro; Nitrogen economy of early and late-sown maize crops; Elsevier Science; Field Crops Research; 231; 2-2019; 40-50
dc.identifier.issn
0378-4290
dc.identifier.uri
http://hdl.handle.net/11336/118242
dc.description.abstract
Late sowing dates of maize are widely adopted in the Pampas region of Argentina, stabilising grain yields due to a more favourable water balance around flowering. However, late-sown crops are exposed to high soil N availabilities (Nav), high temperatures during the pre-flowering period and declining photo-thermal conditions during grain filling, which may affect nitrogen use efficiency (NUE, kg of grain per kg of Nav). These effects could be exerted through nitrogen uptake efficiency (NupE, kg of N uptake per kg of Nav) and/or nitrogen utilisation efficiency (NutE, kg of grain per kg of N uptake). Environmental conditions could affect i) pre (Nuptpre) and/or post-flowering N uptake (Nuptpost) and, consequently, NupE and ii) the determinants of NutE, such as N harvest index (NHI) and N source per grain. Early- and late-sown maize were cropped in order to analyse i) grain yield, Nav and NUE and ii) relationships among NUE and related-N efficiencies. The experiments were carried out in Paraná (31°48′ S 60°32′ W), Argentina, during 2014–2015 and 2015–2016. Treatments were combinations of two sowing dates (early and late), three N rates (0, 90, and 270 kg N ha−1) and two genotypes (DK 70-10 VT3P and DK 73-10 VT3P). NUE decreased in late-sown crops (ca. 32 to 26 kg grain kg Nav −1), mediated by lower grain yields (ca. 8564 kg ha−1 and 7832 kg ha−1 in early- and late-sown crops, respectively) and higher Nav (ca. 267–312 kg Nav ha−1). DK 73-10 VT3P exhibited the highest NUE (ca. 31 kg grain kg Nav −1) and NutE (ca. 63 kg grain kg Nupt −1). N rate affected more strongly Nav than grain yield; and there was a greater association between NUE and NupE (P < 0.0001, R2 = 0.72) relative to NutE (P < 0.01, R2 = 0.65). In both sowing dates, Nuptpre had a positive impact on NupE, which strongly declined with N rate especially in late-sown crops. The lower NutE of late-sown crops (66 vs. 52 kg grain kg Nupt −1 in early and late sowing dates, respectively) was related to the highest post-flowering N source per grain (2.5 vs. 3.5 mg N grain−1). Thus, our study highlights the components of N economy of late-sown crops with the highest impact on NUE, i.e., Nuptpre and NutE. Therefore, nutritional management of late-sown maize crops should be focused on these NUE components. High plant densities could be useful to increase Nuptpre. Finally, the choice of a genotype with high NutE appears as a valid strategy to mitigate NUE reductions, promoted by the high Nav typical of late sowing dates.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MAIZE
dc.subject
NITROGEN UPTAKE EFFICIENCY
dc.subject
NITROGEN USE EFFICIENCY
dc.subject
NITROGEN UTILISATION EFFICIENCY
dc.subject
SOWING DATE
dc.subject.classification
Agricultura
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Agricultura, Silvicultura y Pesca
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS AGRÍCOLAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Nitrogen economy of early and late-sown maize crops
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-11T15:51:46Z
dc.journal.volume
231
dc.journal.pagination
40-50
dc.journal.pais
Países Bajos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Maltese, Nicolás Elías. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Entre Ríos. Estación Experimental Agropecuaria Paraná; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Melchiori, Ricardo J M. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Entre Ríos. Estación Experimental Agropecuaria Paraná; Argentina
dc.description.fil
Fil: Maddonni, Gustavo Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.description.fil
Fil: Ferreyra, J.M.. No especifíca;
dc.description.fil
Fil: Caviglia, Octavio Pedro. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Field Crops Research
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0378429018309560
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.fcr.2018.11.007
Archivos asociados