Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil.

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dc.contributorITALO KAYE PINTO DE FARIA, ESALQ; JOSE LUIS VILELA VIEIRA, ESALQ; SARAH TENELLI, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; LEONARDO JOSE MOTTA CAMPOS, CNPSO; RODRIGO VERAS DA COSTA, CNPMS; EDUARDO ZAVASCHI, ESALQ; RISELY FERRAZ DE ALMEIDA, ESALQ; LEANDRO DE MELLO E SILVA CARNEIRO, UNIVERSIDADE FEDERAL DE UBERLÂNDIA; RAFAEL OTTO, ESALQ.
dc.creatorFARIA, I. K. P. de
dc.creatorVIEIRA, J. L. V.
dc.creatorTENELLI, S.
dc.creatorALMEIDA, R. E. M. de
dc.creatorCAMPOS, L. J. M.
dc.creatorCOSTA, R. V. da
dc.creatorZAVASCHI, E.
dc.creatorALMEIDA, R. F. de
dc.creatorCARNEIRO, L. de M. e S.
dc.creatorOTTO, R.
dc.date2019-05-31T00:37:46Z
dc.date2019-05-31T00:37:46Z
dc.date2019-05-30
dc.date2019
dc.date2019-10-04T11:11:11Z
dc.date.accessioned2026-07-07T11:56:45Z
dc.descriptionIntegrating plant density and nitrogen (N) management is a strategy for improving corn yields, especially for off-season corn production in the tropics. This study tested the hypothesis that increasing plant densities and N rates promotes yield gains for off-season corn production in high-yielding environments. The aim of the study was to investigate the yield performances of two hybrid versions (DKB PRO and DKB PRO3) submitted to three plant densities (55,000; 65,000 and 75,000 plants ha−1) and four N rates (control, 60, 120 and 180 kg ha−1 N). Field trials were undertaken at Uberlândia-MG (site1 and 2) and Pedro Afonso-TO (site 3), Brazil from which data on corn yield parameters were collected and analyzed. Multivariate analysis separated the three trial areas into two groups, presenting high (sites 1 and 2) and low yields (site 3), which were related to weather conditions. There was no influence of a hybrid version or plant densities on crop yields at site 1 or 2. In contrast, there was a positive response to increasing plant densities and the use of DKB PRO3 at site 3. A significant response to N was observed at sites 2 and 3, following a plateau model. Our results suggest that N application rates and plant densities do have the potential to increase off-season corn yields in low yielding environments.
dc.identifierScientia Agricola, v. 76, n. 4, p. 344-352, jul./ago. 2019.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1109502
dc.identifier10.1590/1678-992X-2017-0295
dc.identifier.urihttp://hdl.handle.net/123456789/518502
dc.languageeng
dc.rightsopenAccess
dc.subjectMilho
dc.subjectZea Mays
dc.subjectPopulação de Planta
dc.subjectDensidade de Plantio
dc.subjectMilho Hibrido
dc.subjectCorn
dc.subjectHybrids
dc.subjectPopulation density
dc.titleOptimal plant density and nitrogen rates for improving off-season corn yields in Brazil.
dc.typeArtigo de periódico

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