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dc.creatorPimentel, Guilherme V.-
dc.creatorMoreira, Silvino G.-
dc.creatorÁvila, Mateus O. T. de-
dc.creatorCarvalho, Antonio Henrique F. de-
dc.creatorSilva, Alessandro A. P. da-
dc.creatorResende, Hugo C. de-
dc.date.accessioned2020-04-22T16:48:34Z-
dc.date.available2020-04-22T16:48:34Z-
dc.identifier.citationPIMENTEL, G. V. et al. Interactions between herbicide application and timing of nitrogen fertilization in maize hybrids. Journal of Agricultural Science, [S.l.], v. 11, n. 9, 2019.pt_BR
dc.identifier.urihttp://www.ccsenet.org/journal/index.php/jas/article/view/0/39720pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/40233-
dc.description.abstractMaize hybrids have different levels of tolerance to the herbicide nicosulfuron, depending on the dose, the environment, the phenological stage of the plant and the timing of nitrogen fertilization, and phytotoxic effects can occur without proper management. There is also limited information on the selectivity of current genetically modified hybrids for other recommended herbicides, such as tembotrione. Thus, the objective of this study was to evaluate the effects of herbicides (tembotrione and nicosulfuron) and the timing of nitrogen fertilization on the yield of maize hybrids. The experimental design was a randomized block design, in a 4 × 2 factorial arrangement, with 4 replicates. The treatments consisted of four treatments [weeding; nicosulfuron + atrazine (20 and 32 + 1250 g ha-1 ai) and tembotrione + atrazine (75.6 + 1250 g ha-1 ai)] and two nitrogen fertilization times (0 and 7 days after application). Maize hybrids P30F53 Leptra, DKB 230PRO3 and KWS 9004PRO2 were assessed in two growing seasons (1st and 2nd harvest) during the 2016/2017 growing season. The percentages of weed control; phytotoxicity at 7, 14 and 21 days after application (DAA); plant height; number of rows per ear; and yield at harvest were evaluated. All herbicides were more effective in controlling weeds at the 1st harvest because of favourable climatic conditions. Nitrogen fertilization can be carried out on the same day as the application of the herbicides nicosulfuron and tembotrione with no reduction in yield for the hybrids P30F53 Leptra, DKB 230PRO3 and KWS 9004PRO2.pt_BR
dc.languageen_USpt_BR
dc.rightsacesso abertopt_BR
dc.sourceJournal of Agricultural Sciencept_BR
dc.titleInteractions between herbicide application and timing of nitrogen fertilization in maize hybridspt_BR
dc.typeArtigopt_BR
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