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dc.contributor.authorLOPES, M. N.pt_BR
dc.contributor.authorPOMPEU, R. C. F. F.pt_BR
dc.contributor.authorCÂNDIDO, M. J. D.pt_BR
dc.contributor.authorLACERDA, C. F. dept_BR
dc.contributor.authorSILVA, R. G. dapt_BR
dc.contributor.authorFERNANDES, F. R. B.pt_BR
dc.date.accessioned2011-12-13T11:11:11Zpt_BR
dc.date.accessioned2011-12-13T11:11:11Zpt_BR
dc.date.available2011-12-13T11:11:11Zpt_BR
dc.date.available2011-12-13T11:11:11Zpt_BR
dc.date.created2011-12-13pt_BR
dc.date.issued2011pt_BR
dc.identifier.citationRevista Brasileira de Zootecnia, v. 40, n. 12, p. 2666-2672, 2011.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/909454pt_BR
dc.descriptionAbstract: This study aimed to evaluate the growth index of massai grass during two regrowth cycles in a greenhouse under five levels of nitrogen (0, 150, 300, 450 and 600 mg N/dm3 of soil) and eight growth ages (5, 8, 11, 14, 17, 20, 23 and 26 days) in a split-plot design with five replications. The following variables were evaluated: net assimilation rate, herbage growth rate, relative growth rate, leaf area ratio, leaf weight ratio and specific leaf area. The effect of nitrogen was detected on the variables net assimilation rate (regrowths 1 and 2), leaf area ratio (regrowth 1), leaf weight ratio (regrowths 1 and 2), specific leaf area (regrowths 1 and 2) and herbage growth rate (regrowths 1 and 2). The growth ages influenced the relative growth rate (regrowth 2) and the net assimilation rate (regrowth 2). The net assimilation rate presented linear effect, estimated in 0.70 and 2.86 g/m2 leaf.day-1 for the 0 and 600 mg N/dm3 soil, respectively (regrowth 1). For each milligram of N/dm3 added, the leaf area ratio was reduced in 0.0000258 m2 leaf/g plant (regrowth 1). The herbage growth rate was estimated in 1.38 and 37.02 g/m2.day-1 (regrowth 1), and 4.37 and 32.20 g/m2.day-1 (regrowth 2) for the 0 and 600 mg N/dm3 soil, respectively. The massai grass? growth is favored by nitrogen fertilization, and little do the growth ages affect the growth index of the plants.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectxpt_BR
dc.titleGrowth index in massai grass under different levels of nitrogen fertilization.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2019-09-23T11:11:11Zpt_BR
riaa.ainfo.id909454pt_BR
riaa.ainfo.lastupdate2019-09-23 -03:00:00pt_BR
dc.identifier.doihttp://dx.doi.org/10.1590/S1516-35982011001200008pt_BR
dc.contributor.institutionMarcos Neves Lopes, Universidade Federal do Ceará - UFC, Fortaleza, CE; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; Magno José Duarte Cândido, UFC; Claudivan Feitosa de Lacerda, UFC; Rodrigo Gregório da Silva, Instituto Federal de Educação, Ciência e Tecnologia - IFCE, Campus Avançado do Tauá.; Francisco Ronaldo Belem Fernandes, UFC.pt_BR
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