African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 5863

Full Length Research Paper

Evaluation of different methods to control invasive alien grass weeds in a degraded area

Leonardo Palhares da Silveira
  • Leonardo Palhares da Silveira
  • Universidade Federal dos Vales do Jequitinhonha e Mucuri, Programa de Pós-Graduação em Ciência Florestal, Rodovia MGT 367 - Km 583, 5000, Alto da Jacuba, 39100-000, Diamantina, Minas Gerais, Brazil.
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Danielle Piuzana
  • Danielle Piuzana
  • Universidade Federal dos Vales do Jequitinhonha e Mucuri, Programa de Pós-Graduação em Ciência Florestal, Rodovia MGT 367 - Km 583, 5000, Alto da Jacuba, 39100-000, Diamantina, Minas Gerais, Brazil.
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Israel Marinho Pereira
  • Israel Marinho Pereira
  • Universidade Federal dos Vales do Jequitinhonha e Mucuri, Programa de Pós-Graduação em Ciência Florestal, Rodovia MGT 367 - Km 583, 5000, Alto da Jacuba, 39100-000, Diamantina, Minas Gerais, Brazil.
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Bruno Oliveira Lafeta
  • Bruno Oliveira Lafeta
  • Universidade Federal dos Vales do Jequitinhonha e Mucuri, Programa de Pós-Graduação em Ciência Florestal, Rodovia MGT 367 - Km 583, 5000, Alto da Jacuba, 39100-000, Diamantina, Minas Gerais, Brazil.
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Jose Barbosa dos Santos
  • Jose Barbosa dos Santos
  • Universidade Federal dos Vales do Jequitinhonha e Mucuri, Programa de Pós-Graduação em Ciência Florestal, Rodovia MGT 367 - Km 583, 5000, Alto da Jacuba, 39100-000, Diamantina, Minas Gerais, Brazil.
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  •  Received: 28 May 2018
  •  Accepted: 06 July 2018
  •  Published: 09 August 2018

Abstract

The objective of this study was to evaluate the efficiency of different methods of exotic grass control in a degraded area in the urban area of Diamantina, state of Minas Gerais, Brazil. The experiment was carried out in a randomized block design, with the following methods of control of invasive grasses: T1) manual; T2) mechanical; T3) chemical; and T4) chemical + mechanical. After one hundred days, regenerants of alien invasive species biomass were sampled for the quantification of fresh biomass and dry biomass.  The results found fresh biomass vary among the control methods, with higher values from mechanical control, followed by the combination of mechanical + chemical control. Chemical and manual methods had the lowest fresh biomass production, indicating that they were more effective in controlling the invasive grasses. The production of dry matter did not differ significantly among the methods of exotic grass control, on Tukey test, at 5% significance.

Key words: Urochloa decumbes,  Melinis minutiflora, biomass, restauration.