African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6901

Full Length Research Paper

Cinnamon and citronella essential oils in the in vitro control of the fungi Aspergillus sp. and Sclerotinia sclerotiorum

Simone de Paiva Caetano Bucker Moraes
  • Simone de Paiva Caetano Bucker Moraes
  • Graduate Program in Plant Production, Center for Agrarian Science and Engineering of the Federal University of Espírito Santo, 29500-000, Alegre, ES, Brazil.
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Willian Bucker Moraes
  • Willian Bucker Moraes
  • Department of Agronomy, Center for Agrarian Science and Engineering of the Federal University of Espírito Santo, 29500-000, Alegre, ES, Brazil.
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Wanderson Bucker Moraes
  • Wanderson Bucker Moraes
  • Department of Plant Pathology, The Ohio State University, 1680 Madison Ave., Wooster, OH 44691,USA.
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Guilherme de Resende Camara
  • Guilherme de Resende Camara
  • Graduate Program in Plant Production, Center for Agrarian Science and Engineering of the Federal University of Espírito Santo, 29500-000, Alegre, ES, Brazil.
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Khétrin Silva Maciel
  • Khétrin Silva Maciel
  • Center for Training in Agroforestry Sciences and Technologies, Universidade Federal do Sul da Bahia, 45613-204 - Itabuna, BA, Brazil.
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Paula Aparecida Muniz de Lima
  • Paula Aparecida Muniz de Lima
  • Graduate Program in Plant Production, Center for Agrarian Science and Engineering of the Federal University of Espírito Santo, 29500-000, Alegre, ES, Brazil.
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Adesio Ferreira
  • Adesio Ferreira
  • Department of Agronomy, Center for Agrarian Science and Engineering of the Federal University of Espírito Santo, 29500-000, Alegre, ES, Brazil.
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Rodrigo Sobreira Alexandre
  • Rodrigo Sobreira Alexandre
  • Department of Forest and Wood Engineering, Federal University of Espírito Santo, 29550-000, Jerônimo Monteiro, ES, Brazil
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Jose Carlos Lopes
  • Jose Carlos Lopes
  • Department of Agronomy, Center for Agrarian Science and Engineering of the Federal University of Espírito Santo, 29500-000, Alegre, ES, Brazil.
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  •  Received: 22 February 2018
  •  Accepted: 24 April 2018
  •  Published: 30 August 2018

Abstract

Among the fungi that cause damage and/or are spread by seeds, Aspergillus sp. and Sclerotinia sclerotiorum stand out, which have a worldwide distribution and a wide range of hosts. A viable and safer option than chemicals would be to use natural compounds for plant disease management. The objective of this study was to evaluate cinnamon (Cinnamomum cassia) and citronella (Cymbopogon winterianus) essential oils in the in vitro control of fungi Aspergilus sp. and S. sclerotiorum. The experimental design was completely randomized in a 2x4 + 2 factorial scheme [essential oils x concentrations + (fungicide + standard control)]. Cinnamon and citronella essential oils were used in doses of 0.2, 0.4, 0.8 and 1.6 mL L-1 (+Tween 80 to 1%) and the Captana (480 g L-1) and thiophanate-methyl + chlorothalonil (200.0 g kg -1 + 500.0 g kg- 1) fungicides, at doses of 3 g L-1 and 2 g L-1, for the fungi Aspergilus sp. and S. sclerotiorum, respectively. The products were diluted in potato dextrose agar (PDA) medium in Petri dishes, and mycelium discs with 5 mm diameter were placed and incubated in a Biochemical Oxygen Demand (BOD) incubator at 25 ± 1°C and photoperiod of 12 h. There was significant interaction between treatments. The dose of 1.6 mL L-1 of both oils showed greater inhibition of the mycelial growth of fungi Aspergilus sp. and S. sclerotiorum, and the greater inhibition of sporulation of the fungus Aspergilus sp. It is concluded that cinnamon and citronella essential oils control the fungi Aspergilus sp. and S. sclerotiorum.

Key words: Alternative control, pathogens, Cymbopogon winterianus, Cinnamomum cassia, seed pathology.

 

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