Alternative control of Corynespora cassiicola in papaya seedlings and fruits by Cinnamomum zeylanicum essential oil

Pedro Ivo Menezes Bitu; Leandro Victor Silva dos Santos; Antonia Alice Costa Rodrigues; Heder Braun; Odair dos Santos Monteiro; Altamiro Souza de Lima Ferraz Junior; Maria Rosangela Malheiro Silva

doi:10.5897/AJAR2015.10754

African Journal of
Agricultural Research

Abbreviation: Afr. J. Agric. Res.
Language: English
ISSN: 1991-637X
DOI: 10.5897/AJAR
Start Year: 2006
Published Articles: 6860

Full Length Research Paper

Alternative control of Corynespora cassiicola in papaya seedlings and fruits by Cinnamomum zeylanicum essential oil

Pedro Ivo Menezes Bitu

Pedro Ivo Menezes Bitu
State University of MaranhÃ£o, Post-Graduation Program of Agroecology, MaranhÃ£o State, Brazil.
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Leandro Victor Silva dos Santos

Leandro Victor Silva dos Santos
State University of MaranhÃ£o, Post-Graduation Program of Agroecology, MaranhÃ£o State, Brazil.
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Antonia Alice Costa Rodrigues

Antonia Alice Costa Rodrigues
State University of MaranhÃ£o, Post-Graduation Program of Agroecology, MaranhÃ£o State, Brazil.
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Heder Braun

Heder Braun
State University of MaranhÃ£o, Post-Graduation Program of Agroecology, MaranhÃ£o State, Brazil.
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Odair dos Santos Monteiro

Odair dos Santos Monteiro
Federal University of MaranhÃ£o, SÃ£o LuÃs, MaranhÃ£o State, Brazil.
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Altamiro Souza de Lima Ferraz Junior

Altamiro Souza de Lima Ferraz Junior
State University of MaranhÃ£o, Post-Graduation Program of Agroecology, MaranhÃ£o State, Brazil.
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Maria Rosangela Malheiro Silva

Maria Rosangela Malheiro Silva
State University of MaranhÃ£o, Post-Graduation Program of Agroecology, MaranhÃ£o State, Brazil.
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Article Number - C8AF57F58582
Vol.11(20), pp. 1862-1871 , May 2016
https://doi.org/10.5897/AJAR2015.10754

Received: 21 December 2015
Accepted: 17 March 2016
Published: 19 May 2016

Abstract

The study aimed to evaluate the efficiency of essential oil concentrations on Cinnamomum zeylanicum leaves as a possible fungicide against mycelial growth, and the sporulation of Corynespora cassiicola in papaya seedling and fruit. The study performed three experiments, namely comparison of the anti-C. cassiicola activity of: 1 µL mL^-1C. zeylanicum essential oil, commercial fungicide, and control-treatment; comparison of the anti-C. cassiicola activity of five essential oil concentrations (0.0, 0.5, 1.0, 2.0, and 4.0 µL mL^-1) and a commercial fungicide (150 g ha^-1 i.a.); and the effect of applying essential oil concentrations (0.0, 0.5, 1.0, 2.0 and 4.0 µL mL^-1) before and after the application of mycelium disk fungus. It was found that the essential oil from C. zeylanicum inhibits mycelial growth and sporulation of the C. cassiicola fungus. The essential oil was able to maintain lower percentage of leaves with lesions in papaya seedling up to 14 days after the inoculation. The essential oil derived from C. zeylanicum, applied as a preventive treatment, is efficient in controlling the size of lesions in papaya fruits, however, the effect is not observed if the essential oil is applied after infection.