Efficacy of essential oil of Piper aduncum against nymphs and adults of Diaphorina citri Haroldo XL Volpea*, Murilo Fazolinb, Rafael B Garciaa, Rodrigo F Magnania,c, José Carlos Barbosad and Marcelo P Mirandaa a Fundo de Defesa da Citricultura, Av. Dr. Adhemar Pereira de Barros, 201, 14807-040, Araraquara, Sao Paulo, Brazil b Embrapa Acre, P.O. Box 321, 69908-970, Rio Branco, Acre, Brazil cChemistry Department, Federal University of São Carlos, São Carlos, Rodovia Washington Luís, Km 235, s/n, 13565-905, São Carlos, Sao Paulo, Brazil d Faculty of Agricultural and Veterinary Sciences of Jaboticabal – FCAV/Unesp, Department of Exact Sciences, via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, Sao Paulo, Brazil *Correspondence to: Haroldo XL Volpe, Fundo de Defesa da Citricultura, Av. Dr. Adhemar Pereira de Barros, 201, Vila Melhado, Via de Acesso Prof. Paulo Donato Castellane, s/n, 14807- 040, Araraquara, Sao Paulo, Brazil. Phone: +55 16 3301-7025. E-mail:
[email protected] Accepted Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/ps.4143 This article is protected by copyright. All rights reserved. Abstract BACKGROUND: Insecticide application is the main way to control Diaphorina citri. However, it causes environmental contamination, has a negative impact on beneficial organisms, and leads to psyllid resistance. The essential oil of Piper aduncum has low toxicity towards the environment and contains dillapiol, which was proven to be effective against several crop pests.