Biopesticide Evaluation from Lab to Greenhouse Scale of Essential Oils Used against Macrosiphum euphorbiae

Lana Dunan, Tara Malanga, Philippe Bearez, Sylvain Benhamou, Lucie S. Monticelli, Nicolas Desneux, Thomas Michel and Anne-Violette Lavoir
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Lana Dunan: Université Cote d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France
Tara Malanga: Université Cote d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France
Philippe Bearez: Université Cote d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France
Sylvain Benhamou: Université Cote d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France
Lucie S. Monticelli: Université Cote d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France
Nicolas Desneux: Université Cote d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France
Thomas Michel: Institut de Chimie de Nice, Université Côte d’Azur, CNRS, UMR 7272, Parc Valrose, CEDEX 2, 06108 Nice, France
Anne-Violette Lavoir: Université Cote d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France

Agriculture, 2021, vol. 11, issue 9, 1-14

Abstract: Aphids are recognized as a major threat to economically important crops. Their control is predominantly based on synthetic insecticides that are detrimental to human health and the environment. Botanical pesticides based on essential oils (EOs) are a promising alternative. In this study, the entomotoxicity of green anise and fennel EO fumigation was tested on the potato aphid Macrosiphum euphorbiae . Three different settings of increasing scale were considered (leaflet, whole plant and greenhouse) to appraise the consistency of EO impact from controlled laboratory to greenhouse production conditions. LC 50 values for green anise and fennel were 6.6 μl L −1 air and 12.2 μl L −1 air, respectively, based on dose-response curves in leaflet experiments but fennel EO induced phytotoxicity. EO efficiency was confirmed at the whole-plant scale. In the greenhouse experiment, fennel EO exhibited greater efficiency than at the laboratory scale equaling green anise EO efficiency but both EOs showed delayed phytotoxicity, illustrating the importance of long-term monitoring. The present study revealed the ability of both EOs to control M. euphorbiae populations under greenhouse conditions and hinted at the importance of assessing EO efficiency in realistic agronomic conditions (e.g., under the fluctuating environmental conditions usually occurring in greenhouses).

Keywords: insecticidal/aphicidal activity; botanical pesticides; pest management; aphids; fumigants; phytotoxicity (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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