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Insects

Title:		"Conservation Biological Control of Codling Moth (Cydia pomonella): Effects of Two Aromatic Plants, Basil (Ocimum basilicum) and French Marigolds (Tagetes patula)"
Author(s):		Laffon L; Bischoff A; Gautier H; Gilles F; Gomez L; Lescourret F; Franck P;
Address:		"PSH, National Research Institute for Agriculture, Food and the Environment, INRAE, 84000 Avignon, France. Mediterranean Institute of Biodiversity and Ecology, IMBE, Avignon University, CNRS, IRD, Aix-Marseille University, IUT, Agroparc, 84000 Avignon, France"
Journal Title:		Insects
Year:		2022
Volume:		20221006
Issue:		10
Page Number:		-
DOI:		10.3390/insects13100908
ISSN/ISBN:		2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking)
Abstract:		"The addition of flowering companion plants within or around crop fields is a promising strategy to strengthen pest regulation by their natural enemies. Aromatic plants are frequently used as companion plants, but their effects on natural enemies remain unclear under field conditions. Here, we evaluated the effects of two aromatic plant species on the parasitism of the codling moth (Cydia pomonella) and the recruitment of predatory arthropods (spiders, earwigs) in a factorial field experiment. Apple trees were intercropped with basil (Ocimum basilicum), French marigolds (Tagetes patula), or ryegrass (Lolium perenne). The association between apple trees and O. basilicum increases codling moth parasitism, but does not affect arthropod predator abundances. Furthermore, we find a general negative effect of T. patula on arthropod diversities and abundances, including the pest and its natural enemies. Finally, changes in the parasitism rate and arthropod community structure due to the aromatic plants do not reduce codling moth density or associated apple damage. Further experiments are needed to determine the mechanisms involved in aromatic plant effects on pest repellence and on natural enemy recruitment (volatile organic compound composition, floral resource supply, or pest density dependence)"
Keywords:		apple orchards companion plants conservation biological control parasitism;
Notes:		"PubMed-not-MEDLINELaffon, Ludivine Bischoff, Armin Gautier, Helene Gilles, Florent Gomez, Laurent Lescourret, Francoise Franck, Pierre eng 618110/ApiTree C-IPM project/ Switzerland 2022/10/28 Insects. 2022 Oct 6; 13(10):908. doi: 10.3390/insects13100908"