Biological control; Crop protection; Plant defense; Entomopathogenic nematodes; Tritrophic interactions; Nematodes
Jaffuel Geoffrey, Imperiali Nicola, Shelby Kent, Campos-Herrera Raquel, Geisert Ryan, Maurhofer Monika, Loper Joyce, Keel Christoph, Turlings Ted C. J., Hibbard Bruce E. (2019), Protecting maize from rootworm damage with the combined application of arbuscular mycorrhizal fungi, Pseudomonas bacteria and entomopathogenic nematodes, in Scientific Reports
, 9(1), 3127-3127.
Jaffuel Geoffrey, Chappuis Laura, Guillarme Davy, Turlings Ted C.J., Glauser Gaétan (2018), Improved separation by at-column dilution in preparative hydrophilic interaction chromatography, in Journal of Chromatography A
, 1532, 136-143.
Chiriboga M. Xavier, Campos-Herrera Raquel, Jaffuel Geoffrey, Röder Gregory, Turlings Ted C.J. (2017), Diffusion of the maize root signal (E)-β-caryophyllene in soils of different textures and the effects on the migration of the entomopathogenic nematode Heterorhabditis megidis, in Rhizosphere
, 3, 53-59.
Jaffuel Geoffrey, Blanco-Pérez Rubén, Büchi Lucie, Mäder Paul, Fließbach Andreas, Charles Raphaël, Degen Thomas, Turlings Ted C.J., Campos-Herrera Raquel (2017), Effects of cover crops on the overwintering success of entomopathogenic nematodes and their antagonists, in Applied Soil Ecology
, 114, 62-73.
Jaffuel Geoffrey, Mäder Paul, Blanco-Perez Ruben, Chiriboga Xavier, Fliessbach Andreas, Turlings Ted C.J., Campos-Herrera Raquel (2016), Prevalence and activity of entomopathogenic nematodes and their antagonists in soils that are subject to different agricultural practices, in Agriculture, Ecosystems & Environment
, 230, 329-340.
Campos-Herrera Raquel, Jaffuel Geoffrey, Chiriboga Xavier, Blanco-Peréz Rubén, Fesselet Marie, Půža Vladimir, Mascher Fabio, Turlings Ted (2015), Traditional and molecular detection methods reveal intense interguild competition and other multitrophic interactions associated with native entomopathogenic nematodes in Swiss tillage soils, in Plant and Soil
, 389, 237-255.
Campos-Herrera R., Jaffuel G., Chiriboga X., Blanco-Perez R., Fesselet A. M., Hug S., Meuli R. G., Mäder P., Mascher F., Turlings T. C. J. (2015), Understanding the assemblage of entomopathogenic nematodes soil food web in natural and agricultural areas: new insights from a Swiss ecological research network, in Journal of Nematology
, 47(3), 228-228.
Campos-Herrera Raquel, Půža Vladimir, Jaffuel Geoffrey, Blanco-Pérez Rubén, Čepulytė-Rakauskienė Rasa, Turlings Ted C J (2015), Unraveling the intraguild competition between Oscheius spp. nematodes and entomopathogenic nematodes: Implications for their natural distribution in Swiss agricultural soils., in Journal of invertebrate pathology
, 132, 216-227.
In agriculture, soil quality is not just determined by the presence of nutrients and water, but also by the presence of beneficial and the absence of antagonistic organisms. The latter, which mainly come in the form of pathogens and herbivorous insects, are responsible for significant crop losses and are estimated to reduce potential yield by as much as 30%. Unlike aboveground pests and diseases, belowground antagonists are hard to reach with pesticides, and the negative environmental impact of pesticide application is a major concern. Approaches to fight belowground pests and diseases with biological control agents have had little success, especially in large-scale agriculture. Yet, the soil fauna contains a tremendous diversity of microorganisms, many of which, if present in sufficient numbers, can help to protect plants against their antagonists. In the context of NRP68, we will work closely together with other Swiss scientists to explore and exploit the full potential of beneficial microorganisms for crop protection in Switzerland. Within this collaborative consortium our project will focus on entomopathogenic nematodes (EPN). EPN are obligate parasites of insects, which they kill within days after parasitizing them. This makes EPN ideal candidates for the biological control of major root insect pests. We argue that, if the biology of EPN and the abiotic factors that determine their performance in different soil types are sufficiently well understood, beneficial EPN can be employed and exploited with great efficacy to combat most, if not all insect pests in agricultural soils. To achieve this we propose a project with the following objectives:1.To make an inventory of the EPN species composition and densities in different agricultural soils throughout Switzerland.2.To determine the persistence and pest control efficacy of commercially available EPN in different Swiss soil types.3.To evaluate the effect of agricultural management practices (monoculture, mixed cropping, crop rotation, cover crops, and tillage) on the persistence and control efficacy of EPN.4.To investigate and optimize the positive impact of EPN in combination with beneficial bacteria and fungi on crop performance in Switzerland.