Transition agroécologique et régulation biologique de bio-agresseurs : protocole de suivi et relevés initiaux pour la plateforme CA-SYS

Abstract : Different solutions must be sought to maintain or improve the durability of agroecosystems. Inra’s experimental platform will set up in 2019 different agroecological systems without pesticide, less tillage and with the implementation of new AEI, in order to test if the biological regulation is better. Is there an effect from the AEI already implemented on the biological regulation ? Thanks to predation cards of Viola arvensis and aphids, biological regulation in winter cereals has been studied. Carabids were also trapped to know their activity-density and their richness. We shown that AEI have no effect on biological regulation, and that surveys at the edge of crops (8m) does not lead to a better biological regulation than those in the center of the parcel (25m). Moreover the carabids’ activity-density or richness is not better in crops surrounded by AEI than in crops without AEI. We found also that the proximity of AEI around crops leads to a better carabids’ activity-density in the crops than in the AEI. The monitoring of biological regulation in futures years will allow concluding with the question of biological regulation trend.
Document type :
Master Thesis
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Submitted on : Friday, December 21, 2018 - 1:34:27 PM
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Camille Méline. Transition agroécologique et régulation biologique de bio-agresseurs : protocole de suivi et relevés initiaux pour la plateforme CA-SYS. Sciences du Vivant [q-bio]. 2018. ⟨dumas-01963554⟩

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