2024/06/06 by Michel, Adeline, Cordeau, Stéphane, Chauvel, Bruno +4
#Co-conception #Coconception #Couverture permanente #Gestion de la flore adventice #Glyphosate #No-tillage #Pedagogical method #Permanent cover #Réflexion pédagogique #Semis direct #Weed control
paper · doi:10.17180/ciag-2024-vol94-art10
Direct seeding under permanent cover is an ambitious farming system that aims to promote permanent together a number of agricultural stakeholders working with farmers in Normandy Region on a project that aimed to 1/ conduct a technical survey on alternatives to glyphosate use, 2/ conduct field trials of technical practices on a network of farmers' plots, and 3/ redesign the system in a workshop with farmers and advisors. While technical monitoring enabled innovative practices to be identified during the cropping and intercropping periods, field trials tested technical routes such as shredding the cover crop, increasing the sowing density of the cereal crop and reducing the use of appropriate herbicides. Through the work of students and workshops with extension agents, the workshop-based redesign enabled farmers to face situations involving greater change than those they had undertaken on their own farms. The ENGAGED project showed that the framework of restrictions, based on a drastic reduction in herbicide use, does not make it possible to achieve yields equivalent to conventional management. The cover crop then becomes the main weed responsible for major yield losses and few viable technical solutions have been identified for a single crop year.