Weed-Suppressive Crops in Agricultural Systems: Impacts on Ecosystem Services and Crop Yield

Agroecological approaches are increasingly recognized as sustainable alternatives to conventional weed management practices. This review examines the role of soybean, potato, and winter wheat as key crops within agroecological systems for effective weed suppression. Four management strategies—crop rotation, post-harvest mulching, optimized planting density (for soybean and potato), and varietal mixtures (for winter wheat)—are evaluated for their influence on weed dynamics and overall system performance. The synthesis of current studies indicates that these practices can significantly reduce weed pressure while enhancing soil health, biodiversity, and the provision of key ecosystem services, including provisioning, regulating, and supporting functions. In addition, these approaches contribute to improved crop productivity and reduced reliance on chemical inputs. Agroecological strategies also support pest regulation, water-use efficiency, and climate resilience, promoting more sustainable and resource-efficient agricultural systems. Despite these benefits, challenges related to farmer adoption, labor requirements, and limited policy support remain. Overall, this review highlights the potential of integrated agroecological practices to achieve sustainable agricultural intensification while balancing ecological sustainability with economic viability. Further research and supportive policy frameworks are needed to facilitate the wider implementation of these approaches across diverse agroecosystems.