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Highlights

The challenge to agriculture is to adapt the circularity observed in complex natural systems into practical applications for producers and their value chains.

Abstract. Circularity in agriculture and food systems holds promise for recovering lost resources and addressing the unintended consequences of linear production. The challenge to agriculture is to adapt the circularity observed in complex natural ecosystems into practical applications for producers and their value chains, thereby shifting intensive linear systems away from the single goal of optimizing monoculture productivity toward circles of life capable of producing multiple benefits concurrently. Mixed multi-plant and animal agricultural systems that leverage integrated land management and biodiversity have potential to deliver multiple benefits, including increased productivity, pest and disease control, water quality, soil health, and economic profitability. Replacing linear “take, make, and dispose” systems with circular “make, use, recycle, and reuse” systems offers solutions for managing input costs and gaining income and ecosystem benefits from wastes that are otherwise lost and can harm agro-ecosystems. Technologies, innovations, and practices that reinforce and expand whole-system management, build on local conditions and knowledge, and that deliver multiple benefits beyond optimum production will be necessary for circular systems to emerge. This article provides several examples of current farm applications and experimentation with circular systems as practical solutions at different scales relevant to a range of production systems in developed, developing, and underdeveloped countries.