Title: Literature review on the potential of urban waste for the fertilization of urban agriculture: A closer look at the metropolitan area of Barcelona / Urban agriculture (UA) activities are increasing in popularity and importance due to greater food demands and reductions in agricultural land, also advocating for greater local food supply and security as well as the social and community cohesion perspective.
Proof-of-Concept funded through URBAG project, January 2024-June 2025. What is hindering nutrient circularity in urban argiculture? The impoverished state and quality of the urban and peri-urban agricultural soil undermines nutrient circularity. Nutrient recovery is of no use unless soil is healthy!!