Making Green(s) With Black and White: Constructing Soils for Urban Agriculture Using Earthworms, Organic and Mineral Wastes

Urban agriculture has been of growing interest for a decade because it can address many economic and societal issues in the development modern cities. However, urban is often limited by availability fertile non-contaminated soils Recycling excavated mineral wastes from building activities to construct may be more sustainable alternative than importation topsoils rural zones. The present study aims evaluate possibility grow green vegetables on made with deep horizon waste compost. During three consecutive seasons, we tested situ effects different amounts compost (10, 20, 30%) addition an earthworm species ( Lumbricus terrestris ) production lettuce Lactuca sativa L.), arugula Eruca Mill.), spinach Spinacia oleracea L.) mono- co-culture. Our results demonstrate that possible reuse organic engineer adapted agriculture. Here, observed higher doses significantly increased plant biomass, especially when earthworms were introduced. For example, autumn, going 10 30% soil mixture allows multiply 2 even 4 presence earthworms. These partly due positive these two factors physical properties (micro- macro-porosity). This preliminary also showed some plants (arugula) are others (lettuce) only takes few months get highest yields. promising agricultures encourage test other combination but conduct experiments over long-term periods.