An agro-industrial process with minimal environmental impact, of the type comprising a step of cultivating vegetable and/or mushroom products, a step of harvesting the products, at least one step of thermo-mechanical treatment of the products in order to obtain intermediate products, and a step of packaging of a final stage of the intermediate products. The thermo-mechanical treatment step provides for a mechanical process of removing the unnecessary parts from the products so as to define waste； the waste, constituted exclusively by vegetable substances, is separated from the intermediate products, intended for the subsequent treatment and packaging steps, and sent into a biogas production unit； the digestate, constituted by the waste of the biogas production unit, is used as a fertilizer on the respective cultivation soil in a new step of cultivation of vegetable products.
