An agricultural system for generating food and fuel products includes an arrangement for supplying grain, wherein the agricultural system includes a hydroponics arrangement for receiving the supplied grain and for germinating and growing the supplied grain in a light-excluded environment in one or more hydroponics trays to generate plant growth material, and a harvesting arrangement for receiving the plant growth material and processing the plant growth material to generate corresponding livestock feed. The hydroponics arrangement includes a gaseous fumigation arrangement for gaseously fumigating the supplied grain during growing of the grain in the light-excluded environment. The gaseous fumigation arrangement is operable to employ ozone gas for fumigating the supplied grain to reduce growth of mould in the plant growth material.
