Agro SET hydrogel fertilizer is a gelled red algae extract rich in natural organic matter. It affects the growth of aerial parts, plant roots, flowering and fruit set, and fruit enlargement. Its richness in mineral elements contributes to the mineral nutrition of plants. This contribution of organic matter enriches and balances the soil. In particular, its gel form allows water retention. Access to hydration and nutrients is facilitated for plants. APPLICATION METHOD Fertilizing gels are planted close to the roots. The roots will slowly colonize the gel. The plant will hydrate itself while assimilating the nutrients contained in the beads. Watering the beads allows them to be rehydrated and used for longer.