Asko L 50 is biostimulant derived from the brown alga Ascophyllum nodosum that improves plant nutrients use efficiency, tolerance to abiotic stress and, in general, the qualitative characteristics of crops. Asko L 50 is a natural concentrate of organic compounds such as betaines, polyamines, auxins and natural cytokinins, which induce a positive effect on yields both in qualitative and quantitative terms. In fact, Asko L 50 promotes flowering and fruit setting and delays cellular ageing while increasing the amount of nutrients absorbed by the plant. As a result, Asko L 50 determines an increase in yield, greater efficiency in the use of water and a reduction in production costs. Finally, the product stimulates the production of phytoalexins, compounds that improve resistance responses to harmful agents.