Seaweed extracts – what makes them work?

Most of the seaweed extracts used in agriculture as biostimulants are extracted from species of brown algae (Phaeophyceae); principally the species Ascophyllum nodosum (knotted wrack), which grows in the intertidal zone of the Northern Hemisphere. It is thought that the stressful conditions of repeated exposure to desiccation, ultraviolet light and temperature fluctuations experienced by the […]