Evidence for rooting factors in a seaweed concentrate prepared from Ecklonia maxima

Using the mung bean rooting bioassay evidence was found for the presence of heat stable, translocatable root promoters in seaweed concentrate prepared from the brown alga Ecklonia maxima (Osbeck) Papenfuss. The optimum response was obtained with a 10 % solution. This concentration also promoted the rooting of six species of garden plants. Attempts are currently being made to identify the active component(s).