Biostimulation Effect of the Seaweed Extract (Ecklonia maxima Osbeck) and Plant Growth Promoting Bacteria (Bacillus subtilis Ehrenberg) on the Growth of the European Beech (Fagus sylvatica L.) Seedlings. - Krupa, Mateusz; Banach, Jacek; Małek, Stanisław; Witkowicz, Robert (Forests (19994907), 2025)