... 15% Natural Seaweed Extract Powder, 100% water soluble, organic fertilizer China patent no.: 03112663.6 Product character:Black ... or brown flake, water soluble, pH=8-10Main ingredient: ... %.Method of application: Spraying: Diluted with water by 1:2500-3000.The crops with one ... Seaweed Extract Powder, 100% water soluble, organic fertilizer