Seaweed Fertilizer, seaweed organic fertilizer. Used by spraying and irrigation / fertigation, or added to other ... : Black or brown powder,water soluble,pH=8-10Main ingredient:Alginic Acid: 8-15%,organic matter≥50%,mannitol: 1-6%,N≥0 ... ; much secondary element and icroelements, cytokinin, betaine, vitamine, trehalase, amino acid.Efficacy:Improve crop's quality,enhance resistance of crops,induce ...