Improve crop's quality, enhance resistance of crops Product character: Black or brown powder, water soluble, pH=8-10Main ingredient: Alginic Acid ... , betaine, vitamine, trehalase, amino acid.Efficacy:Improve crop's quality, enhance resistance of crops, induce plants to enhance resistance to ... available within 8 hours after spraying.Validity: Three years seaweed extract powder with high potassium