... Product character: Black or brown powder, water soluble, pH=8-10Main ingredient: Alginic Acid: 8-15%, organic matter≥50 ... element and microelements, cytokinin, betaine, vitamine, trehalase, amino acid.Efficacy:Improve crop's quality, enhance resistance of crops, ... the evening or morning.2. Respray if raining is available within 8 hours after spraying.Validity: Three years seaweed extract powder with ...