... 2. Main ingredients: Alginic Acid: 8-15%, organic matter≥ 50%, N≥ 0.5%, P2O5≥ 3.0%, K2O: 18-22%, much ... . 3. Functions: Improve crop's quality, Enhance resistance of crops, Induce plants to enhance resistance to disease, Meliorate soil, Increase harvest by 15 ... to 30%. 4. How to use: (1) Spraying: Diluted ...