... ≥ 20 g/L, organic matter≥100 g/L, mannitol ≥10 g/L, N≥5 g/L, P2O5≥0.5 g/L, K2O≥50 ... g/L, I≥200ppm; ... IIAlginic acid≥20 g/L, Organic matter≥90 g/L, N≥1.5 g/L, P2O5≥ 80 g/L, K2O≥140 g/LPH ... for 800-1000 times. Dosage: 2.8-3.5 L/ha. To apply 3~4 times in whole growing ... the liquid is not allowed.Validity: Two years seaweed extract liquid