... utilization efficiency of mineral fertilizers in soil fulvic acid potassium BioFovaSoluble Yeast Extract PowderFEATURE: Extracted from ... matter, plant amino acids, enzymes, protein, nucleic acid etc., especailly rich in potassium, easy to ... 5g/cm3pH 5-7 GUARANTEED ANALYSISAmino Acids 18%Fulvic Acid 46%Total Nitrogen(N) 3%Potassium Oxide ... sealed moisture-proof condition. Biochemical Fulvic Acid Potassium