• Macronutrients:
  • N/Nitrogen – Encourage vegetative growth.
  • P₂O₅/Phosphorus – Promotes root development, helps in flower and fruit production.
  • K₂O/Potassium – Promotes fruit maturation and uniformity.
  • MgO/Magnesium – Aids in soil pH stabilization and stimulates bacterial activity in N-fixation.
  • CaO/Calcium – Important in cell wall structure, cell division, enzymes, and as an enzyme activator.
  • S/Sulfur – Part of protein, amino acids, vitamins; important in respiration.
• Micronutrients:
  • B/Boron – Important in sugar transport.
  • Zn/Zinc – Promotes production of growth hormones, starch formation and seed production.
  • Mn/Manganese – Is involved in enzyme activity for photosynthesis and nitrogen metabolism.
  • Fe/Iron – Is necessary for photosynthesis and chlorophyll formation.
  • Cu/Copper – Important in protein and carbohydrate metabolism.
  • Mo/Molybdenum – Promotes nitrogen fixation.
  • Co/Cobalt – Is for nitrogen fixation in legumes and in root nodules.
• Organic Acid:
  • Humic Acid – Release of Nitrogen for organic nutrient.
  • Amino Acid – Organic nutrient for plants.
• Plant Growth Promoting Microorganisms:
  • Nitrogen Fixing Microorganism (NFM) – (Azotobacter, Filamentous, Rhizobia) NFM can transform N₂ to ammonia by biological nitrogen fixation; NFM may increase the nitrogen uptake.
  • Lactobacillus Series – Creates natural plant enzymes producing organic acid as a bio regulator that can promote mineral elements for the absorption of crops. Liberates "LOCK-UP" Potassium.
  • Phosphorus Solubilizing Microorganism (PSM) – Breakdowns insoluble phosphate in the soil and transform them to phosphorus, iron and calcium fertilizer.
  • Mycorrhiza (P) – Act as Root extenders to enhance nutrient uptake. Provide protection from parasitic fungi/bacteria and nematode e.g. Stem rot, Root disease, Fusarium wilt.
  • Yeast Group Series – Creates vitamins, growth hormones and decomposes organic material for strengthening antibiotic diseases.
  • Actinomycete Series – It secretes antibiotic material to help curb diseases.
  • Bacillus Series – Plant protection and bio control.
  • Fluorescent Pseudomonas Series – Biological control of soil borne disease e.g. Stem rot, Phytophthora, Damping off.
  • Trichoderma Series – Enhance root development Biocontrol for damping off, fusarium wilt, sheath blight and Phytophthora. Facilitate decomposition of organic matter.

Note: Above component is for Liquid Bio-Fertilizer Microorganisms. Liquid Potassium Bio-Fertilizer has the same properties except for its macronutrients - contains K₂O/Potassium and MgO/Magnesium.

Diagram of Microorganisms Role in Plant growth