Humic acid extend the function of fertilizer

Both groups of complex organic acids, humic acids and fulvic acids have been proven to be involved in three specific chemical reactions. These reactions are commonly termed:organic-fertilizers1

1.Electrostatic attraction

  • Electrostatic attraction of trace minerals reduces leaching into subsoil. The cation is readily available in the soil environment for transport into the plant roots or exchanged for another metal cation.
  • Electrically charged sites on humic substances function to dissolve and bind trace minerals. This is termed chelation. Evidence for the dissolution of minerals can be supported by x ray diffraction and infrared analysis. Chelation of plant nutrients such as iron (Fe), copper (Cu), zinc (Zn), magnesium (Mg), manganese (Mn), and calcium (Ca) reduces their toxicity as cations, prevents their leaching, and increases their uptake rate by plant roots.

2.Complex formation or chelation

  • The chelation process also increases the mass flow of micronutrient mineral elements to the roots.
  • The chelation of heavy toxic metallic elements present within the soil is also influenced by humic substances present. When toxic heavy metals such as mercury (Hg), lead (Pb), and cadmium (Cd) are chelated these organo metal complexes become less available for plant uptake.

3.Water bridginghumic_acid__potassium_humate_fertilizer synergist

  • Water bridging is an important function of humic acid and fulvic acids. Water bridging is believed to improve the mobility of nutrient ions through the soil solution to the root. These mechanisms also help reduce leaching of plant nutrients into the subsoil.
  • The humic acid will grab and hold newly applied fertiliser just as it frees up and holds minerals already in the soil. In this way, less is lost to the environment and more is made available to the plant.
  • Fungi and fulvic in humic also greatly increase the transfer of minerals into the plant.
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