Humic acid is the most important part of humic substances, which are the major organic constituents of soil (humus), peat, coal, many upland streams, dystrophic lakes, and ocean water. It is produced by biodegradation of dead organic matter
All humic acids are primarily composed of carbon, oxygen, nitrogen and hydrogen. They may also contain sulfur and phosphorus in varying minute amounts depending on the source. Like most natural polymers, humic acids have complex structures and contain a number of biologically active functional groups including carboxylic acid, phenolic hydroxyl, methoxyl and amine groups
Functions of Humic acid
- Enhance nutrient uptake by combining nutrients and humic acid as well as keep a well-balanced nutrition.
- Improve the structure of soil, increase the buffering powder of soil, optimize NPK absorption by plants.
- Neutralize both acid and alkaline soils, regulate the PH value of soils
- Enhance the resilience of crops, such as cold, drought, pest, disease and toppling resistance
- Promote healthier, stronger plants and beautify appearance
- Uses buffering the effects of excessive elements (particularly sodium), toxic chemicals and heavy metals.
- Promoting seed germination in a short time
- Offer soil structure improvement by promoting fungi to create a crumb structure for better water and oxygen intake and improved root penetration
There are 2 types of humic acids in Organic Fertilizer: humic acids and fulvic acids. Fulvic acids dissolve when they come into contact with amino acids and sugars and in solutions with a low pH