Fulvic acid and humic acids

Humic acid and fulvic acid are both important components of humus, the organic matter in soil that is formed by the breakdown of plant and animal material. They play a crucial role in the nutrition of plants and also have benefits for human health. Despite their similarities, they have different properties and functions:

Humic acid:

• Structure: Humic acid consists of relatively large molecules. It is an important part of humus and contributes to the structure, porosity and water retention of the soil.
• Nutrient binding: It can bind nutrients, thereby making them available to plants. Humic acid acts as an ion exchanger that helps plant roots absorb nutrients.
• Stability: Because of its larger molecular structure, humic acid is stable in the soil and breaks down more slowly than fulvic acid.

Fulvic acid:

• Structure: Fulvic acid consists of smaller molecules. It is more water-soluble than humic acid, which makes it very effective at transporting nutrients.
• Nutrient transport: Thanks to its small size and high solubility, fulvic acid is easily absorbed by plants. It helps to transport nutrients within the plant and can even pass through the cell membranes of human cells, which means it also offers benefits for people.
• Fast action: Fulvic acid acts faster than humic acid because of its mobile nature and its ability to penetrate deep into plant and human cells.

Main differences:

• Size and solubility: Fulvic acid has smaller molecules and is more soluble in water, which makes it more efficient at transporting nutrients, while humic acid has larger molecules and plays a more structural role in the soil.
• Function: Humic acid plays a more important role in improving soil structure and retaining nutrients, while fulvic acid is mainly involved in the transport and absorption of nutrients.
• Stability and breakdown: Humic acid is more stable and breaks down more slowly in the soil compared with fulvic acid, which is more dynamic and acts faster in both the soil and in biological systems.

Both acids have their own unique benefits and applications in agriculture, horticulture and food supplements, and they complement each other in improving the health of plants, animals and people.