Biostimulants
Humic Acid
Humic acids are high-molecular organic compounds that are part of the natural humus fraction in the soil. Within biostimulants, humic acids are used because of their strong influence on soil structure, root development, and the interaction between soil and plant.
What are humic acids?
Humic acids are formed from the long-term breakdown and conversion of organic material. Unlike fulvic acid, humic acids are less soluble and primarily active in the soil environment, where they fulfill structural and buffering functions.
- High-molecular humus compounds
- Limited solubility, strong soil-covering effect
- Important for soil structure and stability
- Primarily active in the root zone
Role of humic acids in the soil
Humic acids improve the physical and chemical properties of the soil. They promote aggregate formation, increase water retention capacity, and stabilize nutrients in the root zone.
Soil structure and water management
By binding soil particles, humic acids contribute to an airy soil structure. This improves both oxygen supply and the availability of water for roots.
Humic acids and nutrient availability
Humic acids bind nutrients to the soil complex and prevent leaching. This keeps nutrients available for uptake by the root system for a longer time.
Effects of humic acids on root development
Stimulation of root growth
Humic acids promote the development of fine roots and root hairs, increasing the absorption surface.
Improved root environment
A stable soil structure and improved water and nutrient availability create favorable conditions for active root growth.
Humic acids and plant physiology
Indirectly, humic acids support plant physiology by creating optimal conditions in the root zone, allowing plants to function more efficiently.
Humic acids in biostimulant formulations
Within biostimulants, humic acids are often combined with other raw materials to enhance soil-oriented effects and support root development.
- Usable in soil and drip applications
- Combines with fulvic acid and micronutrients
- Supports soil and root claims
- Suitable for various cultivation systems
Effect on plant performance
Correctly applied humic acids contribute to:
- Improved soil structure
- More active and extensive root system
- More efficient nutrient utilization
- Increased plant vitality
Overview: role of humic acids
| Aspect | Contribution of humic acids |
|---|---|
| Soil structure | Aggregate formation and stability |
| Water management | Increased water retention capacity |
| Nutrients | Binding and reduced leaching |
| Root development | Larger absorption surface |
| Formulation | Soil-oriented biostimulant raw material |