Seaweed Extract
Seaweed Extract
Seaweed extracts are among the most used raw materials in biostimulants. They are derived from various types of seaweed and contain a complex mixture of biologically active compounds. Due to this broad composition, seaweed extracts do not work via a single mechanism but simultaneously support multiple physiological processes.
What is seaweed extract?
Seaweed extract is a concentrated extract of macroalgae, obtained through mechanical, thermal, or chemical extraction methods. Depending on the type of algae and extraction technique, the composition varies significantly, which directly influences the effect on the plant.
- Derived from brown, red, or green algae
- Contains a mix of organic and inorganic components
- Supports rather than nourishes
- Widely usable in formulations
Main types of algae
Ascophyllum nodosum
This brown algae is the most used source for biostimulants. Extracts from this are known for their effect on stress tolerance, root development, and physiological balance.
Ecklonia maxima
Extracts from this algae are often associated with growth stimulation and root activity, partly due to the specific ratio of biologically active components.
Laminaria species
Laminaria extracts are used to support stress adaptation and plant resilience, especially under abiotic stress conditions.
Composition of seaweed extracts
Seaweed extracts do not contain a single dominant active ingredient but function through the combination of various compounds.
- Polysaccharides
- Phenolic compounds
- Organic acids
- Osmoprotective substances
- Trace elements
Mechanisms of action in the plant
Regulation of stress response
Seaweed extracts support the regulation of internal stress pathways, allowing plants to respond faster and more controlled to drought, heat, and salt stress.
Improvement of physiological efficiency
By influencing energy distribution and metabolic activity, the plant remains functional under suboptimal conditions.
Priming of resilience
Seaweed extracts can activate defense mechanisms without causing direct stress, preparing plants for future challenges.
Seaweed extract and root–soil interaction
In addition to direct effects on the plant, seaweed extracts also influence the root environment. They support root activity and contribute to favorable interaction with soil processes.
Application in biostimulant formulations
Seaweed extracts are often used as a base component due to their broad action and high compatibility with other raw materials.
- Suitable for foliar and root application
- Combinable with other biostimulants
- Supportive of stress and vitality claims
- Widely applicable in various crops
Effect on plant performance
Properly formulated seaweed extracts contribute to:
- Improved stress tolerance
- More stable growth
- Increased plant vitality
- Better use of internal resources
Overview: role of seaweed extract
| Aspect | Contribution of seaweed extract |
|---|---|
| Stress management | Support of stress adaptation |
| Plant physiology | Optimization of internal processes |
| Resilience | Priming of defense mechanisms |
| Root activity | Improved root–soil interaction |
| Formulation | Multifunctional base raw material |