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Biochar from Chlorella sp. algae as a plant growth activator
Karolina Dziosa1, Monika Makowska2
1Bioeconomy and Ecoinnovation Centre, Łukasiewicz Research Network-Institute for Sustainable Technologies in Radom, ul.Pułaskiego 6/10, Radom, Poland. Karolina.dziosa@itee.lukasiewicz.gov.pl.
Scientific Reports
|July 2, 2025
Summary
Biochar derived from microalgae biomass effectively stimulates radish seed germination and seedling growth. This sustainable biochar offers a novel, eco-friendly solution for enhancing plant development in agriculture.
Area of Science:
- Agricultural Science
- Biotechnology
- Environmental Science
Background:
- Modern agriculture seeks sustainable and effective plant growth stimulants.
- Current market lacks readily available natural growth enhancers.
- Microalgae biomass presents a potential source for novel agricultural inputs.
Purpose of the Study:
- To evaluate the efficacy of microalgae (Chlorella sp.)-derived biochar as a stimulant for radish seed germination.
- To analyze the impact of this biochar on key germination and seedling parameters.
- To explore its potential contribution to sustainable agriculture.
Main Methods:
- Pyrolysis of Chlorella sp. biomass at 400°C to produce biochar.
- Characterization of biochar's porous structure and functional groups (FTIR analysis).
- Testing biochar's effect on radish seed germination metrics: average germination time, germination energy, germination capacity, and chlorophyll content.
Main Results:
- Biochar exhibited a porous structure with characteristic carbon functional groups.
- Radish seeds treated with biochar showed a reduced average germination time (1.12 days vs. 1.87 days for control).
- Improved germination energy (93% vs. 88%) and germination capacity (97% vs. 92%) were observed with biochar application.
Conclusions:
- Biochar produced from Chlorella sp. biomass acts as a potent stimulant for radish seed germination and growth.
- This application represents an innovative and environmentally conscious approach for sustainable agriculture.
- Microalgae-based biochar holds promise for enhancing crop productivity while promoting ecological balance.
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