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Biodegradable poly-3-hydroxybutyrate as a fertiliser carrier.
Tatiana G Volova1, Svetlana V Prudnikova1, Anatoly N Boyandin1
1Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation.
Controlled-release fertilizers using poly-3-hydroxybutyrate (P3HB) loaded with urea offer a sustainable solution. These slow-release nitrogen formulations improve soil health and plant growth while reducing environmental impact.
Area of Science:
- Agricultural Science
- Polymer Science
- Environmental Science
Background:
- Mineral fertilizer use leads to environmental accumulation.
- Controlled-release fertilizers are a key preventative approach.
Purpose of the Study:
- To develop and investigate slow-release nitrogen fertilizer formulations.
- To assess the environmental and agricultural benefits of these formulations.
Main Methods:
- Urea was loaded into a degradable poly-3-hydroxybutyrate (P3HB) matrix.
- Formulations were created as films, pellets, and coated granules.
- Nitrogen release, soil microbial effects, and plant growth were evaluated.
Main Results:
- Nitrogen release lasted over 30 days and was controllable via fabrication.
- P3HB/urea formulations positively impacted soil microbial communities.
- Plant growth (creeping bentgrass, lettuce) improved, and nitrogen leaching decreased.
Conclusions:
- Developed slow-release nitrogen formulations can be co-applied with seeds.
- These formulations reduce environmental chemical load and adverse ecological effects.
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