Researchers Evaluated Lemongrass Seed Treatments
A new study tested alginate-based nanoemulsions for their ability to protect corn seeds from fungal pathogens.
Updated on Oct. 5, 2026 in Botany
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Scientists developed alginate-based nanoemulsions containing lemongrass essential oil to safeguard corn seeds during germination. While the treatment showed promise in laboratory settings, it proved less effective under soil conditions.
Why it matters
Seed treatments are essential to protecting crops from fungal pathogens during their most vulnerable stage of development. Finding effective, non-toxic alternatives to harsh chemicals could improve sustainable agricultural practices.
The nanoemulsions maintained stable droplet sizes between 111-128 nm over 90 days. Testing utilized concentrations of 5%, 10%, and 20% lemongrass essential oil to measure impact on fungal pathogen inhibition.
The details
The researchers applied alginate-based nanoemulsions to corn seeds to test for pathogen resistance. Although pure essential oil damaged seed viability, the nanoemulsion formulation successfully preserved germination and cold test performance in both dent and sweet corn varieties.
Timeline
The produced nanoemulsions maintained stable droplet sizes for a duration of 90 days.
The Big Picture
This study follows the broader trend of evaluating the development of biopesticides for sustainable agriculture to reduce chemical reliance. It shifts the focus from purely lab-based efficacy toward the practical challenges of maintaining protection in diverse soil environments.
This research could lead to the future development of safer, natural seed coating products that replace synthetic fungicides. Success in scaling these formulations could eventually provide farmers with more robust, environmentally friendly tools for early-season crop protection.
The takeaway
While these nanoemulsions show clear potential for controlling fungi in controlled settings, their performance in real-world soil remains a hurdle. Researchers will need to refine formulation dynamics before these natural alternatives can compete with standard chemical treatments.
Further reading
For more information on the current landscape of plant pathology, visit the Botany research section.
Source note: This article includes information reported by Nature.
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