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Extremely Low Frequency Radiation Enhances Soybean Chlorophyll Index and Nutrient Use Efficiency Under Suboptimal
Fernanda Miotti1,2, Rodrigo Lemos Lovato3, Luzo Dantas Júnior3
1Department of Biological Science, "Luiz de Queiroz" College of Agriculture (Esalq), University of São Paulo (USP), Piracicaba 13418-900, SP, Brazil.
Plants (Basel, Switzerland)
|February 13, 2026
Summary
Extremely Low Frequency (ELF) exposure enhanced soybean chlorophyll levels, especially under nutrient limitations. This sustainable approach shows potential for boosting crop productivity and nutrient uptake in agriculture.
Area of Science:
- Agricultural Science
- Plant Physiology
- Biophysics
Background:
- Optimizing crop physiological responses is key for productivity in nutrient-limited environments.
- Extremely Low Frequency (ELF) non-ionizing radiation (0.3-300 Hz) interacts with biological systems.
- ELF has potential applications in sustainable agriculture.
Purpose of the Study:
- To evaluate the effects of ELF treatments on soybean morphophysiological parameters.
- To assess ELF's impact on plant growth under varying nutrient solution strengths.
- To determine the potential of ELF for enhancing crop performance in challenging conditions.
Main Methods:
- Soybean plants were grown under controlled conditions.
- Plants were subjected to ELF treatments (Control, TA, TB) and nutrient solutions (50%, 75%, 100% Hoagland).
- Measurements included chlorophyll index, root/shoot length, and dry mass.
Main Results:
- ELF treatment significantly enhanced the chlorophyll index in soybean plants.
- Treatment TB (decreasing interatomic spacing) showed the most significant increase in chlorophyll.
- Findings suggest ELF may improve nutrient assimilation, particularly nitrogen and magnesium.
Conclusions:
- ELF treatment shows potential to enhance plant physiological performance, even under nutrient stress.
- ELF exposure, combined with nutrient solutions, may promote plant health by increasing chlorophyll and improving nutrient uptake.
- This represents a promising sustainable strategy for boosting crop productivity and resource use efficiency.
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