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Growth Inhibition and Allelopathy Enhancement of Alternanthera philoxeroides Under Long-Term Exposure to Different Sound Intensities
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Growth Inhibition and Allelopathy Enhancement of Alternanthera philoxeroides Under Long-Term Exposure to Different Sound Intensities
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Journal Article
Growth Inhibition and Allelopathy Enhancement of Alternanthera philoxeroides Under Long-Term Exposure to Different Sound Intensities
2026
Overview
Although numerous studies have explored the effects of various sounds on plants, a comparative understanding of how long-term exposure to low-intensity sound and rhythmic versus non-rhythmic sound impact on plants is still lacking. In this study, we conducted a field experiment to determine the growth, physiological responses, and allelopathic intensity of an invasive plant
under prolonged exposure to different sound rhythms and intensities. The results showed that even at low intensity, long-term sound exposure inhibited the growth of
while activating its defense mechanisms; these responses intensified with increasing sound intensity. However, the plant could not well distinguish between rhythmic and non-rhythmic sound treatments, although its allelopathic intensity also increased with sound intensity. This study extends the knowledge of plant response to acoustic stimuli, highlights the limited ability of plants to discriminate sound rhythms, and underestimates the negative impacts of prolonged low-intensity sound on plant performance. Therefore, the application of acoustic treatment techniques in future horticulture and agriculture requires a careful trade-off between their potential benefits and adverse effects on plants.
