Probing Question: Does talking to plants help them grow?
Curated from: psu.edu
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The theory that plants benefit from human conversation dates to 1848, when German professor Gustav Fechner published the book Nanna (Soul-life of Plants)
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Penn State’s Ideas On Talking To Plants To Make Them Grow
- Rich Marini, head of Penn State's horticulture department, says there’s not a lot of research on it but there is some evidence that plants respond to sound
- Marini also said "Wind or vibration will induce changes in plant growth. Since sound is essentially vibration, my guess is that vibration is causing a response." (plants react to a lot of environmental stimuli bc the ability to respond to changing environments is vital to their survival
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A 2007 paper from scientists at South Korea's National Institute
- proposed that two genes involved in a plant's response to light are turned on by music played at 70 decibels & that’s about the level of a human conversation
- found differing responses depending on the frequency of the sound
- THE HIGHER THE FREQUENCY, THE MORE ACTIVE WAS THE GENE RESPONSE
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A Canadian paper
showed that seed germination is influenced by sound at 92 decibels—much louder than one would normally speak
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Penn State / Marini’s Thoughts Pt.2
- plants could have evolved to respond to vibration as a way to help them survive in windy environments. ("Plants exposed to wind produce a growth-retardant hormone called ethylene, which causes the plant to be shorter and to have thicker stems. So plants exposed to wind can better survive very windy conditions.")
- the carbon dioxide from our speach is probably not enough to make plants grow like that
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conclusion
light, water, and mineral nutrition are the best things to help plants grow but research shows talking to plants can help them grow
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IDEAS CURATED BY
CURATOR'S NOTE
they say the higher frequency we talk to plants at, the more they grow!!! thoughts on this????
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