No school science fair would be complete without the obligatory experiment on the effect of music on plants. The alleged between and plant resulted, in 1970, an album entitled “Music for growing plants” by DJ Melbourne. It goes without saying, the failed to be among the 40 best sellers, but some scientists have developed serious investigations. Since the 50s, scientists have wondered how, or if, exposure of plants to music affects germination, growth, reproduction and genetics.
In an interview in 2008, Dr. Rich Marrini, head of the Department of Horticulture College of Agricultural Sciences College of Penn State, speculated that plants may have evolved and respond to vibrations such as those found in sound waves or windy conditions. According to the site of this institution, “Plants windward produce a hormone that slows the growth called etilena, resulting in shorter and thicker stems plants. Thus, these plants can better survive the windy condition to which they are exposed. ” As the is, in essence, a vibration, the genetic response of plants to sound waves is similar to having the wind.
Melody vs. Sound
Research published in 2004 in the “Journal of Complementary and Alternative Medicine” measured biological effects of music and noise on the germination of seeds of okra and long courgettes. The seeds were planted in a dark, damp and soundproof chamber. Some seeds were exposed to the sound of American flute for 16 hours a day. Others were exposed to pink noise spectrum (flicker noise or jitter) and other received no stimulation. Most seeds exposed to music welled similarly to those receiving pink noise or control groups, a finding that scientists considered statistically significant. The article concludes that music has important effects on the seeds of both plants.
Effects of rhythm
A 2007 study published in the “Asian Journal of Plant Sciences” found correlations between exposure to music and the speed of growth and mitotic division of onion seeds, or Allium cepa.Los researchers exposed some seeds to “classical music strong, complex, rhythmic accents on the second and fourth intervals “and other seeds were exposed to music more dynamic and rhythmic intervals. Seeds “heard” Chopin pieces, Mozsrt, Mussorgsky, Tchaikovsky, Schubert and Wagner. The studies showed that, although both rates have positive effects on root growth and the rate of mitotic division, the most dynamic music has a greater effect.
Much of the research on plants and music began in the ’50s and’ 60s. The botanical TC Singh exposed to an aquatic tones of a tuning fork plant. Normally, this plant produces a stream of protoplasm only in the evenings. Dr. Singh found that music could induce the plant to produce protoplasm at any time of day. Singh also presented a variety of species to the music of southern India, a violin with frequencies ranging over a range of 100 to 600 Hz, and found that plant growth had increased. The Canadian engineer Eugene Canby wheat plants exposed to certain classical music recordings and reported an increase in growth of 66%. A few years later, scientific Dorothy Retallack found that frequencies around 5000 Hz were more effective to induce plant growth. Classical music of European composers of the eighteenth and nineteenth centuries and music selections with North Indian sitar showed good results in the growth of plants; on the contrary, rock and selections by composers of the twentieth century they caused the plants to stay away from the speakers, to atrophy or even die.