The Tickle Me Plant
"Dan Carlson is the inventor of the Sonic Bloom system. What motivates Carlson is a horrifying event he witnessed in the early 1960s. In Korea as an enlisted soldier he was obliged to watch, impotently, a starving Korean mother lay the legs of her small child beneath the rear wheel of an army truck: crushed legs created an authentic cripple, entitled to a family-saving food subsidy.
Back home, entitled to the GI Bill of Rights, Carlson spent many hours in the University of Minnesota library, studying plant physiology. Struck by the idea that certain sound frequencies might help a plant breathe better and absorb more nutrients, he experimented with various frequencies until, with the help of an audio engineer, he found one range that was consonant with the early morning bird chirping that helps plants open wider their stomata, or mouth-like pores.
On every leaf there are thousands of such small openings. Each stoma--less that 1/1000 of inch across--allows oxygen and water to pass out of the leaf, or transpire, while other gases, notably carbon dioxide, move in to be transformed by photosynthesis into sugars. During dry conditions, the stomata close to prevent a wilting plant from drying out completely.
Photomicrographs show plant stomata opening wider to Carlson's frequencies, while a Philips 505 Scanning Electron Microscope shows substantially higher stomata density on a leaf treated with Sonic Bloom; additionally, the individual stomata are more developed and better defined."
http://www.originalsonicbloom.com/background.html
peace,
mikey