New evidence has recently been published advising us that a woman's voice can stimulate an extra two inches of growth in tomato plants. The research on which this evidence is based was carried out by the Royal Horticultural Society. Last April, the experiments began with auditions for members of the public to record extracts from John Wyndham's 'The Day of the Triffids', Shakespeare's 'A Midsummer Night's dream' and a passage from Charles Darwin's 'Origin of the Species'. Ten voices were chosen and connected to ten tomato plants through headphones connected to their pots. The results showed that plants soothed by the voice of a woman grew an extra two inches.
I would like to add my own limited research to the work of the RHS. For the last two months I have placed a radio, blaring out human voices and music, in the middle of my garden - and left it on every night from around midnight until around eight-o-clock in the morning. The reason has been to discourage deer from entering and inflicting their gratuitous damage. Not only has this unusual strategy worked, but I never recall my plants putting on such growth. You might not consider this to be irrefutable empirical evidence - but I reckon its at least as sound as that of the RHS.