UV light does not penetrate surfaces, so it could only kill what is on the
surface and only what receives the required UV dosage. Any bacterial in
shadows created by limbs, leaves, branches, or flower parts would remain
untreated, and in the case of fire blight, the rapid multiplication of
A couple of ideas for you PhD/research types. How about using UV light to
kill frost nucleating bacteria, or UV to kill the fire blight bacteria? A
light bank could be towed behind a tractor and the trees could be
irradiated by UV light.
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