In message , Janet Tweedy
wrote
In article
,
Dave Hill writes
For pest control he went through quite quickly with a hot air blower
blasting out air at 100c through the plants,
Interesting.
David Hill


I find it amazing that plants can withstand that blast and yet the
pests were presumably blown away. I enjoyed it more when they said that
they didn't know how it worked so i wonder who had the bright idea in
the first place?

It only takes a fraction of a second to heat up the mass of water inside
of an insect to a temperature that would kill it. It takes considerably
longer to heat up the mass water inside a plant (leaf) to a temperature
where it would cause damage.

--
Alan
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