Thread: how much can plants absorb water from the atmosphere from humid days?
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Old 05-08-2008, 10:33 AM posted to sci.bio.botany
Sean Houtman Sean Houtman is offline
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Default how much can plants absorb water from the atmosphere from humid days?
wrote in news:d7b5174a-8af7-4332-8f1c-
:

I suspect some plant's leaves can absorb water from the air directly.
Seeing my hazelnut saplings shrivelling
in midday heat. However it is very humid with dew points of 73. So can
plants absorb moisture out of the
air and to what extent?


The amount of water that plants will absorb from the air when the humidity
is less than 100% is pretty much 0. The reason for this is that within the
leaves, there are air spaces, where the humidity is at or very close to
100%. If the humidity outside the leaf is lower, water will always move out
of the leaf.

Sean

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