"Alan Gould" wrote in message
...
In article , Franz Heymann
writes
I thought that such Oxygen as a plant needs is absorbed as the
Ogygen
in Carbon Dioxide through the stomata or as components of molecules
or
ions which the plant takes in through the roots. I am probably
just
being ignorant, but I have never heard of Oxygen being absorbed
through the roots as gaseous molecules of Ogygen..
I do know that many plants abhor waterlogged conditions, but I did
not
think that that was connected with the uptake of gaseous Oxygen
molecules through the roots.

Oxygen is not absorbed into plant roots as a gas, it converts into
an
oxide mineral first, but that cannot happen in waterlogged or over-
compacted soil. That is why lawns need aeration from time to time.

That sounds more like it.

{:-))

Franz