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White 'flies' on my tomatoes
"Franz Heymann" wrote in message ... "Sacha" wrote in message ... in article , Alan Gould at wrote on 18/10/03 11:54 am: In article , Franz Heymann notfranz. writes Plants do not have stomachs and cannot digest organic matter. It is also a moot point whether organic molecules, which tend to be rather large objects, can penetrate through the surface of the leaves into the interior of the plant. Plants do not have stomachs, but they process dissolved nutrients into a growing medium, both through their leaves and through their roots. They also process light into plant food by photosynthesis. I must say, I was a bit surprised at Franz's reply. Surely he's heard of foliar feeds? Of course I have. I use them regularly. They consist of inorganic compounds. Alan implied that plants could assimilate an infusion of nettles, which is likely to be largely organic in its contents. After a wee bit of reading to refresh my ailing memory, I have to say that apparently plants can also absorb growth hormones through their leaves. Franz |
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