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Old 16-01-2008, 12:19 PM posted to rec.gardens.orchids
Ray B Ray B is offline
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First recorded activity by GardenBanter: Nov 2006
Posts: 479
Default Disease Spread (was changing potting medium)

Your thoughts are correct, but just as in a hospital, why would you do
something that you know is going to greatly increase the likelihood of
spreading it?

Orchid roots are the most direct path into- and out of the plant, far more
so that through the foliage we come in contact with (that's one reason
foliar feeding is not very effective in them), and liquids are one of the
best media for a pathogen transfer.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies. Books, Artwork, and lots of Free Info!


"Manelli Family" wrote in message
...

"Diana Kulaga" wrote in message
. ..
The problem I have with the bucket method is that you can transfer
pathogens from one plant to the next. If at all possible, flush with a
hose, faucet or wand.


My thoughts are disease will travel in any case. On our hands, on our
clothes and shoes, insects can pass viral and bacterial disease from plant
to plant. We can move our plants around and unknowingly put a clean pot
where a diseased plant sat the day before. To prevent contamination we
would need to wear latex gloves and sterilize them between plants. Each
plant would have a spot and never be moved from it. We would then still
have bugs and insects to contend with. I've already found frogs on my
plants when spending the summer outdoors. Cross contamination is very
difficult to prevent.

I once worked in a hospital and known about contamination.