In a message dated 3/7/2003 1:37:05 PM Eastern Standard Time, writes:

For bonsai, root knot nematodes are the biggest threat, since they
have a broad host range and repotting the plant won't fix the problem
(the female nematode is embedded in the gall). The best option is to
prune roots to remove as many galls as possible, and then repot in
clean media. There are parasitic fungi that kill nematodes, and use
of such biocontrol agents will reduce the number of
juvenile
nematodes.

Hi Nina:

I believe Methyl Bromide was used for 50 years as a control tactic--a lethal control tactic.

Today, dried sesame plant(marketed as Nematrol)is used. I have found it to be effective in dealing with Root knot nematodes, which at one time threatened my specimen Elaeagnus.

Cordially,

Michael Persiano
members.aol.com/iasnob/index.html

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