Re: Foliar nematodes

Jeaa0088@aol.com wrote:

> 
>If one  has these nematodes in certain areas, will they eventually  spread to 
>the rest of the property? Are there any preventatives?
>

Hi Joanie,

They can spread, unfortunately. Sanitizing your tools can help. Try to 
avoid brushing up against infected plants (I've heard they can transfer 
this way). I may be paranoid, but if I have work to do in infected areas 
I do those areas last. Then I make sure to wash my clothing before doing 
any more work in other areas. This may sound like I don't do laundry 
very often, but I have a pair of jeans and a T-shirt that are designated 
as my gardening attire. Since I may only be out for an hour or two, I 
don't always wash the clothes after every trip to the garden.

http://www.extension.umn.edu/yardandgarden/ygbriefs/p151nematodesfoliar.html

This site has recommendations, also. See the last paragraph under Signs 
and also the info under Management.

They can also travel through the soil.  :-(

Carefully remove infected leaves. Be careful when you do your fall 
cleanup. I'm rereading the sites I sent you. There is some good info in 
them for controlling them.

One site mentions a hot water dip. I've also heard about pouring boiling 
water into the hole from where an infected plant has been removed.

The hosta world isn't happy that pesticides that worked on nematodes 
have been taken off the market. Because of this nematodes are becoming 
quite a problem. There is research going on to find something that will 
work. Hopefully, a "cure" will be found, soon!

Below is a message to one of my other groups as to how he is helping to 
control nematodes.

I can offer an alternative to risking losing a hosta to hot water 
torture for nematode treatment. Try using a granular systemic 
insecticide. Apply it around the plant and continue the following season 
a few more times (and the following season also). It has done wonders 
for myself and others. If you have nematodes they can easily spread 3-4' 
in all directions in the course of one year (more water, more spread). I 
have seen 10' in 2 years. I can comfortably say that I have them under 
control.

disclaimer: These products are not labeled for use on nematodes as of yet.

Karen
z5a

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