Ask a Question forum: Nematodes?

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Helpmesavemyplants
Jul 14, 2016 1:02 PM CST
I need help figuring out what this microscopic little guy is. We used a 200x microscope and this is what we saw. The stalks of the plant are now a light green/yellowish color, leafs are turning yellow and buds are turning brown (looking as if they are dead and going to turn to dust but still have moisture to them) please help!
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Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
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sooby
Jul 14, 2016 1:18 PM CST
Welcome! One of your pictures won't load, but from the other it doesn't look like a nematode to me, more like an eriophyid mite. Some pictures for you to compare:
https://www.google.ca/search?q=eriophyid+mite&client=safari&...

What plant is it on?
Name: Elaine
South Sarasota, Florida (Zone 9b)
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dyzzypyxxy
Jul 14, 2016 6:09 PM CST
I agree No idea what it is but it's not a nematode. They are soil dwellers that invade plants through the roots. Also they're much smaller - you wouldn't be able to see them at all with a 200x microscope. With a 1000x you can see them just barely, and they are longer and thinner proportionally with pointy tails.

Please won't you fill in your personal profile, so that we can know your location? It's so much easier to answer questions if we know where on the planet you are. There are also a lot of places on this continent that don't have any nematodes at all. Not sure about other continents.
Elaine

"Success is stumbling from failure to failure with no loss of enthusiasm." –Winston Churchill
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Jul 14, 2016 6:32 PM CST
You can see them with lower magnification, there's a good picture of a foliar nematode from hosta on this page at 40X for example, but I believe you need closer to 1000X to identify them - if you're someone who can identify nematodes to species, which I'm not.

http://hyg.ipm.illinois.edu/article.php?id=225

Name: Kat
Magnolia, Tx (Zone 8b)
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kittriana
Jul 14, 2016 6:49 PM CST
What plants? Any pix? 3 types of nematodes- and they attack specific portions of certain plants. Show the plant damages to get help with causes
kitt
Name: Laurie Basler
Western Washington (Zone 7b)
Houseplants Region: Pacific Northwest Sedums Orchids
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lauriebasler
Jul 15, 2016 12:21 AM CST
The damage I have seen affects the roots severely with growths, that look like warts on whitches nose, all over them.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Jul 15, 2016 4:16 AM CST
lauriebasler said:The damage I have seen affects the roots severely with growths, that look like warts on whitches nose, all over them.


Sounds like root knot nematode, like this?

http://aggie-horticulture.tamu.edu/galveston/images/GCMG-823...

It's not the OP's problem though, unless the critter in the OP's picture that looks like an eriophyid mite isn't the culprit for the damage. Some info on eriophyid mites:

http://www.missouribotanicalgarden.org/gardens-gardening/you...



[Last edited by sooby - Jul 15, 2016 4:27 AM (+)]
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