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Rust on Grasses

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Posted by Vera_EWASH z5 EasternWA (My Page) on
Thu, Oct 14, 04 at 19:32

I have a question....

There is a grass growing in my area that I didn't sow...it grows in small clumps and stays pretty short. I noticed last weekend that a few of those clumps are infected with Rust. I only know about Hollyhock rust, but zilch on rust of grasses. I pulled a few of the clumps out (I'm guessing they may be annual grasses as the roots are shallow)but haven't got to them all. How does rust spread? Are the rest of my grasses and forbs in danger of becoming infected?

Thanks,

Vera

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RE: Rust on Grasses

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Hi Vera,

Rust is a fungus, it spreads by spores. I'm sure it can go after other plants. My black hollyhocks are rust magnets, but I haven't noticed rust spreading to my other plants. Knock wood. April

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RE: Rust on Grasses

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Thanks April...
I should of been asking if the grass rusts spread from one grass to another or one forb to another of the same genera, spieces or family, etc. I did know they were fungus and spread by spores..sorry. I thought I once heard that there were several type of rust with each having it's own host..some requiring two different hosts to complete life cycle...I'm just not sure how or where or if I am confused with something else?

Vera

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RE: Rust on Grasses

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  • Posted by Rosa 4-ish (My Page) on
    Sun, Oct 17, 04 at 8:22

Yes Vera, believe that you are correct. Hollyhock rust for instance will spread to Malva neglecta (and do more damage to it than to hollyhocks).
below is some info (from illinois but should still be helpful). Aside from fungicides the most common and effective management in a non-agricultural setting is cultural control (and you have already been doing that).

Here is a link that might be useful: IPM and rust of grass species

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RE: Rust on Grasses

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Thanks for the link Rosa :)

Vera

  
 

 

 


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