When does corrugation become cellular collapse?

Thistle and Maize(Zone 5a- Eastern IA)July 25, 2014

As in a symptom of hvx. Another picture to follow this one...

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Thistle and Maize(Zone 5a- Eastern IA)

Second

    Bookmark   July 25, 2014 at 6:17PM
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ken_adrian Adrian MI cold Z5

it would be my opinion.. never...

words mean things...and these are two different things ...

chris is the expert.. but i like trying ..

i see nothing in the second pic.. but corrugation ...

BUT ..... i see something really funky in the first... that has nothing to do with the corrugation ... but i dont know what it is ... hvx.. or some other virus... looking weird because of the corrugation ...

whats the plant.. wide brim??? .. not that it matters ...

ken

    Bookmark   July 25, 2014 at 6:34PM
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Thistle and Maize(Zone 5a- Eastern IA)

I worded that badly. I dont mean corrugation becomes collapse. I was trying to determine when that deep ripple is corrugation and not overreact to thinking it's hvx or collapse. Sorry for my wording on that.

Yes, a wide brim I think. Luckily not mine but a neighbor's. If I hadn't seen that odd spot you noted in the first I would've said just corrugation like the second picture shows. I included it for reference to what the rest of the plant looks like. Thanks for any input.

    Bookmark   July 25, 2014 at 6:48PM
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