Yellow Spots on Hop Leafs

[barhoc11]

I am trying to handle this before it gets potentially worse. Anyone know what could be causing the yellow spots/lines on my Cascade plant? The cones all look good so far but are not ready do pick. This is a first year plant so cones are not huge and the bines are about 10 feet tall.

 

[kegerators]

Did you fertilize?

 

[barhoc11]

Did you fertilize?

I have used some miracle grow occasionally but nothing major.

 

[day_trippr]

Did you look very closely at the underside of that leaf for bugs like mites?

Cheers!

 

[PapaBearJay]

I am trying to handle this before it gets potentially worse. Anyone know what could be causing the yellow spots/lines on my Cascade plant? The cones all look good so far but are not ready do pick. This is a first year plant so cones are not huge and the bines are about 10 feet tall.

Those look like viral symptoms.

 

[barhoc11]

I got some iron to add to the soil and some slow release fertilizer, going to see if that helps. Thanks for the replies

 

[PapaBearJay]

I got some iron to add to the soil and some slow release fertilizer, going to see if that helps. Thanks for the replies

Those look to be fairly older leaves that are being afflicted, and if so I highly doubt your issue is due to iron deficiency.

In most cases, micronutrient deficiencies are found at the growing point of the plant. Whereas macronutrient deficiencies are found on older/basal foliage.


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[tellyho]

Probably nothing. I wouldn't worry about it unless you see it spread. You can always remove the affected vegetation. Hops are VERY hardy; have a brew and forget about it.


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[PapaBearJay]

Probably nothing. I wouldn't worry about it unless you see it spread. You can always remove the affected vegetation. Hops are VERY hardy; have a brew and forget about it.


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It's unfortunate that you think that. Much like animals or human, once a plant has a virus, it HAS the virus. It is systemic.

There are very few patrons here who likely have the facilities or the patience necessary to recover unaffected tissue and then regenerate an entirely "new" plant.

If that last comment was also in regards to plant nutrition, it's also a shame that you think that. Hardy or not, health is important in all aspects of growth and development, especially in a perennial crop like hops.




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[tellyho]

I agree that a virus is a virus. The cure for a systemic virus is completely removing the affected plant and burning it to avoid contamination. I don't think that's called for at this point.


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[barhoc11]

I tried some treatments hoping it would help the yellowing of the plant but it doesn't seem to have worked. I did get some cones on this first year plant and they seem healthy and smell good. Now my question is, if I cut everything back to the ground in preparation for next year, will I have this virus in the spring? Is there anything I can do to salvage this plant and not need to start over with a new rhizome?

 

[barhoc11]

Here are a couple of updated photos from today. Thanks again for everyone's help.

 

[B-Hoppy]

There's a bunch of different types of viruses out there that cause different problems for the plants. Some can reduce vigor quite a bit while others just cause some cosmetic damage like is shown on yours. If it were me, I'd let it go for another year or two and see what happens as I've got a few with similar problems that still produce very well without the problem getting any worse.

 

[flars]

Found this, Hop Stunt viroid infection.
http://pnwhandbooks.org/plantdisease/hop-humulus-lupulus-viroid-diseases

 

[B-Hoppy]

Right on! Here's the whole paper: http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-92-3-0324