Look what has happened to my Cucumbers

What has happened not seen this before all new grow bags as well
IMG]http://i227.photobucket.com/albums/dd244/guymarine/Bulk136.jpg[/img]


Any ideas
Dave

 

Looks rather like Mosaic virus - hopefully not though :(

 

Kristen. Could it be magnesium deffieciency, like on Toms Do Cucs suffer from that if you feed them. From info. from another thread I chuck Epsom Salts at anything that looks yellow.

 

Yes, that thought crossed my mind too, but I don't see a general slight yellowing between the veins of the healthy veins, which I think would be a sign. But it may not be possible to see that in a photo.

 

Looks like red spider mite to me, have a very close look on the underside of the leaves for minute insects or very fine webbing.
I need a hand lens to see them these days, but they are visible to the naked eye.

If it is RSM it will be the early stages, some shading onthe greenhouse may help along with a more humid atmosphere.

 

I'll go with Pete's suggestion - probably RSM. I'm fairly certain it isn't scorch as it tends to show as larger irregular areas and is whiter and more papery. I also think it is too brown in colour for mosaic virus and also too localised on the leaves.

 

Hi All

Thanks for the replies, Yes I am sure it is not sun scorch as I never water the leaves anywhere near the top of the plants and the yellow patches are there.

I have loooked under the leaves and cant see anything there!

I bought all new (growbags) soil as I seemed to have a few worries last year with desease

I don't have any shading but some lower leaves are marked!

I am getting cucumbers and they are not bitter at all.

Thanks for your help

Dave

 

Hi David G, apart from the mottling, they look great. What variety are they?

 

I have something very similar on my cucumbers. I have 2 plants and both are affected. It is mainly lower leaves. After looking in books my wife is sure it is mosaic virus and will not eat any of the cucumbers from them. Please put my mind at rest and tell me they are ok.

 

Hi Blackthorn
They are Burpless Tasty Green from Marshalls could be a coincidence but I normally buy the same from Thomson & Morgan.
Hi Steve
I was unaware that the cucumbers would be inedible if it is Mosaic Virus My Son and I have been eating them with no ill effects as yet although my sun tan is a bit blotchy (only joking about the suntan bit)
They seem to be producing ok at the moment so maybe I am worring too much.

Thanks

Dave

 

Mosaic virus only affects the leaves. The fruit is perfectly ok to eat. My courgettes get it nearly every year and it doesn't seem to make much difference to the cropping.

 

I wasn't worried about eating them. But after reading in a book that you should destroy any affected plants it set my wife thinking they were dangerous to eat. Oh well that's more cucumber for me, got the first one just about ready cant wait. Shop ones are not half as nice...