??
Looking in Hessayon's book, could it be magnesium deficiency or a mosaic virus??
Doesn't look like blight to me, Tim.
G x
We have not (until last few days) had the right weather conditions for blight. We have had leaves like this on ones in the tunnel where we never (hubris) get blight, but the plants were very dry so it could be drought damage.
yikes, hope not Tim
We’ve got exactly the same symptoms on our potatoes. It’s been spreading from the lower leaves to the upper ones.
We’re not sure, but we reckon it’s early blight (alternaria solani). We've doused them in bordeaux.
Thanks for holding my hand!
No, it doesn't seem typical. And yes, the condtions have not suited 'it'. And yes, you've seen pic of how dry we are. It is very localised & hasn't yet spread upwards.
But I had sprayed before I saw it & will continue.
This is what we have:
(http://myweb.tiscali.co.uk/honoroak/pictures/potatoleaves.JPG)
More like it, but unusually spotty?
I have the same, on my earlies it reached the top leaves, as the haulms began to die back, in panic I lifted the whole crop. Now I have four sacks of earlies. ???
It looks very much like early blight, my maincrops have it on lower leaves too.
But it has been so dry, hardly ideal for blight.
I will reach for the boreaux mix to treat my maincrops.
EDIT: a bit of research on agricultural sites has revealed that early blight is very bad this year, commercial growers were unable to spray their crops in May, because of the wet weather, meaning early blight took hold in Kent, Lincolnshire and Suffolk in June. The problem was compounded because while commercial crops remained unsprayed they grew unusually fast, because of the water :(
I cut all the tops off my potatoes today, as they were just getting worse. Thank goodness it hasn't spread to the tomatoes.
It makes me feel better to hear that commercial growers are having the same problem. I thought I had done something wrong.
Quote from: cowpie on July 07, 2006, 22:26:30
I cut all the tops off my potatoes today, as they were just getting worse. Thank goodness it hasn't spread to the tomatoes.
It makes me feel better to hear that commercial growers are having the same problem. I thought I had done something wrong.
Some of my tmatoes have blight, and I destroyed some that did in early June.
BTW it isn't so much that the commercial growers are suffering too, more that we are suffereing because they are, if you get me.
Haven't grown any potatoes except a healthy crop of volunteer pink fir apples, but I have been Bordeaux-ing my tomatoes for the last month or more. Lost the last two years of toms to blight and was determined not to this year, hence the early treatment. Jolly glad I did and am continuing to do, in the circumstances.
BTW got you loud and clear and totally agree with you, Amphibian.
I have a really weird on with my Pink Firs.
Two of the plants have what I can only describe as a maroon to very dark brown colouring appearing on sets of leaves, which are positioned where you'd expect water to run to if you watered them with brown ink. Just two (with a healthy one in between).
Since getting back from the plots I've been through every pest and disease text I have, what feels like half the internet and I still haven't found ANYTHING to resemble it.
It definitely doesn't look like any blight I've seen, yet stems are darkened.
IS it blight???????????
I took off the stems below the odd colouring, and binned them. I shall be watching the rest of the plants like a hawk, but please, has anyone here ever seen anything similar?
(http://www.moonbells.com/A4Apics/spudoddity.jpg)
moonbells
Think its insect damage, there is one I don't know the name of that releases a toxin when it feeds which can make the leaves crinkle like yours are and also change the colour, either yellow it or redden it according to variety. Wish I could remember the name!
Just to mention, Bordeaux isn't a cure, it is only a preventative. If you already have blight, spraying won't make it go away.
Quote from: jennym on July 08, 2006, 22:32:05
Think its insect damage, there is one I don't know the name of that releases a toxin when it feeds which can make the leaves crinkle like yours are and also change the colour, either yellow it or redden it according to variety. Wish I could remember the name!
There's something called a blister beetle that can do that.
The reason I suspect it's something else is slightly complex.
When I bought the tubers, they looked odd. I had also got a lot left that had overwintered happily in my garage from last year's crop (which didn't get blight) and so I picked the best looking ones out of my crop and mixed them up with the bought ones. I also gave a couple to someone else, and they too have signs of this oddity on just one of their plants.
I don't know whether it was my saved and solid tubers that are going funny, or the ones that looked suspicious. But either way, I'm beginning to think one lot has some kind of virus.
(If it helps, my stored ones never quite got eaten up, I had that many! And some are still in the garage, growing foot-long shoots and still good apart from shrivelling a bit due to shooting - no rotting at all).
*** I wrote the above yesterday, just as we got a flipping power cut! Bang went the broadband: luckily I use a laptop so it stayed up, and I saved the typing elsewhere. I popped up to the lottie this morning and the haulms haven't collapsed or got any more damage. Phew! Sadly I now have another pest evident - some b*gger's pinched a load of my raspberries AND left the netting up so the birdies could get in!! Grrrrr........ >:( >:( >:( >:(
moonbells (why is it never simple?)