Leaves turning yellow on young potato plants...

[nooby]

Hi all...

Looking for help from the more knowledgable... Again!

I have planted some first earlies (Arran Pilot and Rocket) and some Maris Pipers on my allotment. I have grown potatoes in pots for a while now and have never seen this before. The plants are all growing well but the the other day I noticed that a few of the leaves on one or two of the earlies were yellow at the tips. Today I went back and this is what I found, it seems to be spreading onto other leaves and the edges are sort of a translucent brown...



I did a google search and one of the pages I found was this:

What Does it Mean When Potato Plants Turn Yellow? | Home Guides | SF Gate

Should I be concerned? Other than this the plants look very healthy and are growing rapidly.

I have found a few old spuds in the ground from last year I assume. This was before I took it over but I know they had blight on the allotment. Unfortunately I have no way of knowing exactly where potatoes have been grown so cant really rotate.

For info: The ground is clay like, I had dug in some well rotted manure and some commercial compost. I haven't really put anything else in, should I at this stage if so what? Could it be a deficiency? Or am I going to have to start culling plants!?

[It never rains..it pours]

Hi nooby
Theres a thread running here but dont think your looks such a clear deficency / lock up type issue
https://www.growfruitandveg.co.uk/gr...ncy_96647.html
Are there brown dots on the leaves or is that dirt ?

[nooby]

Thanks for the reply... I did see that thread but I didn't want to hijack it as mine looks different. Thats just dirt. No brown dots. Should I pull these up? As a cautionary measure?

[It never rains..it pours]

If thats dirt so no brown spots then Im not convinced its blight. You could remove them if only a odd one or two. I put one Ill looking tomato plant away from the others and it never recovered with feeding so removed it now but easy to isolate a pot
Thread below may help.
https://www.growfruitandveg.co.uk/gr...ght_33866.html

[nickdub]

I'd be inclined just to monitor how your plants go for now - I don't think what you have so far is conclusive evidence that anything much is wrong - obviously if the plants get worse ie more new leaves come out a funny colour, then post again please.

[nooby]

Ok, now thats worrying. When you said brown spots I thought you meant spots as in circular leopard type spots. As I mentioned in my first post, when I went back today there is a definate translucent light tan patch on the tip of the leaf, you can just see it in my photo.

I read on here somewhere that it is unlikely Blight would over winter? Can it be a problem so early? Sorry for the noob questions...

I am at odds on what to do really.

[nooby]

I'd be inclined just to monitor how your plants go for now - I don't think what you have so far is conclusive evidence that anything much is wrong - obviously if the plants get worse ie more new leaves come out a funny colour, then post again please.

Thanks for that.

[nickdub]

You're very welcome - sometimes young plants get a bit out of whack when the roots can't quite cope with supplying what the leaves want or whatever - usually they correct themselves - impossible to be sure of course, but that's what your photo looks like to me .

Happy gardening :-)

[It never rains..it pours]

If you have some floating about you could feed them miracle grow + epsom salts (no magnesium in MG) and see if improve like I did the tomato and tend to do to anything sick looking as a last chance saloon