Odd potato plants?

[Ja9]

Does any body have any idea why 3 of my potatoes look as though they are not thriving like the others. Same variety. Similar thing happened last year and the plants shrivelled and I only harvested small potatoes from them. Any help appreciated please

[chris]

Did you plant/dig in manure by any chance?

Have you used weedkiller, or know of anyone near by that has?

[Ja9]

Yes I did use manure but all along the trench and the other plants look fine.I'm sure that a similar thing happened last year when I didn't.Does this look typical of weed killer then?its not something I use.Its in a garden plot,so no one near by.

[WendyC]

Is there any sign of rot on the stem where it emerges from the soil?

[Ja9]

I'll check..later,as pouring with rain now

[Bigmallly]

Could it possibly be this:

Leaf Roll Potato Virus

[Bill HH]

Are the affected plants in the same spot as the ones from last year?

[meteor]

I'm with Bigmallly on this one, it looks like leaf roll virus to me too.

[Greenleaves]

Could it be weevil larvae?

[Ja9]

Bigmally that certainly sounds a possibility. I always rotate the crops so not the same site. Remember last year that the plants went brown.the seed potatoes from a reputable stockist ( I thought) Bet the volunteers on the compost heap grow without any problem!
Actually have found the odd vine weevil larvae in the beds and chucked them to the chickens.