Yellow lower leaves on potatoes

[Ru1]

I was wondering if I can get some help.

I have lost most of my early and second early plants over the last month to blight.

The main crop have looked OK, until I noticed some of the plants have the lower leaves going yellow.

There isn't any sign of Blight or blackleg.

Therefore, could there be a deficiency of some sort?

Thanks for your help

[Ru1]

[Ninnyscrops.]

I've been up and looked at my maincrop today and similarly have the same. I think as they are maincrop and the flowers are now seedheads, the lower leaves a) may be overshadowed by the top growth and/or b) naturally die back as they have done their job.

Hope it's not blight for you.

Ninny

[MervF]

This week I took off the haulms on my Desiree and Picasso due to blight.   The Sarpo Mira, which have a higher resistance to blight, are fine but I noticed the lower leaves were yellowing.   I think they done the same last year and were a good crop.   I am sure they will be fine if the rest of the haulms are still green.

[Ru1]

Thanks Ninny and Merv for replying.

Hopefully it's just natural die back (fingers crossed), as it doesn't look like blight.

Thanks for your help guys

Ruth