Yellow Potato leaves

Dear all,

i have noticed that with some of the leaves of the potatos that i have planted have turned yellow, can anyone advise what this means and if there is any solution to it?

 

There are more expert people than me here, but one cause could be magnesium deficiency. I cured yellowing leaves one year this way........

cheers,
Dave

 

It could also mean that the potatoes are ready for harvesting! When were they planted?

 

They were planted just under 2 months ago, there are larger plants in my crop that still have green leaves

 

Not ready for harvesting then. Might be just in need of food and water as Dave says.