help with potatoe problem

[Royboy]

Hi
In the last couple of days my early pot's have developed a dark staining to the leaves and have drooped badly. Today the same has happened to my maincrop.
Is it potatoe blight and if so, what action do I take?
They art in canvas bags, the type you see advertised as potatoe grow bags, in organic vegetable compost and earthed up with farmyard manure.
Any help appreciated

[DavidT]

Not blight Roy, frost/cold. Earth them up or cover with fleece overnight.

[Royboy]

Thanke Dave, after reading potatoe disease websites I panicked and have cuts the stems down to the soil, will they still develop??

[GreenHouse]

It's too early for blight Roy, as David has said, just fleece them if frost is forcast. As for the ones you have cut, leave them & see if any more shoots grow.