Potato blight?

Hi, this is my second year at my allotment so I'm learning as I go along. Yesterday I found that two of my first early potato plants had brown patches on the leaves - they are at opposite ends of the row and the rest look OK. I assume it's blight - is my best course of action to dig them up and burn the plants or do chemical treatments work? Please help!

Pam

 

woah there!

its probably frost damage, what do they look like?

browny blackish - probably frost damage

browny purple ring - prob blight - also i thought blight comes late season

hang fire till a proper gardener sees this thread

loopy

 

Yeah i thought it was too early, considering it normally attacks tomatoes aswell (mine last year), and they are not even outdoors yet. OP, post pictures.

 

It must be frost damage surely

 

Sounds as though it is frost damage Pam .As long as it's just the tips of the top leaves the rest should be fine .

 

Pete's got it right I'm certain. Frost - particularly since the affected plants are at the end of rows where there will be less shelter provided by surrounding plants.

The critical periods for blight usually occur much later in the year. "Smith Periods" - i.e. when blight is likely to develop are periods where on 2 consecutive days the temperature has been =/> 10C and the relative humidity has been > 90% for at least 11 hours on each day.

Simples :thumb:

 

At least 3 months too early for blight. Definitely frost damage.:gnthb::gnthb:

 

Yup, frost damage :thumb:

 

A totally unnecessary panic then! Thanks everyone.

P