White dusty stuff on the peas?

I've got some sort of mould or fungi growing on the leaf of my peas...



it kind of comes off dusting/rubbing with a finger, but what is it and how do I KILL IT

Regards, Plant Potty.

 

Looks like powdery mildew? Dry weather can make it worse, keep the plants well watered and try mulching. There are resistant varieties available for future reference. I don't know about chemical controls, but sulphur dust/spray might help.
How near are the peas from cropping?

 

Sorry for delay, my mate is moving house so I've been putting up bunkbeds n stuff:DOH:

The peas are in different stages as I stagered the seeding, I've got a few that have finished so was gonna try some bicarb on them? they've had plenty of water!

Plant Potty.