Yellow plants

I have a few raised beds and I had a very poor season last year - mainly due to lack of time with work etc. I am better prepared this year and making a better go of it.
I started some beetroot off in my potting shed and then when a good size planted out about a week ago. North Lincolnshire.
The plants have all yellowed and look as if they are on death's door. They have had a nibble by slugs by the look of them.
I did not manure that bed but another bed nearby I covered in manure then put french beans in and they are also looking a little unhealthy and slightly yellow.
What I'm concerned about is the colour of them....do plants that are sulking due to being moved/ low temperatures go yellow or is it some defeciency in the soil?
Thanks in advance

Too early to put out French beans. My first sowings have only just germinated on the window sill and won't be going in the ground for a couple of weeks yet.