[Sidney Pink]

Is it a good idea to use slurry from my neighbours slatted shed as a feed for various plants in the polytunnel?

[tagwex]

NOOOOOOOO.
Way too rich. Use stuff that is years old.

Having said that you could possibly use a small amount with lots of added water to dilute it. Others here might advise you better.

[kindredspirit]

Yep, as Tagwex says, far too strong.

[Blowin]

SP - You'd obviously LIKE to take advantage of a free offer, who wouldn't, so you might like to try this.

'Plants' usually mean young ones and, by definition, this implies the root stock won't be too well established. So, you could use a crow bar to make a good deep hole alongside each plant - above it if there's a slope to the ground - and fill that with the slurry. Natural rainfall and worm activity will deal with it before the roots get to it so that it isn't too rich. I do this with pelleted fertiliser and don't experience any problems but the nutrition is right where the plant will need it.

Having said that, I notice the farmers spray it neat on their grazing fields and it doesn't kill the grass (or any of the resident weeds for that matter) but, if you'd rather play safe, you could always put a good quantity between rows of spuds, brassicas etc. that have a good space between rows. Nature will do its work.

[Sidney Pink]

Thanks for your advise all.I supose if was the way to go I would have heard about others using it at this point.