carrots, radish, turnips and lettuce

[hawthorns]

in the spring i am going to grow carrots, radish, turnip and lettuce in home made wooden rectangle troughs would it be better to fill them with compost or soil.

feed up with the slugs eating them in the ground

[moggssue]

Don't know which would be best to fill your troughs with, but I would say stick a band of copper tape around them to keep the slugs off Hawthorns!

[Cutecumber]

If you have beautiful, stone-free, weed seed free loam for soil, use that.

Otherwise, use compost.

[Snadger]

in the spring i am going to grow carrots, radish, turnip and lettuce in home made wooden rectangle troughs would it be better to fill them with compost or soil.

feed up with the slugs eating them in the ground

The four veg you have mentioned are not gross feeders and none of them like much fertiliser.
Old growbag compost would suffice or you could make your own john Innes type compost by using sand, garden soil and peat/coir etc.
I just mix mine up til it looks right and will hold water reasonably well.

[hawthorns]

thanks snadger

grand advice

[hawthorns]

7 parts loam, 3 parts peat , 2 parts sand would you add any bone meal to this