Picture posting is enabled for all :)
A cubic metre really isn't ernough manure for that area, especially if you are trying to play catch up with the soil..... If you're anywhere near Swindon I don't moind dropping some off through the winter.... otherwise, I guess, targetted compost is the best way to go.... see if you can get council recycling compost delivered.... generally there's a fixed charge for delivery but the compost costs almost nothing,,,, or find a guy with a trailer who's well into you, pretend that you'll put out in exchange for haulage, let him down gently. after the delivery.....
I am in Brittany in France
weeds grow fine!
For the root veg - the beetroot seeds germinate OK, the carrots not very well, and I did sow them April/May when it was pretty warm. Then the carrots even after a few months are only as thick as a biro and about 10 cm long :( :( I just chuck them out. I grew them in soil where I had dug in sand and a few handfuls of all purpose fertilizer (organic quality). Obviously that is not appropriate.