glass in ground.

I suppose the spud could form around the glass fragments, tatties more than onions. But a bit of a long shot.  Not sure about the fibre board.

Reminds me of a thread I read some time ago about an allotment with a damaged greenhouse and no tennant, the council sent in the workers and they removed the frame and then rotavated all the broken glass into the ground!

Take care.    Cheers,     Tony.

I'm sure that a lot of allotments have been used as dumps for stuff people couldn't get to the tip. Then someone comes along with serious gardening intent and has a major clearing problem. The local scrap man has done brilliantly off a couple of plots near mine over the last couple of years.

I dont think that bits of rubble will cause too many problems with the veg, apart from carrots maybe. I am just a bit ocd and have to pick out any i see, I worry more about cutting myself and tetnus etc, especially with shards of glass. My raised beds seem to have loads & plastic too as if previous owners have rotovated their recycling bin into the soil! If it was me I would remove as much as possible.