There was, for many years, the idea of planting your early potatoes through
Black polythene by cutting a cross through the sheet and putting the potato
just under the soil, and then putting a handful of soil over the cut. this
way you would plant 3 rows in the space of 2.
When it came to harvest you just lift the side of the sheet and pick out a
few large potatoes then tuck the sheet down till next lot are wanted.
You could get almost twice the crop per Sq.yard this way.
And it worked

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk