In article , Colin Malsingh
writes
Thanks to everyone for your advice.

Since the tomatoes have been *very* productive this summer, I will cut
my losses and uproot them.

I don't really have the luxury of keeping this family of plants away
from the plot for 4 years, so will rotate next year but may have to
return in due course.

My suggestion about having a four year gap from the solanum family was
made because you already have evidence of blight in the plot and that
would be one way to eliminate it. Any steps you can take to break the
disease cycle would be helpful. When you have cleared this year's
tomatoes and the potatoes you could consider sowing a green manure
there, digging in the herbage before any seeding occurs. That could then
be followed next spring by a non-solanum crop, i.e. roots, onions,
cabbage or salad greens etc. then a complete rest from cropping over the
following winter.
--
Alan & Joan Gould - North Lincs.