Hi Bill & all
Sorry for the delay in replying... local server problems.
Copper gluconate is not one of the dead horses. I reckon we have not yet
learned to make use of it's features to best effect.
I reckon that in binary combination with other chemicals and/or as part of a
multipronged approach there is some mileage to be had.
Like so many other little niggles, this is another that requires proper
testing.
Best Regards & 73s... Dave Cushman, G8MZY
Beekeeping & Bee Breeding Website...
http://website.lineone.net/~dave.cushman