Hello Al & All,
Al wrote:
 This  is a good thing since so many very nasty insecticides, fungicides,
and
 herbicides are sprayed on potato fields. Imidacloprid, to my knowledge, =
 is  the only in-furrow pesticide used here and it does not pose any obvious
 problems until the clover rotation comes around in year 3. Then bees begin
to die...especially during the winter following the clover.

Would a possible solution for the Clover problem be for the grower to plant
a green manure crop the bees don't work?
Sincerely,
Bob Harrison
Odessa, Missouri