Hi:
According to Frank C. Pellet, American Honey Plants(1977 pgs. 323-324), and
John B. Free, Insect Pollination of Crops (1993 pg. 402)  poppy pollen is
worked by bees for pollen.
Pellett, p.178, states that hazelnut produces some pollen and is valuable
where there is a scarcity of early pollen producing plants.
Jane Ramsay, Plants for Beekeeping in Canada and the northern USA... (1987,
p.78), indicates that hazelnut pollen is poor in protein content. She also
notes on p.58 that although bees are highly attracted to poppy pollen, it
may have a narcotic effect on the bees, with opium poppy being the cause of
serious mortality of foraging bees.
None of the references indicate any "commercial value", unless one considers
poor protein content or mortality of foraging bees.
Hope this is of some help with the questions.
Keith
Grimsby, Ontario