PULLMAN, Wash., Oct. 28 -- Washington State University issued the following news release:

MOUNT VERNON, Wash. -Washington produces more blueberries than any other U.S. state, but farmerssometimesstruggle to obtain honey bees to pollinate the plants and produce bountiful, delicious fruit.

That's in part because beekeepers are reluctant to provide bees to blueberry farms, given that there have been increased - and mysterious - bee colony losses after blueberry pollination.

Researchers, however, may have found a solution: a feed that shows promise for boosting the size of bee colonies.

"We don't know exactly why the losses happen, but fear has led some beekeepers to avoid blueberry pollination season entirely," said Lisa DeVetter, a profes...