Corn rootworms can pack a one-two punch. The larvae can burrow in soil and feed on unsuspecting corn roots, or the adult beetles can snip silks and upend pollination. Both infiltrations result in ...

AMES — Western corn rootworm resistance to Bt corn is increasing, and if farmers hope to maintain Bt traits as tools, they need to diversify their management, said Aaron Gassmann, Iowa State ...

Corn that contains proteins that protect it from insect damage has been grown in the U.S. since the mid-1990s. Known as Bt corn, because the proteins are derived from a bacterium called Bacillus ...

AMES, Iowa — Corn rootworms have been managed with crop rotation but some Northern and Western corn rootworms have adapted to corn-soybean rotations, says Jon Tollefson, chairman of the Iowa State ...