Bt itself is widely used as an insecticide, mostly by organic farmers. Because the Bt-producing crops kill some key pests, farmers spray less insecticide to control those pests.

Since then, a host of studies have quantified the benefits—in pesticide use, yields, and insect resistance—of so-called Bt maize compared unmodified corn. In a study released this week (March 12) in ...

Bt-enhanced corn was developed to fight the European corn borer, which as the No. 1 pest of corn causes losses each year exceeding $1 billion in the United States. Bt corn uses a portion of the genes ...

A new way to combat resistant pests stems from discovering how the widely-used natural insecticide Bt kills insects. Figuring out how Bt toxins punch holes in the cells of an insect's gut was the ...

A new study published in the Journal of Economic Entomology suggests that Bt sweet corn is better for the environment because it requires fewer pesticide applications than conventional corn.

The question isn't whether Bt corn itself is safe, University of Maryland researchers say. "Safety of Bt corn and other GMOs has been tested and proven extensively, but this study is about ...

The more things change, the more they stay the same, as a Dec. 29 Associated Press report on genetically engineered corn notes. Like déjà vu, this news story on emerging resistance to Bt toxin ...

Question: Tiny caterpillars have shredded the leaves on my hardy hibiscus both this year and last. I sprayed with Bt insecticide but it didn't help. Any suggestions? Phyllis D., Tulsa ...

A study of GMO cotton varieties shows they disrupt an important beneficial soil fungus, writes Eva Sirinathsinghji, apparently due to the Bt insecticide they are engineered to express. Disruption ...

L O N D O N,   Dec. 2 -- U.S. scientists said today they had uncovered what could be either a potential hazard or benefit of genetically modified (GM) corn. Dr Guenther Stotzky and ...

Pesticide use is surging among U.S. farmers who are worried about insect resistance to Bt corn. But scientists warn that overuse of chemicals may create a worse problem down the road.

MANKATO, Minn. -- If a farmer cuts costs on corn foliar fungicides and Bt (Bacillus thuringiensis) insecticide treatments, will it cost them later in rootworm and corn borer damage?