Pest resistance to genetically engineered crops Bt crops is evolving faster now than before, researchers show in the most comprehensive study to date. But as expected from evolutionary theory ...

Dozens of studies monitoring how pests have responded to Bt crops have created a treasure trove of data showing that resistance has emerged in a few pest populations, but not in most others.

Pest populations also harbor rare genes that confer resistance to Bt. Scientists are trying to delay pest resistance to Bt crops, but progress has been stymied by lack of information about the ...

In these 16 cases, pests developed resistance in about five years on average. “A silver lining is that in 17 other cases, pests have not evolved resistance to Bt crops,” Tabashnik said, noting that ...

Scientists report pest-resistant crop. ... Bt is used as an insecticide derived from the spores and toxic crystals of the bacteria Bacillus thuringiensis. Sold since 1960, it is considered to be ...

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 ...

“This is really the first field test of a resistance-management strategy for a Bt crop,” says Anthony M. Shelton of Cornell University. Starting in 1995, the Environmental Protection Agency ...

When susceptible pests munch on these “Bt crops,” they get poisoned. But insects that have developed resistance to Bt toxins can live on undeterred, and that resistance is growing. “When Bt crops were ...

Steady exposure has prompted concern that pests will develop resistance to these proteins, making Bt plants ineffective. Cornell research shows that the combination of natural enemies, such as ...

One of the nation's most widely planted crops - a genetically engineered corn plant that makes its own insecticide - may be losing its effectiveness becaus... SEARCH. English.

Pest resistance to genetically engineered crops Bt crops is evolving faster now than before, UA researchers show in the most comprehensive study to date. But as expected from evolutionary theory ...

Cases of pest resistance to GE crops increased by more than fivefold in the past decade TUCSON, Ariz. — In 2016, farmers worldwide planted more than 240 million acres (98 million hectares) of ...