First resistant corn rootworms found in the USA

There are indications in the USA that the Western corn rootworm could develop resistance to genetically modified Bt maize. Scientists in Iowa,… more

Bt plants: Good resistance management means no resistant pests

To the astonishment of many practitioners, the Bt concept is still effective 15 years after it was first commercialised. So far, hardly any… more

Resistant pests found in India

Scientists working in the Indian state of Gujarat have discovered resistant pests in Bt cotton fields. Indian experts are now calling for m… more

USA: ‘Superweeds’ encouraged by GM plants?

Farmers in the US are increasingly facing problems with weeds that have developed resistance to certain herbicides. A recent study blames t… more

Genetically modified Bt maize in the USA: Resistance management under fire

Not all farmers in the USA appear to be complying with the resistance management requirements for genetically modified Bt maize. A consumer… more

Genetically modified oilseed rape in Canada: Taking stock after ten years of cultivation

Although genetically modified oilseed rape is not yet grown in Europe, it now accounts for just under 90 percent of the total oilseed rape … more

Time for adjustments?

After many years of the use of pesticides it is a well known fact, that insects are able to evolve resistance against insecticidal agents. … more

Cotton pest develops resistance to Bt plants: “evolution in action”

For more than ten years, millions of hectares of genetically modified maize and cotton plants have been planted worldwide. Apparently for the … more

No resistant pests

Despite extensive cultivation of Bt plants in the USA, it appears that no pests with resistance to the Bt toxin have yet emerged. This was the… more

“It all depends on whether the new traits confer an advantage.”

Against the background of the possible cultivation of genetically modified plants, British agro-ecologists have produced a study on outcros… more