New research confirms what many Midwest farmers have already suspected: The corn rootworm can develop resistance to varieties genetically modified to thwart the pest. Here, rootworm damage in an Iowa field ruined a corn crop.
After a long battle with corn rootworm, Midwest farmers thought they’d found relief in genetically modified seeds engineered to produce toxins deadly to the pest. But recent research confirms what farmers have been noticing for several years: the western corn rootworm has been evolving to outwit the technology.
Insect scientists say biotech corn is losing its ability to fend off a major insect pest known as the corn rootworm. The scientists say continued widespread use of genetically-modified corn will only make the problem worse.