Rules on Modified Corn Skirted, Study Says

As many as 25 percent of the American farmers growing genetically engineered corn are no longer complying with federal rules intended to maintain the resistance of the crops to damage from insects, according to a report Thursday from an advocacy group. The increase in farmers skirting the rules, from fewer than 10 percent a few years ago, raises the risk that insects will develop resistance to the toxins in the corn that are meant to kill them, the report says. And it raises questions about whether the Environmental Protection Agency and the agricultural biotechnology industry are adequately enforcing the rules. The crops in question, called BT corn, have bacterial genes spliced into their DNA that cause the plants to make toxins that kill certain insects when they feed on the crop. In 2008, about 49 million acres of BT corn was grown, accounting for 57 percent of domestic corn acreage. So far there appears to be little sign that insects are growing resistant to the toxins in the corn. If they were to, however, it would not only render the crops ineffective but would hurt organic farmers who use sprays of bacterial BT toxins as natural pesticides...read more