Cotton and corn are threatened by growing resistance in the pest Helicoverpa zea (a.k.a. bollworm or corn earworm) to the insecticidal properties of Bt crops. Two researchers identify contributing factors and identify insecticide resistance management practices that could help slow the problem.
A new study of 40 years' worth of data from the mid-Atlantic region of the United States finds that widespread adoption of insect-resistant Bt corn has reduced pest damage and the need for insecticide applications in offsite, non-Bt crops such as pepper, green beans, and sweet corn, as well.
By Andrew Porterfield The fall armyworm (Spodoptera frugiperda) is a major corn pest in South America, known to devour corn crops from Argentina to the Southeastern United States. Farmers have […]
Add “crop pests developing resistance to control methods faster” to the list concerning potential effects of global warming. Entomologists at the Environmental Protection Agency (EPA) and the University of Maryland […]