Common Corn Pest Presents Major Challenge to Bt Crops

fall armyworm

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 typically battled the worm’s infestation with chemical insecticides, but they have been met (unsurprisingly) with resistant insects. Transgenic corn raised to express Bacillus thuringiensis (Bt) […]

How Climate Change May Accelerate Corn Earworm’s Resistance to Bt Crops

corn earworm larvae

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 have collaborated on an analysis of two decades’ worth of agricultural and pest management data from the state of Maryland to explore the interplay of […]

Bed Bugs Show Early Signs of Resistance to Chlorfenapyr and Bifenthrin

bed-bug-cdc

Pest management professionals battling the ongoing resurgence of bed bugs are wise to employ a well-rounded set of measures that reduces reliance on chemical control, as new research shows the early signs of resistance developing among bed bugs to two commonly used insecticides. In a study published this week in the Journal of Economic Entomology, […]

Setting a Baseline: A Clearer View of Mosquito Resistance to Insecticides

Culex pipiens

By Andrew Porterfield Mosquito control professionals have made significant gains toward managing malaria worldwide, as well as defending against West Nile virus, chikungunya, dengue, St. Louis encephalitis, and, more recently, Zika. However, mosquito resistance to existing insecticides also has been making gains. According to the World Health Organization, 60 countries have reported some mosquito resistance […]

Pests Can Evolve Resistance to Many Types of Control Methods, Not Just Chemicals

By Richard Levine Agricultural pests, such as insects and weeds, can be incredibly adept at developing resistance to control methods. When you mention the word “resistance,” most people probably think of pests becoming resistant to certain chemicals — weeds becoming herbicide resistant, or insects becoming resistant to insecticides, for example. However, there are many other […]