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 […]

Scientists Discover How Bollworm Becomes Resistant to Bt Crops

Bt crops are plants that have been genetically-engineered to produce proteins that are harmless to humans but are toxic to some devastating insect pests. The proteins are produced by genes from the bacterium Bacillus thuringiensis (Bt) that have been inserted into the crops. These same Bt proteins have been used by organic farmers for more […]

JIPM Offers Rice Growers a New Resource Against the Rice Water Weevil

The rice water weevil, Lissorhoptrus oryzophilus, is the most harmful insect pest of rice in the United States, causing yield losses of up to 25 percent. Adults inflict damage by consuming leaf tissue, and the larvae feed on the roots of rice plants. A native of the southeastern U.S., the rice water weevil invaded Japan […]

Beneficial Insects and Nematodes are not Harmed by Genetically-modified, Insect-resistant Plants

A large body of literature has shown that genetically-modified plants that produce proteins from the bacterium Bacillus thuringiensis (Bt) to protect themselves from insect pests have little to no effect on a wide range of nontarget insects. However, concerns about Bt crops still exist. Now two new studies using more exacting methods show that Bt […]

First African Study on Biodiversity in Genetically Modified Maize Finds Insects Abundant

Previous studies from China, Spain, and the United States on genetically modified (GM) rice, cotton, and maize have concluded that the biodiversity of insects and related arthropods in GM crop fields was essentially the same as that among conventional crops. Now a new study from South Africa shows similar results. The study is described in […]