Filtering by tag: Pest News ✕

Map of North Carolina with pins showing the trial locations

Bt Corn and Refuge: Smart Planting for Long-Term Success

Article by Alexis Alsdorf, NC State Department of Entomology and Plant Pathology PhD studentHelicoverpa zea (corn earworm or bollworm) is a common pest that feeds on many crops, including corn and…

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Insecticide Ratings for Corn

Every year, entomologists from the National Cotton States Arthropod Pest Management Working Group are polled on insecticide efficacy. This group consists of university Extension entomologists across…

Caterpillar crawling across yellow corn kernels

Maximizing Corn Yields: Bt vs Non-Bt Hybrids in Statewide Large-Plot Trials

Bt corn growers are required to plant 20% of their total corn acres to non-Bt corn for resistance management. An important question is do growers lose yield on the 20% of the acres they plant to…

Greenish-brown caterpillar crawling on yellow corn kernels

Concerns About Corn Earworm in Field Corn

As I mentioned in a soybean article, corn earworms are early this year, populations are high, and moths are flying. A lot of growers, curious about how their corn might have pollinated after this…

Brown shield-shaped stink bug on soil at the base of a green plant stem

New Resource Available- Stink Bug Scouting Guide for Field Corn in the Southeastern US

Thanks to the generous support of the Corn Growers Association of North Carolina, and the USDA CCPM program, we have learned a lot about how to manage stink bugs in corn. We recently revised our…

Graph showing difference in yield among three non-Bt hybrids across 5 years at the Tidewater Research Station

Non-Bt Hybrid Performance in the 2023 OVT

I’ve written previously about why North Carolina corn growers should feel comfortable planting non-Bt refuge corn, but the performance of non-Bt hybrids in the 2022 OVTs and 2023 OVTs adds one more…

NC State University bar chart: Bu/A yields for DKC hybrids with group letters a–e

Reasons Why You Should Plant Non-Bt Corn

Bt corn has been genetically modified to make insecticidal proteins that protect plants from caterpillars and some root-feeding beetles. In our region, growers pay an average of around $35 more for a…

Bar chart: DKC non-Bt hybrid #1=201, #2=187, #3=177 BU/A+ with error bars.

Non-Bt Hybrid Performance in the OVT

I've written previously about why North Carolina corn growers should feel comfortable planting non-Bt refuge corn, but the performance of non-Bt hybrids in the 2022 OVTs adds one more reason to the…

Bar chart of Bu/A yields for corn hybrids (DKC67-44 to DKC65-93) with NC STATE UNIVERSITY

Why You Should Plant Non-Bt Corn Refuge in the Southeastern U.S.

Bt corn has been genetically modified to make insecticidal proteins that protect plants from caterpillars and some root-feeding beetles. In our region, growers pay an average of around $35 more for a…

Partially husked corn ear with damaged kernels and small caterpillars among the silk

Corn Earworm Populations Are Heavy in Corn. What Does That Mean for Cotton and Soybean?

Corn earworm (aka bollworm, podworm, tomato fruitworm) populations are much higher in corn than usual. Corn is a nursery crop for this pest and high populations in corn generally mean high…