Filtering by tag: corn earworm ✕

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…

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…

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…

Dried corn stalks forming a narrow path through a late-season field

Non-Bt Hybrid Yield Trial Results and Why You Should Plant Non-Bt Corn as Resistance Insurance

All growers who plant Bt corn in North Carolina are required by law to plant non-Bt corn (refuge). Details are specified on the bag tag, but non-Bt corn must represent at least 20% of the total corn…