Filtering by tag: Field Crops ✕

Considerations for Fungicide Applications in North Carolina Corn

Current Situation in North Carolina Corn is currently at the tasseling and silking stages across the state, which is typically the time when fungicides are applied to manage foliar diseases. Gray…

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…

picture from left to right of soybean, corn, and tobacco in circle with sky on top half and soil with roots from corn plant on bottom half and the works root cause reports in white in brown block and -statewide collaboration- in brown letters under the bl

Root Cause Reports: One Month In, and Growing

It’s been one month since the launch of Root Cause Reports!From seedling diseases to deer damage and stink bugs, we’ve been tracking and sharing real-time crop issues from across the state, bringing…

Corn leaf with eyespot symptoms showing small, clustered, tan spots

Dichotomous Key for Identifying Corn Leaf Spot Disorders

Are the spots circular with tan centers and purple to dark brown margins, possibly surrounded by yellow halos? → Yes → Go to 2 → No → Go to 4 Are the lesions small, numerous, evenly distributed…

Picture of corn leaf with holcus spot lesions showing tan spot with yellow halo and dark green water soaked margins

Seeing Spots on Corn? It’s Likely Holcus Leaf Spot

With such a wet May, y’all are probably seeing an uptick in leaf spots on corn, but there’s no need for concern. It’s likely holcus leaf spot, a minor bacterial disease that typically shows up early…

Pciture of corn leafhopper with tan body and two black dots between its eyes

Corn Leafhopper and Corn Stunt Disease: See but Don’t Spray

The corn leafhopper (Dalbulus maidis) is a pest of corn that typically lives in warm places, such as areas near the coast in the southern United States. However, in 2024, it moved as far north as…

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

Yield Impact of Fungicides on Drought-Stressed Corn in 2024

Commercially available foliar fungicides (Table 1) were evaluated for their impact on disease and yield responses. Under favorable conditions for disease development (i.e., wet and humid weather),…

No image

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…

No image

Dealing With Ear Rots in Drought Damaged Corn

Damage from Fungal Infections and Ear RotDrought can significantly impact corn production in several ways. Early-season drought can cause stunting, poor nodal root systems, reduced ear size…