News From Extension Plant Pathology

Snow-covered brick stairway with lamp posts and trees in a winter park
PDIC Adverse Weather Closure

Published - January 23, 2026

From: Plant Disease and Insect Clinic
Fresh market tomatoes
2026 Fungicide Guide for Tomatoes in North Carolina

Published - November 25, 2025

Rows of young strawberry plants on black plastic mulch in a field
Fall Fungicide Recommendations for Root Rot Control in Strawberries

Published - October 15, 2025

From: Strawberry Growers Information
Image not available
Updated Post-Planting (Fall 2025) Recommendations for Managing Neopestalotiopsis

Published - October 7, 2025

From: Strawberry Growers Information
Late blight on tomato fruit
Reports of Late Blight on Tomato in WNC (8/8/2025)

Published - August 8, 2025

Cucumber downy mildew
Cucurbit Downy Mildew Found 7/30/2025 in Haywood County

Published - July 30, 2025

picture of silk from corn ear
Considerations for Fungicide Applications in North Carolina Corn

Published - June 23, 2025

From: Corn
Corn leaf with eyespot symptoms showing small, clustered, tan spots
Dichotomous Key for Identifying Corn Leaf Spot Disorders

Published - June 12, 2025

From: Corn
Figure 1. Symptomatic concentric lesions on pepper fruits caused by Colletotrichum species.
Be on the Lookout for Pepper Anthracnose Caused by Colletotrichum Scovillei

Published - June 12, 2025

Cucumber leaves showing yellow chlorotic spots and pronounced veining
Downy Mildew Confirmed on Cucumbers in Eastern North Carolina

Published - June 11, 2025

Figure 4. TSWV necrotic symptoms
New Factsheet: Managing TSWV and Thrips in Tobacco

Published - June 6, 2025

From: Tobacco Growers Information
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

Published - June 3, 2025

From: Corn
Botrytis blight on petunia
Ornamental Growers: Interested in an Educational Conference in NC?

Published - May 13, 2025

Fig. 1: gummy stem blight leaf spots on watermelon leaves and cotyledons (Photo: Erin Eure, NC State Extension)
Gummy Stem Blight Detected in Watermelon Transplants in North Carolina

Published - May 2, 2025

Galls and bumps on a sweetpotato storage root caused by root-knot nematodes (particularly, the guava root-knot nematode, Meloidogyne enterolobii).
Nematicides New and Noteworthy: Label and Registration Updates for Nematicides in Sweetpotato

Published - April 28, 2025

Soil sampling
NCDA Offers FREE Soil Testing & Services for WNC Through June 2025

Published - March 27, 2025

2025 SE Veg Crop Handbook
2025 SE Vegetable Crop Handbook

Published - March 17, 2025

Tomato flowers with bee
2025 North Carolina Fungicide Guides for Tomato and Pepper

Published - February 17, 2025

Target spot symptoms
2024 Fungicide Programs for Target Spot in NC Flue-Cured Tobacco

Published - February 4, 2025

From: Tobacco Growers Information
Petunias in a greenhouse
2025 Fungicide Guide for Herbaceous Ornamentals in the Greenhouse, Nursery, & Landscape

Published - January 31, 2025

Field rows of mature cotton plants with white open bolls along a dirt path
Foliar Fungicide Impact on Cotton in 2024

Published - November 20, 2024

From: Cotton
Cucumber downy mildew symptoms
Cucumber Downy Mildew Found, Haywood County, August 13, 2024

Published - August 13, 2024

Hand holding corn ear with clustered, fused grayish kernels and corn silk
Comprehending the Changing Colors of Corn Leaves

Published - July 22, 2024

From: Corn
Cardboard box labeled "Turf Diagnosis Sample Please Rush" in black marker
Turfgrass Disease Diagnosis: A Bit of Science and a Lot of Art

Published - July 19, 2024

From: Turf Pathology
Featured image: Cucumber leaf with downy mildew lesions and sporulation under a hand-held microscope for diagnosis (Photo credit: Lina Quesada)
Cucumber Downy Mildew Found in Sampson County in North Carolina

Published - June 5, 2024

The chart titled "Curative Suppression of Dollar Spot with Fungicides" from NC State University displays the percentage of dollar spot per plot over time, from May 13 to May 31. It compares six treatments: Secure, Maxima, Posterity, Daconil Ultrex, Chipco
What Is a Fungicide? That Is the Question!

Published - May 21, 2024

From: Turf Pathology
Composite photograph of guava root-knot nematode damage on sweetpotato. On the left side are two photos of storage roots with galls caused by GRKN. On in the middle is GRKN galls on a sweetpotato fibrous root. On the right is a sweetpotato with skin peele
Guava Root-Knot Nematode: 2024 Emergency Management Recommendations for Sweetpotato Producers

Published - May 9, 2024

Composite photograph of guava root-knot nematode damage on sweetpotato. On the left side are two photos of storage roots with galls caused by GRKN. On in the middle is GRKN galls on a sweetpotato fibrous root. On the right is a sweetpotato with skin peele
Guava Root-Knot Nematode: 2024 Emergency Management Recommendations for Sweetpotato Producers

Published - May 6, 2024

From: Sweetpotatoes
Botrytis blight on petunia
Fungicide Resistance in Botrytis: A Reminder for Floriculture Crop Producers

Published - March 19, 2024

Credit: A. Dombrovsky, O. Batuman, Fidan et al. (2019) and Luria et al. (2017)
Virus-Infected Tomatoes May Be Prevalent at Grocery Stores

Published - March 19, 2024

Tomato fruit
57th Annual Winter Vegetable Conference & Trade Show-February 19-20, 2025

Published - December 1, 2023

From: Vegetable Production
Wicker cornucopia with apples, banana, mango, tangerine and a multicolored wooden turkey decoration
PDIC Holiday Closings 2023

Published - November 15, 2023

From: Plant Disease and Insect Clinic
Ear of dried corn with white fuzzy mold on kernels and dried husks
The Three S's Approach to Tackling Corn Ear Rots

Published - September 27, 2023

From: Corn
Golf putting green showing multiple circular brown turf damage patches
Why Should You Love Soil Temperatures When Managing Bermudagrass Diseases?

Published - September 12, 2023

From: Turf Pathology
squash leave with disease symptoms
Squash Downy Mildew found in Clayton N.C.

Published - August 31, 2023

Tomato fruit
Tomato Late Blight Found in Henderson County, NC (7 Aug 2023)

Published - August 8, 2023

Cucumber downy mildew
Cucurbit Downy Mildew in Haywood County, July 28, 2023

Published - July 28, 2023

Fresh market tomatoes
WNC Vegetable Growers: BOLO for Tomato Late Blight & Cucurbit Downy Mildew

Published - July 21, 2023

underside of cucumber leaf
Cucumber Downy Mildew Found in Lenoir County in North Carolina

Published - June 22, 2023

Symptoms of ToBRFV on tomato fruit
Tomato Seed Recall for Tomato Brown Rugose Fruit Virus

Published - May 15, 2023

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