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Learn all about plant diseases of fruit, vegetables, and hemp. University of Kentucky Plant Pathology

University of Kentucky Plant Pathology Extension Specialist, Dr. Nicole Gauthier, shares information you can use in the form of publications, articles, photos, and research updates.

10/23/2026

Fusarium head blight on h**p has been confirmed on cultivars grown for grain and fiber, as well as for floral tissue (cannabinoid production). Losses result from combinations of direct yield impacts caused by blighting and reduction in crop value caused by mycotoxin contamination.
https://buff.ly/YwLlIVv

Fusarium head blight (FHB, also called scab in wheat and Gibberella ear rot in corn) is a serious disease of cereals and corn around the world. The disease also affects other cereal grains and gras…

10/22/2026

Fruit growers can experience postharvest crop losses from 25 to 50%. A significant percentage of postharvest losses are caused by plant diseases. Infection by disease-causing pathogens can occur in the field and/or through wounds during harvest. Even produce destined for fresh market can develop postharvest diseases during short-term storage.

Fruits are often soft, perishable, and particularly susceptible to a range of damage during harvest and storage. Growers can experience postharvest crop losses from 25 to 50%. A significant percent…

10/02/2026

Greenhouses and high tunnels allow growers to extend the vegetable growing season. However, many vegetable pathogens can overwinter in these structures. Elimination of disease-causing organisms reduces the need for fungicides and can improve the effectiveness of disease management practices. https://buff.ly/LcSuN5Q

09/28/2026

Fusarium head blight (FHB) is a common disease of h**p that poses a significant threat both to cannabinoid/flower and grain producers. The disease causes severe blighting of floral tissues that can result in direct yield losses and rejection by processors. The FHB causal fungi can also potentially contaminate harvested grain and flowers with mycotoxins that are harmful to humans and livestock.
https://buff.ly/3mctSvx

Fusarium head blight (FHB) is a common disease of h**p that poses a significant threat both to cannabinoid/flower and grain producers. The disease causes severe blighting of floral tissues that ca…

09/25/2026

Anthracnose diseases can severely reduce plant stands and yields in commercial and residential strawberry plantings. Disease may develop on blossoms, fruit, petioles, runners (stolons), leaves, and crowns; however, it is most destructive when fruit and/or crowns are affected. The use of cultural practices and fungicides can reduce fruit and plant losses.
https://buff.ly/u3JuzPr

09/11/2026

Sooty blotch and flyspeck, caused by a fungal complex, is a common cause for blemished, ugly apples. Sanitation, cultural practices, and fungicides all play roles in disease management.
https://buff.ly/z98UkZb

09/10/2026

Vegetable produce is often soft, perishable, and particularly susceptible to a range of damage during harvest and storage. Learn more about how to prevent losses at https://buff.ly/xxPL7ot

Vegetable produce is often soft, perishable, and particularly susceptible to a range of damage during harvest and storage. Growers can experience postharvest crop losses between 25% and 50%. A sign…

09/08/2026

Wet summer conditions have resulted in a rise in cases of Plectosporium blight in Kentucky pumpkin plantings. Plectosporium blight can be a major concern for pumpkin growers. Stems, leaves, and fruit can become infected, leading to plant decline and unmarketable fruit. Cultural practices and fungicides can reduce disease incidence.
https://buff.ly/FucOGLw

Wet summer conditions have resulted in a rise in cases of Plectosporium blight in Kentucky pumpkin plantings. Plectosporium blight, formerly Microdochium blight, can be a major concern for pu…

09/07/2026

The University of Kentucky Plant Pathology Extension Team for Specialty Crops has put together numerous resources for commercial organic producers. The following details resources available for plant disease management in organic vegetable production. https://buff.ly/EXSzvdE

09/04/2026

Neopestalotiopsis disease (also referred to as Neopest or Neo-P) is caused by a fungus that can infect both cuttings and mature plants. Symptoms can range from leaf spots to crown and root rots to fruit infections. The pathogen overwinters in debris and as melanized spores in soil. Once introduced to fields, it can survive 3 to 5 years.

https://buff.ly/KjQF9SE

Neopestalotiopsis disease (also referred to as Neopest or Neo-P) is caused by a fungus that can infect both cuttings and mature plants. Symptoms can range from leaf spots (Figure 1) to crown and ro…

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