PPFS-OR-W-11: Juniper Twig Blights

Nicole Ward Gauthier, Carrie Spry | Mar. 29, 2021 (Major Revision)

Twig and branch dieback is a common sight in many juniper plantings in Kentucky. While other factors can cause these general symptoms, two fungal diseases are frequently responsible for the dieback.

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PPFS-GH-3: Fungicides for Management of Diseases in Commercial Greenhouse Ornamentals

Nicole Ward Gauthier | Mar. 25, 2021 (Minor Revision)

This guide is a decision-making tool to help growers select fungicides from different chemical classes (FRAC). Additional information can be found in a number of UK Cooperative Extension Service publications or by contacting county Extension agents.

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PPFS-FR-S-5: Strawberry Anthracnose Fruit and Crown Rot

Nicole Ward Gauthier, Shawn Wright | Mar. 22, 2021 (Major Revision)

Anthracnose can be a serious problem in Southern and Midwestern strawberry plantings. The disease may appear as a fruit or crown rot, both of which severely reduce plant stands and yields. Fruit rot, the most common form of anthracnose, appears as fruit begins to ripen in late spring. Crown rots, on the other hand, can develop in young plants soon after planting or when weather warms in spring.

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PPFS-OR-W-14: Fungicides for Management of Landscape Woody Ornamental Diseases

Nicole Ward Gauthier | Mar. 20, 2021 (Minor Revision)

This guide is a decision-making tool to help growers select fungicides from different chemical classes (FRAC). Additional information can be found in a number of UK Cooperative Extension Service publications or by contacting county Extension agents.

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PPFS-AG-C-11: Drone Fungicide Applications in Corn

Ricky Arnett, Pat Hardesty, Nick Roy, Kiersten Wise | Mar. 12, 2021 (New)

Foliar fungicide applications occur commonly in corn to manage foliar diseases such as gray leaf spot. University of Kentucky research indicates that the most effective application timing for both foliar disease control and yield benefits is at tasseling/early silking (VT/R1). Because of the height of corn at this growth stage, these applications are typically applied aerially, with fixed wing or helicopter aircraft. However, many Kentucky fields are small, surrounded by trees or other obstacles to aircraft, meaning that fungicide application is not an option in these areas.

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PPFS-AG-C-2: Seedling Diseases of Corn

Carl Bradley, Kiersten Wise | Mar. 8, 2021 (Major Revision)

Corn seeds and seedlings are susceptible to infection by a number of soilborne fungi. When planted into cool, wet soils, seeds may decay before or after germination. Affected plants that survive past the seedling stage may go on to produce an ear if nodal roots develop normally, although stunting and reduced ear size can occur as a result of seedling diseases. Severely affected plants may die during stressful weather as the result of an inadequate root system.

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PPA-50: Drone Fungicide Applications in Corn

Ricky Arnett, Pat Hardesty, Nick Roy, Kiersten Wise | Mar. 5, 2021 (New)

Drone technology has improved in recent years and has also become more accessible. In Kentucky, commercial drone fungicide application is now an option in several areas. Drones specifically designed to apply products can potentially be used to apply fungicide in fields that are not accessible to other aircraft. This publication describes experiments to determine if drone fungicide applications can reduce foliar diseases in corn and discusses factors to consider when using drone technology to apply fungicides.

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ID-230: Blackpatch of Forage Legumes: Cause of Slaframine Toxicosis or "Slobbers" in Animals

Michelle Arnold, Shane Bogle, Bob Coleman, Ray Smith, Kiersten Wise | Mar. 5, 2021 (Major Revision)

Blackpatch is an important fungal disease of forage legumes in Kentucky. A metabolite produced by the fungus can result in slaframine toxicosis or "slobbers" in many animals. The fungal disease was first reported in Kentucky in 1933 on red clover. Most Extension literature associates blackpatch and slaframine with red clover, which is very susceptible to the disease. However, many forage legumes including alfalfa can be infected by the causal fungus.

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PPFS-AG-C-10: Northern Corn Leaf Blight

Nolan Anderson, Carl Bradley, Kiersten Wise | Feb. 15, 2021 (New)

Northern corn leaf blight (NCLB) is a significant foliar corn disease in Kentucky. This disease has been damaging in the United States Corn Belt since the early 1900s, but has increased in severity and prevalence throughout the U.S., including Kentucky. This publication describes the symptoms and signs of NCLB, conditions that favor disease development, and management methods to reduce impact on yield.

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PPFS-OR-T-13: Managing Spring Dead Spot in Bermudagrass

Paul Vincelli | Feb. 4, 2021 (Major Revision)

Spring dead spot is the most destructive disease of bermudagrass in Kentucky. The most serious outbreaks occur under high maintenance conditions; e.g., high nitrogen fertility, low mowing height, and frequent traffic. Moderate to severe outbreaks can occur under low-maintenance conditions as well.