Blog Archives

Damping-off of Vegetables and Herbaceous Ornamentals (PPFS-GEN-03)

Commercial growers and homeowners who grow their own transplants from seed should be mindful of damping-off, a disease that can cause seeds to fail to germinate, as well as the collapse of seedlings and young plants.  Damping-off can occur on

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Northern Corn Leaf Blight (PPFS-AG-C-10)

Northern corn leaf blight (NCLB) is a significant foliar corn disease in Kentucky. It has been causing damage in the United States Corn Belt since the early 1900s, but has increased in severity and prevalence throughout the U.S., including Kentucky.

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Managing Spring Dead Spot in Bermudagrass (PPFS-OR-T-13)

Spring dead spot is the most destructive disease of bermudagrass in Kentucky. While this disease can occur regardless of how turf is managed, the most serious outbreaks occur under high maintenance conditions (e.g. high nitrogen fertility, low mowing height, and

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Sooty Blotch & Flyspeck of Apple (PPFS-FR-T-16)

Sooty blotch and flyspeck (SBFS) were once thought to be two separate diseases, but research has shown that they are a single complex of as many as 100 different fungal species.  SBFS commonly appears in late summer and results in

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Fruit Rots of Cucurbits (PPFS-VG-07)

Fruit diseases can cause a complete loss of cucurbit yields in commercial fields, as well as in residential gardens. Affected crops in the Cucurbitaceae family include cucumber, muskmelon (cantaloupe), pumpkin, summer squash, winter squash, and watermelon.  The major diseases discussed

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Midwest Fruit Pest Management Guide 2021-2022 (ID-232)

The Midwest Fruit Pest Management Guide 2021-2022 was developed by the Midwest Fruit Workers Group, which includes University of Kentucky Extension specialists from Plant Pathology, Entomology, and Horticulture, as well as specialists from twelve other universities. This publication was recently

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Rust Diseases of Brambles (PPFS-FR-S-06)

The three most important rust diseases occurring on brambles in Kentucky are cane and leaf rust, late rust, and orange rust. Distinguishing between these rust diseases is critical for proper management. This new publication discusses symptoms, signs, bramble hosts, causes,

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What’s Wrong with My Taxus? (ID-52)

Taxus (yew) is an evergreen shrub commonly found in Kentucky landscapes. Numerous conditions can cause these shrubs to exhibit yellowing and browning symptoms. Taxus troubles can be the result of diseases, insects, or adverse growing conditions. Pinpointing the specific cause

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Early Blight & Septoria Leaf Spot of Tomato – Disease Management for Commercial Growers

Early blight and Septoria leaf spot are the most common fungal diseases of tomato in Kentucky. Often occurring together, these diseases can significantly reduce yields during seasons with humid, wet weather. This newly released publication was created to assist commercial

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Dothistroma Needle Blight of Pine (PPFS-OR-W-25)

Dothistroma needle blight afflicts some pine species commonly planted in Kentucky landscapes, particularly Austrian and Mugo pines. This disease results in brown needles, which may or may not drop from branches, and unsightly trees. This fact sheet covers symptoms, cause,

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Common Diseases of Spruce in Kentucky (PPFS-OR-W-24)

Spruce trees, particularly blue spruce (Picea pungens) and Norway spruce (Picea abies), are popular landscape trees in Kentucky. Unfortunately, these trees present problems for homeowners when they show evidence of poor vigor, dieback, or needle drop.  This publication discusses the

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When White Pines Turn Brown…Common Problems of White Pines in Kentucky (PPFS-OR-W-22)

Eastern white pine (Pinus strobus) is a popular conifer in many Kentucky landscapes; however, this species is subject to browning as a result of various environmental and disease problems. In Kentucky, brown needles on white pine are often caused by

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Plant Diseases – Kentucky Master Gardener Manual Chapter 6 (PPA-46)

The Plant Disease chapter in the Master Gardener Manual (Figure 1) focuses on those living organisms that cause disease: fungi, water molds, bacteria, viruses, nematodes, phytoplasmas, and parasitic plants. Large, color pictures (Figure 2) that depict selected stages in various

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Featured Publication

Diagnosis of “No Disease” (PPFS-GEN-11) Extension Agents and growers may occasionally receive diagnostic reports from a University of Kentucky Plant Disease Diagnostic Laboratory that indicate “no disease was found.”  The following fact sheet provides possible reasons behind this diagnosis. Diagnosis

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Don’t Eat Those Wild Mushrooms…unless you know what you are doing! (PPFS-GEN-14/FORFS-16-01)

A variety of mushrooms can be seen in landscape mulch, in lawns, on forest floors, and in open meadows after autumn rains.  For many, there may be a temptation to gather and eat these wild mushrooms or toadstools.  Unfortunately, there

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