Monthly Archives: August 2020

Soil-borne Pathogens Serve as the Biggest Threat to Mum Production in Kentucky

Many Kentucky vegetable and greenhouse producers are beginning to include fall chrysanthemum production in their operations.  Mums are usually planted in June and sold in September when fall color is in demand.  In Kentucky, mum production can vary in size,

Posted in Ornamentals

Expect an Early Invasion of Stink Bugs this Fall

Based on what I saw while entering my home this weekend, brown marmorated stink bug has begun the search for overwintering sites. This is about 11 days earlier than what I have seen before. So, if you have had problems

Posted in Household Pests

Foliar Diseases of Cucurbits (PPFS-VG-10)

Alternaria leaf blight, angular leaf spot, anthracnose, downy mildew, and powdery mildew are foliar diseases that commonly affect cucurbit vegetables in Kentucky.  Losses can occur in both commercial and residential plantings.  Vegetables in the cucurbit family include cucumber, gourds, muskmelon

Posted in Featured Pubs & Videos

2020 Insect Trap Counts

Trap counts for major insect pests are provided by the Kentucky IPM Program. Traps are located at the UK Research and Education Center in western Kentucky and the UK Spindletop Farm in Lexington.  Below are trap counts for the current

Posted in Insect Trap Counts

Spotted Corn Leaves: Disease or Something Different?

Over the past few weeks, there have been increased reports of spotting on corn leaves across the state. Symptoms include tiny tan to brown spots with a darker brown margin (Figure 1). These spots can be just a few spots

Posted in Grains

Powdery Mildew of Hemp

Powdery mildew can affect numerous plants, including fruit, vegetable, and agronomic crops, as well as woody and herbaceous ornamentals. Kentucky hemp is also susceptible to this disease. Plants infected early in the season can be seriously damaged, while those affected

Posted in Hemp

Rose Rosette Disease: A Threat to Kentucky Roses

Rose rosette is a devastating viral disease that is a threat to roses, including rose cultivars known for their exceptional disease resistance and cold hardiness. Symptoms can vary greatly, depending upon cultivar, plant age, and growing conditions.  Symptoms are often

Posted in Landscape Trees & Shrubs

Protecting Pollinators from Pesticides

This past weekend, I looked at a colony of honey bees that had died; a large pile of dead bees were spread in front of the entrance with more dead bees on the bottom board. The dead bees had their

Posted in Beneficial Insects

Tomato Wilt Problems (PPFS-VG-15)

Tomato wilt problems that can occur in both residential and commercial plantings include diseases caused by fungi (Fusarium wilt and Verticillium wilt) and bacteria (southern bacterial wilt). In addition, wilting may be associated with an abiotic disorder (walnut wilt), which

Posted in Featured Pubs & Videos

Plant Disease Diagnostic Lab Highlights

The following plant disease highlights have been compiled from samples submitted to the University of Kentucky Plant Disease Diagnostic Laboratories from August 1 to August 17, 2020. Diagnostic samples of agronomic crops have included Rhizoctonia web blight, summer black stem

Posted in Plant Disease Diagnostic Lab

2020 Insect Trap Counts

Trap counts for major insect pests are provided by the Kentucky IPM Program. Traps are located at the UK Research and Education Center in western Kentucky and the UK Spindletop Farm in Lexington.  Below are trap counts for the current

Posted in Insect Trap Counts

Sudden Death Syndrome of Soybean Being Observed in Some Soybean Fields

Disease Symptoms Symptoms of sudden death syndrome (SDS) of soybean have begun to appear over the last couple of weeks in Kentucky. Once soybean plants begin to go through reproductive growth stages, symptoms will first appear as yellow flecks that

Posted in Grains

Sanitation Recommendations for Small-Scale Field Hemp Plantings

Hemp is often considered a disease-free plant. However, research is being done to determine whether certain pathogens can increase to problematic levels in the field. Should disease become a significant problem in field-planted hemp, the result can be premature leaf

Posted in Hemp

Invasion of the Leafhoppers

Leafhoppers in Kentucky 2020 Kentucky is not known for its leafhoppers but ask anyone who has been outside this season and they will tell you Kentucky is full of them. Leafhoppers are found all across America but generally do not

Posted in General Pests

Cherry Leaf Spot (PPFS-FR-T-06)

Cherry leaf spot occurs on both sweet and sour cherry trees; however, it is considerably more serious on sour cherries. Ornamental flowering cherry trees can also be susceptible to this disease.  Premature defoliation from cherry leaf spot reduces flower bud

Posted in Featured Pubs & Videos