Monthly Archives: April 2021

Considerations for Fungicide Management of Fusarium Head Blight (Scab) of Wheat

Wheat fields will soon be at the anthesis stage (Feekes 10.51, “flowering”) in Kentucky.  Anthesis is a critical time, as wheat becomes susceptible to infection by Fusarium graminearum, the causal agent of Fusarium head blight (FHB; also known as scab) (Figure

Posted in Grains

Fire Blight Alert and Risk Map Overview

Apple bloom is nearing completion across Kentucky, while bloom in pear trees has been complete for a couple weeks. Infection by the fire blight bacterium occurs during bloom, thus, protectant antibiotics should be applied when risk is high.  Risk for

Posted in Fruit

Black Rot of Grapes

Black rot is a common disease of grapes in Kentucky. Due to the prevalence of this disease, it is also one of the most economically important diseases of grapes.  Black rot can affect all young, developing, above ground plant tissues.

Posted in Fruit

Dogwood Anthracnose Spotted

Anthracnose of dogwood is a common problem in Kentucky. Symptoms on landscape and forest dogwoods often first appear during wet periods in late spring. If left unmanaged, the pathogen spreads, eventually resulting in plant death.  Selection of resistant varieties and

Posted in Forest Trees, Landscape Trees & Shrubs

Alfalfa Weevil and Insecticide Resistance

This past week, I received a report of high levels of alfalfa weevil larvae following an insecticide application. The producer was concerned that the insecticide he was using was not effective. I visited with the grower and collected several hundred

Posted in Forages, Pesticide Topics

An IPM Scouting Guide for Common Problems of Strawberry in Kentucky (ID-238)

Scouting and monitoring crops to determine potential problems before they result in serious economic loss is key to the Integrated Pest Management (IPM) approach. This IPM guide was designed to aid in the identification of common problems encountered in strawberry

Posted in Featured Pubs & Videos

2021 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

Fire Blight Alert and Risk Map Overview

Apple and pear trees are blooming across Kentucky. Infection by the fire blight bacterium occurs during bloom, thus, protectant antibiotics should be applied when risk is high.  Risk for infection can be assessed using the Fire Blight Disease Prediction Model.

Posted in Fruit

Brown Rot of Peach Fruit Trees

Abundant rainfall and warm temperatures can lead to an increase in the presence of brown rot on stone fruits (peach, cherry, plum, nectarine), which results in rotten, inedible fruit. Early season management can reduce initial sources of the fungus as

Posted in Fruit

Early-Season Strawberry Insect Management

There are several insect and insect-related early-season pests of strawberry that need to be monitored and, at times, controlled to prevent losses. This includes spider mites, tarnished plant bug, spittlebug, spotted wing drosophila (SWD), sap beetles, and slugs. While SWD

Posted in Fruit

Bacterial Wetwood and Slime Flux

Bacterial wetwood and slime flux refer to bacterial “ooze” that runs down trunks of trees.  Oozing fluids are the result of a bacterial infection known as bacterial wetwood (Figure 1). Advanced development is called slime flux, in which a foul-smelling,

Posted in Landscape Trees & Shrubs

Last Year’s Ornamental Diseases Equal This Year’s Disease Risk

Disease presence last year can indicate a risk for the same disease this year. Many pathogens overwinter on infected plant material or as pathogen survival structures. Poor sanitation practices can lead to an increased risk of these diseases in the

Posted in Landscape Trees & Shrubs, Ornamentals

Commercial Strawberry Fungicide Spray Schedule Worksheet & Sample Spray Guide (PPFS-FR-S-26)

A worksheet with a sample spray guide is available for commercial strawberry growers. This easy-to-use two-page publication is designed to assist growers in planning an appropriate fungicide spray schedule for common strawberry diseases. Commercial Strawberry Fungicide Spray Schedule Worksheet &

Posted in Featured Pubs & Videos

2021 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

It’s Time to Sample for Soybean Cyst Nematode in Your Fields

The soybean cyst nematode (SCN) (Figure 1) causes greater annual yield losses in Kentucky than any other pathogen of soybean.  The last time a formal survey was conducted by the University of Kentucky in 2006 and 2007, approximately 76% of

Posted in Grains