Blog Archives

Spotted Wing Drosophila on the Rise

Spotted wing drosophila (SWD, Figure 1) activity is increasing, based on positive samples identified from several southern and central Kentucky counties. Some locations have trapped relatively high numbers needing control. This increase in activity is earlier than what we have

Posted in Fruit

Cedar-Hawthorn Rust

Cedar-hawthorn rust is a common disease of apple, crabapple, hawthorn, and ornamental pear in Kentucky; it also affects quince, mountain ash, pear, and serviceberry. Symptoms are beginning to appear across the state. The pathogen overwinters as galls on its alternate

Posted in Fruit, Landscape Trees & Shrubs

Downy Mildew of Grape

Downy mildew is an important disease of commercial and backyard grapes in Kentucky. Warm, wet, humid weather conditions favor infection and disease development. When flowers, clusters, and shoots become infected by downy mildew, yield losses result. This disease may also

Posted in Fruit

Cane Blight of Brambles

Cane blight occasionally impacts homegrown and commercial raspberries and blackberries in Kentucky. The disease causes lesions to develop on both primocanes (current-year canes) and floricanes (second-year or fruiting canes) and can result in reduced yield and cane death. Fungicides are

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

Cedar-Apple Rust

Cedar-apple rust is the most common and economically important rust disease of apple in Kentucky.  The pathogen overwinters as galls on cedar and juniper. Removal of these pathogen sources on cedar can later reduce disease incidence on apple. Once apple

Posted in Fruit

Fire Blight Alert and Risk Map Overview

Many apple and pear trees are in bloom throughout 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

Posted in Fruit