Monthly Archives: August 2016

Moist Soils May Cause Outbreaks of Slugs in Late Soybean Planting

Slugs and Their Habitat Slugs are not insects, thus insecticides to control bugs are not effective to control this pest. Slugs are mollusks and related to snails. This year, during late April and early May, I received information on the

Posted in Grains

Tobacco Flea Beetles & Hornworms

Flea Beetles Tobacco flea beetles (Figure 1) usually are a common problem right after tobacco is transplanted. Overwintered adults fly into fields to feed before laying eggs around the base of newly-set tobacco and other solanaceous plants. Flea beetle larvae

Posted in Tobacco

Powdery Mildew of Hemp Research Yields Valuable Insights for Growers

Interest in hemp production in Kentucky is on the rise. However, little to no information is known about the many diseases that pose a risk to hemp. One of the most common diseases of hemp is powdery mildew. This disease

Posted in Hemp

Lace Bug Feeding Injury Appearing

Lace bugs use their sucking mouthparts to feed on plant sap. Damage ranges from a few scattered tiny white-to-yellow spots on upper surfaces of leaves to bleached-white leaves that drop prematurely in late summer (Figure 1). Common species in Kentucky

Posted in Landscape Trees & Shrubs

Bumble Bees Can Surprise You

Bumble bees are social insects that nest in protected places: belowground in abandoned burrows of small mammals, in birdhouses, stuffing in abandoned furniture, or under piles of grass or rags in sheds or barns. They visit flowers to collect pollen

Posted in Household Pests, Human Pests

Horse Flies and Deer Flies – Can They Be Controlled?

Female horse flies and deer flies slash skin with blade-like mouthparts to create small pools of blood from which they feed. Both groups of these closely related flies can be serious pests of cattle, horses, and humans. Horse flies range

Posted in Livestock Pests

Plant Disease Diagnostic Lab Highlights

The following plant disease highlights from the University of Kentucky Plant Disease Diagnostic Laboratories represent recent sample submissions from field crops, fruit, vegetables, and ornamentals. Diseases diagnosed on agronomic crops during the past week have included gray leaf spot, Diplodia

Posted in Plant Disease Diagnostic Lab

2016 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

Insecticides Registered Against the Sugarcane Aphid on Grain & Sweet Sorghum in Kentucky for 2016

Sugarcane Aphid Identification The sugarcane aphid (Melanaphis sacchari) is an invasive pest that may rapidly produce population outbreaks and cause heavy yield reductions in grain and sweet sorghum. Sugarcane aphids are easily identified under a dissecting microscope; they are recognized

Posted in Grains, Pesticide Topics

Defoliating Caterpillars: Is Control Justified?

Several caterpillars can attack deciduous trees late in the growing season. Common examples are the orange-striped oak worm, red-necked caterpillar, and the walnut caterpillar. Orange Striped Oak Worm The orange striped oak worm (Figure 1) can be abundant in August.

Posted in Landscape Trees & Shrubs

Hover Flies: Beneficial but Occasionally Annoying

Some of the common names of the small bee-like flies shown in Figure 1 include corn fly, hover fly, helicopter fly, flower fly, and sweat bee. Each name fits some aspect of the insect’s appearance, behavior, or hangout. These convincing

Posted in Beneficial Insects

Plant Disease Diagnostic Lab Highlights

The following plant disease highlights from the University of Kentucky Plant Disease Diagnostic Laboratories represent recent sample submissions from field crops, fruit, vegetables, and ornamentals. Diseases diagnosed on agronomic crops during the past week have included gray leaf spot, Diplodia

Posted in Plant Disease Diagnostic Lab

2016 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