Yearly Archives: 2014

Trichoderma Ear Rot of Corn

Trichoderma ear rot is one of the less common ear rots of corn in Kentucky.  However, occasionally we do see severe outbreaks of this disease in sporadic fields. This ear rot produces abundant growth of dark green to bluish-green fungal

Posted in Grains

Christmas Tree Inhabitants May Wake Up

A number of arthropods live on Christmas trees while others may use them for winter shelter. Most are inactive or sluggish at outdoor temperatures but become active when their tree is brought indoors. The awakening can cause some alarm but

Posted in Household Pests

Workshop to Illustrate Digital Delivery on Mobile Devices of In-Field Data, Information, Photos, and Diagnostic and Decision Tools

You are probably aware that the UK Wheat Science Working Group will be holding its annual Winter Wheat Workshop on January 6, 2015 at the Christian County Cooperative Extension office.  NOTE: this is a change of location from the original

Posted in Grains

Fall Armyworm Resistant to Bt Corn Found in North Carolina: Is Your Field Next?

Mr. Cam Kenimer, who runs our corn variety trials, sent me a link to an interesting article on armyworms developing resistance to Bt corn. The article, which is actually about fall armyworm (FAW), reports that this pest carries a gene

Posted in Grains

Managing High Tunnel Insect Pests

While growers can potentially find any type of insect pest in the high tunnel, whiteflies and thrips are the most common… and the most troublesome.  In addition to insects, several species of mites are serious and common pests. These pests

Posted in Greenhouses/High Tunnels

Evidence of Twig Girdlers Can Be Apparent Now

Twig girdlers are gray-brown wood boring beetles with a pair of antennae that are about as long as their ¾-inch long bodies. They are active from mid-August into October when the female lays her eggs. Twig girdlers can be responsible

Posted in Landscape Trees & Shrubs

German Yellowjackets Are Human Space Invaders

Most encounters with yellowjackets occur when people are working around or inadvertently mowing over underground nests of the eastern yellowjacket or the common yellowjacket. The German yellowjacket is an exception; this species invades our space to build a nesting site.

Posted in Household Pests

Boxwood Blight – Devastating Disease Reported in Kentucky

Boxwood blight (caused by the fungus Cylindrocladium buxicola) was confirmed in October 2014.  Plants submitted to the UK Plant Disease Diagnostic Laboratory were collected from a residential landscape in Fayette County.  Homeowners suspect that infected plants were transported from a

Posted in Landscape Trees & Shrubs

Potential New Host for Emerald Ash Borer Studied and Confirmed

On October 14, 2014, the USDA Systematic Entomology Laboratory (SEL) at the Smithsonian confirmed the partial adult and larval specimens recovered from a white fringetree (Chionanthus virginicus) as emerald ash borer (EAB) (Agrilus planipennis Fairmaire). EAB larvae and a partial

Posted in Forest Trees, Landscape Trees & Shrubs

Lady Beetles Making House Calls

Lady beetles are widely recognized as beneficial insects. In the fall, they congregate to spend the cold winter months in sheltered sites: rock piles, tree holes, etc. However, the multicolored Asian lady beetle has a nuisance side. It is attracted

Posted in Household Pests

Plant Disease Diagnostic Lab Highlights

The following plant disease highlights from the UK Plant Disease Diagnostic Laboratories represent recent sample submissions from field crops, fruit, vegetables, and ornamentals during October. Diagnostic samples of agronomic crops included summer black stem and anthracnose on alfalfa; gray leaf

Posted in Plant Disease Diagnostic Lab

Fall Armyworm Moth Captures Are Rebounding

Capture of fall armyworm moths (FAW) in the UK IPM traps at the UK Research and Education Center (UKREC) in Princeton, KY have increased for the last 2 weeks. These captures are not as great as those from the known

Posted in Grains

Twig Girdlers

Twig girdlers are species of longhorned beetles that have a very distinctive approach to laying their eggs. The female selects a twig that is about the diameter of a fat pencil, and then chews a deep, narrow groove around it.

Posted in Forest Trees, Landscape Trees & Shrubs

Sanitation Is a Key to Dealing with the Iris Borer

Iris borers spend the winter as eggs deposited on plant debris near or around the base of infested plants. Remove and destroy old foliage and plant residue now to eliminate an important source of problems with this destructive insect next

Posted in Ornamentals

Horse Bot Activity Nearing an End

The first hard frost marks the end of horse bot activity for the year and signals the time for treatment. Horse bot flies look and act like bees, buzzing and droning as they hover around waiting for a chance to

Posted in Livestock Pests