Blog Archives

Hot Temperatures & Drought Cause Thrips Population Spikes in Corn

Description of the Problem While scouting for insects affecting corn and soybeans in their early stages of development, large numbers of thrips were observed in corn seedlings (greater than 20 thrips per plant) (Figure 1A-C). Corn plants with thrips were

Posted in Grains

Tips for Drying & Storing Wheat

As wheat harvest approaches, now is a good time to consider drying and storage options. A good place to start is by reviewing the equilibrium moisture content chart for soft red winter wheat below, which shows the limits of drying,

Posted in Grains

IPM 20-point Checklist for Controlling Insects in Stored Wheat

Prior to Harvest [ ] Clean all equipment thoroughly to remove old grain, trash, and debris that might contaminate the new crop – combines, carts, trucks, receiving pits/hoppers, conveyers: use pressurized air/water or an industrial wet/dry vacuum storage bins: use

Posted in Grains

Stink Bugs in Wheat may Have an Early Awakening and Affect Corn and Soybean Seedlings

During the last two weeks of April, I observed brown stink bugs (Euschistus spp.) (Figure 1) and green stink bugs (Nezara viridula) while scouting for aphids in wheat, but surprisingly I had not seen a single rice stink bug (Oebalus

Posted in Grains

2022 Corn & Soybean Fungicide Efficacy Guides Now Available

The 2022 fungicide efficacy tables for foliar diseases of corn and soybean, and for soybean seedling diseases have been updated, and are now available through the Crop Protection Network website. These tables are updated annually based on data provided by

Posted in Grains

Management of Fusarium Head Blight (Scab) of Wheat with Fungicides

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). This disease

Posted in Grains

Conducive Weather for Seedcorn Maggot & Slugs Outbreaks in Field Crops

The rainy and cloudy weather we are currently observing in many growing areas of Kentucky may lead to outbreaks of seedcorn maggots and slugs in corn and soybeans. These pests are problems on emerging seedlings and reduce plant densities. If

Posted in Forages, Grains

Register now for “Scabinar”, a Free National Webinar on Fusarium Head Blight (Scab) of Small Grain Crops

A free national webinar event focusing on Fusarium head blight (also known as “scab”) of small grain crops, known as “Scabinar”, will be held on March 15, 2022 at 10:00 AM – 12:00 PM CST (11:00 AM – 1:00 PM

Posted in Announcements, Grains

The Ragweed Weevil, a Harmless Visitor of Soybean Fields in Kentucky

Description During the last past 5 years, I have found a brownish weevil in soybean research plots at the University of Kentucky’s Research and Education Center at Princeton and in commercial soybean fields. These encounters occurred while I was scouting

Posted in Grains

Soybean Seed Quality Issues Due to Fungal Infections

Although soybean yields have been pretty good this year so far, the seed quality of harvested soybeans has not been great in some fields.  Seed diseases have been prevalent in areas that have received a lot of rain since harvest

Posted in Grains

Difficulties in Diagnosing Diseases of Mature Soybean Plants

After soybean plants have matured in the field, many organisms begin to grow and colonize these plants.  Rainy weather often promotes growth of and colonization by these organisms.  The longer that plants have been sitting in a field after they

Posted in Grains

Spreading of the Brown Marmorated Stink Bug Across West and Central Kentucky: Distribution and Trends

Stink bugs in Kentucky Every year, soybean farmers in Kentucky usually face the attacks of two common stink bugs: the green stink bug (Chinavia hilaris) and the complex of brown stink bugs(Euschistus spp.–i.e., E. variolarius, E. servus), and since 2010

Posted in Grains

Blister Beetles Predatory Behavior Outweigh Their Feeding in Soybeans in Kentucky

Description Blister beetles (Coleoptera: Meloidae) are known for the oily, caustic substance that protects them from predators: cantharidin. Cantharidin is a defensive substance that acts as a deterrent against ants or ground beetles and several species of spiders. In pastures,

Posted in Grains

Red Crown Rot of Soybean Observed for the First Time in Kentucky

Last week, signs and symptoms of red crown rot of soybean were observed in a few fields in Graves County, Kentucky by a local agronomist (Clint Gregory with Hutson Ag) who contacted the University of Kentucky.  Samples were collected from

Posted in Grains

Tar spot on corn confirmed in Kentucky

Tar spot on corn was confirmed by the University of Kentucky Plant Disease Diagnostic Laboratory (PDDL) in Princeton, Kentucky last week. Corn samples submitted by Curt Judy, Todd County Extension Agent, had signs of the tar spot causal fungus Phyllachora

Posted in Grains