Blog Archives

Fall Armyworm Update

Fall armyworm reports continue to come in with a wide range of crops attacked, including pasture grasses (crabgrass, Bermuda grass, orchard grass, sorghum-Sudan grass), alfalfa, clover, soybean, sorghum, and cabbage. The pest has a wide host range including over 80

Posted in Forages, General Pests, Grains

Why are My Fall Armyworm Melting?

The have been a few reports of fall armyworm (FAW) larvae ‘melting’ on plants. This is likely due to infections of the larvae by a naturally occurring nucleopolyhedrovirus, usually referred to as an NPV. There are many different types of

Posted in Forages, Grains

Fall Armyworm May Have a Persistent Presence as Oviposition Lingers in August

During July of 2021, fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) caused serious damage in soybeans and forages in Central and Western Kentucky. Fall armyworm is a polyphagous pest that feeds on many plant species of the Poaceae (grasses, including rice,

Posted in Forages, Grains

Fall Armyworm Outbreak: Round Two

About a month ago, we experienced a large fall armyworm moth flight into the state from southern areas. This resulted in outbreaks in Western Kentucky in pastures, sorghum, and soybeans, primarily double-crop beans.  Some surrounding states consider this the biggest

Posted in Forages, Grains, Lawn & Turf

Fall Armyworm Moth Numbers Increasing

Fall armyworm (FAW) is a migratory pest that re-infests Kentucky each summer and is killed by frost in the fall. It often shows up later in the season after corn has tassled and lost its attractiveness to this pest. But

Posted in Forages

Watch Pastures for True Armyworm

There has been one report of true armyworm in pastures, and moth numbers increased dramatically the week before last in Lexington. While I also have a KPN article on fall armyworm in western Kentucky this week, keep in mind these

Posted in Forages

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

Begin Scouting Fields for Alfalfa Weevil

The UK Ag Weather Center’s degree day model for alfalfa weevil indicates that many counties in Kentucky have recently exceeded the 190 Degree Day (190 DD) used as a starting point to begin scouting for alfalfa weevil. Most other counties

Posted in Forages

Watch for Blister Beetles in Hay

Several species of blister beetles are common in Kentucky; they can be a problem to livestock when they infest alfalfa hay. As few as 5 to 10 of these beetles can be fatal to horses when ingested because of the

Posted in Forages

Potato Leafhopper, Hopperburn, and Christobal

The Gulf tropical depression Christobal has been making headlines with heavy rains experienced in the South and expected in parts of the Midwest. But there is more than just rain that arrives with these storm systems; they also carry migratory

Posted in Forages

Warrior II with Zeon Technology® Approved for Control of Crane Flies in Alfalfa

In 2019, we reported that an alfalfa field was affected by crane flies in Muhlenberg County. Similar issues have been observed this year in the same field. Alfalfa plants showed signs of severe injuries to stems, foliage, and roots. A

Posted in Forages

Begin Scouting Fields for Alfalfa Weevil

The UK Ag Weather Center’s degree day model for alfalfa weevil indicates that some counties in southern Kentucky have exceeded the 190DD used as a starting point to begin scouting. Other counties will exceed that total within the next few

Posted in Forages

Don’t let This Weevil Eat Your Alfalfa Profits

The earliest field crop pest of the year is often the alfalfa weevil. While adults do some leaf notching, larvae (Figure 1) attack buds and developing leaves, reducing yield and quality of alfalfa. Last year, high numbers were observed in

Posted in Forages

Tropical Soda Apple – An Invasive Plant Threat Found in Kentucky

Be on the lookout for an introduced invasive plant recently found in Kentucky.  A homeowner in Hopkinsville, Kentucky contacted the Christian county Extension Agent for Horticulture about a unique plant discovered in her home landscape area.  The plant identified as

Posted in Forages

Watch for Fall Armyworm in Pastures

Fall armyworm is a recurring pest of pastures, and there have been several outbreaks in pastures the past few years. As we move into autumn, risk of fall armyworm moving into Kentucky from southern areas increases. Growers managing pastures should

Posted in Forages