We Need Your Help Scouting for Asian Long Horned Beetle

Indiana residents are being urged to spend a few minutes checking trees in their yards and neighborhoods for signs of the Asian longhorned beetle (ALB), an invasive and potentially highly destructive pest.

Purdue University entomologist Clifford Sadof said early detection is the best way to contain the pest and minimize the risk to healthy trees.  "For ALB, the only tool we have is to eradicate the hosts," Sadof said. "No one wants to see apparently healthy trees cut down but the reality is that once the ALB is there, those trees are already dead."

Trees at risk of Asian longhorned beetle infestation include maple, birch, elm, willow, ash and poplar.  Identifying ALB early means fewer trees would have to be removed, he said.

"The sooner we find it, the smaller the area that could be affected," Sadof said. "The best way to protect our trees is by looking at them and reporting any suspicious signs. It takes just a few minutes to look around and it could save a lot of trees."

The Asian longhorned beetle originated in Asia and has no natural enemies in the Midwest. Infestations have been reported in Chicago and Cincinnati, putting Indiana squarely in the at-risk zone, Sadof said. He cautioned that the potential damage caused by Asian longhorned beetles is even greater than the risk posed by the emerald ash borer.

"That's because the Asian longhorned beetle can affect a greater variety and greater number of trees," Sadof said.

The Asian longhorned beetle is easy to recognize, Sadof said. Distinctive markings include:
* A shiny black body about 1-1 1/2 inches long with white spots.
* Long antennae with black and white bands.
* Six legs with bluish feet.

Signs of Asian longhorned beetle infestation are:
* Round exit holes, the size of a dime or smaller, in tree trunks and branches.
* Round or oval scars in the bark.
* Sawdust-like material on the ground near the tree or in branches.
* Dead branches or limbs falling from an otherwise healthy looking tree.

Residents who detect any of these signs should contact the Indiana Department of Natural Resources toll-free hotline, 1-866-663-9684 (1-886-NO EXOTIC). They can also download the Purdue Tree Doctor app for their mobile devices.

"The app provides photos that homeowners and professionals can use to identify both the Asian longhorned beetle and emerald ash borer," Sadof said.

Writer: Darrin Pack
Source: Clifford Sadof

Agricultural Communications: Keith Robinson 

Turf Tips - Lawn Diseases 2016

The summer of 2016 has been quite favorable for the development of an assortment of infectious diseases on residential turf. The primary driver of all of this disease activity is the weather. In the lower Midwest, the combination of elevated temperature and ample precipitation since the beginning August of has spawned outbreaks of brown patch, dollar spot, Pythium blight, leaf spot diseases, and the appearance of symptoms of summer patch and necrotic ring spot. Although infection is almost entirely a function of temperature and moisture, there are other factors (addressed in the linked blog post) that may hasten the decline of turf once disease becomes established.

Not all turf species are susceptible to all diseases. In general, Kentucky bluegrass (KBG) is less prone to brown patch , dollar spot, gray leaf spot, and Pythium blight—but very susceptible to root diseases such as necrotic ring spot and summer patch. Root pathogens are present in all soils, and infect turf as soil temperatures increase beyond 60F. With ample moisture, infection will continue through summer. Plants are killed outright in some instances, but in most cases, KBG can tolerate some infection. However, during periods of environmental stress, infection-impaired plants cannot survive, and characteristic dead patches or rings or frog-eyes appear.

To continue reading this TURF TIPS BLOG post, CLICK HERE!

Rick Latin, Ph.D.
Professor of Plant Pathology
Purdue University

Selecting and Preparing Autumn Produce

Fall is in the air!  Ahhh and yes, it is my favorite time of year. Cool crisp mornings combined with mild afternoons means its time to think about harvesting those fall fruit and vegetable crops.  

This morning I ran across this helpful publication titled Autumn Produce  which focuses on how to select or harvest garden vegetables, how to pick the perfect apple while enjoying one of Central Indiana's many orchards, and finally a few tips for preparing your bounty.  

Click here for a list of the local orchards offering agri-tourism opportunities this time of year. For more information contact your local Extension office.