Tuesday, July 22, 2014

Invasive beetle confirmed in 3 Arkansas counties

HOPE, Ark. (AP) - State agriculture officials say an insect native to Asia that kills ash trees has been confirmed in three Arkansas counties.

The Arkansas State Plant Board and the Arkansas Department of Agriculture say the emerald ash borer has been found in Hot Spring, Clark and Nevada counties. The insect arrived in the U.S. around 2002 and has killed about 50 million ash trees since then.

Officials say the insect has now been confirmed in 24 U.S. states and two Canadian provinces.
Female emerald ash borers lay eggs on the bark of ash trees. Once the eggs hatch, the larvae bore into the bark, eventually killing the trees.

Officials say the best way to avoid the spread of the insect is to not move firewood from place to place.
(Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

Tuesday, June 24, 2014

Issue no. 8 of the Home, Yard & Garden Newsletter


Guignardia Leaf Blotch

Guignardia leaf blotch is a fungal disease that affects many Aesculus species.  In Illinois, this disease is commonly seen on the common horsechestnut (Aesculus  hippocastanum).  Symptoms begin as rapidly enlarging, irregularly shaped,  water-soaked areas.

Modified Growing Degree Days (Base 50°F,  March 1 through May 15)

Insect  development is temperature dependent. We can use degree days to help predict insect emergence and activity. Home, Yard, and Garden readers  can use the links in this article along with the degree day accumulations to determine  what insect pests could be active in their area.

Illinois  Invasive Plant Phenology Report

Several invasive plant experts  from around the state have started a new series of reports focusing on the  phenology of invasive plants in Illinois. The intent of these reports is to  provide an update on the development of invasive plants across the state of  Illinois -- what plants are in bloom, leafing out, setting seed, or senescing in  different areas of the state.

Thousand  Cankers Disease Confirmed in Indiana, Fungus Found on Insect Other than Walnut  Twig Beetle

The Indiana Department of  Natural Resource issued a press release on Friday, June 20 announcing the  detection of Thousand Cankers Disease in Indiana. Indiana joins Maryland, North  Carolina, Ohio, Pennsylvania, Tennessee, Virginia, and eight western states  with the disease.

Palmer Amaranth -- A New Weed to Watch For

Ask any cotton farmer what has been their biggest weed  problem of recent years and they will all likely tell you the same:  Palmer amaranth (Amaranthus palmeri).  This  plant has put some southern farmers out of business. Midwest farmers are now or  will soon be well acquainted with this fast growing and yield robbing species  as it is moving northward across the Midwest.

Japanese Beetle

Japanese  beetle adults are present throughout Illinois. Robert Bellm, Extension  Educator, reported their presence in Madison County, and Ed Nangle, Chicago District  Golf Association, reported their presence in Cook County. Last week in this  newsletter, we predicted low numbers in the northern half of the state due to  the extended deep soil freezing last winter.

Fall Webworm

Fall  webworm is named for infestations that occur in the northern part of the United  States only in late summer to early fall. In the southern half of the United  States, including the southern half of Illinois, fall webworm has an additional  generation in early summer. This first generation of fall webworm is now  feeding in southern Illinois.

Friday, June 20, 2014

Thousand Cankers Disease Confirmed in Indiana

The fungus that causes Thousand Cankers Disease (TCD) in walnut trees has been detected for the first time in Indiana....more

cankers on walnut branch

Walnut Twig Beetle

Stenomimus pallidus

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