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Gypsy Moth Treatments in Porter County

A yellow crop duster was spotted low over Valparaiso early this morning.  The Indiana Department of Natural Resources says the airplane is releasing a bacterium used in treatments to control the gypsy moth. The first local treatment at the Valpo 2 site began just after 5:30 am Central time and was completed about twenty minutes later. Aerial treatment at the Valpo 1 site started just after 7:30 am Central. Region residents with questions about this project can call the Indiana DNR toll-free at 1-866-NO EXOTIC (1-866-663-9684) or their Purdue County Extension office at 1-888-EXT-INFO (1-888-398-4636) during regular business hours.

Additional information from the Indiana DNR: Gypsy moth treatments for the Valparaiso sites in Porter County, Lorane site in Whitley County and the West Lafayette/Purdue site in Tippecanoe County are planned to start Monday, May 19.

The weather forecast indicates conditions are within guidelines for treatment. Each site will receive two aerial treatments of Btk (Bacillus thuringiensis var. kurstaki) spaced four to 10 days apart. Should the weather change on Monday morning, the treatments will be delayed until the next day when weather conditions are within the guidelines.

The flight will start at sunrise and will continue until completed by mid- to late morning, weather permitting. The order of treatment is Tippecanoe County, then one site in Porter County, followed by Whitley County and then the second site in Porter County.

Treatment information is posted at gypsymoth.IN.gov and on the Indiana gypsy moth Twitter site at   http://twitter.com/#!/INdnrinvasive.

A map of the treatment site is also found at gypsymoth.IN.gov.

During the treatment, people in and near the treatment area might notice a yellow crop duster airplane flying 75-125 feet above treetops as it releases Btk (Bacillus thuringiensis var. kurstaki) Foray 76B, a bacterium commonly found in the soil and frequently used in organic farming. Btk kills gypsy moth caterpillars as they feed on tree leaves by disrupting their digestive systems.

Btk has been used for decades by organic gardeners and has an excellent safety record with people and animals. People who live or work near the treatment areas might choose to take common-sense precautions, including staying inside when the planes are flying and for about 30 minutes after treatments are complete. This gives the material time to settle out of the air and adhere to treetops.

In addition to following weather guidelines for treatment, DNR staff monitors leaf development. If leaf development slows because of weather, the treatment may be delayed for that reason and a press release will announce this change.

People with questions about this project can call the Indiana DNR toll-free at 1-866-NO EXOTIC (1-866-663-9684) or their Purdue County Extension office at 1-888-EXT-INFO (1-888-398-4636) during regular business hours. [News release]


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