Disease

Stump treatment to prevent heterobasidion root disease (Annosum)

Posted on by colleenrobinson
Applying a preventative treatment to a fresh pine stump using a backpack sprayer.

Applying a preventative treatment to a fresh pine stump using a backpack sprayer. Photo by: Linda Williams, WI DNR.

There are currently two products available to treat fresh pine stumps to prevent new infections of heterobasidion root disease (HRD), which was previously called annosum. The products are Cellu-Treat and Rotstop-C. Both are water soluble and can be sprayed on the stump. Sporax, a granular/powder product, was previously available but is no longer being manufactured. If you still have a supply of Sporax you can continue to use it. The one-page factsheet on HRD (Annosum) has been updated with information on where to purchase the available products.

For more information on Cellu-Treat and Rotstop-C please check out these websites:

Written by: Kyoko Scanlon, forest pathologist, Fitchburg (Kyoko.Scanlon@Wisconsin.gov), 608-275-3275.

EAB detection continues to grow in urban areas

Posted on by Ellen Clark

EAB is an invasive pest that continues to expand and affect more communities in Wisconsin. EAB affects ash trees, which are prevalent in Wisconsin’s urban forests. Communities have been, and continue to create plans to mitigate EAB infestation. Currently, there are 268 communities with known EAB detections. Unfortunately, Wisconsin has far surpassed the former record for most municipal detections in a single year, 86 this year versus 52 in 2015. Continue reading “EAB detection continues to grow in urban areas” →