Month: September 2018

Public comment period for HRD treatment guidelines revision closes October 16

Posted on by jodieellis

A fruiting body of Heterobasidion irregulare at the base of a pine tree.

By Kyoko Scanlon, forest pathologist, Fitchburg. Kyoko.Scanlon@wisconsin.gov; 608-235-7532

Wisconsin DNR is seeking public comments on a proposed revision to preventative treatment guidelines for Heterobasidion root disease (HRD). Stand-level HRD treatment guidelines were originally released in 2013. A DNR technical team and stakeholder advisory committee proposed a revised version using recent research findings, operational experience, and economic considerations.

The draft document and information about the public comment process can be found at  https://dnr.wi.gov/news/input/Guidance.html#open through Tuesday, October 16, 2018. All comments must be submitted by that date.

Leaf-browning on white and burr oaks

Posted on by jodieellis

By Mike Hillstrom, forest health specialist, Fitchburg. Michael.Hillstrom@wisconsin.gov; 608-513-7690

Dying leaves on white oak. Photo: Mike Hillstrom.

Dying leaves on white oak. Photo: Mike Hillstrom.

During late August and September of this year, Forest Health staff received several comments about problems with white and burr oaks. Leaves on affected trees turned brown, curled and died prematurely. Some trees were almost completely affected, while others only mildly. Symptoms varied widely between trees, even between those located next to each other. After examining several samples, the DNR Forest Health Lab concluded that damage was likely caused by fungal leaf pathogens and the twig canker fungus Botryosphaeria. Because the damage occurred late in the growing season, afflicted trees will not likely suffer major impacts. Although Botryosphaeria can cause twig dieback, oak trees usually recover without long-term problems. Continue reading “Leaf-browning on white and burr oaks” →

Return of Asian multicolored ladybugs

Posted on by jodieellis

By Linda Williams, forest health specialist, Woodruff. Linda.Williams@wisconsin.gov; 920-360-0665

Multicolored Asian ladybeetles, true to their name, come in a range of colors, from orange to red, with a variety of spot sizes and numbers.

Multicolored Asian ladybeetles, true to their name, come in a range of colors, from orange to red, with a variety of spot sizes and numbers. Photo: Linda Williams

Multicolored Asian ladybeetles are not native to Wisconsin. Although there are numerous native ladybugs in the state, only the Asian variety are known to aggregate in buildings in the fall and become nuisances. Continue reading “Return of Asian multicolored ladybugs” →

Pine root collar weevil

Posted on by jodieellis

By Linda Williams, forest health specialist, Woodruff. Linda.Williams@wisconsin.gov; 920-360-0665

This jack pine is leaning due to damage at its base from pine root collar weevil. Photo: Linda Williams

This jack pine is leaning due to damage at its base from pine root collar weevil. Photo: Linda Williams

Damage from pine root collar weevils was recently reported in Lincoln, Marinette, and Vilas counties on jack pine trees. Pine root collar weevils are known to attack and kill all types of pines, although scotch, red, and jack pine are the most common hosts in Wisconsin. The insects attack pine trees of varying sizes – from large saplings to those of small pole size. Adult weevils deposit eggs at the tree’s base; larvae then bore under bark and feed in the root collar area, effectively girdling the tree. Soil and bark near the root collar becomes blackened and soaked with pitch. Feeding larvae are visible in tunnels under the bark. Continue reading “Pine root collar weevil” →

Oak branch tips laying on the ground this fall

Posted on by jodieellis

By Linda Williams, forest health specialist, Woodruff. Linda.Williams@wisconsin.gov; 920-360-0665

An oak branch tip clipped by a squirrel and dropped to the ground. Photo: Linda Williams

An oak branch tip clipped by a squirrel and dropped to the ground. Photo: Linda Williams

Forest health specialists in the northern part of the state recently received reports of oak trees suddenly losing branch tips (complete with attached leaves). Preliminary examinations of cut/branches did not initially reveal any obvious problems. However, upon closer inspection, teeth marks from squirrels were found on many of them. Squirrels were even observed clipping oak branches and dropping them to the ground. Continue reading “Oak branch tips laying on the ground this fall” →

Upcoming forest health events

Posted on by Kirsten Held

CONFERENCES

OCTOBER 15-18, 2018. Mayo Civic Center, 30 Civic Center Drive SE, Rochester, MN
Upper Midwest Invasive Species Conference / North American Invasive Species Management Association
The Upper Midwest Invasive Species Conference (UMISC) is a biennial conference celebrating 10 years of connecting the invasive species management, research, and policy community. The Conference host organizations and organizing committees are pleased to join with the North American Invasive Species Management Association (NAISMA), celebrating its 25th year, to co-host the largest invasive species conference in North America at the Mayo Civic Center in Rochester, MN – October 15-18, 2018. The goal of UMISC is to strengthen management of invasive species, especially prevention, control, and containment. Invasive species research, prevention, and management has seen great strides but much work still must be done. The conference provides numerous opportunities to network with professionals, land managers, researchers, nonprofits, and others.   The conference is open to the general public. Registration with fees required.

TALKS

OCTOBER 13, 2018. Boerner Botanical Gardens, 9400 Boerner Drive, Hales Corner, WI.
10:00-11:30AM
“Invasive Plants”. Mary Bartkowiak, invasive plants specialist, WI DNR Forest Health Program.
Mary’s presentation will focus on invasives in the marketplace (aka Organisms in Trade) and an overview of the NR 40 invasive species rule. Open to SEWMG Master Gardeners. Registration required.

OCTOBER 15, 2018. Holiday Inn Convention Center, 1001 Amber Ave, Stevens Point, WI
71st Annual Wisconsin Towns Association meeting (October 14-16).
“Enemies of the Town – Insects, Diseases, Invasive Plants and Worms impacting Wisconsin in 2018”. Mike Hillstrom, forest health specialist, WI DNR Forest Health Program.
Talks begin at 8:30AM. The meeting is open to the general public. Registration with fees required.

Emerald ash borer detected in Kewaunee County

Posted on by jodieellis
Communities known to have emerald ash borer as of September 2018 are shown in green, with Kewaunee County highlighted in red. Modified from a map by the Wisconsin Dept. of Agriculture, Trade and Consumer Protection (DATCP).

Communities known to have emerald ash borer as of September 2018 are shown in green, with Kewaunee County highlighted in red. Modified from a map by the Wisconsin Dept. of Agriculture, Trade and Consumer Protection (DATCP).

By Bill McNee, forest health specialist, Oshkosh. Bill.McNee@wisconsin.gov; 920-360-0942

In August, two separate infestations of emerald ash borer (EAB) were found in rural areas of Kewaunee County. EAB has spread through Wisconsin over the last few years, so these detections were expected. The first infestation spans the towns of Carlton and Franklin in the southern part of the county. A county resident reported the second infestation, located in the Town of Casco, in late August. The pest is likely present in other parts of the county as well.

Public comment period for EAB silviculture guidelines revision closes October 9

Posted on by jodieellis

By Bill McNee, forest health specialist, Oshkosh. Bill.McNee@wisconsin.gov; 920-360-0942

Ash trees dying from an EAB infestation. Photo: Troy Kimoto, Bugwood.org

Ash trees dying from an EAB infestation. Photo: Troy Kimoto, Bugwood.org

The Wisconsin DNR is seeking public comments on a proposed revision to silviculture guidelines for emerald ash borer (EAB). Stand-level EAB silviculture guidelines were originally released in 2007, with periodic reviews and updates. A DNR technical team and stakeholder advisory committee prepared the current version using multiple sources of information, including recent research findings, identification and locations of new EAB infestations, economic considerations, and experience gained from implementing previous versions of the guidelines.

The draft document and information about the public comment process can be found at  https://dnr.wi.gov/news/input/Guidance.html#open through Tuesday, October 9, 2018. All comments must be submitted by that date.

Seedling sales begin October 1

Posted on by Kirsten Held

The DNR’s reforestation program will be accepting orders starting October 1, 2018 from Wisconsin forest landowners for trees and shrubs to be planted in spring 2019. The high-quality seedlings are native species appropriate for planting throughout Wisconsin.

Seedlings grown at the state nurseries are used for reforestation and conservation plantings on private, industrial, and state/county forest lands. A minimum order consists of a packet of 300 trees or shrubs of the landowner’s choosing in increments of 100 of each species, or 500 shrubs or 1000 tree seedlings. Seedlings can also be purchased by youth groups and educational organizations for their reforestation and conservation planting projects.

Forest landowners may place orders starting October 1st using an online form found on the DNR website (keyword “tree planting”) or by printing the order form, completing it and mailing it in. Customers may contact the reforestation staff or the DNR forester who serves the area where their property is located for personal assistance. Printed copies of the order form are also available at local DNR offices.

In addition to the online form, customers can also find the following on the DNR website:  the current inventory, a seedling catalog, frequently asked questions, additional tree planting information and a listing of private nurseries.

Contact: Joe Vande Hey, Reforestation Team Leader, 608-574-4904, Joseph.VandeHey@Wisconsin.gov

Complete the Secondary Wood Manufacturer Survey

Posted on by Kirsten Held

The Wisconsin Department of Natural Resources -Division of Forestry is conducting a survey on Wisconsin’s secondary wood manufacturing sector. This sector includes Wisconsin firms that purchase and produce products from lumber, blocks, wood components, fiberboard, plywood, veneer, and manufacturing residue.

The goals of this survey are to: 1.) update the Wisconsin Wood Using Industry Directory, 2.) determine the impact of the secondary wood industry on Wisconsin’s economy, 3.) determine residue availability, and 4.) develop an understanding of educational and training needs for the success of the wood industry. Continue reading “Complete the Secondary Wood Manufacturer Survey” →