Working together to strengthen and support noxious weed management efforts in Montana.


MSU Report for the Montana Noxious Weed Trust Fund Advisory Council

Wednesday, June 19th, 2013


This report for the Montana Noxious Weed Management Advisory Council was assembled in compliance with the Montana Noxious Weed Trust Fund Act and Administrative Rules which require an annual report from the Montana Agricultural Experiment Station and Montana State University Extension Service on current projects and future plans. This report is a compilation of major weed science research and education activities conducted by MSU over the past three years and includes highlights of funded Montana Noxious Weed Trust Fund grants as well as comprehensive reporting of all weed science research products and education funding and activities.

Montana Noxious Weed Trust Fund Projects 2010–2012

  • Biological Control of Common Tansy and Oxeye Daisy, Jeff Littlefield
  • Biological Control of Invasive Hawkweed and Tansy Ragwort, Jeff Littlefield
  • Biological Control of Russian Knapweed, Jeff Littlefield
  • Biological Control of Whitetop and Perennial Pepperweed,Jeff Littlefield
  • Can Biological Control and Targeted Sheep Grazing be Integrated to Suppress Spotted Knapweed?, Jeff Mosley
  • Cheatgrass Ecology and Integrated Management, Jane Mangold
  • Continental Divide Invasive Weed Barrier Zone, Kim Goodwin
  • Establishing and Monitoring Insectaries for Yellow Toadflax Biocontrol, David Weaver
  • Herbicide Resistance Extension Information for Montana Producers, William Dyer
  • Identifying and Testing Candidate Agents for Russian Olive Biocontrol, David Weaver
  • Implementing EDRR in Montana Using the INVADERS Database, Jane Mangold
  • Integration of Pathogens, Sheep, and Herbicides to Manage Cheatgrass, Fabian Menalled
  • Missouri River Watershed Coalition Coordination, Elizabeth Galli-Noble
  • Rangeland Revegetation Revisited, Jane Mangold        Saltcedar Effects on Mycorrhizal Fungal Communities and Screening of Native Species for Restoration, Erik Lehnhoff
  • Tall Buttercup Ecology and Integrated Management, Jane Mangold
  • Weed Free Borders Protection Program, Kim Goodwin
  • Weed Management Certification Program, Jane Mangold
  • Weed Seedling Identification Guide, Jane Mangold

Download a copy of the complete report 2013 MSU Annual Report to the MNWTF

Missoula County’s Fall Issue of Healthy Acres

Friday, September 28th, 2012


Missoula County Extension and  Weed District produces an online magazine called Healthy Acres. The fall issue of Healthy Acres is now available to download.

There are several articles of special interest to weed warriors ins this issue:

  • Revegetation – “Seeing is Believing”  on page 2
  • Grants – ” 2013 Missoula County Landowner Grants”, on page 2
  • Fall weed management – “Fall is a Great Time to Control Noxious Weeds”, on page 4
  • Bill Ottens – Weed Prevention Coordinator retires, page 8

MSU Webinar on Managing Weeds After Wildfire

Friday, September 7th, 2012


Jane Mangold will be presenting a webinar as part of MSU Extension’s “Montana Drought and Wildfire Resources” program next Thursday, September 12, at 9:30 a.m.  You can read more about the program at  Click on “Montana Wildfire and Drought Resources” to view previous webinars and “MSU Extension offers wildfire and drought resources” under “Latest News” for directions on how to log into the webinar on September 12.

Rangeland Revegetation Revisited: Do short-term results predict long-term outcomes of revegetation? – MSU September Weed Post

Saturday, September 1st, 2012


The September Weed Post  features a recent publication on the long-term outcomes of revegetation on spotted-knapweed infested rangeland in western Montana.  I hope you will find it thought-provoking and useful.    Download and this new publication from Montana State University – September 2012 MSU Monthly Weed Post

MSU Research updates

Thursday, April 12th, 2012


MSU has published a weed research update.   It includes information on the following:

  • Mechanisms driving nonnative plant-mediated changes in small mammal populations and communities
  • Wild Oat Herbicide Resistance
  • Russian olive removal and revegetation
  • Impacts of saltcedar on ecosystems in Montana
  • Sulfur cinquefoil life history in northwest Montana
  • Vegetation surveys to quantify weed threats
  • Toadflax research
  • Common tansy control in natural areas

Download the MSU April 2012 Monthly Weed Post for complete details.

Rehabilitation of Weed-Infested Rangeland

Friday, October 23rd, 2009


by James S. Jacobs, Michael F. Carpinelli and Roger L. Sheley*

URRENT weed management efforts often focus on controlling weeds, with limited regard to the existing or resulting plant community. Because of environmental, ecological and economic concerns, the appropriateness and effectiveness of rangeland weed management practices are being questioned. It has become clear that weed management decisions must consider these concerns. The development of future weed management practices must be based on our understanding of the biology and ecology of rangeland ecosystems.

Land use objectives must be developed before rangeland weed management plans can be designed. This implies that strictly killing weeds is an inadequate objective, especially for large-scale infestations. Instead, a generalized objective could be to develop a healthy plant community that is relatively weed-resistant while meeting other land-use objectives such as forage production, wildlife habitat development or recreational land maintenance.

Full Article Text

Revegetation Guidelines for Western Montana: Considering Invasive Weeds

Friday, October 23rd, 2009


Major portions of western Montana’s landscape become degraded and disturbed every day. Disturbances can be natural, such as floods and fires, or strictly human-induced, such as roads and construction sites, utility line trenches, or improper grazing. These disturbed areas may recover naturally, but in some cases it may be many years before desired plants become established or recover. Conversely, some areas may never naturally recover because invasive weeds may establish first and prevent native plants from establishing, growing, and reseeding. Furthermore, invasive weeds can potentially spread into adjacent, healthy landscapes where they threaten local biodiversity, alter nutrient and water cycling, diminish wildlife and livestock forage, and increase soil erosion and stream sedimentation.

Full Article Text