Speaker: Doug Johnson from the California Invasive Plant Council (Cal-IPC)

Topic: Managing Invasive Plants in Wildlands Requires an IPM Approach on Several Fronts

One is prevention, which can be aided by evaluating which species pose a high risk of becoming harmful in the future. Another is selecting the best control techniques for a given management situation. Cal-IPC has projects addressing both of these needs: one project teams with other Western states to evaluate the risk of potential invasive plants using the online PRE tool, and the other project teams with UC IPM to build the online WeedCUT decision-support system for selecting control techniques.

The IPM Hour is a monthly online seminar covering a variety of IPM-related topics and research. It's held the second Wednesday of each month at 12 noon Pacific Time and features two 20-minute presentations followed by 10 minutes of discussion each. You can tune in live or check out the recordings on the Western IPM Center YouTube channel.

Other weed science-related IPM Hour recordings:

Episode 18 - WATCH RECORDING
Managing Herbicide-Resistant Italian Ryegrass with Electric Current in Hazelnut Orchards
Presenter: Marcelo Moretti, Assistant Professor and Extension Weed-Management Specialist, Oregon State University

Episode 16 - WATCH RECORDING
Use of Precision Applied Steam to Control Soilborne Pathogens and Weeds in Lettuce
Presenter: Mark Siemens, Department of Biosystems Engineering, University of Arizona
Description: Lettuce drop (Sclerotinia spp.) and in-row weed control are major concerns of California and Arizona lettuce growers. Soil disinfection using steam is a highly effective technique for controlling plant pathogens and weeds, but is cost prohibitive since conventionally steam is applied to the entire soil profile. To address this, a prototype band-steam was developed where only narrow strips of soil centered on the seed line are treated. The device is principally comprised of a 35 BHP steam generator mounted on a bed shaper. The system's design and operation, as well as field trials results will be presented and discussed.

Episode 16 - WATCH RECORDING [Begins at 26:00]
Developing Non-chemical Harvest Weed Seed Control Strategies in Dryland Crops
Presenter: Eric Westra, Department of Agricultural Biology, Colorado State University
Description: The presentation will cover updates on field trials evaluating how chaff lining fits into dryland cropping systems in the Central Great Plains as an integrated weed management tool. Evaluation of chaff lining weed control efficacy in wheat, corn, and grain sorghum will provide information on how this integrated weed management tactic will fit in new geographic regions.

Episode 15 - WATCH RECORDING [Begins at 30:25]
Medusahead Impacts on Livestock Production and Low-Cost Management Options
Presenter: Jeremy James, Dept. of Natural Resources Management and Environmental Sciences, Cal Poly
Description: Medusahead is a widely dispersed invasive annual grass across the West with limited low-cost options for management.  Here we first examine the potential economic impacts of medusahead on livestock production and then discuss the potential to use very low rates of aminopyralid applied in spring as a means to sterilize medusahead seed and increase abundance of desired plants.  We show the potential for aminopyralid to reduce medusahead seed viability at management scale and pasture wide reduction in medusahead abundance.  We also show how economic impacts of medusahead can change depending on grazing management decisions.

Episode 10 - WATCH RECORDING
Spot It! Report It! Remove It! Mobilizing Residents in the Fight Against Invasive Weeds  
Presenter: Qiting Chen, IPM Coordinator, City of Edmonton, Alberta
Description: Public education and awareness of invasive plant species are essential to support integrated pest management efforts in municipalities. The public plays an important role in detection, data collection and early intervention of invasive plant species. In Edmonton, efforts to engage the public in IPM activities have been ongoing and in 2019 the city launched a social marketing campaign called Spot it, Report it, Remove it. Tactics used include public outreach events, community weed pulls, door-to-door outreach campaigns, and the weed identification feature in the Edmonton 311 app. We will discuss the results and lessons learnt from the campaign.

Episode 06 - WATCH RECORDING
Revegetating Weed-Infested Rangeland
Presenter: Jane Mangold, Professor and Extension Invasive Plant Specialist, Montana State University
Description: Seeding desired vegetation to compete with weeds is sometimes necessary when weeds have dominated rangeland for many years and remnant vegetation is scarce. This presentation will share research results from a variety of Montana studies where seeding was integrated with other weed-control strategies.”

Episode 05 - WATCH RECORDING
Ecological Management of Kochia in Irrigated Western Cropping Systems
Presenter: Prashant Jha, Associate Professor and Extension Weed Specialist, Iowa State University
Description: This presentation will highlight on how to best implement sustainable integrated weed management programs to reduce herbicide reliance and manage weed resistance to herbicides in sugar beet-based crop rotations of the Western United States.

Episode 04 - WATCH RECORDING [Begins at 29:12]
A Developing and Developed Countries Perspective on Implementation of Integrated Weed Management
Presenter: Anil Shrestha, Weed Science Professor, California State University, Fresno
Description: Concepts of integrated weed management with examples from South Asia and the United States, including social and economic issues.

Original source: The Western IPM Center