All posts by Melinda Olson

2021 Southern Mensurationists Meeting

Currently, we are still planning a fully in-person SOMENS meeting in Blacksburg, VA September 19-21.

A tentative schedule follows:

Sunday, September 19th 12:00 – 7:00: Registration

Monday, September 20th 8:00 – 5:00: General session

Monday, September 20th 5:00 – 6:00: Reception

Monday, September 20th 6:00 – 8:00: Dinner

Tuesday, September 21st 8:00 – 5:00 (if needed): General session

No field trip will be held this year

Lunch will be provided from 12:00 – 1:00 Monday and Tuesday. In lieu of posters, students who have preliminary results are encouraged to submit abstracts for “flash talks” this year. These will be a great opportunity for practice speaking at a conference, even with limited results.

Talks will be shorter this year (20 minutes max with questions) and breaks will be prioritized. We want people to socialize and reestablish connections! As a reminder, please submit abstracts by August 15th to Corey Green.

Virginia Tech has mandated vaccines for all students and has strongly encouraged all faculty and staff to be vaccinated. For more information regarding Virginia Tech’s COVID policies and safety measures, please visit the Virginia Tech Ready site: We strongly encourage all attendees of SOMENS this year to take all safety measures to ensure we have a successful event.

In the event that COVID variants make an in-person gathering not possible, the meeting will be moved to an online environment. Registration fees will be reduced to $75.00. For those who have already registered, you will be refunded the difference.

Soil Impacts and Recovery from East and Westside Harvest Operations

8:00 AM  Introduction and Highlights from the North American Long-Term Soil Productivity ProgramDeborah Page-Dumroese, USDA Forest Service, Rocky Mountain Research Station
8:15 AM Matching Harvesting Equipment to Your SiteJeff Halbrook, USDA Forest Service, Washington Office (invited)
8:45 AM Using Lidar Data to Select the Most Appropriate Harvesting System for Inland NW SitesRyer Becker, University of Idaho
9:15 AM A Review: Resource Aids to Determine Potential Harvest Impacts to Dry Soil Productivity – Mark Kimsey, University of Idaho
9:45 AM Break
10:00 AM New Skidding Equipment for the Intermountain AreaRob Keefe, University of Idaho Experimental Forest
10:30 AM Using Drones to Evaluate Postfire Slash Treatments for Reducing ErosionSarah Lewis, USDA Forest Service, Rocky Mountain Research Station
11:00 AM The Lasting Effects of Pile Burning on Dry Soils and Forest Recovery in Lodgepole Pine EcosystemsChuck Rhoades, USDA Forest Service, Rocky Mountain Research Station
11:30 AM How Far Does Dirty Water Go? Effectiveness of Stream Buffers and Skid Trail Mitigation During Postfire Salvage LoggingPete Robichaud, USDA Forest Service, Rocky Mountain Research Station
12:00 PM Lunch (included with registration)
1:00 PM When is Soil Too Wet for Harvesting Operations or When is it Dry Enough?Vince Archer, USDA Forest Service, Region 1 (invited)
1:30 PM Assessing Compaction and Recovery on Wet SoilsJohn Gier, USDA Forest Service, Kootenai National Forest
2:00 PM Break
2:15 PM Soil Disturbance Associated with Tethered Logging in Westside Washington and OregonChris Chase, Weyerhaeuser
2:45 PM Assessing Compaction and Recovery on Dry SoilsLeslee Crawford, USDA Forest Service, Malheur National Forest
3:15 PM Soil Disturbance Associated with Tethered Logging in Westside Washington and OregonChris Chase, Weyerhaeuser
4:00 PM Adjourn

2021 Forest and Conservation Nursery Technology Webinar Series

A series of webinars will be held Wednesdays, August 4 through September 8, 2021, 11 – Noon (Pacific Daylight Time).

August 4
Expert Nursery Operations Panel Discussion Regarding Strategies Used During the COVID-19 Pandemic: What Worked, What Didn’t Work, and Looking Towards the Future

  • Iola Elder, Sylvan Vale Nursery, Black Creek, BC
  • Gina Sowders, Tennessee Division of Forestry, East Tennessee State Nursery, Athens, TN
  • Paul Elias, IFA Nurseries, Klamath Nursery, Klamath Falls, OR
  • Tom Stevens, Weyerhaeuser Company, Rochester Nursery, Rochester, WA
  • Aram Eramian, USDA Forest Service, Coeur d’Alene Nursery, Coeur d’Alene, ID

August 11
Back to Basics: Water Management to Meet Seedling Targets

  • Jeremy Pinto, USDA Forest Service, Rocky Mountain Research Station, Moscow, ID

August 18
New and Innovative Nursery Technologies

  • Mike Taylor, The Green Machine Nursery, Winter Garden, FL

August 25
Approaches for Assisted Migration

  • Carrie Pike, USDA Forest Service, Region 9, West Lafayette, IN
  • Vicky Erickson, USDA Forest Service, Region 6, Pendleton, OR

September 1
Expert Panel Discussion: Benefits and Drawbacks of Hot Planting, Summer Planting, and Fall Planting

  • Nabil Khadduri, Washington Department of Natural Resources, Webster Nursery, Olympia, WA
  • Rick Allen, Starker Forests, Corvallis, OR
  • Owen Burney, J.T. Harrington Forestry Research Center, New Mexico State University, Mora, NM
  • T.R. Clark, F&W Forestry Services, Inc., LaFayette, AL

September 8
Turning Valves on the Reforestation Pipeline

  • Kas Dumroese, USDA Forest Service, Rocky Mountain Research Station, Moscow, ID
  • Diane Haase, USDA Forest Service, Westwide Regions, Portland, OR

Each webinar will last approximately one hour and include a Q&A session.

Registration is free, but attendees must register to receive the zoom link.

2021 Scaling for Non-Scalers

Friday, October 22, 2021

9:00 Scaling Bureaus: How they operate and their role in log marketsTom St. Laurent

  • How bureaus fit into the log buying and selling process
  • Represent both the log buyers and sellers
  • Apply log scaling rules
  • Provide qualified scalers
  • Serve as independent third parties

9:30 What does a log scaler do?Mike Belfry

  • How scalers fit into the log transaction process (only measure volume, not value)
  • What is their relationship to log buyers and sellers?
  • The different points in log transport where scaling can occur
  • What is log volume and how is it calculated?
  • What are the specific measurements and data collected on a typical log?
  • Log documentation
  • Understanding gross and net volume
  • Why did my load scale out at a lesser volume? Reasons for volume deductions

10:30 Break

11:00 pm Northwest Log Scaling Rules: Applying uniformity and standardization within the Doug-fir processing areaTom St. Laurent

  • Function and role of the rules

Special Requests: Using procedures in addition to the NW log scaling rulesTom St. Laurent

Noon Lunch (included with registration)

1:00 pm Understanding log grades and sortsMike Belfry

  • What is the difference between grades and sorts?
  • Why do sorts vary from company to company?
  • What is the difference between a good #2 sawlog and a rough #2 sawlog?
  • What is the pulp sort?
  • What is a cull?

2:00 Break

2:15 pm Log accountability: Tracking the log load from landing to millMike Belfry

  • How is data collected? Load receipts, weight reports, sample scales, sample expansion, log tags, scale tickets and certificates
  • Understanding the paperwork: Examples will be provided of load receipts, scale tickets and certificates and each form will be reviewed in detail.
  • What are the standard procedures for documentation and changes?
  • How is the data stored, disseminated and accessed by clients?

3:45 pm Catch-all short topicsMike Belfry and Tom St. Laurent

  • Difference between westside and eastside scaling
  • Understanding cubic measurements
  • Deciphering overrun and underrun
  • Volume conversion factors
  • Using taper factors and actual taper
  • Scaler value and cost

4:15 pm Workshop Adjourns

2021 Joint Annual Meeting: Northeast and Southern Forest and Conservation Nursery Associations

Monday, July 19: Travel day

4:00 – 8:00 Registration (meeting room)
5:30 – 7:00 Icebreaker/Social Food and drinks provided by the hotel in lobby

Tuesday, July 20

6:30 am Continental breakfast
7:00 am Registration table opens
8:00 am WelcomeMike Fiaoni, GOW Nursery Supervisor and Justine Gartner, MO State Forester
8:45 am Community Forestry Issues and how the nursery can serve urban landownersDaniel Moncheski
9:30 am Partnership with GOW nursery and serving urban communitiesMeridith Perkins, Director of Forest Releaf
10:15 am Morning Break
10:30 am Restoring the Ozark Chinquapin Chestnut treesSteve Bost
11:15 am Native trees and shrubs for bees and other pollinatorsEdward Spevak
12:00 pm Lunch
1:00 pm Forest and nursery health issuesRobbie Derhoff, MO Forest Entomologist
1:45 pm Interstate trade and regulationsCollin Wamsley, State Entomologist, MO Dept. of Agriculture
2:15 pm Vendor Introductions
2:40 pm Afternoon break
3:00 pm Laura Dewald, White oak Initiative
3:45 pm Eric Lovelace, Forest Keeling Nursery
4:00 pm Ron Cordsiemon, Plant Materials Center
4:30 pm Meeting of Northeast Nursery Association
6:15 pm Load bus to head to Butterfly House for dinner banquet
9:00 pm Load bus to head back to hotel

Wednesday, July 21: Field Tour

6:30 am Breakfast
7:45 am Board buses
8:00 am – 10:45 am Travel to GOW State Forest Nursery
11:00 am – 12:00 pm Tour
12:00 pm – 1:00 pm Lunch at GOW Nursery
1:00 pm- 2:30 pm Tour
2:30 pm – Load buses to return to hotel
5:15 pm Arrive back at hotel – Dinner on your own

Thursday, July 22: Field Tour

6:30 am – 7:45 am Breakfast
8:00 am Load buses or folks take their own vehicles to Forest Keeling Nursery (FKN)
9:00 am – 12:00 pm Tour Forest Keeling Nursery
12:00 pm – 1:00 pm Lunch at FKN
1:00 pm – 3:00 pm Tour Plant Materials Center
3:00 pm Load bus and vehicles to head back to hotel or home
4:00 pm Arrive back at hotel

2021 Western Mensurationists Meeting

Click here to view/download the 2021 agenda (PDF)

SUNDAY, JUNE 20, 2021

4:00 pm – 6:00 pm Happy Hour Drop-in on Zoom, Meet old friends and make new ones – zoom break out rooms will be available for small groups

MONDAY, JUNE 21, 2021

9:00 – 9:05 Meeting opening and overviewBianca Eskelson

IUFRO session: Linking growth models with remote sensing data – Moderator: Woongsoon Jang

9:05 – 9:25 CanopyShotNoise – An individual-based tree canopy modelling framework for projecting remote-sensing data and ecological sensitivity analysisArne Pommerening

9:25 – 9:45 The effects of thinning on crown structure of Scots pine treesNinni Saarinen

9:45 – 10:00  Empirical growth models based on repeated laser scans in non managed areaPeter Surovy

10:00 – 10:15 Regeneration survey using inexpensive unmanned aerial systemsAdam Conrad

10:15 – 10:30 Simulating the growth of Larix olgensis and predicting the future change using 3-PGS ModelYu Bai

10:30 – 10:45 Coffee break

IUFRO session continued: Linking growth models with remote sensing data – Moderator: Mathieu Fortin

10:45 – 11:05 LiDAR, Stands, FVS, and Woodstock. Happy Together.Clara Clark

11:05 – 11:25 Tree-Level monitoring of open canopy forests from UAS structure from motion dataNeal Swayze

11:25 – 11:45  A case study on forest inventory consistency between multitemporal field measurement, LiDAR and growth modelYuzhen Li

11:45 – 12:00 Coupling LiDAR systems analysis with growth and yield models and diameter distribution models for spatially explicit projections of standing timber in fast growing Eucalyptus plantationsJohn Kershaw

12:05 – 12:55 Networking sessions during lunch – Bring your own lunch! Additional details listed below in the right column.

Moderator: Lara Melo

13:00 – 13:20 Estimating Douglas-fir site index using a Lidar canopy height model and stand age in western Oregon and western WashingtonDonald Gagliasso

13:20 – 13:40 Drivers of productivity differences between Douglas-fir planted within its native range in Oregon and on exotic sites in New ZealandLiam Gilson

13:40 – 13:55 Crown ratio models for loblolly pineKrishna Poudel

13:55 – 14:10 Development and testing an algorithm for estimating top height in TASS simulationsIan Cameron

14:10 – 14:30 Hierarchical Gaussian processes for modeling stand diameter distributions from forest inventory dataBrian Clough

14:30 – 14:45 Coffee break – Surprise! – DO NOT MISS!

Moderator: Andrea Cameron

14:45 – 15:00 Thinning from above or below? Maximizing financial value in Douglas-fir rotations.Todd West

15:00 – 15:20 How good is the data?Fred Martin

15:20 – 15:40 Regional modeling of an invasive annual grass in the intermountain Pacific NorthwestTy Nietupski

15:40 – 15:55 Importance of image pre-processing on the analysis of the imagery acquired with small unmanned aerial systemsSudeera Wickramarathna

15:55 – 16:00 Closing remarks first day

16:00 – 18:00 Happy Hour Drop-in on Zoom, Meet old friends and make new ones – zoom break out rooms will be available for small groups

TUESDAY, JUNE 22, 2021

Moderator: Peter Marshall

9:00 – 9:15  Bridging sampling with covariate designs and rapid biodiversity assessment to estimate local plant species richness – Tzeng Yih Lam

9:15 – 9:35  Decision Space for Field Application of Sector Sampling – Martin Ritchie

9:35 – 9:50 Biomass estimates derived from sector subsampling of 360° spherical images – John Kershaw

9:50 – 10:10  Big trees matter most: Plot optimization for ground-based tropical forest carbon inventories at both country and project scales – Bryan Foster

10:10 – 10:30  Seeing the forest for the clumps: characterizing clumpy regeneration and ladder fuels – Justin Crotteau

10:30 – 10:45  Coffee break

Moderator: Celine Boisvenue

10:45 – 11:05  Post-stratified estimation: Realized and potential efficiency in a national forest inventory – James Westfall

11:05 – 11:20  Improving Forest Sample Estimation through UAS Canopy Structure Stratification – Logan Wimme

11:20 -11:40  Enhanced Forest Inventory using LiDAR data – a hybrid approach – Kat Gunion

11:40 – 11:55  Small area estimation in operational western forest inventories – Corey Green

11:55 – 12:05  Picture taking

12:05 – 12:15  Plans for future years & Closing remarks – Bogdan Strimbu and Bianca Eskelson

For program questions, contact Bianca Eskelson.

2021 Webinar: Skyline and Logging Safety Workshop

All times listed: US Pacific Standard

All workshop registrants will receive an email with the password needed to view the recordings below. Click on any of the green section titles below to view a recording of that section.

April 20, 2021

8:00 – 8:15      Workshop Introductions and Overview

8:15 – 10:00    Unit Layout – How to layout a unit

  • Different levels of harvest planning
  • What is successful skyline harvesting?
  • Review cable systems and skyline carriages
  • Streams
  • Unstable steep slopes

10:00 – 10:15  Break

10:15 – 11:45  Payload, Productivity and Efficiency

  • Skyline deflection – Safe working Loads
  • Factors that influence productivity
  • Wire rope characteristics
  • Variables affecting skyline deflection

11:45 – 12:45  Open Session for Questions


April 22, 2021

8:00 – 10:30    Skyline Logging Landings

  • How landing layout affects productivity
  • Wood flow through the landing
  • Yarder guylines
  • Stump anchors
  • Multi-stump anchors
  • Machine anchors

10:30 – 10:45  Break

10:45 – 11:30  Rigging Tail and Intermediate Trees

  • When and where to use
  • Design and layout
  • Model demonstration
  • Field cards for unit layout

11:30 – 12:00  SkylineXL

  • Introduction to SkylineXL
  • Determining Skyline Payloads

12:00 – 1:00    Open Session for Questions


April 27, 2021

8:00 – 9:30      Logging Safety

  • What unit layout can do for unit safety
  • Review of major watch-out situations

9:30 – 10:00    Break

10:00 – 11:30  Tethered Assist

  • A game changer for logging safety?

11:30 – 12:30  Open Session for Questions

2021 Operational LiDAR Inventory (OLI) Meeting – Recording

Live meeting has already occurred, but recordings are available.

Presentation order

Click on  any presentation title below to view a PDF of the presentation slides.


2021 Intermountain Forestry Cooperative Annual Meeting

Tuesday, March 23rd

7:30 – 8:00 Registration – Check-in

8:00 – 8:10 Welcome and Housekeeping Items

8:10 – 8:50 James A. Moore Keynote Address: Biometrics in the era of remotely sensed forest inventory: Opportunity and RiskJohn Paul McTague, Southern Cross Biometrics

8:50 – 9:20 An overview of NAIP photogrammetric point clouds for forest monitoringJacob Strunk, Vegetation Monitoring and Remote Sensing Team, PNW FIA, USFS

9:20 – 9:40 Break

9:40 – 10:10 International Spotlight: SKYLAB forest AI – fully digitalised inventories from seedling through vitality to timber and carbon stock utlizing image based photogrammetryAlbrect von Ruffer, Skylab, Hamburg, Germany

10:10 – 10:40 Conifer seedling mortality response thresholds to vegetation competition and site typeAndrew Nelson, University of Idaho

10:40 – 11:00 Break

11:00 – 11:30 Regional Spotlight: Some new findings on loblolly pine plantations from long-term large-scale experimental studiesDehai Zhao, University of Georgia

11:30 – 12:00 PPDM Update: Ponderosa pine 6-Yr thinning response by site type and density classMark Kimsey, IFC

12:00 – 1:30 Lunch (on your own)

1:30 – 2:00 PPDM Update: Western larch 4-Yr thinning response by site type and density classMark Kimsey, IFC

2:00 – 2:30 PPDM Update: Physiographic influence on Douglas-fir thinning responseRyan Heiderman, IFC Scholar

2:30 – 3:00 Break

3:00 – 3:30 Stimson Hidden Meadows Study: Western larch response to thinning and multi-nutrient fertilizationLogan Wimme, IFC Scholar and Don Patterson, Stimson Lumber Company

3:30 – 3:50 New IFC Project Introduction: Douglas-fir woods run vs improved seed site type Realized Gain TrialMark Kimsey, IFC

3:50 – 4:00 Meeting wrap-up

2021 WR COFE Webinar Recordings

Morning Session Recording:

  • Introduction and Announcements – Jeff Wimer, Chair, WR.COFE & OSU FERM Department
  • Timber Faller, Rigging Crew and Operator Safety and Health with Tethered Logging Systems and OROSHA Variance Data – John Garland, PE. Consulting Forest Engineer, Professor Emeritus, FERM, Oregon State University, Affiliate Professor, Pacific Northwest Agricultural Safety and Health Center, University of Washington
  • Slope stability and Forest Practices in Washington: regulations, guidance, FPAs, and roles of the geologist and forest engineer  – Ted Turner, Weyerhaeuser
  • Energy Absorbing Cab Guards – Kevin Lyons, Oregon State University
  • Timber Cruising with Body Mounted Cameras – Lucas Wells, Holtz Forestry
Roads Breakout Recording Logging Breakout Recording
Idaho Steep Slope Harvesting: Tracks, Tires, and Tethering – Austin Finster,  Oregon State University Tethered Assist Logging: A Systems Approach – Bruce Skurdahl, Summit Equipment
Surfacing Forest Roads When Aggregate is Expensive – Kevin Lyons, Oregon State University Deadman Anchoring Design for Cable Logging: A New Approach – Francisca Belart, Oregon State University
Towed Grader – Tucker Stanley, Tuckers Road Surface Survey of Harvesting Systems in New Zealand – Hunter Harrill, Humboldt State University
Are battery Electric Log Trucks the Future in Mountainous Terrains in the Pacific Northwest? – John Sessions, Oregon State University Wire Rope Research and Reminders – Brian Tuor, Cable Logging Specialist
Software Tools for the Modern Forest Engineer – Matthew Dickie, Softree Technical Systems DC Equipment and Falcon Forestry Equipment: Our Mechanization Journey – Dale Ewers, DC Equipment

Building Sustainable Tribal Foodscapes In the Time of COVID Webinar Recording

Rebuilding a More Resilient Food System through Regenerative Agriculture & Community Engagement

Nov. 17, 2020 • 6 – 8 pm • U.S. Mountain Standard Time
Speaker: Kelsey Ducheneaux
Click here to view the webinar recording.

Join Kelsey to learn how you as a food consumer or an agricultural products producer can contribute to the effort for a more localized and resilient food system. Kelsey Ducheneaux, a citizen of the Cheyenne River Sioux Tribe is committed to re-localizing local food systems. In her work as a Natural Resource Director, she’s privileged to work with Tribal land stewards across the country as they care for mother earth; deploying thoughtful, regenerative agriculture practices that exercise an evolution of our traditional ecological knowledge that we’ve inherited from our ancestors. Kelsey practices food sovereignty within her own community through DX Beef, LLC, a direct-to-consumer grass-fed beef business. In light of COVID, she’s been able to maintain a consistent, quality product to her local community. Similarly, she’s been able to share her successful business model and platform with other native ag producers that want to feed their community.

2020 Virtual PNW Forest Vegetation Management Conference

Recordings of all presentations are available to paid attendees (passwords are required to view the recordings). Please use the form below to contact us with any questions.

Session 1: Wednesday, 12/2/20.

Oregon has approved 1 Core Credit and 1 Regular Credit for this session. Credits have been applied for. Anticipating 1 credit from each: Idaho and Washington State per Session 1.

9:00 to 10:00 a.m. Human and Environmental Toxicology of Pesticide Formulations and Spray AdjuvantsAllan Felsot, Professor, Department of Entomology, Washington State University

What is the physical chemistry of adjuvants such as surfactants and why they are needed for biological activity? This presentation will provide a review of the regulatory aspect of pesticide formulations and spray adjuvants under State and Federal laws. Dr. Felsot will answer the questions: What are the environmental hazards and human health hazards with adjuvants? and How PPE such as gloves can mitigate most of the health risk.

10:30 to 11:30 a.m. Elk Hoof Disease Research at WSU On Treponema and Forest Vegetation Needs for Large Forest UngulatesMargaret Wild, DVM, PhD, College of Veterinary Medicine, Washington State University and Kyle Garrison, Ungulate Specialist, Washington Dept. of Fish and Wildlife

In 2018 the Washington Legislature allotted funds for the WSU College of Veterinary Medicine to study the problem of elk hoof disease. Dr. Wild directs this project and will provide an update on the findings to date. Project studies include pathogen research around treponema, controlled experiments with captive elk, disease surveillance, and investigating the risk factors in wild elk.

Kyle Garrison will review the research on the forage values of vegetation for elk and the changes made in those plant communities after timber harvest. Comparisons of forage with or without herbicide treatment will be described. In this presentation, Kyle will discuss the relationships among silviculture, elk habitat, nutrition, and disease informed by recent research in the Pacific Northwest.

Session 2: Thursday, 12/3/20.

Oregon has approved 2 Regular Credits. Credits have been applied for. Anticipating 2 credits from each: Idaho and Washington State per Session 2.

9:00 to 10:00 a.m. Water Use and Competitiveness of Senecio sylvaticus in Young Pseudotsuga menziesii Plantations in Western OregonCarlos Gonzalez-Benecke, Vegetation Management Research Cooperative, Oregon State University

Senecio species are a nemesis for reforestation projects throughout the Pacific Northwest and this research shows the species impact on seedling survival and growth. Senecio densities varied across the research sites and comparisons were made for soil moisture depletion and competition with the Douglas fir seedlings.

10:30 to 11:30 a.m. Interactive Effects of Stock Size and Vegetation Management Treatments on Douglas-fir Plantation ProductivityMaxwell Wightman, Vegetation Management Research Cooperative, Oregon State University

This presentation will cover the 10-year results of comparing the interaction of seedling stock size and forest vegetation management treatments in Western Oregon. Three seedling stock types and three vegetation management regimes were studied. The tree seedling growth and volumes were measured as were the long-term effect of the cover of shrubs on these sites.

Session 3: Tuesday, 12/8/20.

Oregon has approved 1 Core Credit and 1 Regular Credit. Credits have been applied for. Anticipating 2 credits from Idaho and Washington State per Session 3.

9:00 to 10:00 a.m. Noxious Weed Control: Identification, IVM Control Methods, Communicating with a Skeptical PublicDana Coggon, Program Manager, Kitsap County Noxious Weed Control Board

Dana will discuss the control of weeds such as Japanese Knotweed, Tansy Ragwort, Giant Hogweed, Scotch Broom and other species. Kitsap County is across Puget Sound from Seattle and includes Bainbridge Island, a rather wealthy bedroom community where many people commute to Seattle via ferry. Dana maintains her program plans and funding by communication with governmental leaders and other agencies, plus manages the field work crew. She employs the use of weed hand pulling, stem injections, spot foliar backpack spray, and broadcast treatments in a suburban environment.

10:30 to 11:30 a.m. Herbicide Tank Mixtures and ToxicologyVickie Tatum, Forest Chemical Program Manager, National Council of Air and Stream Improvement

While resource managers understand the toxicology and envirotoxicology of many of the herbicides used in forestry, there are often questions about tank mixes. Do tank mixes of different chemicals change the toxicity of the combinations? Vickie will share information on this subject so foresters can better understand and communicate tank mixes with the public as well as applicators.

Session 4: Wednesday, 12/9/20.

Oregon had approved 1 Core Credit and 1 Regular Credit. Credits have been applied for. Anticipating 2 credits from Idaho and Washington State per Session 4.

9:00 to 10:00 a.m. Noxious and Invasive Weed Identification and MappingWyatt Williams, Invasive Species Specialist, Oregon Department of Forestry

Wyatt will outline the Oregon Department of Forestry system for the surveillance, mapping, and monitoring of noxious and invasive weed species in forest settings. Planning for control and eradication is important element in any vegetation management project. Integrated vegetation control will be stressed along with control options.

10:30 to 11:30 a.m. The Art of Measuring Pesticides and an Update on PPE RequirementsCarol Black, Pesticide Education Specialist, Washington State University

The accuracy of measuring is important for efficacy, preventing unwanted damage, and saving the investment in the cost of chemicals. Most products have wiggle room, but some measuring devices can lead applicators astray. A review of formulations types and measuring devices will be given. An update on Personal Protective Equipment label changes will be reviewed for some of the common forest herbicides.