Prineville Prineville DistrictDistrict

Vegetation Treatments Using Vegetation Treatments Using Herbicides on BLM Lands in Herbicides on BLM Lands in

OregonOregonEnvironmental Impact StatementEnvironmental Impact Statement

Prineville District - Prineville District - Common Weed SpeciesCommon Weed Species

Whitetop

Dalmatian

toadflaxMedusahead rye

Russian knapweed

Diffuse knapweed

Yellow starthistle

Leafy spurge

Puncture vine

Canada thistle

Example of Weed Example of Weed Treatment MapTreatment Map

Integrated Vegetation Integrated Vegetation ManagementManagement

Provide public information on washing Provide public information on washing vehicles to avoid transporting vehicles to avoid transporting undesirable plant seeds onto public undesirable plant seeds onto public lands; sign boards; handouts at lands; sign boards; handouts at recreation sitesrecreation sites

Coordinate with 8 county weed boards Coordinate with 8 county weed boards and provide funding to 5 counties for and provide funding to 5 counties for weed control on BLM landsweed control on BLM lands

Using biological control agents in Using biological control agents in coordination with Oregon Dept of coordination with Oregon Dept of Agriculture Agriculture

Integrated Vegetation Integrated Vegetation ManagementManagement

Use a variety of approved chemicals for Use a variety of approved chemicals for targeted speciestargeted species

Treatment priorities include high use Treatment priorities include high use recreation areas; acquired lands recreation areas; acquired lands (abandoned agricultural fields); areas (abandoned agricultural fields); areas with high concentrations of noxious with high concentrations of noxious weeds; riparian areas; areas of whitetopweeds; riparian areas; areas of whitetop

Before treatments occur we contact Before treatments occur we contact adjacent landowners and neighbors. adjacent landowners and neighbors. Many treatments are a result of Many treatments are a result of landowners calling uslandowners calling us

Manual & Mechanical Manual & Mechanical TreatmentsTreatments

Approximately 550 acres treated Approximately 550 acres treated annuallyannually

1350 acres are monitored for 1350 acres are monitored for treatment effectivenesstreatment effectiveness Treatments are generally limited to Treatments are generally limited to

areas with good access – high use areas with good access – high use recreation areas and along roadsrecreation areas and along roads

Treatments in the river canyons are Treatments in the river canyons are desirable but difficult and costly due to desirable but difficult and costly due to limited accesslimited access

Biological AgentsBiological Agents

Establishment of food Establishment of food and cover crops to and cover crops to out compete weedsout compete weeds

Introduction of Introduction of toadflax capsule toadflax capsule weevil to control weevil to control Dalmatian toadflax in Dalmatian toadflax in the John Day River the John Day River corridorcorridor

Herbicide TreatmentsHerbicide Treatments Acquired lands (abandoned Acquired lands (abandoned

agricultural fields) use chemicals for agricultural fields) use chemicals for treating knapweeds and broadleaf treating knapweeds and broadleaf weeds (county and BLM)weeds (county and BLM)

Pesticide Use Permit Pesticide Use Permit ApplicationApplication

Location of the area to be treatedLocation of the area to be treated Chemical to be applied, application Chemical to be applied, application

rate and method of applicationrate and method of application Target speciesTarget species Description of treatment siteDescription of treatment site Sensitive aspects and Sensitive aspects and

precautions/mitigationsprecautions/mitigations Impacts to non-target speciesImpacts to non-target species

How Vegetation Treatment How Vegetation Treatment EIS Would HelpEIS Would Help

Target-specific herbicides are more Target-specific herbicides are more effective at treating the problemeffective at treating the problem

Safer to use in sensitive riparian Safer to use in sensitive riparian habitats habitats

Reduced residual off-site effectsReduced residual off-site effects More cost effectiveMore cost effective

District Level AnalysisDistrict Level Analysis

Once the statewide Vegetation Once the statewide Vegetation Treatment EIS is finalized, additional Treatment EIS is finalized, additional National Environmental Policy Act National Environmental Policy Act analysis would be required at the analysis would be required at the District or Resource Area level. District or Resource Area level.