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Noxious Weed Management Plan

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WEED MANAGEMENT PLAN Asotin County Noxious Weed Control Board P.O. Box 881 Asotin, WA 99402 (509) 243-2098 Table of Contents I General Information Page - Introduction 3 - Asotin County Noxious Weed Control Board 3 - Weed Board Philosophy 4 - Goal 4 - Mission Statement 4 - Local Land Management Agencies 5 - Services, Materials and Information 5 - Board Meetings 5 - Weed Control Districts 6 - District Map 7 - Ongoing Projects 8,9 II Noxious Weeds Page - Bull thistle (Cirsium vulgare) 11 - Canada thistle ( Cirsium arvense) 14 - Dalmatian toadflax (Linaria dalmatica) 17 - Field bindweed ( Convolvulus arvensis) 21 - Hawkweeds spp ( Hieracium spp) 24 - Houndstongue ( Cynoglossum officinale ) 27 - Jointed goatgrass ( Aegilops cylindrical) 30 - Kochia ( Kochia scoparia ) 32 - Leafy spurge ( Euphorbia escula L .) 34 - Mediterranean sage ( Salvia aethiopis L.) 36 - Myrtle spurge ( Euphorbia myrsinites) 38 - Oxeye daisy ( Chrysanthemum leucanthemum ) 40 - Poison hemlock ( Conium maculatum ) 42 - Puncturevine ( Tribulus terrestris ) 45 - Rush skeletonweed ( Chonddrilla juncea L.) 48 - Russian knapweed ( Acroptilon repens ) 51 - Saltcedar ( Tamarix ramosissima ) 54 - Scotch thistle ( Onopordum acanthium ) 56 - Spotted knapweed and Diffuse knapweed - (Centaurea maculosa; C. diffusa ) 59 - St. Johnswort ( Hypericum perforatum ) 63 - Sulfur cinquefoil ( Potentilla recta L.) 65 - Whitetop ( Cardaria draba, C. pubescens ) 67 - Yellow starthistle (Centaurea solstitialis) 70 III Literature Cited 74 Introduction This handbook is designed to be a quick and easy resource guide for land owners and managers in Asotin County, Washington. It is expected to promote better and faster identification of problem weeds and to disseminate knowledge concerning various control practices. This Weed Management Plan should be considered a “work in progress”. Pages for additional weeds will be added from time to time. Information on weeds already listed will be updated as new knowledge concerning control techniques, distribution, etc. becomes available. No endorsements by the Asotin Country Noxious Weed Control Board are implied. This information has been assembled using the most reliable resources available at the time of printing. The Asotin County Noxious Weed Control Board does not assume any liability for the recommendations contained herein. Any use of pesticides or other chemicals contrary to the instructions on the printed label is neither legal nor recommended. Asotin County Noxious Weed Control Board The Asotin County Noxious Weed Control Board (ACNWCB) consists of five members appointed by the Asotin County Commissioners, each representing a different geographical section of Asotin County. Weed Board members act in accordance with Revised Code of Washington (R.C.W.) 17.10 and Chapter 16-750 of the Washington Administrative Code (W.A.C.). Board Members Don Polumsky District 1 (Peola) Tom Petty District 2 (Cloverland) Dan Sangster District 3 (Asotin Flats) Jerry Hendrickson District 4 (Tenmile) Harold Thompson, Chairman District 5 (Clarkston, Asotin) Nelle Murray Coordinator Weed Board Philosophy The invasion, establishment and spread of noxious weeds is one of the most serious threats to our natural resources today. Our wildlife, native vegetation, water quality, aesthetics, agricultural production, forest production and recreation either have been or are at risk of being altered to unacceptable levels due to the spread of noxious weeds. The Asotin County Noxious Weed Control Board strives to represent the interests of all landowners and land-users in Asotin County. We are working to establish and maintain an integrated vegetation management approach toward the control of noxious weeds within our boundaries. We value the diversity of the land as well as the diversity of the people who choose to make this county their home. Goal of the ACNWCB The goal of the ACNWCB is to eradicate, contain and/or control noxious weed populations in Asotin County. Noxious weeds, according to R.C.W. 17.10, are defined as, “any plant which, when established, is highly destructive, competitive, or difficult to control by cultural or chemical practices.” The board promotes a system of practices using integrated vegetation management. Integrated vegetation management means using all practical methods of weed control at the most effective time. Management recommendations may include mechanical, cultural, chemical or biological control efforts. The Board is committed to educational projects that enhance the public’s awareness of invasive weeds. Mission Statement The mission of the Asotin County Noxious Weed Control Board is to carry out the State Noxious Weed Law (RCW 17.10) in a manner which assists the land managers and land users of Asotin County be responsible stewards of the land and resources by protecting and conserving our agricultural lands, recreational areas and natural resources from the degrading impact of exotic, invasive noxious weeds. Local Land Management Agencies In addition to the Asotin County Noxious Weed Control Board office, the following local agencies are available to help you develop effective weed control measures and a general land management program for your property: Asotin County Cooperative Extension : Mark Heitstuman: (509) 243-2009 135 2 nd Street; Asotin, WA 99402 Natural Resources Conservation Service : (509) 758-8012 Services, Materials, & Information Provided There are many sources of information available free of charge at the Weed Office. Plant identification books, videos, and actual plant samples are available for public use. The Weed Coordinator can visit your property at your request to help you identify weeds and make recommendations for future control. The Asotin Weed Office is located in the Court House Annex. Summer hours are Mondays 6:30 – 11:30 a.m. Winter hours are 7:00 – 8:30 a.m. Mondays, Tuesdays, and Wednesdays. Board Meetings The public is invited and encouraged to attend our monthly board meetings. Unless noted otherwise, all meetings are held in the Weed Office at the Asotin County Court House Annex, 95 2nd Street, Asotin. 2005-2006 ACNWCB Board Meeting Schedule: The first Monday of each month, 7:00 p.m. Asotin County Weed Control Board Districts District 1 (Peola), is generally that geographical area laying south of the Snake River, west of the city of Clarkston, north of Asotin Creek Road, and east of Garfield County. District 2 (Cloverland), is generally that geographical area laying south of Asotin Creek Road, north and west of the Cloverland Road, and east of Garfield County. District 3 (Asotin Flats), is generally that geographical area laying south and east of the Cloverland Road, west of Highway 129, north of the Asotin/Wallowa County line, and east of Garfield County. District 4 (Tenmile ), is generally that geographical area laying south of Weissenfels Road, west of the Snake River, east of Highway 129, and north of Asotin/Wallowa County line. District 5 (Clarkston/Asotin), is generally that geographical area surrounding the cities of Clarkston and Asotin; extending south and west of the Snake River, east of a longitudinal line running through the junction of Asotin Creek Road and Cloverland Road, and north of a latitudinal line running through Weissenfels Road. Asotin County Weed Control Board Districts District 1 (Peola), is generally that geographical area laying south of the Snake River, west of the city of Clarkston, north of Asotin Creek Road, and east of Garfield County. District 2 (Cloverland), is generally that geographical area laying south of Asotin Creek Road, north and west of the Cloverland Road, and east of Garfield County. District 3 (Asotin Flats), is generally that geographical area laying south and east of the Cloverland Road, west of Highway 129, north of the Asotin/Wallowa County line, and east of Garfield County. District 4 (Tenmile ), is generally that geographical area laying south of Weissenfels Road, west of the Snake River, east of Highway 129, and north of Asotin/Wallowa County line. District 5 (Clarkston/Asotin ), is generally that geographical area surrounding the cities of Clarkston and Asotin; extending south and west of the Snake River, east of a longitudinal line running through the junction of Asotin Creek Road and Cloverland Road, and north of a latitudinal line running through Weissenfels Road. Ongoing Projects 2005-2006 1. Cooperative partnerships with the Wild Turkey Federation, Nez Perce Biocontrol, Center for Invasive Plant Management, Rocky Mountain Elk Foundation, BLM, WSU, and private landowners released 65,000 Eustenopus weevils in Asotin County in 2003 and 70,000 in 2004. Similar releases are expected for 2005. 2. Weed surveys in a cooperative agreement with BLM on properties located in Asotin County. 3. Working with Asotin County Master Gardeners doing invasive weed surveys, a “plant” summer camp for elementary and middle school students, and “Adopt-A-Beach” program on the Snake River. 4. The Weed Board has successfully obtained grants from the Washington State Noxious Weed Control Board, Bonneville Power Administration, the Wild Turkey Federation, the Rocky Mountain Elk Foundation, and the Center for Invasive Plant Management. 5. The Asotin Weed Board works in cooperation with Wallowa Resources to control noxious weeds in the Grande Ronde corridor. 6. In cooperation with Colorado Department of Agriculture, the Asotin Weed Board has released weevils (Microlarinus sp) for the control of puncturevine. Weevils were released in the George Creek drainage in 2003 and
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  • The Phytophagous Insect Fauna of Scotch Thistle, Onopordum Acanthium L., in Southeastern Washington and Northwestern Idaho

    The Phytophagous Insect Fauna of Scotch Thistle, Onopordum Acanthium L., in Southeastern Washington and Northwestern Idaho

    Proceedings of the X International Symposium on Biological Control of Weeds 233 4-14 July 1999, Montana State University, Bozeman, Montana, USA Neal R. Spencer [ed.]. pp. 233-239 (2000) The Phytophagous Insect Fauna of Scotch Thistle, Onopordum acanthium L., in Southeastern Washington and Northwestern Idaho J. D. WATTS1 and G. L. PIPER Department of Entomology, Washington State University, Pullman, Washington 99164-6382, USA Abstract Scotch thistle, Onopordum acanthium L. (Asteraceae: Cardueae), a plant of Eurasian origin, has become an increasingly serious pasture, rangeland, wasteland, and roadside weed in the western United States. Prior to the implementation of a biological control agent acquisition and release program, a domestic survey was carried out at 16 sites in five southeastern Washington and northwestern Idaho counties between 1995-96 to ascertain the plant’s existing entomofauna. Thirty phytophagous insect species in six orders and 17 families were found to be associated with the thistle. Hemiptera, Homoptera, and Coleoptera were the dominant ectophagous taxa, encompassing 50, 20, and 17% of all species found, respectively. The family Miridae contained 60% of the hemipteran fauna. Onopordum herbivores were polyphagous ectophages, and none of them reduced popula- tions of or caused appreciable damage to the plant. The only insect that consistently fed and reproduced on O. acanthium was the aphid Brachycaudus cardui (L.). A notable gap in resource use was the absence of endophages, particularly those attacking the capitula, stems, and roots. Consequently, the importation of a complex of nonindigenous, niche- specific natural enemies may prove to be a highly rewarding undertaking. Key Words: Onopordum, Scotch thistle, weed, biological control, entomofauna Scotch thistle, Onopordum acanthium L.