2008 Statewide Strategic Plan for Eurasian Watermilfoil in Idaho

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Appendix 3. Treatment Method Summary Method Treatment Cost Cost/Acr Areas for use e Applied* Physical Treatment Diver Dredge $140/hr, 2 divers, 30hrs for 1 acre 4,200.00 Light infestations. Bottom Barrier $1/sq ft, includes maintenance 43,560.0 0 Idaho Department of Lands permit required. Best for use in dock/marina areas Biological Treatment Grass Carp $20/fish, 20/acre 400.00 Only for use in closed systems. Requires F&G permit and outlet/ inlet barrier construction. Best in EWM monocultures Chemical Treatment 2,4-D Liquid $115 - $230 (systemic herbicide) 380.00 Quiescent water 2,4-D Granular $261 - $522 (systemic herbicide) 670.00 Deep or flowing water Triclopyr Liquid $339 - $898 (systemic herbicide) 950.00 Shallow still water Triclopyr Granular $325 - $877 (systemic herbicide) 1,030.00 Deep or flowing water $81 - $710 (requires multiple 1,160.00 Not eligible for use in moving waters Fluridone Liquid "bumps") $114 -$666 (requires multiple 1,110.00 Not eligible for use in moving waters Fluridone Granular "bumps") Diquat $97 - $194 (contact herbicide) 340.00 Moving waters and spot treatments Endothall liquid $116 - $159 (contact herbicide) 310.00 Spot treatments Endothall granular $207 - $277 (contact herbicide) 430.00 Moving waters and spot treatments *Cost/acre is only an estimate. Costs can vary widely depending on water depth, water exchange, level of infestation, and treatment costs. 81
Costs include estimated raw material and estimated application costs. Estimates for chemicals assume high treatment rates and $150.00 per acre application costs for herbicide application. Cost estimates based on 2007 prices. Prices subject to change 82
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2008 STATEWIDE STRATEGIC PLAN FOR E
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A Statewide Strategic Plan for Eura
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I. Introduction In April 2006 the I
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V. Idaho Eurasian Watermilfoil Peer
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and contractor oversight to effecti
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Figure 3. Eurasian watermilfoil sur
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• Task 3: Establish appropriate m
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appear first. Eastern Idaho should
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B. Description A number of milfoil
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and boating activities, with each f
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the state. The highest priority wee
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and provides assistance to cooperat
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the boat with a GPS to the predeter
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IX. Eurasian Watermilfoil Managemen
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Bottom barriers are appropriate in
Page 31 and 32: emaining root masses. Duration of c
Page 33 and 34: Search for a classical biological c
Page 35 and 36: sources of dilution need to be inve
Page 37 and 38: 3. Fluridone Fluridone (Trade names
Page 39 and 40: X. Current Eurasian Watermilfoil Ma
Page 41 and 42: 2007 Total project cost: $19,400 IS
Page 43 and 44: 2007 Total project cost: $82,660 IS
Page 45 and 46: C. Effect of sediment on efficacy o
Page 47 and 48: scientists and weevils could easily
Page 49 and 50: Surveys for pathogens were restrict
Page 51 and 52: Creed Jr., R.P. and S.P. Sheldon. 1
Page 53 and 54: Komarov, V.L. 1929. Flora poluostro
Page 55 and 56: Moody, M.L., Les, D.H. in Press. Di
Page 57 and 58: Westerdahl, H.E. and K.D. Getsinger
Page 59 and 60: as transparent and publicly availab
Page 61 and 62: to amend if they require legal revi
Page 63 and 64: Recommendation 2.3: Program intent
Page 65 and 66: Excessive uncontrolled growth of aq
Page 67 and 68: species or the reduction of their p
Page 69 and 70: Some or many of these techniques ar
Page 71 and 72: ISDA Response: Given that ISDA does
Page 73 and 74: expertise found in warmer climates.
Page 75 and 76: umors and public fear of management
Page 77 and 78: Option How it Works Pros Cons Suita
Page 79 and 80: Option How it Works Pros Cons Suita
Page 81: Option How it Works Pros Cons Suita
Page 85: Office Visits Quantity What is the
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2008 Statewide Strategic Plan for Eurasian Watermilfoil in Idaho

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