2008 Statewide Strategic Plan for Eurasian Watermilfoil in Idaho
2008 Statewide Strategic Plan for Eurasian Watermilfoil in Idaho
2008 Statewide Strategic Plan for Eurasian Watermilfoil in Idaho
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Appendix 3. Treatment Method Summary<br />
Method Treatment Cost Cost/Acr<br />
Areas <strong>for</strong> use<br />
e<br />
Applied*<br />
Physical<br />
Treatment<br />
Diver Dredge $140/hr, 2 divers, 30hrs <strong>for</strong> 1 acre 4,200.00 Light <strong>in</strong>festations.<br />
Bottom Barrier $1/sq ft, <strong>in</strong>cludes ma<strong>in</strong>tenance 43,560.0<br />
0<br />
<strong>Idaho</strong> Department of Lands permit required. Best <strong>for</strong><br />
use <strong>in</strong> dock/mar<strong>in</strong>a areas<br />
Biological<br />
Treatment<br />
Grass Carp $20/fish, 20/acre 400.00 Only <strong>for</strong> use <strong>in</strong> closed systems. Requires F&G permit<br />
and outlet/ <strong>in</strong>let barrier construction. Best <strong>in</strong> EWM<br />
monocultures<br />
Chemical<br />
Treatment<br />
2,4-D Liquid $115 - $230 (systemic herbicide) 380.00 Quiescent water<br />
2,4-D Granular $261 - $522 (systemic herbicide) 670.00 Deep or flow<strong>in</strong>g water<br />
Triclopyr Liquid $339 - $898 (systemic herbicide) 950.00 Shallow still water<br />
Triclopyr Granular $325 - $877 (systemic herbicide) 1,030.00 Deep or flow<strong>in</strong>g water<br />
$81 - $710 (requires multiple<br />
1,160.00 Not eligible <strong>for</strong> use <strong>in</strong> mov<strong>in</strong>g waters<br />
Fluridone Liquid "bumps")<br />
$114 -$666 (requires multiple<br />
1,110.00 Not eligible <strong>for</strong> use <strong>in</strong> mov<strong>in</strong>g waters<br />
Fluridone Granular "bumps")<br />
Diquat $97 - $194 (contact herbicide) 340.00 Mov<strong>in</strong>g waters and spot treatments<br />
Endothall liquid $116 - $159 (contact herbicide) 310.00 Spot treatments<br />
Endothall granular $207 - $277 (contact herbicide) 430.00 Mov<strong>in</strong>g waters and spot treatments<br />
*Cost/acre is only an estimate. Costs can vary widely depend<strong>in</strong>g on water depth, water exchange, level of <strong>in</strong>festation, and<br />
treatment costs.<br />
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