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Table 1. Considerations for effective chemical treatments to control saltcedar. Considerations Treatment Methods Cut-stump Surface Basal Bark Foliar Spray Plant Stage All stages,triclopyr in summer All stages,but most effective Best results occur with an aerial and fall, applied to stems less than 3"in application of imazapyr in the diameter treated when dormant late summer to early fall(August compared to spring or summer —September). Stop when fall applications. dormancy begins. Treatment Paint the cut stumps immediately Spray the lower uncut 15"of the Herbicide and wetting agent are Process with triclopyr,within 10 plant with triclopyr in an oil applied via spray devices.Ground minutes,sooner is better. Use carrier. Be sure to spray the based sprayers(ATV's or trucks) a water-soluble dye to track entire bark surface of the stem. and aircraft are effective. the treated plants. Herbicide Thoroughly treat each stump, Low-volume application: mix 25 Apply Arsenal*(Imazapyr)with Application especially the cambium layer to 30 gallons Garlon 4*with oil the proper surfactant until the just inside the bark. Stumps to make a 100-gallon mixture. saltcedar is wet,but not dripping. must be wetted completely for Apply to plants with stems less Do not disturb the crown and good control. than 3"in diameter. roots of large trees for 2 years to Inconsistent results. allow imazapyr to move throughout the tree to prevent re- sprouting from the roots. Effectiveness Most popular and effective in Retreatment of the stems that Effective on large stands with few areas unsuitable for aerial or were not killed is difficult non-target plants growing among ground rig applications. Use compared with the cut stump the saltcedar.The shoots near water to avoid drift and treatment. Use where it is very normally die within one year,the contamination of water. rocky or labor is not available roots within two years. for treating cut stumps. Retreatment Is necessary to clean up missed May need to retreat the following If necessary. stumps. year. *Trade or common names have been used to simplify information;no endorsement by the University of Nevada Cooperative Extension is intended nor implied. Likewise criticism of products not listed is neither implied nor intende(L Be cautious when using chemicals.Be careful not to treat irrigation ditches,non-target plants,or surface waters.For more information contact your local University of Nevada Cooperative Extension office. BENEFITS OF SALTCEDAR CONTROL ADDITIONAL RESOURCES Controlling saltcedar and revegetating the land 1) Ball,D.,P.J.S.Hutchinson,T.L.Miller,D.W. improves riparian habitats and increases biodiversity. Morishita,R. Parker,R.D. William and J.P. Using the woody biomasss of saltcedar for value added Yenish. 2001 Pacific Northwest Weed manufacturing in rural Nevada may be a viable option. Management Handbook. Oregon State University. Conversion of saltcedar woodlands to more water Corvallis,OR. pp. 184-203. efficient plants allows water in a watershed to be 2) Bussan,A.J.,S.A.Dewey,W.E.Dyer,M.A. utilized for more beneficial uses. Until alternative Ferrell,S.D. Miller,J. Mickelson,B.Mullin,R. vegetation becomes established on the infested land, Sheley,R. Stougaard,M.A.Trainor,T.D.Whitson actual measurements cannot be taken to determine and D.Wichman. 2001-2002 Weed Management whether or not water is conserved and available. Book. Montana,Utah and Wyoming Cooperative Control of saltcedar also improves grazing,wildlife Extension Services. pp.222,224,273. habitat,and recreational uses along waterways. The University of Nevada,Reno is an equal opportunity,affirmative action employer and does not discriminate on the basis of race,color,religion,sex,age, creed,national origin,veteran status,physical or mental disability or sexual orientation in any program or activity it operates. The University employs only United States citizens and aliens lawfullv authorized to work in the United States.