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ivlinnesota DNR- The Truth About Exotic Species:European(Common) Buckthorn Page 2 of 2 . <br /> Mid-August to October: NIN DNR Region V State Parks Resource Management has been <br /> using a fall cut with immediate stump application of a 1 part Roundup (41% glyphosate) with <br /> 5 parts water solution using a hand sprayer. Initial checks indicate a>85%control overall. <br /> Kline, 1983 in Wisconsin, used a 1:1 water:Roundup solution on cut stumps in <br /> August/September with 100%control. <br /> Winter: 1 part Gazlon 4 (61.6%triclopyr)with 4 parts of an oil, such as Penevator, and dye <br /> on cut stumps was reported as very effective by Region V State Parks staff. Frill application <br /> is also effective. Experiments at the University of Wisconsin Arboretum report good results <br /> using a 12.5%active ingredient solution on cut stumps, or a 6%active ingredient solution <br /> basal bark treatment to stems<3 inches dbh. Pathfinder, a ready to use formula with 13.6% <br /> triclopyr also works. <br /> DNIt l��f�urina�i�>n CcnCur Phon::: (;�I-�9(i-61�7 �,r tiSS-��IINtiD\R <br /> �(l�i L,if,t��,�tt�� R�rid "I�TI': b�I-�9(i-�-tS-i or�iUO-(i>7-:9:�) <br /> �t. I'���.L ,A�1� ��1 S>-�i0-�ii [�ur l��;R Intu: info(a�dnr.state.mn.us ��R�QmB <br /> driving directions tii��• �;'{:,n��,���;t;: webmaster(c�dnr.state.mn.us -- <br /> (.011i:;illi �� =1)1)O i��1i111C>11,21 �JC��tIfU11l'!lt (ll ��lfUYil� E�i'iOUI�C�S. i��� filiit:� �'C�CI'\C��_!. <br /> http://www.dnr.state.mn.us/fish and wildlife/exotics/buck.html 5/14/O1 <br />