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Page 17 of 23 <br />Houndstongue <br />. Ro;,l <br />4 <br />i , <br />\ppendix I <br />Houndstongue contains toxic alkaloids that stop her cells from reproducing. Therefore, houndstOMWe <br />reduces livestock and wildlife forage and grazing animals should be kept away. animals may live six or <br />more months after eating it lethal dose of houndstongue. Houndstongue is an early sucessional species on <br />rec:cntly disturbed sites. Houndstongue is common on gravelly, alkaline soils. Maintaining it healthy <br />population of native perennials is the hest way to prevent the establishment and spread of houndstonguc. <br />Mechanical Control of Houndstongue <br />Mo%N ing second year plants during 1lowerii <br />kill the plant. <br />Chemical Control of Houndstongue <br />Piclorant at 0.25-0.5 Ih., 2,4-D, or dicamba <br />provides control of houndstongue. Spring <br />cticctive than tall treatments. Chlorsufuroi <br />time beginning with the rosette stage until I <br />but before seed maturation reduces seed production and in-, <br />1.0 lb., or metsulfuron at 0.6 oz. ai,acre applied in spring <br />atments with pocloram, dicamba, or metsulluron are more <br />ipplied 0.5 Ili. ai ac gave complete control when applied any <br />bolted plant had attained 10 inches in height. <br />NIANACFNIENT