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Page 17 of 23 <br />Houndstongue <br />Appendix 1 <br />I loundstonguc contains toxic alkaloids that stop liN er cells froth reproducing. Therefore, houndstongue <br />reduces livestock and wildlife forage and grazing animals should he kept away. Animals may live six or <br />more month, after eating a lethal dose of houndstongue. Iloundstongue is an early sucessional sprites on <br />recently disturbed sites, Houndstonguc is common on gravelly, alkaline soils. Maintaining, a healthy <br />population of native perennials is the hest way to prevent the establishment and spread of houndstongue. <br />Mechanical Control of Houndstongue <br />Mowing second year plants during flowering but before seed maturation reduces seed production and may <br />kill the plant. <br />Chemical Control of Houndstongue <br />Piclorarn at 0?5-0.5 lb., 2,4-D, or dicamba at 1.0 lb., or metsulfuron at 0.0 oz. ai!acre applied in spring <br />provides conrol of houndstongue. Spring treatrnents with pocloram, dicamba, or mctsulfuron are more <br />effective than fill trcattncnts. Chlorsufuron applied (), 5 lb. ailac gave complete control when applied any <br />time beginning with the rosette stage until the bolted plant had attained 10 inches in height. <br />NIANAGEIIIENT