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Page 15 of 23 <br />Appendix 1 <br />>valmation toadflax <br />.; <br />. ... <br />~ ix~ .- ~i ~ ) e <br />.~~ ~~~~ <br />~~ , _ ,. <br />~ ~~ ~, .Y.`.~V~ . <br />•;sfl~; 'weir . > "'~1 .: ~ ~~, . 1 ~ <br />MANAGEMENT <br />Figure 2: DALMATION TOADFLAX [Linaria dalmatica <br />(L.) Maire & Petitmengin]. Noxious. This differs from yellow toadflaxLrincia~en~shfo/ia ssp. dalmatica <br />p p yin being larger and <br />having differently shaped leaves. Clumps of stems are 3 to 4 feet tall. Waxy Leaves are broad, ovate, <br />sometimes heart shaped and upper leaves clasp the stem (an important difference). Seeds are irregular in <br />shape, angular, somewhat flattened, thin-edged, strongly netted, tan-gray and 1/24 to 1/16 inch across. It is <br />not as common, but is more aggressive than yellow toadflax. It is reported in various parts of the state from <br />5,000 to 6,500 feet. <br />All toadflax species are very difficult to control and management plans should integrate as many strategies <br />as possible to increase potential for success. Assess the condition and composition of the existing plant <br />community in an infested area then determine the approximate composition of the desired plant community <br />needed to achieve land management goals and objectives. Create a management plan that combines various <br />control strategies to foster development of the desired plant community. <br />Chemical and Cultural Management of Dalmatian 'r'oadflax <br />Dalmatian toadflax may be controlled with Tordon 22K at 2 pt/A sprayed at flowering or in fall. In <br />Colorado, rates of 2, 4, and 8 pt/A of Tordon were compared and control longevity was greatest from the 2 <br />pt rate, apparently because competition from crested wheatgrass was maintained. Researchers in Wyoming <br />treated Dalmatian toadflax in early September, 1994, with Tordon at 2 pt/A, then seeded the following year <br />in April or August with `Hycrest' crested wheatgrass, 'Luna' pubescent wheatgrass, `Critana' thickspike <br />wheatgrass, `Bozoisky' Russian wildrye, or `Sodar' streambank wheatgrass. The combination of spraying <br />and seeding competitive grasses controlled Dalmatian toadflax better than spraying alone. Three years after <br />treatments were started, control of Dalmatian toadflax ranged from 6 t percent to 86 percent where grasses <br />were seeded in April and from 76 percent to 95 percent from the August seeding, compared to no control <br />tmm spraying alone <br />