Laserfiche WebLink
6.2.3.2 Chemical <br />Chemical control of musk thistle includes application of herbicides containing picloram, <br />dicamba, 2,4 -D, or combinations of dicamba + 2,4 -D. Herbicides should be applied to the <br />foliage of the plant during spring or during the fall to rosettes. <br />6.2.3.3 Biological <br />The weevil Trichosirocalus horridus attacks the crown area of musk thistle rosettes and kills or <br />weakens the plant before it bolts. It can be obtained through the Colorado Department of <br />Agriculture. <br />6.2.3.4 Cultural <br />Cultural controls of musk thistle include limiting cattle grazing on the property and encouraging <br />the growth of beneficial grasses. <br />6.2.3.5 Integrated Weed Management <br />Integrated weed management for musk thistle includes combining mechanical and chemical, <br />mechanical and biological, or chemical and biological (provided the chemicals don't injure or <br />kill the insects). Cultural control should be included with all methods. <br />6.2.4 Kochia <br />6.2.4.1 Mechanical <br />Mechanical control of kochia can be accomplished with tillage, hand hoeing, or any other <br />method that disrupts the contact between the plant roots and the soil. <br />6.2.4.2 Chemical <br />Chemical control of kochia includes the application of pre- emergent herbicides containing <br />isoxaben, oryzalin, pendimethalin, or trifluralin, or post- emergent herbicides containing dicamba, <br />glyphosate, triclopyr, or 2,4 -D. <br />6.2.4.3 Biological <br />Biological control of kochia includes grazing by livestock. This will only be effective if the <br />grazed plants are young. Livestock grazing is not currently planned for the Site. <br />6.2.4.4 Cultural <br />Cultural control of kochia includes the aggressive planting of other desirable grasses, forbs, and <br />shrubs. <br />Weed Management Plan 8 <br />