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2009-02-26_PERMIT FILE - M2009018 (13)
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2009-02-26_PERMIT FILE - M2009018 (13)
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Last modified
8/24/2016 3:43:53 PM
Creation date
2/27/2009 12:58:39 PM
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Template:
DRMS Permit Index
Permit No
M2009018
IBM Index Class Name
PERMIT FILE
Doc Date
2/26/2009
Doc Name
Weed Management Plan
From
Varra Companies, Inc.
To
DRMS
Media Type
D
Archive
No
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Leary spurge <br />1 ar,V 1 VI T <br />>i t09llinowk*o to Blank '(CZ"1' • II • <br />4H/Youth Agriculture Family/Conyner Hortlcutture Natural Resources Nutrltlon Resources Home <br />no. 3.107 <br />Leafy Spurge <br />by K.G. Beck 1 <br />Quick Facts... <br />• Leafy spurge (Euphorbia esula L.) is a creeping perennial that reproduces from <br />seed and vegetative root buds. <br />• It can reduce cattle carrying capacity of rangeland or pastures by 50 to 75 percent. <br />• Leafy spurge is difficult to control. Its extensive root system has vast nutrient <br />stores that let it recover from control attempts. <br />• Combine control methods into a system to achieve best results. <br />Leafy spurge (Euphorbia esula <br />L.) is a creeping, herbaceous <br />perennial weed of foreign origin <br />that reproduces from seed and <br />vegetative root buds. It can <br />reduce rangeland cattle <br />carrying capacity by 50 to 75 <br />percent. About half of this loss <br />is from decreased grass <br />production. Cattle won't graze <br />in dense leafy spurge stands <br />and these areas are a 100 <br />percent loss to producers. <br />A 1990 survey found 44,000 <br />acres in Colorado infested with <br />leafy spurge. In 2002, the <br />Colorado Department of <br />Agrigculture conducted a <br />follow-up survey and found <br />more than 73,800 infested <br />acres of leafy spurge. <br />Figure 1: Number of acres in Colorado infested with leafy spurge, <br />2002. <br />Leafy spurge is an erect plant <br />that grows 1 to 3 feet tall. Leaves are bluish-green with smooth margins, 0.25 inch to <br />0.5 inch wide, and 1 inch to 4 inches long. <br />Umbel flowers are surrounded by heart-shaped, showy, yellow-green bracts. (An umbel <br />looks like the stays of an umbrella if it is held upside down.) Flowers occur in many <br />clusters toward the top of the plant. Seeds are round to oblong, about 1/12 inch long, <br />gray or mottled brown with a dark line on one side. <br />Leafy spurge contains a white milky latex in all plant parts. Latex distinguishes leafy <br />spurge from some other weeds (e.g., yellow toadflax), particularly when plants are in a <br />http://www.ext.colostate.edu/pubs/natres/03107.htmi 6/20/2005
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