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Species Susceptibilities to 2,4-D on Mixed-Grass Prairie

Published online by Cambridge University Press:  12 June 2017

D. N. Hyder
D. N. Hyder*
Affiliation:
Plant Science Res. Div., Agr. Res. Serv., U. S. Dep. of Agr., Fort Collins, Colorado 80521
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Abstract

Thirteen prominent species decreased 40% or more after applications of (2,4-dichlorophenoxy)acetic acid (2,4-D) at 2.2 kg/ha. Four of the “most-susceptible” species [gumweed (Grindelia squarrosa (Pursh) Dunal), fringed sagebrush (Artemisia frigida Willd.), drummond milk vetch (Astragalus drummondii Dougl. in Hook.), and hairy goldaster (Chrysopsis villosa (Pursh) Nutt.)] are considered undesirable and two of them [bluebells (Mertensia lanceolata (Pursh) A. DC.) and evening-primrose (Oenothera coronopifolia Torr. & Gray)] desirable. The other seven species of this group are quite unimportant for cattle. Therefore, spraying mixed-grass prairie with 2,4-D improves range condition and increases forage production.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 5 , September 1971 , pp. 526 - 528
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

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