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Chemical Control of Downy Brome in Grasslands of Western Nebraska

Published online by Cambridge University Press:  12 June 2017

G. A. Wicks ,
C. R. Fenster  and
O. C. Burnside
G. A. Wicks
Affiliation:
North Platte Expt. Sta. at North Platte
C. R. Fenster
Affiliation:
Box Butte Expt. Sta. at Alliance
O. C. Burnside
Affiliation:
Dept. of Agronomy at Lincoln, University of Nebraska
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Abstract

The most successful herbicides for control of downy brome (Bromus tectorum L.) in grassland were: 3-amino-1,2,4-triazole (amitrole), 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine), 2-chloro-4,6-bis(isopropylamino)-s-triazine (propazine), and 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine). More consistent downy brome control was obtained with atrazine than the other s-triazines. Amitrole improved postemergence control of the s-triazines in the tillering stage. Intermediate wheatgrass (Agropyron intermedium (Host.) Beauv.), crested wheatgrass (Agropyron cristatum L. Gaertn.), western wheatgrass (Agropyron smithii Rydb.), blue grama (Bouteloua gracilis (H. B. K.) Lag.), and sedge (Carex spp.) appeared to be more sensitive to most s-triazines than needle-and-thread (Stipa comata Trin. & Rupr.) and sand dropseed (Sporobolus cryptandrus Torr.). Sand dropseed was extremely tolerant.

Type
Research Article
Information
Weeds , Volume 13 , Issue 3 , July 1965 , pp. 202 - 205
Copyright
Copyright © 1965 Weed Science Society of America 

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References

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