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Management of Fringed Sagebrush (Artemisia frigida) in Saskatchewan

Published online by Cambridge University Press:  12 June 2017

Heather C. Peat  and
Garry G. Bowes
Heather C. Peat
Affiliation:
Agric. Can. Res. Stn., Box 440, Regina, Saskatchewan, Canada S4P 3A2
Garry G. Bowes
Affiliation:
Agric. Can. Res. Stn., 107 Science Cres., Saskatoon, Saskatchewan, Canada S7N OX2
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Abstract

Fringed sagebrush is a native, drought-resistant, increaser species in Saskatchewan pastures and rangelands. Conventional control by cultivating and reseeding is neither highly effective nor sustainable. Two field experiments were conducted in 1988 and 1989 through 1991 to develop a management plan for fringed sagebrush. Comparison of fringed sagebrush control using various applications of clopyralid, dicamba, dichlorprop, fluroxypyr, picloram, triclopyr and 2,4-D, showed control was sufficient using the low-cost herbicide 2,4-D isooctyl ester at 1.5 kg ai/ha. Total yield of crested wheatgrass plus smooth brome was compared and the plots subjected to two applications of 2,4-D yielded the greatest accumulation of grass over the length of the experiments. The economic threshold of fringed sagebrush is the density at which yield is reduced by approximately 290 kg/ha; above this density it is economically viable to use 2,4-D at 1.5 kg/ha to control fringed sagebrush. Grazing practices can aid greatly in management of fringed sagebrush by allowing the forage to out-compete fringed sagebrush.

Keywords

Clopyralid, 3,6-dichloro-2-pyridinecarboxylic aciddicamba, 3,6-dichloro-2-methoxybenzoic aciddichlorprop, (±)-2-(2,4-dichlorophenoxy)propanoic acidfluroxypyr, [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acidpicloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acidtriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid2,4-D, (2,4-dichlorophenoxy)acetic acidcrested wheatgrass, Agropyron cristatum (L.) Gaertnsmooth brome, Bromus inermis Leyssfringed sagebrush, Artemisia frigida Willd. # ARTFREconomic thresholdintegrated weed managementrange managementclopyraliddicambadichlorpropfluroxypyrpicloramtriclopyr2,4-DAgropyron cristatumBromus inermis
Type
Research
Information
Weed Technology , Volume 8 , Issue 3 , September 1994 , pp. 553 - 558
Copyright
Copyright © 1994 by the Weed Science Society of America 

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