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Effect of Imazethapyr on Perennial Grasses

Published online by Cambridge University Press:  12 June 2017

Robert G. Wilson
Robert G. Wilson*
Affiliation:
Dep. Agron., Univ. of Nebraska, Scottsbluff, NE 69361
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Abstract

Experiments were conducted near Scottsbluff, NE in 1991 and 1992 to evaluate the selectivity of imazethapyr for weed control in blue grama, intermediate wheatgrass, little bluestem, Russian wildrye, switchgrass, and western wheatgrass. Imazethapyr reduced weed biomass in all seedings and injured all perennial grasses 12 days after treatment (DAT). Imazethapyr reduced the height of intermediate wheatgrass, Russian wildrye, and switchgrass 35 DAT. Russian wildrye, and switchgrass biomass 50 DAT was reduced by imazethapyr. Weed biomass in new seedings of intermediate wheatgrass and western wheatgrass were reduced more than that of the other grasses.

Keywords

Imazethapyr, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidblue grama, Bouteloua gracilis (H.B.K.) Lag. ex Steud.intermediate wheatgrass, Agropyron intermedium (Host) Beauv.little bluestem, Andropogon scoparius Michx.Russian wildrye, Elymus junceus Fisch.switchgrass, Panicum virgatum L.western wheatgrass, Agropyron smithii RydbPlant competitionAgropyron intermediumAgropyron smithiiAndropogon scopariusBouteloua gracilisElymus junceusPanicum virgatum
Type
Notes
Information
Weed Technology , Volume 9 , Issue 1 , March 1995 , pp. 187 - 191
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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