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Response of Spring Barley (Hordeum vulgare) to Herbicides

Published online by Cambridge University Press:  12 June 2017

Sharon A. Clay ,
Donald C. Thill  and
Verlan L. Cochran
Sharon A. Clay
Affiliation:
Soil Water Manage. Res. Unit, North Central Region, St. Paul, MN
Donald C. Thill
Affiliation:
Dep. Plant, Soil Entomol. Sci., Univ. Idaho
Verlan L. Cochran
Affiliation:
USDA-ARS, Fairbanks, AK
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Abstract

‘Karla’, ‘Klages', ‘Morex’, and ‘Steptoe’ cultivars of spring barley (Hordeum vulgare L.) differed in susceptibility to postemergence recommended application rates of diclofop {(±)-2-[4-(2,4-dichlorophenoxy) phenoxy] propanoic acid}, difenzoquat [1,2-dimethyl-3,5-diphenyl-1H-pyrazolium], chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide}, and metribuzin [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one] in 1981 and 1982. Metribuzin injured Morex, and difenzoquat injured all cultivars within 2 weeks after herbicide application. Metribuzin reduced height and crop biomass compared to the hand-weeded control. Herbicide treatments did not affect grain yield at Moscow, ID, in either year. However, metribuzin reduced yield of Karla and Morex, and diclofop reduced yield of Karla compared to the hand-weeded control at Pullman, WA, in 1982. Barley injury and grain yield loss depended on herbicide treatment and cultivar. Early season herbicide injury to barley did not indicate grain yield response at harvest.

Keywords

Herbicide injurychlorsulfurondiclofopdifenzoquatmetribuzin
Type
Research
Information
Weed Technology , Volume 2 , Issue 1 , January 1988 , pp. 68 - 71
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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