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Effect of Herbicides on Take-All Disease (Gaeumannomyces graminis) in Winter Wheat (Triticum aestivum)

Published online by Cambridge University Press:  12 June 2017

Ray M. Geddens ,
Arnold P. Appleby  and
Robert L. Powelson
Ray M. Geddens
Affiliation:
Crop Sci. Dep. State Univ., Corvallis, OR 97331
Arnold P. Appleby
Affiliation:
Crop Sci. Dep. State Univ., Corvallis, OR 97331
Robert L. Powelson
Affiliation:
Bot. Plant Pathol. Dep., Oreg. State Univ., Corvallis, OR 97331
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Abstract

Experiments were conducted in each of two seasons to determine possible effects of diclofop, difenzoquat, dinoseb, and mecoprop on the incidence of take-all disease and grain yield of winter wheat. All of the herbicides, especially mecoprop, reduced incidence of take-all. Treatments increased grain yields the first year but not the second, compared to the inoculated weed-free control. None of the herbicides tested increased incidence or severity of take-all disease in either of the two seasons. The technique of inoculating disease-free soil was successful in obtaining uniform and reproducible incidence of disease.

Keywords

Diclofop, (+)-2-[4-(2,4-dichlorophenoxy)phenoxy]propanoic acid, methyl esterdifenzoquat, 1,2-dimethyl-3,5-diphenyl-1H-pyrazoliumdinoseb, 2-(1-methylpropyl)-4,6-dinitrophenol, dimethylamine saltmecoprop, (+)-2-(4-chloro-2-methylphenoxy)propanoic acid, amine salttake-all, Gaeumannomyces graminis (Sacc.) Arx and Olivier var. tritici Walkerwheat, Triticum aestivum L. cv. ‘Stephens'Diclofopdifenzoquatdinosebmecoprop
Type
Research
Information
Weed Technology , Volume 4 , Issue 3 , September 1990 , pp. 478 - 481
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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