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Response of Four Soybean Cultivars to Metribuzin

Published online by Cambridge University Press:  12 June 2017

Jerry A. Ivany ,
John A. Macleod  and
J. Brian Sanderson
Jerry A. Ivany
Affiliation:
Weed Control and Soil Fertility, Agric. Canada, Charlottetown, Prince Edward Island, Canada, C1A 7M8
John A. Macleod
Affiliation:
Weed Control and Soil Fertility, Agric. Canada, Charlottetown, Prince Edward Island, Canada, C1A 7M8
J. Brian Sanderson
Affiliation:
Weed Control and Soil Fertility, Agric. Canada, Charlottetown, Prince Edward Island, Canada, C1A 7M8
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Abstract

The effect of metribuzin at six rates of application was evaluated on four soybean (Glycine max L.) cultivars and on common hempnettle (Galeopsis tetrahit L.) over a three-yr period (1985 to 1987). The cultivars Maple Amber and Baron were susceptible to metribuzin whereas the cultivars Maple Isle and KG-20 were tolerant of metribuzin. Metribuzin caused progressively greater reductions in plant stands and loss in yield in the susceptible cultivars as rate of application increased. Metribuzin at 0.5 kg ha-1 or higher controlled over 90% of common hempnettle.

Keywords

Metribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4#)-onesoybean, Glycine max (L.) Merr., ‘Baron,’‘KG-20,’ ‘Maple Amber,’ ‘Maple Isle’common hempnettle, Galeopsis tetrahit (L.) # GAETEPlant standGaleopsis tetrahitGAETE
Type
Research
Information
Weed Technology , Volume 6 , Issue 4 , December 1992 , pp. 934 - 937
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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