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Response of Four Soybean Cultivars to Metribuzin

Published online by Cambridge University Press:  12 June 2017

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

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.

Type
Research
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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