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Effectiveness of a New Safener for Protecting Sorghum (Sorghum bicolor) from Metolachlor Injury

Published online by Cambridge University Press:  12 June 2017

J. F. Ellis
Affiliation:
Research and Develop. Dep., Agric. Div., CIBA-GEIGY Corp., Greensboro, NC 27409
J. W. Peek
Affiliation:
Research and Develop. Dep., Agric. Div., CIBA-GEIGY Corp., Greensboro, NC 27409
J. Boehle Jr.
Affiliation:
Research and Develop. Dep., Agric. Div., CIBA-GEIGY Corp., Greensboro, NC 27409
G. Müller
Affiliation:
Research and Develop. Dep., Agric. Chem. Div., CIBA GEIGY Ltd., Basle, Switzerland

Abstract

A herbicide safener, CGA-43089 [α-(cyanomethoximino)-benzacetonitrile], has been discovered which will allow the safe use of metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethylacetamide] in grain sorghum [Sorghum bicolor (L.) Moench]. Experiments revealed that sorghum is protected from injury by metolachlor when it is applied at rates as high as 4 kg/ha. Better protection was achieved when sorghum seed were treated directly with the safener than when it was mixed with the herbicide. A CGA-43089 rate of 1.25 to 1.5 g per kg of sorghum seed was adequate for protection. Sorghum tolerance to metolachlor was maintained with CGA-43089 when metolachlor was combined with several s-triazine herbicides. Metolachlor effectively controlled several annual grasses with an increase in sorghum yield.

Type
Research Article
Copyright
Copyright © 1980 by the Weed Science Society of America 

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References

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