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Efficacy of CGA-92194 and Flurazole in Protecting Grain Sorghum (Sorghum bicolor) from Herbicide Injury

Published online by Cambridge University Press:  12 June 2017

John W. Leif III ,
Orvin C. Burnside  and
Alex R. Martin
John W. Leif III
Affiliation:
Univ. Nebraska, Lincoln
Orvin C. Burnside
Affiliation:
Univ. Minnesota, St. Paul, MN 55108
Alex R. Martin
Affiliation:
Dep. Agron., Univ. Nebraska, Lincoln, NE 68583
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Abstract

Field and greenhouse experiments were conducted during 1984 through 1986 to examine the efficacy of the seed protectants CGA-92194 {α-[(1,3-dioxolan-2-yl-methyl)imino]benzacetonitrile} and flurazole [2-chloro-4-(trifluoromethyl)-5-thiazolecarboxylic acid] for protecting grain sorghum [Sorghum bicolor (L.) Moench.] from alachlor [2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl) acetamide], metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide], and propachlor [2-chloro-N-(1-methylethyl)-N-phenylacetamide] injury. In the field, CGA-92194 and flurazole protected sorghum from injury, stand reduction, and yield loss due to alachlor and metolachlor. In general, sorghum was protected with either antidote, and protected response to alachlor or metolachlor was similar to sorghum subjected to propachlor. Greenhouse experiments were conducted to examine the response of bronze and yellow pericarp color to seed protectants, six sorghum hybrids to these antidotes, and the effects of cool soil temperature on the early seedling vigor of sorghum protected with the antidotes. The response of sorghum with yellow and bronze pericarp color was similar when compared across antidotes. However, there were differences among the sorghum hybrids when compared across protectants. The potential of CGA-92194 and flurazole to protect against alachlor injury was reduced when sorghum was grown in cool soil.

Keywords

Alachlormetolachlorpropachlorherbicide antidotesseed protectants
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 35 , Issue 4 , July 1987 , pp. 547 - 553
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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