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Oximes as Seed Safeners for Grain Sorghum (Sorghum bicolor) to Herbicides

Published online by Cambridge University Press:  12 June 2017

Tsern-Shi Chang  and
Morris G. Merkle
Tsern-Shi Chang
Affiliation:
Dep. Soil and Crop Sci., Texas A&M Univ., College Station, TX 77843
Morris G. Merkle
Affiliation:
Dep. Soil and Crop Sci., Texas A&M Univ., College Station, TX 77843
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Abstract

Studies in growth chambers indicated that CGA-43089 {α-[(cyanomethoxy)imino] benzeneacetonitrile} applied at a rate of 1.25 g/kg of seed reduced the phytotoxicity of metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide], bensulide [o,o-diisopropyl phosphorodithioate S-ester with N-(2-mercaptoethyl) benzenesulfonamide], EPTC (S-ethyl dipropylthiocarbamate), UBI-S734 {2-[(1,2,5-dimethylphenyl)ethylsulfonyl] pyridine N-oxide} and MBR-18337 {N-[4-(ethylthio)-2-(trifluoromethyl)phenyl] methanesulfonamide} to grain sorghum [Sorghum bicolor (L.) Moench] during seed germination and seedling emergence. The protected sorghum tolerated metolachlor over a wider range of rates than it tolerated the other herbicides. CGA-43089 did not protect sorghum from the phytotoxicity of trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine). Of seven other oximes tested as seed treatments, dimethylglyoxime, benzophenone oxime, pyridine-2-aldoxime, benzoin-α-oxime, and methyl thioacetohydroxamate showed promise for increasing the tolerance of grain sorghum to metolachlor. In general, higher rates of these oximes than the rate of CGA-43089 were required for equivalent protection of sorghum.

Keywords

AntidotesmetolachlorEPTCbensulideCGA-43089
Type
Research Article
Information
Weed Science , Volume 30 , Issue 1 , January 1982 , pp. 70 - 73
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

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