Compositions and methods for reducing herbicidal injury
AssigneeMonsanto Company
InventorsDavid E. Schafer, Albert J. Czajkowski
Life of this patent
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Abstract
The disclosure herein relates to the use of organophosphorous compounds as antidotes for thiolcarbamate herbicides used in various crops, particularly grass crops, e.g., corn, rice, barley, sorghum and wheat.
Claims15
A method of reducing injury to grass crops by diallate and triallate herbicides which comprises applying to the soil, crop or crop seed an effective safening amount of a compound of the formula ##STR5## wherein R and R.sup.1 independently represent hydrogen, C.sub.1-13 alkyl, nitro lower alkyl, halo lower alkyl;
- R.sup.2 is equal to phenyl, phenyl substituted by one to three C.sub.1-13 alkyl, lower alkyl, halo, NO.sub.2, CN, CF.sub.3 and CH.sub.3 S-moieties or para-amino sulfonylphenyl;
- provided that phenyl cannot be substituted with NO.sub.2 and CF.sub.3 simultaneously.
A method of reducing injury to grass crops by diallate and triallate herbicides which comprises applying to the soil, crop or crop seed an effective safening amount of a compound selected from the group consisting of O,O-Diethyl O-(4-sulfamylphenyl) phosphorothioate, O,O-Dimethyl O-(4-(methylthio)-m-tolyl) phosphorothioate, O,O-Diethyl O-(p-Trifluoromethylphenyl) phosphorothioate, O,O-Diethyl O-(m-tolyl) phophorothioate.
A safened herbicide composition comprising diallate or triallate herbicide and an effective safening amount of a compound selected from the group consisting of O,O-Diethyl O-(4-sulfamylphenyl) phosphorothioate, O,O-Dimethyl O-(4-methylthio)-m-tolyl) phosphorothioate, O,O-Diethyl O-(p-Trifluoromethylphenyl) phosphorothioate, O,O-Diethyl O-(m-tolyl) phosphorothioate.
A safened herbicide composition comprising diallate or triallate herbicide and an effective safening amount of a compound of the formula of ##STR6## wherein R and R.sup.1 independently represent hydrogen, C.sub.1-13 alkyl, nitro lower alkyl, halo lower alkyl;
- R.sup.2 is equal to phenyl, phenyl substituted by one to three C.sub.1-13 alkyl, lower alkenyl, halo, NO.sub.2, CN, CH.sub.3 S-moieties or para-amino sulfonylphenyl;
- provided that phenyl cannot be substituted with NO.sub.2 and CF.sub.3 simultaneously.
Dependencies are inferred from the claim text.