2-Substituted-4-alkyl or trihaloalkyl-5-oxazolecarboxylic acids as safening agents
AssigneeMonsanto Company
InventorsRobert K. Howe, Len F. Lee
Life of this patent
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Abstract
Derivatives of 2-substituted-4-alkyl or trihaloalkyl-5-oxazolecarboxylic acid have been found to be effective in reducing herbicidal injury to crop plants caused by thiocarbamate and acetanilide herbicides, and especially in reducing herbicidal injury to rice, sorghum or wheat crops, especially rice and sorghum, caused by triallate, alachlor and butachlor herbicides.
Claims11
A method of reducing injury to rice plants due to application thereto of butachlor herbicide which comprises applying to the plant locus a safening effective amount of a compound having the formula ##STR2## wherein R is hydrogen, alkyl containing 1 to 5 carbon atoms or agriculturally acceptable cations;
- R.sub.1 is alkyl containing 1 to 5 carbon atoms or trifluoromethyl;
- R.sub.2 is halogen.
A mixture which comprises a herbicidally effective amount of butachlor herbicide and a safening effective amount of a compound having the formula ##STR3## wherein R is hydrogen, alkyl containing 1 to 5 carbon atoms or agriculturally acceptable cations;
- R.sub.1 is alkyl containing 1 to 5 carbon atoms or trifluoromethyl;
- R.sub.2 is halogen.
Dependencies are inferred from the claim text.