Method of controlling weeds in conifers
AssigneeE. I. Du Pont de Nemours and Company
InventorsGeorge Levitt, Russell C. Weigel, Jr.
Life of this patent
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Abstract
The application of certain sulfonylurea compounds to stands of conifer plants such as loblolly pine controls undesired vegetation without adverse effects on the conifers. These compounds have the formula: ##STR1## wherein R is Cl or CO.sub.2 R.sub.2 where R.sub.2 is C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.4 alkenyl, CH.sub.2 CH.sub.2 OCH.sub.3 or CH.sub.2 CH.sub.2 Cl; R.sub.1 is H or CH.sub.3 ; X is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5 or CH.sub.2 OCH.sub.3 ; Y is CH.sub.3 or OCH.sub.3 ; and Z is CH or N; or an agriculturally acceptable salt thereof.
Claims6
A method for controlling undesired vegetation in conifers comprising:
- applying to the locus of said conifers an effective amount of a compund of the formula:
- ##STR4## wherein R is CO.sub.2 R.sub.2 where R.sub.2 is C.sub.1 -C.sub.4 alkyl;
- R.sub.1 is H or CH.sub.3 ;
- X is CH.sub.3, or OCH.sub.3 ;
- Y is CH.sub.3 or OCH.sub.3 ;
- and
- Z is CH;
- or
- an agriculturally acceptable salt thereof.
Dependencies are inferred from the claim text.