Herbicidal pyridine sulfonamide

• US 5,393,734 A
• Filed: 09/03/1993
• Issued: 02/28/1995
• Est. Priority Date: 03/07/1991
• Status: Expired due to Fees

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Liang, Paul H., Andrea, Tarig A.
• Primary Examiner(s): Ford, John M.
• Application Number:
  US08/108,694
• Time in Patent Office: 543 Days
• Field of Search: 504/215, 504/, 544/320
• US Class Current: 504/215
• CPC Class Codes: A01N 47/36 containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
• CPC Class Codes: C07D 521/00 Heterocyclic compounds containing unspecified hetero rings

Abstract

A pyridine sulfonylurea herbicide, composition thereof and a method for its use that results in the control of blackgrass in cereal crops and general control of all plant growth.

Claims

1. A compound of the formula ##STR15## and its agriculturally suitable salts, hydrates and complexes with C₁ -C₄ alcohols.

2. The compounds of claim 1 which are agriculturally suitable salts of the compound of Formula I.

3. The compounds of claim 1 wherein the salt is sodium.

4. An agriculturally suitable composition for controlling the growth of undesired vegetation comprising an effective amount of the compound of claim 1 and at least one of the following:

surfactant, solid or liquid diluent.

5. An agriculturally suitable composition for controlling the growth of undesired vegetation comprising an effective amount of the compound of claim 2 and at least one of the following:

surfactant, solid or liquid diluent.

6. An agriculturally suitable composition for controlling the growth of undesired vegetation comprising an effective amount of the compound of claim 3 and at least one of the following:

surfactant, solid or liquid diluent.

7. A method for controlling the growth of undesired vegetation which comprises adding to the locus to be protected an effective amount of a compound of claim 1.

8. A method for controlling the growth of undesired vegetation in cereal crops which comprises adding to the locus to be protected an effective amount of a compound of claim 1.

9. A method for controlling the growth of blackgrass which comprises applying to the locus to be protected an effective amount of a compound of claim 1.

10. A method for controlling the growth of blackgrass which comprises applying to the locus to be protected an effective amount of a compound of claim 3.