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# United States Patent c191 

# Young 

# [54] SYSTEMIC HERBICIDES AND METHODS OF USE 

[75] Inventor: Donald C. Young, Fullerton, Calif. 

[73] Assignee: Union Oil Company of California, Los Angeles, Calif. 

[21) Appl. No.: 707,322 

[22] Filed: Dec. 27, 1990 

[63] Continuation of Ser. No. 116,472, Nov. 3, 1987, Pat. No. 4,994,101, which is a continuation-in-part of Ser. No. 442,296, Nov. 17, 1982, abandoned, and a con› tinuation-in-part of Ser. No. 453,496, Dec. 27, 1982, Pat. No. 4,910,179. 

[51] Int. Cl. 5 $_{............................................. }$AOlN 57/12 

[52] U.S. Cl . .................................... 504/127; 504/130; 504/133; 504/137; 504/143; 504/148; 504/149; 504/140 

[58] Field of Search ................... 71/79, 83, 86, 98, 99, 71/118, 119; 504/127, 130, 133, 137, 143, 148, 149 

## [56] References Cited 

<img src='content_image/926277.jpg'>

New Weed Management Practices In Orchards, Neil H. Phillips, Proceedings, 36 Annual California Weed Con› ference, Jan. 16-19, 1984. 

## Related U.S. Application Data 

## U.S. PATENT DOCUMENTS 

## OTHER PUBLICATIONS 

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# [11] Patent Number: 5,288,692 

# [45] Date of Patent: Feb. 22, 1994 

Federal Register Notice of Mar. 13, 1985, pp. 10006-10007, "Monourea-Sulfuric Acid Adduct". CA 102:41512m, Comparative Phytotoxicity of Gly› phosate, SC-0224, SC-0545, and HOE-00661, Carlson and Burnside, Weed Science, 1984, 32, 841-844. CA 89:158688c, "Complexing Agents as Herbicide Ad› ditives," Turner and Loader, Weed Research, 1978, 18, 199-207. 

Primary Examiner-Glennon H. Hollrah 

Assistant Examiner-Brian M. Burn 

Attorney, Agent, or Firm-Michael H. Laird; Yale S. 

Finkle; Gregory F. Wirzbicki 

## [57] ABSTRACT 

Herbicidal compositions having systemic herbicidal activity comprise solutions containing one or more systemic herbicides and an amount of an amide and sulfuric acid of the following formula sufficient to ac› centuate the activity of the systemic herbicide: 

wherein X is chalcogen, and each of R1, R2 and R3 is independently selected from hydrogen and organic radicals. As used herein, "amide" encompasses all com› pounds of formula (1) regardless of the chalcogen em› ployed. The molar ratio of amide to sulfuric acid is usually within the range of about i to less than 2 so that at least some of the sulfuric acid is present as the monoa› mide-sulfuric acid adduct. The monoamide adduct also acts as a contact herbicide and thereby assists in the immediate control of treated vegetation. Solid composi› tions comprising combinations of systemic herbicides, sulfuric acid and the useful amides, with and without surfactants, and methods of using the solutions are also disclosed. 

US005288692A 

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## 29 ClaiJns, No Drawings 

