Synergistic weed control from applications of penoxsulam and acetochlor

• US 9,288,989 B2
• Filed: 02/24/2014
• Issued: 03/22/2016
• Est. Priority Date: 02/25/2013
• Status: Active Grant

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Mann, Richard K., Blanchier, Nathalie, Valle, Natalino Dalla, Larelle, Dominique
• Primary Examiner(s): PAK, JOHN D
• Application Number:
  US14/188,447
• Publication Number:
  US 20140243200A1
• Time in Patent Office: 757 Days
• US Class Current: 1/1
• CPC Class Codes: A01N 37/26 containing the group; Thio analogues thereof
• CPC Class Codes: A01N 43/90 having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system

Abstract

Disclosed herein are herbicidal compositions comprising a synergistic herbicidally effective amount of (a) penoxsulam or an agriculturally acceptable salt thereof and (b) acetochlor or an agriculturally acceptable salt thereof. Also disclosed herein are methods of controlling undesirable vegetation, which comprise applying to vegetation or an area adjacent the vegetation or applying to soil or water to prevent the emergence or growth of vegetation (a) penoxsulam or an agriculturally acceptable salt thereof and (b) acetochlor or an agriculturally acceptable salt thereof, wherein (a) and (b) are each added in an amount sufficient to produce a synergistic herbicidal effect.

Claims

1. A herbicidal composition comprising a herbicidal mixture consisting of a synergistic herbicidally effective amount of (a) penoxsulam or an agriculturally acceptable salt thereof and (b) acetochlor or an agriculturally acceptable salt thereof,

wherein the weight ratio of (a) to (b) is from 1:

460 to 1;

1.

2. The composition of claim 1, further comprising a herbicide safener.

3. The composition of claim 2, wherein the herbicide safener is selected from the group consisting of dichlormid, cloquintocet-mexyl, and combinations thereof.

4. A method of controlling undesirable vegetation which comprises applying to vegetation or an area adjacent the vegetation or applying to soil or water to control the emergence or growth of vegetation a herbicidal mixture consisting of a synergistic herbicidally effective amount of (a) penoxsulam or an agriculturally acceptable salt thereof and (b) acetochlor or an agriculturally acceptable salt thereof,

wherein (a) and (b) are applied in a weight ratio of (a) to (b) from 1:

460 to 1;

1,

and

wherein (a) is applied in an amount of from 5-20 g ai/ha and (b) is applied in an amount of from 15-2300 g ai/ha.

5. The method of claim 4, wherein (a) and (b) are applied simultaneously.

6. The method of claim 4, further comprising applying a herbicide safener.

7. The method of claim 6, wherein the herbicide safener is selected from the group consisting of dichlormid, cloquintocet-mexyl, and combinations thereof.

8. The method of claim 4, wherein the undesirable vegetation is controlled in cereals, citrus, coffee, corn, cotton, maize, onions, oilseed rape/canola, soybeans, sorghum, sugar beets, sunflower, vineyards, rice, sugarcane, bearing and non-bearing tree nuts and orchards, grasses grown for seed, pastures, grasslands, rangelands, fallow land, rights-of-way, aquatic settings, tree and vine, ornamental species, or turfgrass.

9. The method of claim 8, wherein the undesirable vegetation is controlled in rice.

10. The method of claim 8, wherein the undesirable vegetation is controlled in sorghum.

11. The method of claim 8, wherein the undesirable vegetation is controlled in corn.

12. The method of claim 4, wherein the undesirable vegetation includes a broadleaf weed, a grass weed, a sedge weed, or a combination thereof.

13. The method of claim 4, wherein the undesirable vegetation comprises a herbicide resistant or tolerant weed.

14. The method of claim 4, wherein the undesirable vegetation includes redroot pigweed, lambsquarter, field pansy, junglerice, cleavers, wild buckwheat, pale smartweed, ladysthumb, black nightshade, purple nutsedge, species of the genus Tribulus, and combinations thereof.