Synergistic weed control from applications of aminopyralid and clopyralid

• US 10,412,964 B2
• Filed: 12/14/2012
• Issued: 09/17/2019
• Est. Priority Date: 12/14/2012
• Status: Active Grant

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Brinkworth, Louise, Cummings, Daniel C., Masters, Robert A.
• Primary Examiner(s): Pak, John
• Application Number:
  US13/715,230
• Publication Number:
  US 20140171318A1
• Time in Patent Office: 2,468 Days
• Field of Search: 504103, 504130
• CPC Class Codes: A01N 43/40 six-membered rings

Abstract

Disclosed herein are herbicidal compositions comprising a synergistically herbicidal effective amount of (a) aminopyralid, or an agriculturally acceptable salt or ester thereof, and (b) clopyralid, or an agriculturally acceptable salt or ester 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) aminopyralid, or an agriculturally acceptable salt or ester thereof, and (b) clopyralid, or an agriculturally acceptable salt or ester thereof, wherein (a) and (b) are each added in an amount sufficient to produce a synergistic herbicidal effect.

Claims

1. A method of controlling undesired vegetation, which comprises applying to the undesired vegetation or an area adjacent the undesired vegetation or applying to soil or water to control the emergence or growth of the undesired vegetation a composition comprising:

1) an agriculturally acceptable adjuvant or carrier;

2) an herbicidally active ingredient consisting of (a) aminopyralid, or an agriculturally acceptable salt or ester thereof and (b) clopyralid, or an agriculturally acceptable salt or ester thereof,

wherein the acid equivalent weight ratio of (a) to (b) is from 1;

5 to 2;

1;

wherein the undesirable vegetation comprises honey mesquite; and

the aminopyralid or agriculturally acceptable salt or ester thereof is applied at a rate of 70-400 g ae/ha.

2. The method of claim 1, wherein the undesirable vegetation is controlled in CRP, fallow land, range and pasture, IVM, or tree and vine.

3. The method of claim 1, wherein the composition further comprises a herbicidal safener.

4. The method of claim 1, wherein the aminopyralid or agriculturally acceptable salt or ester thereof is applied at a rate of 75-350 g ae/ha.

5. The method of claim 1, wherein the aminopyralid or agriculturally acceptable salt or ester thereof is applied at a rate of 100-300 g ae/ha.

6. The method of claim 1, wherein the aminopyralid or agriculturally acceptable salt or ester thereof is applied at a rate of 125-250 g ae/ha.