SELECTIVE WEED CONTROL METHODS

• US 20140213456A1
• Filed: 01/24/2014
• Published: 07/31/2014
• Est. Priority Date: 01/25/2013
• Status: Active Grant

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Degenhardt, Rory, McGregor, Bill, Satchivi, Norbert M., Weimer, Monte R., Juras, Len, Nott, Peter
• Granted Patent: US 11,109,592 B2
• Time in Patent Office: Days
• US Class Current: 504/260
• CPC Class Codes: A01N 43/40 six-membered rings

Abstract

4-Amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid and agriculturally acceptable esters or salts thereof are used in methods for selective post-emergent control of undesirable vegetation in the presence of sunflowers, sorghum, yellow mustard, spring Juncea canola, spring kale, spring turnip, spring rutabaga, spring Winfred forage brassica, or sugar beet.

Claims

1. A method for the selective post-emergent control of undesirable vegetation in the presence of a crop selected from the group consisting of sunflowers, sorghum, yellow mustard, spring Juncea canola, spring kale, spring turnip, spring rutabaga, spring Winfred forage brassica, or sugar beet which comprises applying a herbicidally effective amount of 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid or an agriculturally acceptable ester or salt thereof.

2. The method of claim 1, wherein said 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid or agriculturally acceptable ester or salt thereof is applied at a rate of up to 10 g ae/ha.

3. The method of claim 1, wherein said 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid or agriculturally acceptable ester or salt thereof is applied at a rate of up to 5 g ae/ha.

4. The method of claim 1, wherein said 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid or agriculturally acceptable ester or salt thereof is applied at a rate of up to 2.5 g ae/ha.

5. The method of claim 1, wherein the crop is sunflowers.

6. The method of claim 1, wherein the crop is sorghum.

7. The method of claim 1, wherein the crop is yellow mustard.

8. The method of claim 1, wherein the crop is spring Juncea canola.

9. The method of claim 1, wherein the crop is spring kale.

10. The method of claim 1, wherein the crop is spring turnip.

11. The method of claim 1, wherein the crop is spring rutabaga.

12. The method of claim 1, wherein the crop is spring Winfred forage brassica.

13. The method of claim 1, wherein the crop is sugar beet.

14. The method of claim 1, wherein the undesirable vegetation is selected from the group consisting of cleavers (Galium aparine), chickweed (Stellaria media), pigweed (Amaranthus spp.), hempnettle (Galeopsis tetrahit), lambquarters (Chenopodium album), fumitory (Fumaria spp.), fleabane (Conyza spp.), Mexican pricklepoppy (Argemone mexicana), geranium species (Geranium spp.), ragweed (Ambrosia spp.), stork'"'"'s-bill (Erodium cicutarium), mallow (Malva spp.), volunteer flax (Linum usitatissimum), volunteer alfalfa (Medicago sativa) and deadnettle (Lamium spp.).