Compositions comprising a pyridine carboxylate herbicide and protoporphyrinogen oxidase (protox) inhibitor herbicides
Inventors
Satchivi, Norbert M. • Kister, Jeremy
Assignees
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Publication Number
US-12465050-B2
Publication Date
2025-11-11
Expiration Date
Abstract
Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a protoporphyrinogen oxidase (PROTOX) inhibitor herbicide or an agriculturally acceptable salt or ester thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a protoporphyrinogen oxidase (PROTOX) inhibitor herbicide or an agriculturally acceptable salt or ester thereof.
Core Innovation
The invention relates to herbicidal compositions and methods that include (a) a pyridine carboxylate herbicide defined by Formula (I), wherein R1 is cyanomethyl or propargyl and R2 and R2′ are hydrogen, or an agriculturally acceptable salt thereof, and (b) a protoporphyrinogen oxidase (PROTOX) inhibitor herbicide selected from bifenox, saflufenacil, carfentrazone, pyraclonil, pyraflufen, and oxyfluorfen, including agriculturally acceptable salts and ester forms. The composition is characterized by a defined weight ratio of (a) in g ae to (b) in g ai from 1:100 to 15:1.
The disclosure provides a vegetation-control method that applies the same composition to vegetation, an area adjacent the vegetation, soil, or water to limit emergence or growth of vegetation. In the method, the pyridine carboxylate herbicide is applied in an amount of at least 0.1 g ae/ha and the PROTOX inhibitor herbicide is applied in an amount of at least 1 g ai/ha, while maintaining the same (a):(b) weight ratio from 1:100 to 15:1.
The disclosure further states that the pyridine carboxylate and PROTOX inhibitor can be provided as the only herbicidal active ingredients. It also describes optional formulation aspects together with the main actives, including adjuvants, carriers, safeners, and, in some instances, an additional pesticide.
Claims Coverage
The independent claims cover two aspects: a composition and a method of controlling undesirable vegetation. Across these claims, the main inventive features comprise the identity of the two herbicide components, the defined weight-ratio constraint, and, for the method, minimum applied amounts and application to vegetation, adjacent areas, soil, or water for growth-limiting purposes.
A composition with a pyridine carboxylate herbicide and a PROTOX inhibitor herbicide at a defined weight ratio
A composition comprising (a) a pyridine carboxylate herbicide defined by Formula (I) with R1 cyanomethyl or propargyl, R2 and R2′ hydrogen, and R3, R3′, R3″, and R3⁗ hydrogen, or an agriculturally acceptable salt thereof, and (b) a PROTOX inhibitor herbicide selected from bifenox, saflufenacil, carfentrazone, pyraclonil, pyraflufen, or oxyfluorfen, or agriculturally acceptable salts or agriculturally acceptable esters thereof, wherein the weight ratio of (a) in g ae to (b) in g ai is from 1:100 to 15:1.
A method of controlling undesirable vegetation using the pyridine carboxylate and PROTOX inhibitor with minimum amounts and a defined weight ratio
A method of controlling undesirable vegetation comprising applying to vegetation or an area adjacent to vegetation or applying to soil or water to limit the emergence or growth of vegetation a composition comprising (a) a pyridine carboxylate herbicide defined by Formula (I) with R1 cyanomethyl or propargyl, R2 and R2′ hydrogen, and R3, R3′, R3″, and R3⁗ hydrogen, or an agriculturally acceptable salt thereof, and (b) a PROTOX inhibitor herbicide selected from bifenox, saflufenacil, carfentrazone, pyraclonil, pyraflufen, or oxyfluorfen, or agriculturally acceptable salts or agriculturally acceptable esters thereof, wherein the pyridine carboxylate herbicide is applied in an amount of at least 0.1 g ae/ha, wherein the PROTOX inhibitor herbicide is applied in an amount of at least 1 g ai/ha, and wherein the weight ratio of (a) in g ae to (b) in g ai is from 1:100 to 15:1.
Overall, the claim set focuses on combining a Formula (I) pyridine carboxylate herbicide with one of the listed PROTOX inhibitor herbicides in a defined g ae to g ai weight-ratio window of 1:100 to 15:1, and, in the method claim, on applying the combination with specified minimum application amounts to control emergence or growth of undesirable vegetation.
Stated Advantages
Unexpectedly enhanced herbicidal effect versus single actives.
Documented Applications
Herbicidal use for controlling undesirable vegetation, including limiting emergence or growth of vegetation by applying to vegetation or adjacent areas or applying to soil or water.
Greenhouse herbicidal use contexts and greenhouse trial evaluation showing visual injury across weed species and grain crops, including observed versus expected injury and crop compatibility using a 0% to 100% injury scale.
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