HERBICIDAL COMPOSITIONS

Abstract

The present disclosure relates to herbicidal combinations and their use in controlling plants or inhibiting plant growth. In particular, herbicidal combinations comprising pyridafol in combination with at least one further herbicide that is a HPPD-inhibitor herbicide.

Claims

1.-15. (canceled)

16. A method of controlling unwanted plant growth, comprising: applying a herbicidally effective amount of a composition comprising (A) pyridafol, or agrochemically acceptable salts thereof; and (B) a HPPD-inhibitor herbicide, or agrochemically acceptable salts thereof to unwanted plants or to the locus thereof, wherein the HPPD-inhibitor herbicide is bicyclopyrone, and wherein (A) and (B) are present in a synergistic weight ratio as defined by the Colby Formula at 14 days after application.

17. A method comprising: applying a herbicidally effective amount of (A) pyridafol, or agrochemically acceptable salts thereof; and (B) a HPPD-inhibitor herbicide, or agrochemically acceptable salts thereof to unwanted plants or to the locus thereof sequentially, wherein the HPPD-inhibitor herbicide is bicyclopyrone, and wherein (A) and (B) are present in a synergistic weight ratio as defined by the Colby Formula at 14 days after application.

18. The method of claim 16, wherein the unwanted plants are monocotyledonous or dicotyledonous weeds.

19. The method of claim 18, wherein the unwanted plants are Amaranthus palmeri.

20. The method of claim 19, wherein the applying is post-emergence to the unwanted plants.

21. (canceled)

22. The method of claim 17, wherein the unwanted plants are monocotyledonous or dicotyledonous weeds.

23. The method of claim 22, wherein the unwanted plants are Amaranthus palmeri.

24. The method of claim 23, wherein the applying is post-emergence to the unwanted plants.

25. The method of claim 16, wherein the weight ratio of (A) to (B) is 20:1 to 1:20.

26. The method of claim 16, wherein the weight ratio of (A) to (B) is about 12:1 to about 1:4.

27. The method of claim 16, wherein the weight ratio of (A) to (B) is 12:1 to 1:4.

28. The method of claim 16, wherein the weight ratio of (A) to (B) is 11.7:1 to 1:4.

29. The method of claim 16, wherein the weight ratio of (A) to (B) is not 1:1.

30. The method of claim 16, wherein the composition further comprises an agriculturally acceptable formulation adjuvant.

31. The method of claim 16, wherein the composition further comprises at least one pesticide.

32. The method of claim 17, wherein the weight ratio of (A) to (B) is 20:1 to 1:20.

33. The method of claim 17, wherein the weight ratio of (A) to (B) is about 12:1 to about 1:4.

34. The method of claim 17, wherein the weight ratio of (A) to (B) is 12:1 to 1:4.

35. The method of claim 17, wherein the weight ratio of (A) to (B) is 11.7:1 to 1:4.

36. The method of claim 17, wherein the weight ratio of (A) to (B) is not 1:1.

Description

BIOLOGICAL EXAMPLES

[0060] Seeds of Amaranthus palmeri (AMAPA) were sown in vero beach potting soil and grown in a greenhouse. The herbicides, alone and in combination, were applied post-emergence when the weeds were 3 to 4-inches along with adjuvants 2.5% v/v AMSOL® and 1% v/v AgriDex® using a spray TT110015 nozzle providing 15 gallons/acre. Percent control evaluations were performed at 7, 14, and 21 days after application. The compositions evaluated are provided in Tables 1 and 2:

TABLE-US-00001 TABLE 1 Observed Observed Observed Herbicide Rates (g control control control Herbicide 1 2 ai/ha) Ratio 7DAA 14DAA 21DAA Mesotrione 10 1:0 75 63 62 Bicyclopyrone 10 1:0 72 60 57 Pyridafol 2.5 0:1 0 0 0 Pyridafol 5 0:1 0 0 0 Pyridafol 10 0:1 0 0 0 Pyridafol 27 0:1 5 2 0 Pyridafol 57 0:1 17 10 3 Pyridafol 87 0:1 23 15 13 Pyridafol 117 0:1 23 17 7

TABLE-US-00002 TABLE 2 Expected Observed Expected Observed Expected Observed Rates (g Control control Control control Control control Composition ai/ha) Ratio 7DAA 7DAA 14DAA 14DAA 21DAA 21DAA Mesotrione + 10 + 2.5 4:1 75% 78% 63% 73% 62% 70% Pyridafol Mesotrione + 10 + 5 2:1 75% 85% 63% 87% 62% 83% Pyridafol Mesotrione + 10 + 10 1:1 .1 75% 87% 63% 78% 62% 73% Pyridafol Mesotrione + 10 + 27 1:2.7 76% 93% 64% 92% 62% 88% Pyridafol Mesotrione + 10 + 57 1:5.7 79% 96% 67% 97% 63% 88% Pyridafol Mesotrione + 10 + 87 1:8.7 81% 100%  69% 100%  67% 100%  Pyridafol Mesotrione + 10 + 117 1:11.7 81% 99% 69% 100%  65% 100%  Pyridafol Bicyclopyrone + 10 + 2.5 4:1 72% 75% 60% 65% 57% 62% Pyridafol Bicyclopyrone + 10 + 5 2:1 72% 70% 60% 67% 57% 60% Pyridafol Bicyclopyrone + 10 + 10 1:1 72% 70% 60% 53% 57% 55% Pyridafol Bicyclopyrone + 10 + 27 1:2.7 73% 87% 61% 80% 57% 75% Pyridafol Bicyclopyrone + 10 + 57 1:5.7 77% 83% 64% 65% 58% 62% Pyridafol Bicyclopyrone + 10 + 87 1:8.7 78% 92% 66% 85% 63% 78% Pyridafol Bicyclopyrone + 10 + 117 1:11.7 78% 96% 67% 97% 60% 93% Pyridafol