A pesticidal bactericidal composition, water dispersible granule, preparation method and application thereof

Abstract

The present invention discloses a pesticidal bactericidal composition, a water dispersible granule, a preparation method and an application thereof, relating to the field of pesticides. The active ingredients in the pesticidal bactericidal composition include chlorothalonil, tebuconazole and picoxystrobin. The weight ratio of chlorothalonil, tebuconazole and picoxystrobin is (10-50):(1-2):1, optionally (10-20):(1-6):(1-3), optionally (10-20):(1-2):1 or 10:6:3. The ternary compound composition of the present invention has a synergistic effect in preventing and controlling plant diseases, and the control effect reaches more than 90% in the prevention and control of grape downy mildew and wheat powdery mildew. The composition ratio of the present invention patent can better play the role of drug synergism, reduce the amount of drug used and improve the drug efficacy.

Claims

1. A pesticidal bactericidal composition, characterized in that, the active ingredients in the pesticidal bactericidal composition include chlorothalonil, tebuconazole, and picoxystrobin, and the weight ratio of chlorothalonil, tebuconazole, and picoxystrobin is (10~20):(1~6):(1~3).

2. The pesticidal bactericidal composition according to claim 1, characterized in that, the weight ratio of chlorothalonil, tebuconazole, and picoxystrobin is (10~20):(1~2):

1.

3. The pesticidal bactericidal composition according to claim 1, characterized in that, the weight ratio of chlorothalonil, tebuconazole, and picoxystrobin is 10:6:

3.

4. The pesticidal bactericidal composition according to claim 1, characterized in that, the weight ratio of chlorothalonil, tebuconazole, and picoxystrobin is (18~20):2:

1.

5. The pesticidal bactericidal composition according to claim 1, characterized in that, the weight ratio of chlorothalonil, tebuconazole, and picoxystrobin is 10:1:

1.

6. The pesticidal bactericidal composition according to claim 1, characterized in that, the weight ratio of chlorothalonil, tebuconazole, and picoxystrobin is 20:2:

1.

7. The pesticidal bactericidal composition according to claim 1, characterized in that, the weight ratio of chlorothalonil, tebuconazole, and picoxystrobin is 18:2:

1.

8. The pesticidal bactericidal composition according to claim 1, characterized in that, the weight ratio of chlorothalonil and tebuconazole is (9~10):

1.

9. The pesticidal bactericidal composition according to claim 1, characterized in that, the active ingredients account for 1~99% of the total weight of the composition.

10. The pesticidal bactericidal composition according to claim 1, characterized in that, the active ingredients account for 20%~80% of the total weight of the composition.

11. The pesticidal bactericidal composition according to claim 1, characterized in that, the active ingredients account for 30%~70% of the total weight of the composition.

12. The pesticidal bactericidal composition according to claim 1, characterized in that, the active ingredients account for 50%~70% of the total weight of the composition.

13. The pesticidal bactericidal composition according to claim 1, characterized in that, the active ingredients account for 38%~63.3% of the total weight of the composition.

14. The pesticidal bactericidal composition according to claim 1, characterized in that, the dosage form of the pesticidal bactericidal composition is one or several of emulsifiable concentrate, microcapsule suspension-suspension agent, suspension emulsion, emulsion in water, microemulsion, solution agent or wettable powder.

15. The pesticidal bactericidal composition according to claim 14, characterized in that, the pesticidal bactericidal composition further comprises auxiliaries.

16. The pesticidal bactericidal composition according to claim 15, characterized in that, the auxiliaries are selected from one or more of dispersant, wetting agent, emulsifier, solvent, cosolvent, antifreezing agent, chelating agent, disintegrant, stabilizer, preservative, thickening agent, binder, defoaming agent, acid-adjusting medium, alkali-adjusting medium and solid inert carrier.

17. The pesticidal bactericidal composition according to claim 16, characterized in that, The dispersant is one or more of sodium styrene acrylate copolymer, methylnaphthalene sulfonic acid formaldehyde condensate sulfate, sodium naphthalene sulfonic acid formaldehyde condensate, sodium methylene naphthalene sulfonate dibutylnaphthalene sulfonic acid formaldehyde condensate, N-methyl fatty acyl taurine sodium salt, alkylnaphthalene sulfonate formaldehyde condensate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, and sodium lignosulfonate.

18. The pesticidal bactericidal composition according to claim 16, characterized in that in the dispersant, the weight ratio of sodium styrene acrylate copolymer to sodium lignosulfonate is (1-2):

1.

19. The pesticidal bactericidal composition according to claim 16, characterized in that in the dispersant, the weight ratio of sodium styrene acrylate copolymer to sodium lignosulfonate is 1:

1.

20. The pesticidal bactericidal composition according to claim 16, characterized in that the wetting agent is one or more of sodium dodecyl sulfate, methyl a-sulfo fatty acid ester, sodium tetradecyl sulfate, sodium dodecylbenzenesulfonate, alkylnaphthalene sulfonate, a-olefin sulfonate, polymer of olefin and maleic anhydride, sodium alkylphenol polyoxyethylene ether sulfate, sodium diisobutylnaphthalene sulfonate, fatty acid sulfate, and fatty acid ester sulfate.

21. The pesticidal bactericidal composition according to claim 16, characterized in that the wetting agent is polymer of olefin and maleic anhydride and / or sodium diisobutylnaphthalene sulfonate.

22. The pesticidal bactericidal composition according to claim 16, characterized in that the chelating agent is one or more selected from sodium tripolyphosphate, sodium gluconate, sodium pyrophosphate, and disodium ethylenediaminetetraacetate.

23. The pesticidal bactericidal composition according to claim 16, characterized in that the chelating agent is disodium ethylenediaminetetraacetate and / or sodium tripolyphosphate.

24. The pesticidal bactericidal composition according to claim 16, characterized in that the disintegrant is one or more of urea, sodium sulfate, ammonium sulfate, calcium chloride, potassium dihydrogen phosphate, and diammonium hydrogen phosphate.

25. The pesticidal bactericidal composition according to claim 16, characterized in that the disintegrant is diammonium hydrogen phosphate and / or ammonium sulfate.

26. The pesticidal bactericidal composition according to claim 16, characterized in that the filler includes one or more of talc powder, corn starch, kaolin, white carbon black, and diatomaceous earth.

27. The pesticidal bactericidal composition according to claim 16, characterized in that the filler is talc powder and / or kaolin.

28. The pesticidal bactericidal composition according to any one of claims 16 to 27, characterized in that the weight ratio of the adjuvants including the dispersant, wetting agent, chelating agent, and disintegrant is (5-20):(3-8):3:(5-30).

29. The pesticidal bactericidal composition according to claim 16, characterized in that the weight ratio of the adjuvants including the dispersant, wetting agent, chelating agent, and disintegrant is (9-15):(4-8):3:(10-25).

30. The pesticidal bactericidal composition according to claim 16, characterized in that the weight ratio of the adjuvants including the dispersant, wetting agent, chelating agent, and disintegrant is (9-10):4:3:(10-20).

31. The pesticidal bactericidal composition according to claim 16, characterized in that the weight ratio of the auxiliary agents including a dispersant, a wetting agent, a chelating agent and a disintegrant is 10:4:3:

20.

32. The pesticidal bactericidal composition according to claim 28, characterized in that it further comprises a filler.

33. A pesticidal bactericidal water dispersible granule, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 10-60%, tebuconazole 1-10%, picoxystrobin 1-10%, dispersant 6-10%, wetting agent 2-6%, chelating agent 2-4%, disintegrant 10-20%, and filler to make up 100%.

34. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 30-60%, tebuconazole 1-10%, picoxystrobin 1-10%, dispersant 9-10%, wetting agent 3-5%, chelating agent 3-4%, disintegrant 10-20%, and filler to make up 100%.

35. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 30-60%, tebuconazole 1-10%, picoxystrobin 1-10%, dispersant 9-10%, wetting agent 4%, chelating agent 3%, disintegrant 10-20%, and filler to make up 100%.

36. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 30-54%, tebuconazole 1-6%, picoxystrobin 1-5%, dispersant 9-10%, wetting agent 4%, chelating agent 3%, disintegrant 10-20%, and filler to make up 100%.

37. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 30-54%, tebuconazole 1-6%, picoxystrobin 1-3.3%, dispersant 9-10%, wetting agent 4%, chelating agent 3%, disintegrant 10-20%, and filler to make up 100%.

38. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 30-60%, tebuconazole 1-10%, picoxystrobin 1-10%, dispersant 10%, wetting agent 4%, chelating agent 3%, disintegrant 20%, and filler to make up 100%.

39. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 30-54%, tebuconazole 1-6%, picoxystrobin 1-5%, dispersant 10%, wetting agent 4%, chelating agent 3%, disintegrant 20%, and filler to make up 100%.

40. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that it comprises raw materials in the following weight fractions: chlorothalonil 50-54%, tebuconazole 1-6%, picoxystrobin 1-3.3%, dispersant 10%, wetting agent 4%, chelating agent 3%, disintegrant 20%, and filler to make up 100%.

41. The pesticidal bactericidal water dispersible granule according to claim 33, characterized in that It comprises raw materials with the following weight fractions: chlorothalonil 54%, tebuconazole 6%, picoxystrobin 3.3%, dispersant 10%, wetting agent 4%, chelating agent 3%, disintegrant 20%, and filler to make up 100%.

42. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the dispersant is one or more of sodium styrene acrylate copolymer, methylnaphthalenesulfonic acid formaldehyde condensate sulfate, sodium naphthalenesulfonic acid formaldehyde condensate, sodium methylene naphthalene sulfonate dibutylnaphthalenesulfonic acid formaldehyde condensate, N-methyl fatty acyl taurate, alkylnaphthalenesulfonate formaldehyde condensate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, and sodium lignosulfonate.

43. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, in the dispersant, the weight ratio of sodium styrene acrylate copolymer to sodium lignosulfonate is (1-2):

1.

44. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, in the dispersant, the weight ratio of sodium styrene acrylate copolymer to sodium lignosulfonate is 1:

1.

45. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the wetting agent is one or more of sodium dodecyl sulfate, methyl α-sulfo fatty acid ester, sodium tetradecyl sulfate, sodium dodecylbenzenesulfonate, sodium alkylnaphthalenesulfonate, α-olefin sulfonate, polymer of olefin and maleic anhydride, sodium alkylphenol polyoxyethylene ether sulfate, sodium diisobutylnaphthalenesulfonate, fatty acid sulfate, and fatty acid ester sulfate.

46. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the wetting agent is polymer of olefin and maleic anhydride and / or sodium diisobutylnaphthalenesulfonate.

47. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the chelating agent is one or more selected from sodium tripolyphosphate, sodium gluconate, sodium pyrophosphate, and disodium ethylenediaminetetraacetate.

48. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the chelating agent is disodium ethylenediaminetetraacetate and / or sodium tripolyphosphate.

49. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the disintegrant is one or more of urea, sodium sulfate, ammonium sulfate, calcium chloride, potassium dihydrogen phosphate, and diammonium hydrogen phosphate.

50. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the disintegrant is diammonium hydrogen phosphate and / or ammonium sulfate.

51. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the filler comprises one or more of talcum powder, corn starch, kaolin, white carbon black, and diatomite.

52. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, the filler is talcum powder and / or kaolin.

53. The water dispersible granule for pesticide bactericidal use according to any one of claims 33 to 41, characterized in that, The weight ratio of the dispersant, wetting agent, chelating agent and disintegrant is (5 to 20):(3 to 8):3:(5 to 30).

54. The pesticidal bactericidal water-dispersible granule according to any one of claims 33 to 41, characterized in that the weight ratio of the dispersant, wetting agent, chelating agent and disintegrant is (9 to 15):(4 to 8):3:(10 to 25).

55. The pesticidal bactericidal water-dispersible granule according to any one of claims 33 to 41, characterized in that the weight ratio of the dispersant, wetting agent, chelating agent and disintegrant is (9 to 10):4:3:(10 to 20).

56. The pesticidal bactericidal water-dispersible granule according to any one of claims 33 to 41, characterized in that the weight ratio of the dispersant, wetting agent, chelating agent and disintegrant is 10:4:3:

20.

57. A method for preparing the pesticidal bactericidal composition according to any one of claims 1 to 32 or the pesticidal bactericidal water-dispersible granule according to any one of claims 33 to 56, characterized in that it includes: Mix chlorothalonil, tebuconazole, picoxystrobin and auxiliary agents evenly, carry out ultrafine air-flow comminution to obtain fine powder, mix the obtained fine powder with water and then carry out kneading, and carry out extrusion granulation and drying after kneading to obtain the water-dispersible granule product of chlorothalonil, tebuconazole and picoxystrobin.

58. The preparation method according to claim 57, characterized in that the fineness of the fine powder after ultrafine air-flow comminution is 400 to 800 meshes.

59. The preparation method according to claim 57, characterized in that the water addition amount in the fine powder is 16-22% of the total mass of the materials.

60. The preparation method according to claim 57, characterized in that the drying temperature after granulation is drying at 45-55 °C.

61. Application of the water-dispersible granule prepared by the pesticidal bactericidal composition according to any one of claims 1 to 32, or the pesticidal bactericidal water-dispersible granule according to any one of claims 33 to 56, or the preparation method according to any one of claims 57 to 60 in controlling farmland plant diseases.

62. The application according to claim 61, characterized in that the plant diseases include one or more of downy mildew, powdery mildew, gray mold and rust.

63. The application according to claim 61, characterized in that the plant diseases include one or more of grape downy mildew, wheat powdery mildew and soybean rust.

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