Composite pesticide containing cyenopyrafen, diafenthiuron and synergist

Abstract

The invention relates to the technical field of pest control, and particularly provides a composite pesticide containing cyenopyrafen, diafenthiuron and a synergist. The compound pesticide containing the cyenopyrafen, the diafenthiuron and the synergist is prepared from the following components in percentage by mass: 15 to 25 percent of the cyenopyrafen, 25 to 35 percent of the diafenthiuron, 5 to 15 percent of a wetting dispersant, 5 to 15 percent of the synergist, 1 to 5 percent of an anti-freezing agent, 0.1 to 1 percent of a thickening agent, 0.1 to 0.3 percent of a de-foaming agent and 0.1 to 1 percent of a synergist. 0.5% of a preservative and the balance of pure water. Experiments show that when the diafenthiuron, the cyenopyrafen and the synergist M-990 are prepared according to the specific mass ratio and matched with other components of the pesticide composition, the pesticide composition has a better pesticide effect than single use of the cyenopyrafen and the diafenthiuron at a lower dosage for a longer time.

Description

Technical Field

[0001] The present invention relates to the technical field of pest control, and in particular to a compound pesticide containing cyenopyrafen, diafenthiuron and synergist. Background Art

[0002] In recent years, the losses caused by phytophagous mites have become increasingly serious. Chemical control is an important means for preventing and controlling pests in agriculture. However, traditional pesticides have poor efficacy at low concentrations and short duration, and simply increasing the concentration will lead to continuous enhancement of the resistance of crop mites, and even damage the environment and ecological balance.

[0003] Therefore, there is a need for a pesticide with good efficacy and long duration at low concentrations. Summary of the Invention

[0004] In order to solve the above problems, the object of the present invention is to provide a compound pesticide containing cyenopyrafen, diafenthiuron and synergist, including compound pesticide 1 containing cyenopyrafen, diafenthiuron and synergist, including 15-25% by mass of cyenopyrafen, 25-35% by mass of diafenthiuron, 5-15% by mass of wetting and dispersing agent, 5-15% by mass of synergist, 1-5% by mass of antifreeze, 0.1-1% by mass of thickener, 0.1-0.3% by mass of defoamer, 0.1-0.5% by mass of preservative and pure water to make up the remaining mass.

[0005] Further, the synergist is M-990.

[0006] Further, the wetting and dispersing agent is one or more of acrylic copolymer LURAMUL GCP 01, polycarboxylate dispersant LUCRAMUL SCP, block polyether dispersant LURAMUL BEPO 1, naphthalene sulfonate dispersant LURAMULDAC 230, compound wetting and dispersing agent LURAMUL 483, phosphate ester dispersant LURAMUL PPS A16, sulfate dispersant LURAMUL SPS16, EO-PO block copolymer LURAMUL EPC 07, styrene and maleic anhydride copolymer TERSPERSE 2612, lignin sulfonate REAX 88A.

[0007] Further, the wetting and dispersing agent is 5% by mass of compound wetting and dispersing agent LURAMUL 483, 4% by mass of naphthalene sulfonate dispersant LURAMULDAC 230 and 3% by mass of polycarboxylate dispersant LUCRAMULSCP.

[0008] Further, the antifreeze is one or more of propylene glycol, glycerol, ethylene glycol.

[0009] Further, the preservative is Kathon and / or copper benzisothiazolinone.

[0010] Further, the thickener is xanthan gum and / or aluminum magnesium silicate.

[0011] Further, the defoamer is silicone 1572.

[0012] Further, the preservative is Kathon.

[0013] Further, the compound pesticide containing cyenopyrafen, diafenthiuron and synergist includes cyenopyrafen with a mass fraction of 20%, diafenthiuron with a mass fraction of 30%, compound wetting and dispersing agent LURAMUL 483 with a mass fraction of 5%, naphthalene sulfonate dispersing agent LURAMULDAC 230 with a mass fraction of 4%, polycarboxylate dispersing agent LUCRAMULSCP with a mass fraction of 3%, M-990 with a mass fraction of 10%, ethylene glycol with a mass fraction of 4%, xanthan gum with a mass fraction of 0.2%, silicone 1572 with a mass fraction of 0.2%, Kathon with a mass fraction of 0.3% and pure water to make up the remaining mass.

[0014] The present invention can bring the following beneficial effects: Through experiments, it is found that when diafenthiuron, cyenopyrafen and synergist M-990 are formulated according to the specific mass ratio of the present invention and combined with other components of the present invention, at a lower dose and for a longer time, it has a more excellent pesticidal effect than using cyenopyrafen and diafenthiuron alone. The addition of synergist M-990 can greatly dissolve the wax layer of plants and phytophagous mites, increase the penetration rate of cyenopyrafen and diafenthiuron, improve the pesticidal effect, reduce the use concentration of pesticides and environmental pollution, and achieve the goal of good pesticidal effect and long duration at a low concentration. Detailed implementation manners

[0015] Herein, in order to more clearly explain the overall concept of the present invention, the overall solution of the present invention will be described in detail by way of examples below; in the following description, a large number of specific details are given to provide a more thorough understanding of the present invention; however, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details; in other examples, in order to avoid confusion with the present invention, some well-known technical features in the art are not described.

[0016] In the present invention: M-990 was purchased from Wengkel Chemical Co., Ltd.; the silicone-based 1572 was specifically the Momentive SAG1572 silicone defoamer; the sand mill was the SFJ-400 multi-purpose sand grinding, dispersing and stirring machine with a stable working speed of 4000 rpm; the laser particle size analyzer was the Bettersize2600 laser particle size analyzer.

[0017] Unless otherwise specified, each raw material component in the following examples can be obtained through commercial channels, and the experimental instruments used are all conventional laboratory experimental instruments, and the performance testing methods are known testing methods in the art.

[0018] The preferred embodiments are as follows: Example 1: The components for preparing the compound pesticide containing cyenopyrafen, diafenthiuron and synergist are as follows: Cyenopyrafen with a mass fraction of 20%, diafenthiuron with a mass fraction of 30%, compound wetting and dispersing agent LURAMUL 483 with a mass fraction of 5%, naphthalene sulfonate dispersant LURAMULDAC 230 with a mass fraction of 4%, polycarboxylate dispersant LUCRAMUL SCP with a mass fraction of 3%, M-990 with a mass fraction of 10%, ethylene glycol with a mass fraction of 4%, xanthan gum with a mass fraction of 0.2%, silicone-based 1572 with a mass fraction of 0.2%, cefoperazone with a mass fraction of 0.3% and pure water to make up the remaining mass; The compound pesticide containing cyenopyrafen, diafenthiuron and synergist was prepared by the following method: Mix xanthan gum and cefoperazone to obtain mixture A; mix cyenopyrafen, diafenthiuron, LURAMUL 483, LURAMULDAC 230, LUCRAMUL SCP, ethylene glycol and pure water and homogenize, then grind with a sand mill at 15 °C in a cycle until the particle size D98 of the material is 5 ± 0.5 μm to obtain mixture B; stir and mix mixture A, mixture B and silicone-based 1572 evenly to obtain the cyenopyrafen-diafenthiuron suspension; add M-990 to the cyenopyrafen-diafenthiuron suspension and stir evenly to obtain the compound pesticide containing cyenopyrafen, diafenthiuron and synergist.

[0019] Comparative Examples 1-13: The difference between Comparative Example 1 and Example 1 is only that the mass fraction of cyenopyrafen is 30%; The difference between Comparative Example 2 and Example 1 is only that the mass fraction of diafenthiuron is 40%; The difference between Comparative Example 3 and Example 1 is only that the mass fraction of the three dispersants is 20%; The difference between Comparative Example 4 and Example 1 is only that the mass fraction of M-990 is 20%; The difference between Comparative Example 5 and Example 1 is only that the mass fraction of ethylene glycol is 10%; The difference between Comparative Example 6 and Example 1 is only that the mass fraction of xanthan gum is 3%; The difference between Comparative Example 7 and Example 1 is only that the mass fraction of silicone-based 1572 is 1%; The difference between Comparative Example 8 and Example 1 is only that the mass fraction of Kathon is 1.5%; The difference between Comparative Example 9 and Example 1 is only that LURAMUL 483 and LURAMULDAC 230 are replaced with LUCRAMUL SCP in the same mass ratio as in Example 1; The difference between Comparative Example 10 and Example 1 is only that cyenopyrafen is replaced with diafenthiuron of the same mass; The difference between Comparative Example 11 and Example 1 is only that diafenthiuron is replaced with cyenopyrafen of the same mass; The difference between Comparative Example 12 and Example 1 is only that M-990 is replaced with pure water of the same mass; The difference between Comparative Example 13 and Example 1 is only that the components other than cyenopyrafen, diafenthiuron and M-990 are replaced with pure water of the same mass.

[0020] The pesticides prepared in the above examples were diluted 100 times with pure water, and the control effects were tested according to the "GB T 17980.7-2000 Pesticide Field Efficacy Test Guidelines (I) Acaricides for Controlling Apple Spider Mites" to represent the drug efficacy. Among them, 0.2 kg of the diluted pesticide of one example was sprayed on each fruit tree; the control effects on the 3rd, 7th, 15th and 21st days after the drug application were calculated and recorded, in %, with two decimal places after the decimal point, and the results are shown in Table 1.

[0021] Table 1: Detection results of the control effects of each example:

[0022] It can be seen from the data in Table 1 that compared with other examples, the control effects of the pesticides in the examples of the present invention, especially Example 1 of the present invention, on the 3rd, 7th, 15th and 21st days after the drug application are better, and the gap is obvious after 21 days, indicating that the examples of the present invention, especially Example 1 of the present invention, have good drug efficacy at a lower concentration and a long duration.

[0023] The above are only the embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A composite pesticide containing cypermethrin, diafenthiuron and a synergist, characterized in that: The composite pesticide containing cypermethrin, diafenthiuron and a synergist comprises cypermethrin with a mass fraction of 15-25%, diafenthiuron with a mass fraction of 25-35%, a wetting and dispersing agent with a mass fraction of 5-15%, a synergist with a mass fraction of 5-15%, an antifreeze agent with a mass fraction of 1-5%, a thickener with a mass fraction of 0.1-1%, a defoamer with a mass fraction of 0.1-0.3%, a preservative with a mass fraction of 0.1-0.5% and pure water to make up the remaining mass.

2. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The synergist is M-990.

3. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The wetting and dispersing agent is one or more of acrylic copolymer LURAMUL GCP 01, polycarboxylate dispersant LUCRAMUL SCP, block polyether dispersant LURAMUL BEPO 1, naphthalenesulfonate dispersant LURAMULDAC 230, composite wetting and dispersing agent LURAMUL 483, phosphate dispersant LURAMUL PPS A16, sulfate dispersant LURAMUL SPS 16, EO-PO block copolymer LURAMUL EPC 07, styrene and maleic anhydride copolymer TERSPERSE 2612, and lignin sulfonate REAX 88A.

4. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The wetting and dispersing agents are 5% by mass of a composite wetting and dispersing agent LURAMUL 483, 4% by mass of a naphthalenesulfonate dispersant LURAMULDAC 230, and 3% by mass of a polycarboxylate dispersant LUCRAMUL SCP.

5. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The antifreeze agent is one or more of propylene glycol, glycerol and ethylene glycol.

6. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The preservative is kason and / or copper benzisothiazoline.

7. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The thickener is xanthan gum and / or magnesium aluminum silicate.

8. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The defoaming agent is silicone type 1572.

9. The composite pesticide containing pyraclostrobin, diafenthiuron and a synergist according to claim 1, characterized in that: The preservative is Kathon.

10. The composite pesticide containing cypermethrin, diafenthiuron and a synergist according to claim 1, characterized in that: The composite pesticide containing cypermethrin, diafenthiuron and a synergist comprises 20% by mass of cypermethrin, 30% by mass of diafenthiuron, 5% by mass of a composite wetting and dispersing agent LURAMUL 483, 4% by mass of a naphthalenesulfonate dispersant LURAMULDAC 230, 3% by mass of a polycarboxylate dispersant LUCRAMUL SCP, 10% by mass of M-990, 4% by mass of ethylene glycol, 0.2% by mass of xanthan gum, 0.2% by mass of silicone 1572, 0.3% by mass of kasone and pure water to make up the remaining mass.

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