Composition containing 4-trifluoromethyl nicotinamide and botanical insecticide and application

Abstract

The invention discloses a composition containing 4-trifluoromethyl nicotinamide and a botanical insecticide, and relates to the field of pesticide preparations, the composition comprises an effective active component a and an effective active component b, the effective active component a is 4-(trifluoromethyl) nicotinamide; the effective active component b is selected from any one of botanical insecticides; the botanical insecticide is prepared from any one of sophocarpidine, rotenone or pyrethrin. Through multiple insecticidal mechanisms, the effective active component a and the effective active component b are combined for synergistic interaction, so that the control effect of the composition can be remarkably improved, the drug resistance of wheat aphids can be delayed, and the composition has the advantages of quick control effect and long lasting period.

Description

[0001] This application is a divisional application of a patent application with an application date of December 20, 2022, application number 202211714178.3, and invention name “Compositions containing 4-trifluoromethylnicotinamide and botanical insecticides and their applications”. Technical Field

[0002] The present application relates to the field of pesticide preparations, and in particular to a composition containing 4-trifluoromethylnicotinamide and a botanical insecticide and its application. Background Art

[0003] Wheat aphids, commonly known as honey bugs and sticky bugs, belong to the order Homoptera, family Aphididae. Common wheat aphids in my country include Macrosiphon wheat aphids, Schizaphis wheat aphids and Millet aphids. These three aphids often occur together, with Macrosiphon wheat aphids and Schizaphis wheat aphids being the main ones. Wheat aphids suck the sap from wheat stems, leaves and young ears with adults and nymphs. Wheat is harmed in the seedling stage. In mild cases, the leaves turn yellow, growth stagnates, and tillering is reduced. In severe cases, the wheat plants wither and die. In the ear stage, the wheat grains are not full. In severe cases, the wheat ears dry up and are not strong, and even the whole plant dies. In addition, wheat aphids can also spread a variety of wheat toxin diseases. Macrosiphon wheat aphids and Schizaphis wheat aphids are the main vectors of yellow dwarf disease, and Schizaphis wheat aphids have the strongest virulence. In addition to wheat, wheat aphids can also harm crops such as corn and sorghum.

[0004] At present, the main method of controlling wheat aphids is chemical control, but the frequent use of chemical agents will cause wheat aphids to develop strong drug resistance, shortening the effective period of control, and chemical agents are likely to remain in agricultural products after use. Therefore, it is particularly important to develop a biological pesticide with good control effect, long effective period and less residue after use. Summary of the invention

[0005] The present application provides a composition containing 4-trifluoromethylnicotinamide and a botanical insecticide and its application. 4-trifluoromethylnicotinamide and the botanical insecticide are mixed to achieve synergistic effect, which can significantly improve the control effect of the composition on wheat aphids and has good rapid effect; it can also delay the resistance of wheat aphids to pesticides and increase the effective period of control, and has the advantages of good rapid control effect and long effective period.

[0006] In a first aspect, the present application provides a composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, the composition comprising an effective active component a and an effective active component b. The effective active component a is 4-trifluoromethylnicotinamide, the effective active component b is selected from any one of the botanical insecticides, and the botanical insecticides include any one of matrine, rotenone or pyrethrin.

[0007] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 1:10 to 10:1.

[0008] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 1:5-6:1.

[0009] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 4:1 to 6:1.

[0010] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 5:1 to 6:1.

[0011] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 5:1.

[0012] In some of the embodiments, based on the composition, the content of the effective active component a and the effective active component b is 11 wt % to 15 wt %.

[0013] In some embodiments, the composition further comprises auxiliary components; the auxiliary components include a dispersant, a thickener and water;

[0014] Taking the composition as a benchmark, the mass percentage of each component is:

[0015]

[0016]

[0017] Wherein, the content of the effective active component is the total content of the effective active component a and the effective active component b.

[0018] In some of the embodiments, based on the composition, the mass percentage of each component is:

[0019]

[0020] In some embodiments, the dispersant is selected from at least one of triethyl phosphite and sodium polycarboxylate; the thickener is selected from at least one of magnesium aluminum silicate and soluble starch.

[0021] In a second aspect, the present application provides the use of the above-mentioned composition containing 4-trifluoromethylnicotinamide and a botanical insecticide in controlling piercing-sucking pests.

[0022] In some embodiments, the piercing-sucking pests include wheat aphids.

[0023] In a third aspect, the present application provides the use of the above-mentioned composition containing 4-trifluoromethylnicotinamide and a botanical insecticide in improving the rapid effect of controlling wheat aphids and prolonging the effective period of controlling wheat aphids.

[0024] In some of the embodiments, the application comprises at least the following steps: diluting the composition containing 4-trifluoromethylnicotinamide and the botanical insecticide by 1000 times, spraying evenly until the leaves are fully wetted.

[0025] The beneficial effects brought about by the technical solutions provided by some embodiments of the present application include at least:

[0026] (1) The present application provides a composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, wherein the composition comprises an effective active component a and an effective active component b; the effective active component a and the effective active component b can achieve synergistic synergy after being combined, which is beneficial to improving the control effect of the composition on piercing-sucking pests, especially the control effect of the composition on wheat aphids;

[0027] (2) By adjusting the mass ratio of effective active component a to effective active component b within an appropriate range, it is beneficial to achieve a better synergistic effect;

[0028] (3) A composition comprising effective active component a and effective active component b within a suitable mass ratio range and with a content of 11 wt% to 15 wt% is beneficial for improving the control effect of the composition on wheat aphids, and can also delay the resistance of wheat aphids to pesticides, and has the advantages of fast effectiveness and long lasting effect. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application more clear, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0030] A composition containing 4-trifluoromethylnicotinamide and botanical insecticide

[0031] The composition includes an effective active component a and an effective active component b, wherein the effective active component a is 4-trifluoromethylnicotinamide, and the effective active component b is selected from any one of botanical insecticides, and the botanical insecticides include any one of matrine, rotenone or pyrethrin. The present application uses 4-trifluoromethylnicotinamide and botanical insecticides for mixing, synergistically enhancing the effect of the composition on wheat aphids, and having good rapid effect; it can also delay the resistance of wheat aphids, increase the effective period of control, and has the advantages of good rapid effect of control and long effective period.

[0032] In the embodiments of the present application, 10% matrine stock was purchased from Inner Mongolia Zhongnong Biochemical Technology Co., Ltd., 95% rotenone technical was purchased from Guangxi Xerox Agrochemical Technology Development Co., Ltd., and 70% pyrethrin technical was purchased from Yunnan Chuangsen Industrial Co., Ltd.

[0033] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 1: 10 to 10: 1. At this time, the co-toxicity coefficient (CTC) of the effective active component a and the effective active component b is greater than 120, which is conducive to achieving synergistic synergy and can improve the control effect of the composition on piercing-sucking pests (especially wheat aphids).

[0034] Exemplarily, the mass ratio of the effective active component a to the effective active component b is 1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9, 1:10 or a range consisting of any two of the above values.

[0035] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 1: 5 to 6: 1. At this time, the co-toxicity coefficient (CTC) of the effective active component a and the effective active component b is greater than 150, which can further improve the control effect of the composition on piercing-sucking pests (especially wheat aphids).

[0036] Illustratively, the mass ratio of the effective active component a to the effective active component b is 1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 1:2, 1:3, 1:4, 1:5 or a range consisting of any two of the above values.

[0037] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 4: 1 to 6: 1. At this time, the co-toxicity coefficient (CTC) of the effective active component a and the effective active component b is greater than 210, which is conducive to further improving the control effect of the composition on piercing-sucking pests (especially wheat aphids).

[0038] Illustratively, the mass ratio of the effective active component a to the effective active component b is 4:1, 5:1, 6:1 or a range consisting of any two of the above values.

[0039] In some embodiments, the mass ratio of the effective active component a to the effective active component b is 5: 1. At this time, the co-toxicity coefficient (CTC) of the effective active component a and the effective active component b is the largest, and the control effect on piercing-sucking pests (especially wheat aphids) is optimal.

[0040] In some embodiments, based on the composition, the content of the effective active component a and the effective active component b is 11 wt % to 15 wt %.

[0041] In some embodiments, the composition further comprises auxiliary components; the auxiliary components include a dispersant, a thickener and water;

[0042] Taking the composition as a benchmark, the mass percentage of each component is:

[0043]

[0044] Wherein, the content of the effective active component is the total content of the effective active component a and the effective active component b. At this time, it is beneficial to improve the stability and ductility of the composition.

[0045] Illustratively, the mass percentage of the effective active component is 11wt%, 12wt%, 13wt%, 14wt%, 15wt% or a range consisting of any two of the above values.

[0046] Illustratively, the mass percentage of the dispersant is 1 wt%, 2 wt%, 3 wt%, 4 wt%, 5 wt% or a range consisting of any two of the above values.

[0047] Exemplarily, the mass percentage of the thickener is 1 wt%, 1.5 wt%, 2 wt% or a range consisting of any two of the above values.

[0048] In some embodiments, the dispersant is selected from at least one of triethyl phosphite and sodium salt of polycarboxylate; the thickener is selected from at least one of magnesium aluminum silicate and soluble starch.

[0049] Example

[0050] The following examples more specifically describe the disclosure of the present application, which are intended for illustrative purposes only, as it will be apparent to those skilled in the art that various modifications and variations are possible within the scope of the disclosure of the present application. Unless otherwise stated, all parts, percentages, and ratios reported in the following examples are by weight, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further processing, and the instruments used in the examples are commercially available.

[0051] (I) Indoor toxicity test of active ingredient a and active ingredient b against wheat aphids

[0052] Test pests: sensitive wheat aphids raised on laboratory wheat plants, wingless adult aphids with consistent growth were selected for testing;

[0053] The test agent includes: effective active component a, effective active component b and a combination thereof; wherein the effective active component a is 4-trifluoromethylnicotinamide, and the effective active component b is any one of matrine, rotenone or pyrethrin.

[0054] The first set of experiments

[0055] The test agents are 4-trifluoromethylnicotinamide, matrine, and a combination of 4-trifluoromethylnicotinamide and matrine in different ratios. The ratios are shown in Table 1. The test agents are weighed and dissolved in methanol to obtain a plurality of corresponding mother solutions. The mother solutions are diluted with distilled water containing 0.1% TritonX-100 into 5 to 7 mass concentration gradients of drug solutions. The dilution method can be found in the relevant technology.

[0056] Referring to the standard of "Guidelines for Indoor Bioassay Tests of Pesticides - Insecticides Part 6: Insect Immersion Method for Insecticide Activity Test", immerse the target insects in the liquid for 5s to 10s, absorb the excess liquid with filter paper, and transfer the test insects to normal conditions for breeding. Each treatment was repeated 4 times, with 10 to 20 insects immersed in each repetition, and a treatment with a corresponding organic solvent without pesticide was set as a control. Then move to normal conditions for breeding, and check the mortality rate of the test insects after 48 hours. Analyze with software such as the Statistical Analysis System (SAS) and the Data Processing System (DPS), and obtain the linear equation in Table 1. The Sun Yunpei method was used to evaluate the effect of the insecticide, and the toxicity LC of the combination was determined. 50 , calculate the relative toxicity index and co-toxicity coefficient. According to the relevant records of Sun Yunpei's method, the co-toxicity coefficient

[0057]

[0058] If the co-toxicity index is greater than 120, it is a synergistic effect; if the co-toxicity index is between 80-120, it is an additive effect; if the co-toxicity index is less than 80, it is an antagonistic effect. The compound with a toxicity index of 100 is designated as the standard insecticide. This application uses 4-trifluoromethylnicotinamide. The test results are shown in Table 1, and the relevant calculation formula is as follows:

[0059] Table 1 Analysis of the results of indoor toxicity test of the combination of 4-trifluoromethylnicotinamide and matrine against wheat aphids

[0060]

[0061]

[0062] As can be seen from Table 1, the mass ratio of 4-trifluoromethylnicotinamide to matrine is within the range of 1:10 to 10:1, and the co-toxicity coefficient is greater than 125. It can be seen that 4-trifluoromethylnicotinamide and matrine can synergize under the appropriate ratio. Moreover, the mass ratio of 4-trifluoromethylnicotinamide to matrine is within the range of 1:5 to 6:1, and the co-toxicity coefficient is greater than 150; in particular, the mass ratio of 4-trifluoromethylnicotinamide to matrine is within the range of 4:1 to 6:1, and the co-toxicity coefficient is greater than 210, and the highest can reach 250.24.

[0063] The second set of experiments

[0064] Different from the first group of experiments, the test agents are 4-trifluoromethylnicotinamide, rotenone, and the combination of 4-trifluoromethylnicotinamide and rotenone in different ratios, the ratios are shown in Table 2, and the rest are the same as the first group of experiments. The test results are shown in Table 2.

[0065] Table 2 Analysis of the results of indoor toxicity test of the combination of 4-trifluoromethylnicotinamide and rotenone against wheat aphids

[0066]

[0067]

[0068] As can be seen from Table 2, the mass ratio of 4-trifluoromethylnicotinamide to rotenone is within the range of 1:10 to 10:1, and the co-toxicity coefficient is greater than 140. It can be seen that 4-trifluoromethylnicotinamide and rotenone can synergize under the appropriate ratio. Moreover, the mass ratio of 4-trifluoromethylnicotinamide to rotenone is within the range of 1:6 to 6:1, and the co-toxicity coefficient is greater than 150; in particular, the mass ratio of 4-trifluoromethylnicotinamide to rotenone is within the range of 4:1 to 6:1, and the co-toxicity coefficient is greater than 250, and the highest can reach 287.24.

[0069] The third group of experiments

[0070] Different from the first group of experiments, the test agents are 4-trifluoromethylnicotinamide, pyrethrin, and the combination of 4-trifluoromethylnicotinamide and pyrethrin in different ratios, the ratios are shown in Table 3, and the rest are the same as the first group of experiments. The test results are shown in Table 3.

[0071] Table 3 Analysis of the results of indoor toxicity test of the combination of 4-trifluoromethylnicotinamide and pyrethrin against wheat aphids

[0072]

[0073]

[0074] As can be seen from Table 3, the mass ratio of 4-trifluoromethylnicotinamide to pyrethrin is in the range of 1:10 to 10:1, and the co-toxicity coefficient is greater than 135. It can be seen that 4-trifluoromethylnicotinamide and pyrethrin can synergize under the appropriate ratio. Moreover, the mass ratio of 4-trifluoromethylnicotinamide to pyrethrin is in the range of 1:5 to 6:1, and the co-toxicity coefficient is greater than 150; in particular, the mass ratio of 4-trifluoromethylnicotinamide to pyrethrin is in the range of 4 to 6:1, and the co-toxicity coefficient is greater than 210, and the highest can reach 236.21.

[0075] The present application uses multiple (non-single insecticide) insecticidal mechanisms to combine effective active component a and effective active component b for synergistic enhancement, which can significantly improve the control effect of the composition. As can be seen from Tables 1 to 3, the mass ratio of effective active component a and effective active component b is 1:10 to 10:1, which can achieve synergistic enhancement, and the co-toxicity coefficient is greater than 120; the mass ratio of effective active component a and effective active component b is 1:5 to 6:1, which can improve the synergistic effect and achieve a co-toxicity coefficient greater than 150; the mass ratio of effective active component a and effective active component b is 4:1 to 6:1, which can further achieve a synergistic effect and achieve a co-toxicity coefficient greater than 200; when the mass ratio of effective active component a and effective active component b is 5:1, the co-toxicity coefficient reaches the maximum value.

[0076] (ii) This application selects five ratios of effective active component a to effective active component b, namely, 1:10, 4:1, 5:1, 6:1 and 10:1 by mass, as well as a single agent (containing only effective active component a or effective active component b) for subsequent field efficacy verification work.

[0077] 2.1 Composition sample configuration

[0078] Example 1: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 1% 4-trifluoromethylnicotinamide, 10% matrine, 4% sodium salt of polycarboxylate, 2% magnesium aluminum silicate, and the balance water;

[0079] Example 2: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 12% 4-trifluoromethylnicotinamide, 3% matrine, 5% triethylphosphite, 2% magnesium aluminum silicate, and the balance water;

[0080] Example 3: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 10% 4-trifluoromethylnicotinamide, 2% matrine, 3% triethylphosphite, 2% soluble starch, and the balance water;

[0081] Example 4: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 12% 4-trifluoromethylnicotinamide, 2% matrine, 2% triethylphosphite, 2% magnesium aluminum silicate, and the balance water;

[0082] Example 5: A composition containing 4-trifluoromethylnicotinamide and a biopesticide, comprising 10% 4-trifluoromethylnicotinamide, 1% matrine, 1% sodium salt of polycarboxylate, 1% magnesium aluminum silicate, and the balance water;

[0083] Example 6: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 1% 4-trifluoromethylnicotinamide, 10% rotenone, 5% sodium salt of polycarboxylate, 2% magnesium aluminum silicate, and the balance water;

[0084] Example 7: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 12% 4-trifluoromethylnicotinamide, 3% rotenone, 5% sodium salt of polycarboxylate, 2% magnesium aluminum silicate, and the balance water;

[0085] Example 8: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 10% 4-trifluoromethylnicotinamide, 2% rotenone, 3% triethylphosphite, 2% soluble starch, and the balance water;

[0086] Example 9: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 12% 4-trifluoromethylnicotinamide, 2% rotenone, 4% triethylphosphite, 2% soluble starch, and the balance water;

[0087] Embodiment 10: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 10% 4-trifluoromethylnicotinamide, 1% rotenone, 1% triethylphosphite, 1% soluble starch, and the balance water;

[0088] Example 11: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 1% 4-trifluoromethylnicotinamide, 10% pyrethrin, 4% sodium polycarboxylate, 2% magnesium aluminum silicate, and the balance water;

[0089] Example 12: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 12% 4-trifluoromethylnicotinamide, 3% pyrethrin, 5% sodium salt of polycarboxylate, 2% magnesium aluminum silicate, and the balance water;

[0090] Example 13: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 10% 4-trifluoromethylnicotinamide, 2% pyrethrin, 3% sodium salt of polycarboxylate, 2% magnesium aluminum silicate, and the balance water;

[0091] Example 14: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 12% 4-trifluoromethylnicotinamide, 2% pyrethrin, 2% sodium polycarboxylate, 1% magnesium aluminum silicate, and the balance water;

[0092] Example 15: A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, comprising 10% 4-trifluoromethylnicotinamide, 1% pyrethrin, 1% triethylphosphite, 1% soluble starch, and the balance water;

[0093] Comparative Example 1: A composition comprising 12% of 4-trifluoromethyl nicotinamide, 5% of triethyl phosphite, 2% of magnesium aluminum silicate, and the balance of water;

[0094] Comparative Example 2: A composition comprising 3% matrine, 5% triethyl phosphite, 2% magnesium aluminum silicate, and the balance water;

[0095] Comparative Example 3: A composition comprising 3% rotenone, 5% triethylphosphite, 2% magnesium aluminum silicate, and the balance water;

[0096] Comparative Example 4: A composition comprising 3% pyrethrin, 5% triethylphosphite, 5% magnesium aluminum silicate, and the balance water.

[0097] 2.2 Field efficacy verification

[0098] The following experimental design was carried out in the wheat test field where Changshan wheat aphids were seriously infested as an experimental base to verify its control effect on wheat aphids.

[0099] Treatment 1: clean water control treatment;

[0100] Treatment 2: The sample of Example 1 was diluted 1000 times and sprayed evenly;

[0101] Treatment 3: The sample of Example 2 was diluted 1000 times and sprayed evenly;

[0102] Treatment 4: The sample of Example 3 was diluted 1000 times and sprayed evenly;

[0103] Treatment 5: The sample of Example 4 was diluted 1000 times and sprayed evenly;

[0104] Treatment 6: The sample of Example 5 was diluted 1000 times and sprayed evenly;

[0105] Treatment 7: The sample of Example 6 was diluted 1000 times and sprayed evenly;

[0106] Treatment 8: The sample of Example 7 was diluted 1000 times and sprayed evenly;

[0107] Treatment 9: The sample of Example 8 was diluted 1000 times and sprayed evenly;

[0108] Treatment 10: The sample of Example 9 was diluted 1000 times and sprayed evenly;

[0109] Treatment 11: The sample of Example 10 was diluted 1000 times and sprayed evenly;

[0110] Treatment 12: The sample of Example 11 was diluted 1000 times and sprayed evenly;

[0111] Treatment 13: The sample of Example 12 was diluted 1000 times and sprayed evenly;

[0112] Treatment 14: The sample of Example 13 was diluted 1000 times and sprayed evenly;

[0113] Treatment 15: The sample of Example 14 was diluted 1000 times and sprayed evenly;

[0114] Treatment 16: The sample of Example 15 was diluted 1000 times and sprayed evenly;

[0115] Treatment 17: The sample of comparative example 1 was diluted 1000 times and sprayed evenly;

[0116] Treatment 18: The sample of comparative example 2 was diluted 1000 times and sprayed evenly;

[0117] Treatment 19: The sample of comparative example 3 was diluted 1000 times and sprayed evenly;

[0118] Treatment 20: The sample of comparative example 4 was diluted 1000 times and sprayed evenly.

[0119] Pesticide treatment: Pesticides were applied during the period when wheat aphids were seriously infested, with the leaves fully moistened. The cultivation period, growth period and density of each treatment were consistent, and tillage, weeding, water and fertilizer were managed according to routine procedures. No other pesticides were used during the experiment.

[0120] Survey time and method: refer to the standard method of "Guidelines for Field Efficacy Tests of Pesticides Part 79: Insecticides for Control of Wheat Aphids". Five sampling points are used for each treatment. 5 to 10 plants with aphids are fixed at each point. The number of aphids on the fixed plants is investigated. The survey is conducted once before the application and once at 1d, 3d, 7d, and 14d after the application. The number of aphids is calculated.

[0121]

[0122] The calculation formula for the population reduction rate and control effect is as follows. The experimental results are shown in Table 4.

[0123] Table 4 Control effect of spraying each treatment agent on wheat aphids

[0124]

[0125] From the field efficacy verification results in Table 4, it can be seen that the composition containing 4-trifluoromethylnicotinamide and botanical insecticide (treatments 2 to 16) showed better control effect on wheat aphids than the clear water test (treatment 1) and the single-dose test (treatments 17 to 20). Specifically, in combination with Table 4, one day after application, the control effects of treatments 2 to 16 containing 4-trifluoromethylnicotinamide and the botanical insecticide composition on wheat aphids were all as high as 75% or more, most of them were above 80%, and some were above 90%, which were significantly higher than the control effects of treatments 17 to 20 of a single agent (all were not higher than 71%, and the lowest was only 44.83%); further, one day after application, the reduction rate and control effect of the number of wheat aphids in treatments 3 to 5, 8 to 10, and 13 to 15 were higher than those in treatments 2, 6 to 7, 11 to 12, and 16. It can be seen that when the present application adopts a ratio of 4-trifluoromethylnicotinamide and botanical insecticides in the range of 4:1 to 6:1 for compounding, the synergistic effect of the prepared composition is very obvious, and a more excellent control effect is shown on wheat aphids.

[0126] At the same time, through continuous tracking of 1d, 3d, 7d and 14d, it can be seen that 14 days after the application, the treatments 2 to 16 of the composition containing 4-trifluoromethylnicotinamide and botanical insecticide still showed excellent control effects on wheat aphids. Therefore, it can be seen that the composition with a mass ratio of effective active component a and effective active component b in an appropriate range and a content of 11wt% to 15wt% can synergistically control wheat aphids, with good quick-acting property and long lasting effect; in particular, the mass ratio of the effective active component a and the effective active component b is 4:1 to 6:1, which has a good control effect, and it can be seen that the mass ratio of the effective active component a and the effective active component b is 5:1, and the control effect is the best.

[0127] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A composition containing 4-trifluoromethylnicotinamide and a botanical insecticide, characterized in that: The composition comprises an effective active component a and an effective active component b; Wherein, the effective active component a is 4-trifluoromethyl nicotinamide; The effective active component b is pyrethrin.

2. The composition according to claim 1, characterized in that The mass ratio of the effective active component a to the effective active component b is 1:10 to 10:

1.

3. The composition according to claim 1, characterized in that The mass ratio of the effective active component a to the effective active component b is 1:5 to 6:

1.

4. The composition according to claim 1, characterized in that The mass ratio of the effective active component a to the effective active component b is 4:1 to 6:

1.

5. The composition according to claim 1, characterized in that Based on the composition, the content of the effective active component a and the effective active component b is 11 wt% to 15 wt%.

6. The composition according to claim 1, characterized in that The composition also includes auxiliary material components; The auxiliary material components include dispersants, thickeners and water; Taking the composition as a benchmark, the mass percentage of each component is: Wherein, the content of the effective active component is the total content of the effective active component a and the effective active component b.

7. The composition according to claim 6, characterized in that The dispersant is selected from at least one of triethylphosphite and polycarboxylic acid sodium salt; The thickener is selected from at least one of magnesium aluminum silicate and soluble starch.

8. Use of the composition comprising 4-trifluoromethylnicotinamide and a botanical insecticide according to any one of claims 1 to 7 for controlling piercing-sucking pests.

9. The use according to claim 8, characterized in that: The piercing-sucking pests include wheat aphids.

10. Use of the composition containing 4-trifluoromethylnicotinamide and a botanical insecticide according to any one of claims 1 to 7 for improving the rapid effect of controlling wheat aphids and prolonging the effective period of controlling wheat aphids.

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