Pesticide composition containing fluopyram and application thereof

Abstract

The invention belongs to the technical field of pesticides, and discloses a fluopyram-containing pesticide composition and application thereof.The pesticide composition comprises an active component A and an active component B. The active component A is fluopyram, the active component B is d-limonene, and the mass ratio of the active component A to the active component B is 1: 30-35: 1. The composition disclosed by the invention has an excellent prevention and treatment effect on plant nematodes, has a remarkable synergistic interaction effect under a certain mass ratio, can effectively reduce the use amount of pesticides and reduce pesticide residues of crops, and is environment-friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticides and specifically discloses a pesticide composition containing fluopyram and use thereof. Background Art

[0002] Fluopyram is a broad-spectrum, highly effective, low-toxic fungicide that inhibits the growth and reproduction of pathogens by interfering with the cytochrome P450 enzyme system of pathogens. It has protective, therapeutic and eradication effects and is mainly used to prevent and treat plant diseases caused by fungi, such as powdery mildew, downy mildew, and blight. d-Limonene is a natural organic compound with multiple biological activities such as antioxidant, anti-inflammatory, and antibacterial properties. It can protect plants from pathogens by inhibiting oxidative stress and inflammatory responses in cells. In addition, d-limonene also has the effect of promoting plant growth and increasing crop yields.

[0003] Plant parasitic nematodes are one of the most important pathogens of plants. They have a wide host range, are difficult to control, and can cause serious economic losses. Therefore, there is an urgent need to develop environmentally friendly and efficient pesticide compositions.

[0004] Meloidogyne incognita (Kofoidet White) Chitwood and Cereal cyst nematode (CCN, Heterodera avenae Wollenweber, 1924) are two pathogenic organisms that are more serious in harming crops. Among them, the root-knot nematode is a soil-resident endoparasitic nematode that reproduces quickly, has strong resistance, and is easy to spread. Vegetable roots parasitized by the root-knot nematode will produce a large number of root knots, which will destroy the normal physiological functions of the roots. In severe cases, it can cause root rot, while the above-ground parts show short plants, poor development, and reduced yields. Cereal cyst nematodes are an important type of infectious pathogenic nematode that mainly infects the roots of cereal crops and reproduces rapidly, turning the crop root system into a spherical tumor, thereby hindering and inhibiting the growth of crops and affecting crop yields. In addition, the wounds caused by the invasion of pathogens are conducive to the invasion of other pathogens in the soil, forming complex diseases. Harmful pathogens in the soil will also take the opportunity to invade the plant body through the wounds, causing the occurrence and harm of various soil-borne diseases, causing secondary damage to facility vegetables.

[0005] The inventors conducted in-depth research on fluopyram and found that a mixture of fluopyram and d-limonene has good killing activity against nematodes. After further research, the present invention was completed. After searching, there is no report on the use of a mixture of fluopyram and d-limonene for controlling nematodes. Summary of the invention

[0006] The object of the present invention is to provide a pesticide composition with high activity against nematodes, improve the actual control effect, and effectively delay the occurrence of nematode resistance.

[0007] In order to achieve the above object, the present invention is implemented by the following technical scheme: a pesticide composition containing fluopyram, wherein the active ingredients of the pesticide composition include active ingredient A and active ingredient B, wherein the active ingredient A is fluopyram, and the active ingredient B is d-limonene.

[0008] Furthermore, the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 35:1;

[0009] Furthermore, the mass ratio of the active ingredient A to the active ingredient B is 1:30, 1:27, 1:20, 1:10, 1:9, 1:5, 1:3, 3:1, 5:1, 9:1, 10:1, 21:1, 24:1, 35:1;

[0010] Furthermore, the mass ratio of the active ingredient A to the active ingredient B is 1:27 to 24:1;

[0011] Furthermore, the mass ratio of the active ingredient A to the active ingredient B is 1:27, 1:20, 1:10, 1:9, 1:5, 1:3, 3:1, 5:1, 9:1, 10:1, 21:1, 24:1;

[0012] Furthermore, the total weight of the pesticide composition is 100%, and the total weight of the active ingredient A and the active ingredient B accounts for 0.5% to 80% of the total weight of the pesticide composition;

[0013] Furthermore, the total weight of the pesticide composition is 100%, and the total weight of the active ingredient A and the active ingredient B accounts for 5% to 75% of the total weight of the pesticide composition;

[0014] Furthermore, the total weight of the pesticide composition is 100%, and the total weight of the active ingredient A and the active ingredient B accounts for 5%, 10%, 12%, 15%, 20%, 25%, 26%, 30%, 32%, 35%, 40%, 45%, 48%, 50%, 55%, 60%, 67%, 65%, 70%, 75% of the total weight of the pesticide composition;

[0015] Furthermore, the total weight of the pesticide composition is 100%, and the total weight of the active ingredient A and the active ingredient B accounts for 5%, 12%, 15%, 20%, 25%, 26%, 35%, 40%, 45%, 55%, 65%, 75% of the total weight of the pesticide composition;

[0016] Pesticide adjuvants are a general term for various auxiliary ingredients used in the processing and application of pesticide formulations. Although they are a type of adjuvant and generally have no biological activity themselves, they are indispensable in the formulation of dosage forms or when applying pesticides.

[0017] Furthermore, the pesticide composition contains agriculturally permitted auxiliary ingredients in addition to the active ingredients;

[0018] Furthermore, the auxiliary component is selected from one or more of a wetting agent, a dispersant, an emulsifier, a thickener, a disintegrant, an antifreeze agent, a defoaming agent, a solvent, a preservative, a stabilizer, a warning color, a film former, a synergist and a carrier;

[0019] Furthermore, the function of the wetting agent is to reduce the surface tension of the drug solution, so that the drug particles are quickly wetted, and the drug solution is easily wetted and spread on the surface of the application target, so as to help the drug penetrate. The wetting agent is selected from one or more of saponin powder, tea cake powder, silkworm feces, soapberry powder, SOPA, detergent, emulsifier 2000 series, alkylbenzene sulfonate, alkylphenol polyoxyethylene ether, alkylnaphthalene sulfonate, lignin sulfonate, sodium dodecyl sulfate, α-olefin sulfonate, castor oil polyoxyethylene ether, alkylphenol ethoxylate, sodium dioctyl succinate sulfonate, fatty alcohol ethoxylate, fatty alcohol polyoxyethylene ether sodium sulfate and wetting penetrant F;

[0020] Furthermore, the function of the dispersant is to keep the powder particles dispersed and prevent agglomeration. The dispersant is selected from one or more of lignin sulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate, alkylphenol polyoxyethylene ether, alkylnaphthalene sulfonate formaldehyde condensate, naphthalene sulfonate, tristyrylphenol ethoxylate phosphate, fatty alcohol ethoxylate, polycarboxylate, sulfate, fatty amine polyoxyethylene ether, glycerol fatty acid ester polyoxyethylene ether, polyacrylic acid, phosphate, polyoxyethylene polyoxypropylene block copolymer and EO-PO graft copolymer;

[0021] Furthermore, the thickener is selected from one or more of xanthan gum, magnesium aluminum silicate, polyvinyl alcohol, organic bentonite, and carboxymethyl cellulose;

[0022] Furthermore, the disintegrant is selected from one or more of sodium sulfate, ammonium sulfate, cellulose, aluminum chloride, sodium chloride, ammonium chloride, bentonite, glucose, sucrose, modified starch, urea, sodium carbonate, sodium bicarbonate and tartaric acid;

[0023] Furthermore, the emulsifier is selected from one or more of fatty alcohol polyoxyethylene ether, fatty amine polyoxyethylene ether, fatty alcohol ethylene oxide-propylene oxide copolymer, alkylphenol polyoxyethylene ether, alkylbenzene sulfonate, styrylphenol polyoxyethylene ether, phenethylphenol polyoxyethylene polyoxypropylene ether, and fatty acid polyoxyethylene ester;

[0024] Furthermore, the defoaming agent is selected from silicone oil, organic silicon defoaming agent, C8~C 10 Fatty alcohol compounds, C 10 ~C 20 One or more of saturated fatty acid compounds or silicone compounds;

[0025] Furthermore, the preservative is selected from one or more of sorbic acid, potassium sorbate, sodium sorbate, sodium benzoate, benzoic acid, sodium p-hydroxybenzoate, and methyl p-hydroxybenzoate;

[0026] Furthermore, the stabilizer has additives for maintaining and enhancing the physical and physicochemical properties of the product, including anti-crystallization, anti-flocculation, sedimentation, anti-agglomeration and suspension additives, etc.; it can also have chemical stabilizers, including anti-decomposition, anti-oxidation, anti-ultraviolet radiation agents, etc., mainly to maintain and enhance the chemical properties of the product, especially to prevent and slow down the decomposition of the active ingredients. The stabilizer is selected from one or more of disodium hydrogen phosphate, oxalic acid, succinic acid, adipic acid, borax, 2,6-di-tert-butyl-p-cresol, epoxidized vegetable oil, etc.;

[0027] Furthermore, the synergist itself has no biological activity, but when mixed with certain pesticides, it can significantly improve the toxicity and efficacy of the pesticides. The synergist is selected from synergistic phosphorus and synergistic ether;

[0028] Furthermore, the carrier is selected from one or more of kaolin, bentonite, attapulgite, light calcium carbonate, diatomaceous earth, and white carbon black;

[0029] Furthermore, the solvent is a general term for solvents, liquid diluents and / or carriers used in the production and application technology of pesticide industry, and the solvent is selected from one or more of benzene, diesel, methanol, petroleum ether and deionized water;

[0030] Furthermore, the pesticide composition can be prepared into a formulation form permitted in agriculture, and the formulation form is a solid formulation or a liquid formulation.

[0031] Furthermore, the solid preparation is a powder, a granule, a water dispersible granule, or a wettable powder;

[0032] Furthermore, the liquid preparation is an emulsifiable concentrate, an aqueous emulsion, a microemulsion, or a suspension;

[0033] Furthermore, the solid preparation is a granule or a wettable powder; the liquid preparation is an aqueous emulsion or a suspension;

[0034] Furthermore, the preparation method of the granules is as follows: according to the formula ratio, the active ingredient, the dispersant and the auxiliary agent are mixed evenly to form a mother powder by a coating granulation method, the mother powder and the carrier are added to a coating granulator and stirred, and the prepared binder aqueous solution is added while stirring, and the material is discharged after being fully mixed, and the granules are obtained after drying and sieving;

[0035] Furthermore, the preparation method of the wettable powder is as follows: the active ingredient, the dispersant, the wetting agent and the filler are mixed according to the formula ratio, uniformly stirred in a stirring kettle, and the wettable powder is obtained by multiple grinding and mixing in a jet mill;

[0036] Furthermore, the preparation method of the aqueous emulsion is as follows: according to the formula ratio, the active ingredient is added together with the solvent, the emulsifier, and the cosolvent to dissolve into a uniform oil phase; part of the water, the antifreeze agent and other pesticide adjuvants are mixed together to form a uniform water phase; while stirring at high speed in a reaction kettle, the oil phase is added to the water phase, stirred evenly, and a shearing machine is turned on for high-speed shearing for about half an hour to form an oil-in-water type, thereby obtaining the aqueous emulsion;

[0037] Furthermore, the preparation method of the suspension is as follows: according to the formula ratio, the active ingredient, the surfactant and other functional additives are placed in a reaction kettle in sequence, water is added to mix evenly, and the suspension is obtained by high-speed shearing, wet sand grinding, and finally homogenization filtration.

[0038] The present invention also discloses the use of the above-mentioned pesticide composition and / or its preparation for preventing and controlling plant nematodes.

[0039] Further, the plant nematode is selected from any one or more of the genera of thorny nematodes, spiral nematodes, spiral nematodes, trypanoideae, spot-skin nematodes, spherodera, aphid nematodes, paratrichum nematodes, umbrella-skin nematodes, stem nematodes, pentacyclic nematodes, spherical nematodes, long needle nematodes, root-knot nematodes, bradysome nematodes, piercing nematodes, burr nematodes, small pad-edge nematodes, Xiphinema, spiral nematodes, dwarf nematodes, shield nematodes, coccinella, small ring nematodes, sheath nematodes, tie nematodes, and semi-wheel nematodes;

[0040] Furthermore, the plant nematodes are selected from any one or more of root-knot nematodes, cyst nematodes, aphid nematodes, stem nematodes, root-knot nematodes and root-rot nematodes;

[0041] Furthermore, the nematodes are selected from the group consisting of southern root-knot nematodes and cereal cyst nematodes.

[0042] The present invention also discloses a method for controlling plant nematodes using the above pesticide composition and / or its preparation.

[0043] Further, the method comprises seed treatment, stem application, drenching, dripping, pouring, spraying, misting, broadcasting, spreading or fumigating;

[0044] Furthermore, the method is applied to plants, plant propagation materials and subsequently grown plant organs, cultivation media, materials or spaces.

[0045] The beneficial effects of the present invention are as follows:

[0046] First, the pesticide composition of the present invention is compounded at a certain mass ratio, has high nematicidal activity, and can produce significant synergistic effects;

[0047] Second, the pesticide composition of the present invention reduces the amount of pesticide used and reduces the cost of prevention and control;

[0048] Third, the pesticide composition of the present invention has low toxicity, reduces pesticide residues in agricultural products, and is environmentally friendly. DETAILED DESCRIPTION

[0049] In order to make the technical scheme of the present invention clearer, the content of the present invention is further described in detail below in conjunction with the embodiments, and the contents mentioned in the embodiments are not intended to limit the present invention. It should be noted that in the present invention, the components involved are all conventional commercial products, or can be obtained by conventional technical means in the art.

[0050] Preparation Example:

[0051] Preparation Example 1 15% Fluopyram·d-limonene granules (1:2)

[0052] Calculated by weight percentage, 5% fluopyram, 10% d-limonene, 0.5% polyvinyl pyrrolidone, 1.5% polyvinyl alcohol, 4.5% sodium lignin sulfonate, 5.5% modified starch, and diatomaceous earth make up the balance.

[0053] Preparation method: According to the formula ratio, the coating granulation method is used to evenly mix fluopyram, d-limonene, dispersant and additives to form a mother powder, the mother powder and the carrier are added to the coating granulator and stirred, and the prepared binder aqueous solution is added while stirring, and the material is discharged after being fully mixed, and then dried and sieved.

[0054] Preparation Example 2 40% Fluopyram·d-limonene wettable powder (2:3)

[0055] In terms of weight percentage, 16% fluopyram, 24% d-limonene, 3% sodium dodecyl sulfate, 6.5% sodium lignin sulfonate, 3% sodium polycarboxylate, 2% dispersant NNO, 5% white carbon black, 2.5% attapulgite, and kaolin make up the balance.

[0056] Preparation method: Fluopyram, d-limonene, a dispersant, a wetting agent and a filler are mixed according to the formula ratio, uniformly stirred in a stirring tank, and pulverized and mixed uniformly for multiple times by a jet mill.

[0057] Preparation Example 3 12% Fluopyram·d-limonene aqueous emulsion (1:5)

[0058] Calculated by weight percentage, 2% fluopyram, 10% d-limonene, 1% dimethyl sulfoxide, 0.5% alkylphenol polyoxyethylene ether phosphate, 1.5% alkylaryl polyoxyethylene polyoxypropylene ether, 10% cyclohexanone, 0.2% xanthan gum, 5% glycerol, 0.1% benzoic acid, and deionized water make up the balance.

[0059] Preparation method: according to the formula ratio, add fluopyram, d-limonene, solvent, emulsifier and cosolvent together to dissolve into a uniform oil phase; mix part of water, antifreeze agent and other pesticide adjuvants together to form a uniform water phase; add the oil phase into the water phase while stirring at high speed in a reactor, stir evenly, start the shearing machine for high-speed shearing, and shear for about half an hour.

[0060] Preparation Example 4 26% Fluopyram·d-limonene suspension (2:11)

[0061] Calculated by weight percentage, 4% fluopyram, 22% d-limonene, 3% sodium dodecyl sulfate, 2% sodium benzenesulfonate formaldehyde condensate, 3% alkylphenol polyoxyethylene ether phosphate, 0.25% xanthan gum, 1% magnesium aluminum silicate, 5% glycerol, 0.1% sodium phenyl acid, 0.5% silicone oil, and deionized water make up the balance.

[0062] Preparation method: According to the formula ratio, fluopyram, d-limonene, surfactant and other functional additives are placed in a reactor in sequence, water is added to mix evenly, and the mixture is subjected to high-speed shearing, wet sand grinding, and finally homogenized filtration.

[0063] Indoor biological activity test

[0064] Example 1: Indoor activity measurement test

[0065] Test basis: The test refers to NY / T 1833.1-2009 "Guidelines for Indoor Bioassay of Pesticides" Nematicides Part 1: Insect immersion method for inhibition of plant pathogenic nematodes.

[0066] Biological test materials: southern root-knot nematode and cereal cyst nematode.

[0067] Test agents: 95% fluopyram technical drug, 92% d-limonene technical drug.

[0068] Instruments and equipment: electronic balance, culture dishes, test tubes, biochemical test plates, pipettes, counters, dissecting microscopes, constant temperature incubators, etc.

[0069] Test steps:

[0070] Preparation of nematode suspension:

[0071] Southern root-knot nematode: Pick the egg masses of root-knot nematodes from the root knots of tomatoes, wash them with distilled water, place them on wet filter paper in a culture dish, and incubate them at 20℃~25℃. Start using the second generation of hatched nematodes, obtain second-instar larvae of the same age, and make a nematode suspension for later use.

[0072] Cyst nematodes: Take soil from the wheat field to the laboratory, twist the soil sample into fine powder, mix it evenly, then rinse the soil with a tap while stirring, sieving (100 mesh), and centrifuging. Place the cysts in the 100-mesh sieve in a hatching sieve, soak them in sterile water at 4°C for 8 weeks, and then incubate them at 16°C. Start using the second generation of hatched nematodes, obtain second-instar larvae of the same age, and make a nematode suspension for later use.

[0073] Preparation of medicine:

[0074] The above original drugs were dissolved in acetone and then diluted with 0.1% Tween-80 aqueous solution. Five series of concentration gradients were set for each drug, and an aqueous solution without drug and with the same solvent content was used as a control.

[0075] Chemical treatment:

[0076] Use a pipette to pipette 3 mL of the drug solution into the test tube from low concentration to high concentration, and then pipette 3 mL of the prepared nematode suspension into the test tube to mix the drug solution and nematode suspension evenly. Use a pipette to pipette a certain volume of the above mixed solution into the small holes of the multi-well biochemical test plate, cover it, and culture it at a constant temperature of 25°C for 24 hours.

[0077] Experimental Replication:

[0078] Each treatment was repeated 4 times, and a treatment without drug was set as a control.

[0079] Experimental investigation:

[0080] Take 1 mL of the mixture from each treatment and place it under a dissecting microscope to observe the death of nematodes. The number of nematodes observed in each repetition should be no less than 100, and the total number of nematodes investigated and the number of dead nematodes should be recorded. If the nematodes are rigid and cannot bend or move when touched with a hairpin or bamboo needle, they are considered dead.

[0081] Data statistics and analysis:

[0082] Based on the survey data, the mortality rate of each treatment was calculated according to the following formula.

[0083] The calculation results are retained to two decimal places:

[0084]

[0085]

[0086] Test calibration:

[0087] If the control mortality rate is less than 5%, no correction is required;

[0088] If the control mortality rate is between 5% and 15%, it should be corrected according to the corrected mortality formula;

[0089] If the control mortality rate is greater than 15%, the study needs to be repeated.

[0090] Statistical analysis: DPS statistical analysis system was used to obtain the toxicity regression equation and LC 50 Value, to evaluate the activity of the test agent on the biological test material.

[0091] Joint action type:

[0092] The co-toxicity coefficient (CTC) of the mixture was calculated according to Sun Yunpei's method to evaluate the type of combined action.

[0093] Synergistic effect: CTC ≥ 120;

[0094] Antagonism: CTC≤80;

[0095] Additive effect: CTC is between 80 and 120.

[0096] The co-toxicity coefficient (CTC value) of the mixture is calculated as follows:

[0097]

[0098] Where:

[0099] ATI——Actual Toxicity Index of Mixture;

[0100] S——LC of standard pesticide 50 , the unit is milligrams per liter (mg / L);

[0101] M——LC of the mixture 50 , the unit is milligrams per liter (mg / L).

[0102] TTI=TI A ×P A +TI B ×P B

[0103] Where:

[0104] TTI – Theoretical Toxicity Index of Mixtures;

[0105] TI A ——A: toxicity index of the agent;

[0106] P A ——The percentage of agent A in the mixture, in percentage (%);

[0107] TI B ——Toxicity index of agent B;

[0108] P B ——The percentage of agent B in the mixture, in percentage (%).

[0109]

[0110] Where:

[0111] CTC – Co-toxicity coefficient;

[0112] ATI——Actual Toxicity Index of Mixture;

[0113] TTI - Theoretical Toxicity Index of Mixture.

[0114] The test results are shown in the following table:

[0115] According to the results of indoor biological activity assay, it can be seen that the combination of fluopyram and d-limonene has good nematicidal activity.

[0116] As shown in Table 1, when the mass ratio of fluopyram and d-limonene is in the range of 1:27 to 35:1, the indoor combined effect on southern root-knot nematodes is synergistic; when the mass ratio of fluopyram and d-limonene is 1:27 to 21:1, the co-toxicity coefficient is greater than 130, and the synergistic effect is obvious; when the mass ratio of fluopyram and d-limonene is 1:9 to 9:1, the co-toxicity coefficient is greater than 140, and the synergistic effect is significant.

[0117] Table 1 Results of indoor activity test of fluopyram and d-limonene against southern root-knot nematodes

[0118]

[0119]

[0120] As shown in Table 2, when the mass ratio of fluopyram and d-limonene is in the range of 1:30 to 24:1, the indoor combined effect on cereal cyst nematodes is synergistic; when the mass ratio of fluopyram and d-limonene is 1:10 to 24:1, the co-toxicity coefficient is greater than 130, and the synergistic effect is obvious; when the mass ratio of fluopyram and d-limonene is 1:5 to 10:1, the co-toxicity coefficient is greater than 160, and the synergistic effect is significant.

[0121] Table 2 Results of indoor activity test of fluopyram and d-limonene against cereal cyst nematodes

[0122]

[0123] In addition, through indoor experiments, it was determined that when the mass ratio of fluopyram to d-limonene was 1:35 and 45:1, the combined effect on southern root-knot nematodes showed an additive effect. It was also determined that when the mass ratio of fluopyram to d-limonene was 1:40 and 40:1, the combined effect on cereal cyst nematodes showed an additive effect.

[0124] Field efficacy test

[0125] Example 2: Field efficacy test on tomato root-knot nematodes

[0126] Test basis: The test refers to GB / T17980.38-2000 "Guidelines for field efficacy tests of pesticides (I) Nematicides for the control of root nematodes".

[0127] Test target: Tomato root-knot nematode.

[0128] Test crop: Tomato (Pink Persimmon).

[0129] The test was conducted in a greenhouse in Zhucheng, Weifang City, Shandong Province. The tomato greenhouses were selected with severe root-knot nematode diseases in previous years. The water and fertilizer management was moderate. The beds were leveled before the test and the rotary tillage machine was used for rotary tillage once to make the root-knot nematodes evenly distributed in the greenhouse. The tomato planting density was 2,500 plants / mu.

[0130] Test drug and dosage:

[0131] Table 3 Treatment agents and dosage

[0132]

[0133] Experimental treatment: The experimental plots were arranged in random blocks, with a plot area of ​​30m 2 , each treatment was repeated 4 times. On the day of tomato transplanting and planting (February 25, 2023), root irrigation was carried out, with 200 mL of liquid applied per plant, and the drug was applied once during the entire test process.

[0134] Investigation method: 60 days after application of pesticides, random sampling method was used to investigate 2 plants at each point, and the incidence rate, disease index and control effect were calculated.

[0135] Diseased plant grading method:

[0136] Level 0: No galls on the roots;

[0137] Level 1: There are a few small galls on the roots;

[0138] Level 3: Two-thirds of the root system is covered with small galls;

[0139] Level 5: The root system is covered with small galls and has secondary galls;

[0140] Level 7: The root system forms a fibrous root ball.

[0141] Calculation method of drug efficacy:

[0142]

[0143]

[0144] The results of the field efficacy test are shown in the following table:

[0145] From the results of the field efficacy test on tomato root-knot nematodes in Table 4, it can be seen that the combination preparation of fluopyram and d-limonene has a good control effect on tomato root-knot nematodes. The overall control efficacy of the combination treatment groups of 12% fluopyram·d-limonene emulsion (1:5) and 26% fluopyram·d-limonene suspension (2:11) on tomato root-knot nematodes was 83.41% and 81.70%, respectively, which was significantly better than the blank control.

[0146] Table 4 Field efficacy test results of each treatment on tomato root-knot nematodes

[0147]

[0148] The results of indoor bioassays and field efficacy tests showed that the reasonable combination of fluopyram and d-limonene has a significant synergistic effect on plant nematode diseases, while reducing the dosage of a single dose and reducing the pesticide residues in agricultural products, which is safe and efficient.

[0149] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A pesticide composition containing fluopyram, characterized in that: The active ingredients of the pesticide composition include active ingredient A and active ingredient B, wherein the active ingredient A is fluopyram and the active ingredient B is d-limonene.

2. The pesticide composition according to claim 1, characterized in that The mass ratio of the active ingredient A to the active ingredient B is 1:30 to 35:

1.

3. The pesticide composition according to claim 1, characterized in that The mass ratio of the active ingredient A to the active ingredient B is 1:27 to 24:

1.

4. The pesticide composition according to claim 1, characterized in that The total weight of the pesticide composition is 100%, and the total weight of the active ingredient A and the active ingredient B accounts for 0.5% to 80% of the total weight of the pesticide composition; Preferably, the total weight of the pesticide composition is 100%, and the total weight of the active ingredient A and the active ingredient B accounts for 5% to 75% of the total weight of the pesticide composition.

5. The pesticide composition according to claim 1, characterized in that The pesticide composition contains not only active ingredients but also auxiliary ingredients permitted in agriculture.

6. The pesticide composition according to claim 5, characterized in that The auxiliary components are selected from one or more of wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoaming agents, solvents, preservatives, stabilizers, synergists or carriers.

7. The pesticide composition according to claim 1, characterized in that The pesticide composition can be prepared into a formulation form permitted in agriculture, and the formulation form is a solid formulation or a liquid formulation.

8. The pesticide composition according to claim 7, characterized in that The liquid preparations are emulsifiable concentrates, aqueous emulsions, microemulsions, and suspensions; the solid preparations are powders, granules, water-dispersible granules, and wettable powders.

9. Use of the pesticide composition or the formulation thereof according to any one of claims 1 to 8 for controlling plant nematodes.

10. The use according to claim 9, characterized in that The plant nematodes are selected from any one or more of root-knot nematodes, cyst nematodes, aphid nematodes, stem nematodes, root-knot nematodes and root-rot nematodes; Preferably, the nematode is selected from the group consisting of southern root-knot nematode and cereal cyst nematode.

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