CN111903700B - Insecticidal composition containing cycloartemia and diafenthiuron - Google Patents

Abstract

The invention relates to an insecticidal composition containing cycloartemia amide and diafenthiuron, the weight ratio of the two active ingredients is 1:80-80:1, the total weight content of the active ingredients in the composition is 1% -90%, and the balance is auxiliary ingredients which are allowed to be used and can be accepted in pesticides, so that the insecticidal composition can be prepared into suspending agents, microemulsions, emulsifiable concentrates, wettable powder and water dispersible granules. The composition has obvious synergistic effect, can reduce the use cost of pesticides, and is environment-friendly and safe.

Description

Insecticidal composition containing cycloartemia and diafenthiuron

Technical Field

The invention relates to the field of pesticide compositions, in particular to an insecticidal composition containing cycloartemia amide and diafenthiuron.

Background

Chemical name of cyclobridiamide (cycloriliprole): 3-bromo-N- { 2-bromo-4-chloro-6- { [ (1-cyclopropylethyl) amine ] carbonyl } phenyl } -1- (3-chloro-2-pyridinyl) -1H-pyrazole-5-carboxamide having the formula:

cyclobromothalamide is an anthranilamide pesticide and also belongs to bisamide compounds, but it does not act on the ryanodine receptor, but on the ryanodine receptor allosteric. The cycloartemia amide has a wide insecticidal spectrum, and can be used for controlling lepidoptera, coleoptera, thysanoptera, diptera, homoptera pests and the like on various crops such as fruit trees, vegetables, potatoes, tea trees, soybeans, cotton and the like.

Diafenthiuron (Diafenthiuron) chemical name: 1-tert-butyl-3- (2, 6-diisopropyl-4-phenoxyphenyl) thiourea having the structural formula:

diafenthiuron is converted into corresponding carbodiimide by light or in vivo, and is a mitochondrial respiration inhibitor; the feed has the advantages that larvae, nymphs and adults are killed mainly through the contact killing and stomach poisoning effects, and a certain egg killing effect is achieved; can be used for cotton, various field crops, fruit trees, ornamental plants and vegetables, and can effectively prevent and control phytophagous mites, whiteflies, aphids and leafhopper pests; also used for controlling some leaf-feeding pests on rape (plutella xylostella), soybean (soybean noctuid) and cotton (cotton leaf noctuid); is safe to all adults of beneficial insects and also safe to predatory mites and spiders.

In the actual process of agricultural production, the use of chemical agents is the most effective means for controlling plant diseases and insect pests, but the most easily generated problem by chemical control of insect pests is the generation of insect pest resistance. Practical application proves that the effect of single pesticide on pest control is gradually reduced, and the combination of certain pesticide active ingredients can achieve the effects of improving the pesticide effect and delaying the generation of the drug resistance of the pests. Based on indoor screening and field experiments, the inventor finds that the compound of the cycloartemia amide and the diafenthiuron has good activity on tea leafhoppers and peach fruit borers.

The insecticidal composition of the mixed compound of the cycloxaprid and the diafenthiuron and the application thereof have not been reported at present.

Disclosure of Invention

The invention aims to provide a compound composition, and the compound composition is prepared into an agricultural compound insecticidal composition with small resistance risk, good insecticidal activity, long drug effect, low cost and small environmental pollution.

The technical scheme of the invention is as follows: the agricultural compound insecticidal composition contains the active ingredients of cycloartemia amide and diafenthiuron.

The weight ratio of the active ingredients of the insecticidal composition, namely the cycloxaprid to the diafenthiuron is 1:80-80:1;

further, the preferred weight ratio of the active ingredients of the cycloxaprid to the diafenthiuron in the composition is 1:50-50:1;

further, the preferred weight ratio of the active ingredients of the cycloxaprid to the diafenthiuron in the composition is 1:20-20:1;

further, the preferred weight ratio of the active ingredients of the cycloxaprid to the diafenthiuron in the composition is 1:5-5:1;

the sum of the content of the active ingredients of the insecticidal composition, namely the cycloxaprid and the diafenthiuron, is 1-90% of the total weight of the composition;

further, the sum of the contents of the active ingredients of the composition, namely the cycloxaprid and the diafenthiuron, is 10-50% of the total weight of the insecticidal composition.

The compositions of the present invention may be diluted by the user prior to use or used directly, and their configuration may be prepared by conventional processing methods well known to those skilled in the art.

The insecticidal composition preparation is prepared from an active ingredient and an auxiliary pesticide ingredient into any one of the allowed dosage forms in the pesticide field;

further, the auxiliary components of the pesticide preparation comprise a carrier and an auxiliary agent;

further, the carrier is any one, two or three of water, a solvent or a filler, and the water is preferably deionized water;

further, the solvent is selected from one or more of N, N-dimethylformamide, cyclohexanone, toluene, xylene, dimethyl sulfoxide, methanol, ethanol, trimethylcyclohexanone, N-octyl pyrrolidone, ethanolamine, triethanolamine, isopropylamine, N-methylpyrrolidone, propanol, butanol, ethylene glycol, diethylene glycol, ethylene glycol methyl ether, butyl ether, ethanolamine, isopropylamine, ethyl acetate or acetonitrile;

further, the filler is selected from one or a mixture of more of kaolin, diatomite, bentonite, attapulgite, white carbon black, starch or light calcium carbonate;

further, the auxiliary agent at least comprises a surfactant, and other functional auxiliary agents such as an antifreezing agent, a thickening agent, a stabilizing agent, a disintegrating agent, a defoaming agent and the like can be added according to different use occasions and requirements;

further, the surfactant is selected from one or more of an emulsifier, a dispersant, a wetting agent or a penetrating agent;

further, the other functional auxiliary agents are selected from one or more of antifreezing agents, thickening agents, stabilizing agents, disintegrating agents or defoaming agents;

further, the emulsifier is selected from one or more of nonylphenol 500# (calcium alkylbenzenesulfonate), OP series phosphate (nonylphenol polyoxyethylene ether phosphate), 600# phosphate (phenylphenol polyoxyethylene ether phosphate), styrene polyoxyethylene ether ammonium sulfate, magnesium alkyldiphenyl ether disulfonate, triethanolamine salt, nonylphenol 400# (benzyl dimethyl phenol polyoxyethylene ether), nonylphenol 700# (alkylphenol formaldehyde resin polyoxyethylene ether), nonylphenol 36# (phenethyl phenol formaldehyde resin polyoxyethylene ether), nonylphenol 1600# (phenethyl phenol polyoxyethylene polypropylene ether), ethylene oxide-propylene oxide block copolymer, OP series (nonylphenol polyoxyethylene ether), BY series (castor oil polyoxyethylene ether), nonylphenol 33# (alkylaryl polyoxyethylene polyoxypropylene ether), span series (sorbitan monostearate) polyoxyethylene ether), tween series (sorbitan polyoxyethylene ether) or AEO series (fatty alcohol polyoxyethylene ether);

further, the dispersing agent is selected from one or more of polycarboxylate, lignosulfonate, alkylphenol ethoxylate formaldehyde condensate sulfate, calcium alkylbenzenesulfonate, naphthalene sulfonate formaldehyde condensate sodium salt, alkylphenol ethoxylate, fatty amine ethoxylate, fatty acid ethoxylate or glycerin fatty acid ester ethoxylate;

further, the wetting agent is selected from one or a mixture of more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, nekal BX, wetting penetrating agent F, chinese honeylocust fruit powder, silkworm excrement or soapberry powder;

further, the penetrating agent is selected from one or a mixture of more of penetrating agent JFC (fatty alcohol polyoxyethylene ether), penetrating agent T (diisooctyl maleate sulfonate), azone or organic silicon;

further, the antifreezing agent is selected from a mixture consisting of one or more of ethylene glycol, propylene glycol, glycerol or urea;

further, the thickener is selected from one or more of xanthan gum, polyvinyl alcohol, bentonite, carboxymethyl cellulose or magnesium aluminum silicate;

further, the stabilizer is selected from one or a mixture of more of epoxidized soybean oil, epichlorohydrin, BHT, ethyl acetate and triphenyl phosphate;

further, the disintegrating agent is selected from one or a mixture of more of bentonite, urea, ammonium sulfate, aluminum chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid or sodium bicarbonate;

further, the defoamer is selected from one or a mixture of more of silicone oil, silicone compounds, C10-C20 saturated fatty acid compounds or C8-C10 fatty alcohol compounds;

all of the above materials are commercially available.

The composition of the present invention may be formulated into a pesticidally acceptable formulation, including solid, liquid, seed treatment, other formulations, according to methods well known to those skilled in the art;

further, the solid preparation is powder, dispersible tablet, granule, soluble powder, soluble granule, soluble tablet, emulsion powder, emulsion granule, water dispersible granule, wettable powder, microcapsule granule, powder, large granule and water dispersible tablet;

further, the liquid preparation is microcapsule suspending agent, dispersible agent, emulsifiable concentrate, emulsion, oil emulsion, emulsion powder, aqueous emulsion, microemulsion, dispersible oil suspending agent, oil dispersion powder, suspending agent, solution and ultra-low volume liquid;

further, the seed treatment preparation is a suspension seed coating agent, a seed treatment dry powder agent, a seed treatment dispersible powder agent, a seed treatment suspending agent and a seed treatment liquid agent;

further, other formulations are baits, concentrated baits, gaseous formulations, aerosols, smoke formulations;

further, the preparation formulation is preferably suspending agent, microemulsion, emulsifiable concentrate, wettable powder and water dispersible granule;

further, the composition is prepared into a suspending agent, and the suspending agent comprises the following components in percentage by weight: 0.1 to 80 percent of cycloartemia amide, 0.1 to 80 percent of diafenthiuron, 2 to 10 percent of dispersing agent, 2 to 10 percent of wetting agent, 0.01 to 2 percent of defoaming agent, 0 to 2 percent of thickening agent, 0 to 8 percent of antifreeze agent and the balance of deionized water;

further, the composition is prepared into microemulsion, and the components and the content of the microemulsion are preferably as follows: 0.1 to 80 percent of cycloartemia amide, 0.1 to 80 percent of diafenthiuron, 10 to 25 percent of solvent, 5 to 15 percent of emulsifier and the balance of deionized water;

further, the composition is prepared into emulsifiable concentrates, and the components and the content of the emulsifiable concentrates are preferably as follows: 0.1 to 80 percent of cycloartemia amide, 0.1 to 80 percent of diafenthiuron, 1 to 10 percent of emulsifier and the balance of solvent;

further, the composition is prepared into wettable powder, and the components and the content of the wettable powder are preferably as follows: 0.1 to 80 percent of cycloartemia amide, 0.1 to 80 percent of diafenthiuron, 2 to 10 percent of dispersing agent, 2 to 10 percent of wetting agent and the balance of filler;

further, the composition is prepared into water dispersible granules, and the components and the content of the water dispersible granules are preferably as follows: 0.1 to 80 percent of cycloartemia amide, 0.1 to 80 percent of diafenthiuron, 3 to 12 percent of dispersing agent, 1 to 8 percent of wetting agent, 1 to 10 percent of disintegrating agent and the balance of filler.

The invention has the following advantages: 1) The synergy is obvious, the simple superposition of the activities of the components is not realized, and the efficacy is greatly improved; 2) The prevention and treatment effect is outstanding, the duration is long, and the resistance risk is small; 3) The field dosage of the active ingredients is reduced, the production and use cost is reduced, and the pesticide residue and the environmental pollution are reduced; 4) The composition consists of active ingredients with different action mechanisms, and the action sites are increased, so that the generation of drug resistance of pests is overcome and delayed.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more concise, the present invention will be described in the following specific examples, but the present invention is by no means limited to these examples. The following examples are only preferred embodiments of the present invention, which can be used to describe the present invention, and should not be construed as limiting the scope of the invention. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Case of preparation

Example 1:30% cycloartemia amide diafenthiuron suspending agent

The formula comprises the following components: 5% of cycloxaprid, 25% of diafenthiuron, 4% of polyoxyethylene polyoxypropylene ether, 1.5% of sodium lignin sulfonate, 0.25% of xanthan gum, 1.5% of magnesium aluminum silicate, 1% of sodium benzoate, 3% of propylene glycol, 0.5% of silicone oil and the balance of deionized water;

the preparation method comprises the following steps: according to the formula, water, a dispersing agent and a wetting agent are uniformly mixed, an antifreeze agent and a thickening agent are sequentially added under the stirring state, the mixture is uniformly sheared and mixed at a high speed, the cycloartemia amide and the diafenthiuron are further added, the mixture is continuously sheared and uniformly mixed, the mixture is ground in a horizontal sand mill, the particle size of the material is totally below 5 mu m, and the defoaming agent is added, so that the suspending agent is prepared after shearing uniformly.

Example 2:7% Cyclotrimide-diafenthiuron microemulsion

The formula comprises the following components: 2% of cycloartemia amide, 5% of butyl ether urea, 3% of sodium dodecyl benzene sulfonate, 7% of phenethyl phenol polyoxyethylene polyoxypropylene ether, 3% of N-methyl pyrrolidone, 3.5% of sodium lignin sulfonate, 1.3% of polyvinyl alcohol, 1.8% of dicyclohexylmethane diisocyanate and the balance of deionized water;

the preparation method comprises the following steps: according to the formula proportion of the embodiment, the active ingredients of the cycloartan and the diafenthiuron are completely dissolved by using a solvent and a cosolvent, then other auxiliary agents are added, the mixture is uniformly mixed, finally water is added, and the microemulsion is prepared after full stirring.

Example 3:15% Cyclotrimide butyl ether urea emulsifiable concentrate

The formula comprises the following components: 6% of cycloartemia amide, 9% of diafenthiuron, 5% of alkyl diphenyl ether disulfonate magnesium salt, 8% of triethanolamine salt, 10% of N-dimethylformamide, 5% of cyclohexanone and the balance of soybean oil;

the preparation method comprises the following steps: the preparation method comprises the steps of adding the active ingredients of the cycloxaprid and the diafenthiuron into a carrier according to the formula proportion of the embodiment, adding the surfactant and other functional additives into the carrier, and stirring and uniformly mixing in a stirring and mixing kettle to obtain the emulsifiable concentrate.

Example 4:40% wettable powder of cycloxaprid-butyl ether urea

The formula comprises the following components: 20% of cycloartemia amide, 20% of diafenthiuron, 3% of sodium dodecyl sulfate, 6% of sodium lignin sulfonate, 5% of diatomite, 3% of white carbon black and the balance of kaolin;

the preparation method comprises the following steps: the preparation method comprises the steps of mixing the cycloartemia amide, the diafenthiuron, the dispersing agent, the wetting agent and the filler according to the formula, uniformly stirring in a stirring kettle, crushing by a jet mill, and uniformly mixing to obtain the wettable powder.

Example 5:25% cycloxaprid-diafenthiuron water dispersible granule

The formula comprises the following components: 10% of cycloartemia amide, 15% of diafenthiuron, 5% of sodium lignin sulfonate, 2.5% of sodium dodecyl sulfate, 5% of urea, 5% of white carbon black and the balance of kaolin;

the preparation method comprises the following steps: according to the formula, diafenthiuron, cycloartane amide, a dispersing agent, a wetting agent, a disintegrating agent and a filler are uniformly mixed, then the mixture is crushed by an airflow crusher, the crushed material is kneaded, then the kneaded material is granulated by an extrusion granulator, then the granulated material is dried by a fluidized bed dryer, and finally the granulated material is sieved and granulated by a granulator, so that the water dispersible granule is prepared.

Indoor Activity assay

Example 6: indoor activity test of tea leafhoppers by mixing diafenthiuron and cycloartemia amide

Test purpose: the indoor toxicity to tea leafhoppers of the tea tree is measured by a spraying method by using the diafenthiuron and the cycloartemia amide suspending agent which is compounded by using the diafenthiuron and the cycloartemia amide as active ingredients. Tests prove that whether the two compounds have synergistic effect or not, and the optimal formula is screened, so that scientific basis is provided for registering the medicament.

Test target: tea leafhopper is obtained from tea garden in east harbor area of Japanese city, and is fed with tea bud head indoors.

Culture conditions: the test is carried out in an artificial intelligent incubator, the temperature is 25+/-1 ℃, the humidity is 70 percent, and the illumination is carried out: darkness = 14h 10h, daytime illumination 2000Lux

Instrument: electronic balance (sensing amount 0.1 mg), filter paper, artificial intelligent incubator, glass insect-breeding cover, absorbent cotton, writing brush, beaker, etc.

Test agent: 95% diafenthiuron technical and 95% cycloxaprid technical.

Preparing liquid medicine and setting dosage: the method comprises the steps of dissolving diafenthiuron original drug and cycloartemia original drug analytically pure dimethylformamide to prepare a mother solution of 100g/L, and then mixing the mother solution with the active ingredients in a mass ratio of 1:5, 1:3, 1:1, 3:1 and 5:1 (diafenthiuron: cycloartemia) to prepare a mixed agent mother solution. The aqueous solution containing 0.1% Tween 80 was diluted to the following concentration (unit: mg/l) at the time of use.

Test replicates: each concentration treatment was repeated 4 times

The treatment method comprises the following steps: according to the indoor bioassay test rule of pesticide (agricultural industry standard NY/T1154.6-2006), an insect dipping method is adopted, tea tree branches of nymphs are placed in a refrigerator for 5-10min, when the insect dipping method is inactive, tea tree branches with more nymphs are selected, low-age nymphs and adults are removed, the tea tree branches of the nymphs are immersed in liquid medicines with different concentrations to be tested for 10s, the base is moisturized by cotton balls after being dried, the cotton balls are placed in a straight cylindrical glass insect culturing cover, and the upper part of the cotton balls is fastened by nylon nets. After the treatment, the seeds are placed in an artificial intelligent incubator for feeding.

Investigation time and method: the death of the test insects was investigated 2 days after the treatment with the agent, and the number of live insects and the number of dead insects were recorded.

Data statistical analysis: based on the investigation result, the corrected mortality rate of the test insects for each treatment concentration was calculated in the following formula in percent (%).

According to the investigation result, calculating the death rate and the prevention and treatment effect

LC of each drug was determined by taking the logarithmic value of the drug concentration (mg/L) as the independent variable (X), and the probability value of the corrected mortality as the dependent variable (Y) ₅₀ Calculating co-toxicity coefficient (CTC)

Evaluation mode: CTC <80 indicates antagonism between the individual doses comprising the cocktail; CTC between 80 and 120 indicates that the addition effect exists among the single agents forming the mixture; CTC >120 indicates a synergistic effect between the individual doses comprising the blend.

Analysis and discussion of results:

TABLE 1 Combined toxicity of the mixed pair of diafenthiuron and Cyclofenapyr

The examination results after 48 hours of the same dose treatment are shown in Table 1. And (3) establishing a regression equation by taking the logarithmic value of the concentration of the medicament as X and the probability value of the corrected mortality as Y, and calculating the co-toxicity coefficient. The measurement results show that: the diafenthiuron and the cycloxaprid are compounded in a ratio of 1:5, 1:3, 1:1, 3:1 and 5:1, and the co-toxicity coefficients of the diafenthiuron and the cycloxaprid are 110.37, 162.70, 173.68, 188.65 and 206.86 respectively, wherein the co-toxicity coefficient compounded in the ratio of 5:1 is the highest, the synergistic effect is the most obvious, and the best ratio of the diafenthiuron and the cycloxaprid for compound control is achieved.

The lethal medium concentration and co-toxicity coefficient of five different proportions of diafenthiuron and cycloartemia amide are measured by an insect dipping method. The results show that: the two compounds show a certain additive or synergistic effect, wherein the co-toxicity coefficient of diafenthiuron and cycloartemia amide 5:1 (25:5) is highest, and reaches 206.86, and the synergistic effect is most remarkable. Therefore, the ratio is the optimal ratio of diafenthiuron and cycloxaprid for compound control.

The results are completed in an indoor test, various indoor environmental conditions have large differences with the field, and the field efficacy test is recommended to be carried out to further verify the rationality of the formula and determine the range of the dosage to be used.

Field efficacy test

Example 7: field efficacy test of 30% diafenthiuron-cycloartemia amide suspending agent for preventing and controlling tea leafhopper

Test purpose: for many years, the tea leafhoppers mainly depend on pesticides such as acetamiprid, imidacloprid and the like, and a single pesticide is used for a large amount for a long time, so that serious drug resistance is generated, and the control effect is not ideal. The test is developed for verifying the effect of the 30% diafenthiuron and cycloartemia mixture on the field efficacy test of tea trees, and providing a basis for production popularization and application.

Selection of test subjects, crops and varieties: tea leafhoppers (Empoasca flavescen), tea trees (Zhejiang 113).

Environmental or facility cultivation conditions: the test Tian Deshi is flat, the fertility is moderate, the soil texture is medium loam, the organic matter content is 2%, and the fertilizer and water management and other cultivation conditions of the test land are the same.

Test agent and dosage: see table 2.

Cell area and repetition: 20m per cell ² The method comprises the steps of carrying out a first treatment on the surface of the Number of repetitions: 4 times.

The application method comprises the following steps: the conventional sprayer is adopted to ensure accurate and uniform dosage and distribution of foliar spray

Time and frequency of application: the medicine is applied once in 2018, 6 and 15 days.

Investigation method, time and number: investigation time and number: the first investigation was conducted for 6 months 17, the second investigation was conducted for 6 months 22, and the 2 nd investigation was conducted.

The investigation method comprises the following steps: investigation can be carried out on all days of cloudy days without thousands of dew in the morning. The number of nymphs on 100 young leaves per cell (2 nd young leaves are typically removed from the buds) was randomly investigated.

The drug effect calculation method comprises the following steps:

according to standard GB/T17980.56-2004

Reduction rate of insect population (%) = [ (number of live insects before administration-number of live insects after administration)/number of live insects before administration ] ×100

Results and analysis:

the results of the efficacy test data of the 30% diafenthiuron-cycloartemia amide suspending agent for preventing and controlling tea leafhoppers are shown in Table 2.

TABLE 2 results of field efficacy test of 30% Cyclobromamide-diafenthiuron suspending agent for controlling tea leafhoppers

Drug evaluation: from the field test results, it can be seen (see table 2) that the 30% diafenthiuron-cycloartemia amide suspending agent has a good effect on controlling tea leafhoppers of the tea tree. Under the condition of 1500 times of liquid, the rate of the reduction of the insect population in 2 days after the medicine and the rate of the reduction of the insect population in 7 days after the medicine are both higher than the rate of the reduction of the insect population of the single agent and the local conventional agent. In the test process, the 30% diafenthiuron-cycloartemia amide suspending agent is not found to have influence on tea trees and main natural enemies, and can be popularized and applied.

Example 8: field efficacy of diafenthiuron and cycloartemia amide mixed on peach fruit borer

Test purpose: through field experiments, the control effect of the 30% diafenthiuron-cycloartemia suspending agent on the peach fruit borers is clear, and the basis is provided for pesticide registration, popularization and application.

Selection of test subjects, crops and varieties: the test crop is 6 years old peach tree, the variety is long-term, the test insect is peach fruit borer (Carposina nipponensis), and the test crop happens moderately in the year.

Environmental conditions: the test field is arranged in a Hailier ecological garden in Laiyi, shandong province, the peach tree variety is long-term, 6-year-old, the irrigation condition is good, and the soil fertility is moderate.

Test agent and dosage: see table 3.

Cell area and repetition: 3 trees are set in each cell, and the tree is repeated for 4 times.

The application method comprises the following steps: the medicine starts to be used for peach fruit borer.

Time and frequency of application: once in 2018, 4 and 27.

The use capacity is as follows: the spraying is uniform, and the average spraying liquid amount per cell is 12-15 kg until most of the leaves drop.

Investigation time and number: the cardinal numbers were investigated before administration and once 14 days after administration.

The drug effect calculation method comprises the following steps: the prevention and treatment effect is expressed by the corrected rate of the reduction of the insect population, and the statistical calculation is carried out according to the method specified in the national standard of the people's republic of China GB/T17980.65-2000 pesticide field efficacy test criterion (II).

Reduction rate of insect population (%) = [ (number of live insects before administration-number of live insects after administration)/number of live insects before administration ] ×100

Control effect (%) = (treatment area reduction rate-control area reduction rate)/(100-control area reduction rate) ×100

Direct impact on crops: no phytotoxicity or other growth-stimulating effects on peach trees were observed during the experimental observations.

Results and analysis

Table 3 results of field efficacy test of 30% Cyclondiamide diafenthiuron suspension for controlling peach fruit borer

Drug efficacy evaluation: the test result shows that the test agent 30% diafenthiuron-cycloartemia amide suspending agent has good control effect on peach fruit borer, the control effect is 96.15% in 14 days after administration, good persistence is shown, and the suspension agent has no phytotoxicity on peach trees and can be popularized and applied in production.

The indoor activity and field efficacy test results show that the diafenthiuron and the cycloartemia amide can effectively prevent and treat tea leafhoppers and peach fruit borers after being compounded, the composition has obvious synergistic effect, the prevention and treatment effects are better than those of single dosage, and the prevention and treatment period is long; has no adverse effect on tea trees and peach trees in the application range of the test, and has application value.

Claims (6)

1. The insecticidal composition containing the cycloxaprid and the diafenthiuron is characterized in that the active ingredients of the composition consist of the cycloxaprid and the diafenthiuron, and the weight ratio of the active ingredients of the diafenthiuron to the active ingredients of the cycloxaprid is 1:3-5:1.

2. A pesticidal composition according to claim 1, wherein the sum of the active ingredient contents in the composition is from 1% to 90% by weight of the total composition.

3. A pesticidal composition according to claim 1, wherein the sum of the active ingredient contents in the composition is from 10% to 50% by weight of the total composition.

4. The insecticidal composition of claim 1, wherein said composition is formulated in an agriculturally acceptable dosage form, said dosage form being any one of a tablet, a granule, a powder, and a suspension.

5. The insecticidal composition of claim 1, wherein said composition is formulated as an agriculturally acceptable formulation, said formulation comprising any one of water dispersible granules, wettable powders, micro-encapsulated granules, macro-granules, water dispersible tablets, micro-encapsulated suspensions, dispersible liquids, emulsifiable concentrates, aqueous emulsions, micro-emulsions, dispersible oil suspensions, oil dispersible powders, suspoemulsions, ultra-low volume liquids, seed-treatment dry powders, seed-treatment dispersible powders, seed-treatment suspensions.

6. Use of the insecticidal composition according to any one of claims 1 to 5 for controlling tea leafhoppers.