CN1176589C - Benzoylurea and Pyrethroid Mixed Pesticide Preparation - Google Patents

Abstract

The present invention relates to a method for the mixture of agricultural chemicals. Benzoylurea and pyrethroid are used as main raw materials for mixture; the products simultaneously reserve the advantages of high efficiency and low toxicity of benzoylurea pesticides, overcome the disadvantages of the easy manufacture resistance of pyrethroid pesticides, enhance the effect of medicine use, enlarge the range of medicine use, prolong the service life of the medicine and make up the self insufficiency of the single agent agricultural chemicals; thus, the agricultural chemicals are particularly suitable for controlling various pests with serious medicine resistance.

Description

Benzoylurea and Pyrethroid Mixed Pesticide Preparation

                      

The invention belongs to the compounding of pesticides and a preparation method thereof, in particular to the compounding of benzoyl ureas and pyrethroids.

technical background

Benzoylurea insecticides are a class of high-efficiency and low-toxicity insecticides, especially for Lepidoptera pests with high efficiency and strong selectivity. The disadvantages are that they act slowly and are prone to phytotoxicity to cruciferous plants. The advantage of pyrethroid insecticides is that they can quickly kill pests, and their insecticidal spectrum is wider than that of benzoylurea insecticides, but they are prone to resistance.

The purpose of the present invention is to obtain a mixed preparation that can overcome pest resistance, expand insecticidal spectrum and improve drug effect after rational mixing of benzoyl ureas and pyrethroids.

Technical content

In the present invention, benzoylurea insecticides and pyrethroid insecticides are mixed to obtain emulsifiable concentrate preparations, wettable powders, oil suspoemulsions, microemulsions, water-dispersible granules, or microcapsules , or effervescent tablets. The composition of the benzoylurea insecticide is 0.1-50% by weight, the content of the pyrethroid insecticide is 0.5-50% by weight, and the rest are auxiliary agents. The benzoyl urea insecticide is bistrifluron, or flucycloxuron, or novaluron, or penfluron, or teflubenzuron, or triflumuron, or flucycloxuron, or lice One or more of difenuron, or chlorfluazuron, or diflubenzuron, or flubenzuron, or triflubenuron, or diflubenzuron. When using more than one, the total amount used should not be greater than the maximum serving size. Benzoylurea insecticides can be original drugs or preparations.

Pyrethroid insecticides are tetramethrin, or diethrin, or methothrin, or allethrin, or d-allethrin, or pyrethrin, or permethrin, or cyanogen permethrin, or valethrin, or fenvalerate, or esfenvalerate, or flucyvalerate, or cypermethrin, or lambda-cypermethrin, or deltamethrin, or ethofenprox, or bromoflu One or more of permethrin, or permethrin. When using more than one, the total amount used should not be greater than the maximum serving size. Its insecticidal active ingredients can be original medicine or preparation.

The aforementioned auxiliary agents are:

When preparing emulsifiable concentrate, its auxiliary agent is:

The surfactant accounts for 5-30% by weight of the preparation, and the surfactant is one or more of nonionic polyoxyethylene ethers, or anionic alkyl sodium sulfate, or alkylbenzenesulfonate When using multiple types, the total amount used cannot exceed the maximum value of the serving size;

The solvent accounts for 10-80% of the preparation by weight. The solvent is various aromatic hydrocarbons, aliphatic hydrocarbons, ketones, ethers, and can be used in benzene, toluene, xylene, decalin, gasoline, kerosene, engine oil, methyl ethyl ketone, propylene glycol ether, butyl One or more of glycol ether and petroleum ether, when using more than one, the total usage should not be greater than the maximum amount;

The co-solvent accounts for 0.5-3% by weight of the preparation, and the co-solvent is one or more of isoamyl alcohol, phenol, ethyl acetate, and dimethyl sulfoxide. When using multiple maximum value;

The pH regulator accounts for 0.5-1% by weight of the preparation, and the pH regulator is one or more of sodium hydroxide, ammonium hydroxide, acetic acid, hydrochloric acid. maximum value;

The synergist accounts for 0.5-25% by weight of the preparation. The synergist is one or more of synergistic ether, synergistic sulfone, alkyl carbonate, chlorinated fat, and formaldehyde. The amount cannot be greater than the maximum serving size;

The penetrating agent accounts for 0.5-2% by weight of the preparation, and the penetrating agent is one or more of laurocapram, JFC-2, and di-sec-octyl sodium maleate sulfonate. When using multiple , the total usage cannot be greater than the maximum serving size;

When preparing wettable powder, its auxiliary agent is:

The wetting agent accounts for 3-35% by weight of the preparation, and the wetting agent is a natural product wetting agent and anionic wetting agent, which can be used for tea, saponin powder, sapinberry powder, silkworm excrement, sodium lauryl sulfate, dodecane One or more of sodium phenylsulfonate, washing powder, and pull-off powder. When using more than one, the total usage amount should not exceed the maximum value;

The dispersant accounts for 4-30% by weight of the preparation, and the dispersant is an industrial by-product and anionic dispersant, which can be used for sulfurous acid pulp waste liquid, lignin and derivative sulfonate, naphthalene and alkylnaphthalene formaldehyde condensate sulfonic acid One or more kinds of salt, when using more than one, the total amount used cannot exceed the maximum value of the portion;

The filler accounts for 20-70% by weight of the preparation. The filler is a mineral carrier or a synthetic carrier. One or more of kaolin, diatomaceous earth, and white carbon black can be used. maximum value;

When preparing oil suspension concentrates, its assistants are:

The organic solvent accounts for 10-60% by weight of the preparation, and the organic solvent is one or more of transformer oil, machine oil, and dichloroethane. When using more than one, the total amount used cannot exceed the maximum value of the portion;

The wetting agent accounts for 5-20% by weight of the preparation, and the wetting agent is one or more of fatty alcohol sulfate, alkylaryl sulfonate, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, When using more than one, the total amount used should not be greater than the maximum value of the serving size;

The dispersing agent accounts for 5-30% by weight of the preparation, and the dispersing agent is lignosulfonate such as sodium lignosulfonate, calcium lignosulfonate, alkylnaphthalenesulfonate such as pull-off powder, naphthalenesulfonic acid formaldehyde condensation One or more of the salts of substances, and when using more than one, the total amount used cannot exceed the maximum value of the portion;

The tackifier accounts for 1-10% by weight of the preparation, and the tackifier is one or more of dispersible silica gel, silica airgel, clay minerals such as bentonite, and polymer compounds such as xanthan gum. When planting, the total amount used cannot exceed the maximum value of the serving size;

The stabilizer accounts for 0.5-5% by weight of the preparation. The stabilizer is one or more of xanthan gum and magnesium aluminum silicate.

The antifoaming agent accounts for 0.5-8% by weight of the preparation, and the antifoaming agent is one of organic silicones, C ₈ -C ₁₀ fatty alcohols, C ₁₀ -C ₂₀ saturated fatty carboxylic acids and their esters, and polyglycerin or more, when using more than one, the total amount used cannot exceed the maximum value of the serving size;

When preparing microemulsions, its auxiliary agents are:

The solvent accounts for 10-80% by weight of the preparation, and the solvent is one or more of alcohols, ketones, esters and aromatic hydrocarbons. When using multiple solvents, the total usage amount cannot exceed the maximum value of the part;

The emulsifier accounts for 5-30% by weight of the preparation, and the emulsifier is calcium salt of alkylbenzenesulfonate, magnesium salt of alkylbenzenesulfonate, aluminum salt of alkylbenzenesulfonate, sodium salt of alkylbenzenesulfonate, alkylbenzenesulfonate Barium sulfonate salt, C ₈ -C ₂₀ alkyl sulfate sodium salt, styrene polyoxyethylene ether ammonium sulfate salt, benzyl biphenol polyoxyethylene ether, phenylethylphenol polyoxyethylene (N=15～30) ether , phenylethylphenol polyoxyethylene polyoxypropylene, nonylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether methyl condensate, biphenol polyoxyethylene ether, one of domestic agricultural milk No. 700 and No. 300 or more, when using more than one, the total amount used cannot exceed the maximum value of the serving size;

The stabilizer accounts for 0.5-5% by weight of the preparation, and the stabilizer is 3-chloro-1,2-propylene oxide, butyl glycidyl ether, phenyl glycidyl ether, cresyl glycidyl ether, polyvinylethylene glycol One or more of alcohol diglycidyl ether and sodium sorbitol, when using more than one, the total usage amount should not be greater than the maximum amount;

The antifreeze accounts for 0.5-10% by weight of the preparation, and the antifreeze is one or more of ethylene glycol, glycerol, propylene glycol, polyethylene glycol, and sorbitol. When using multiple types, the total usage cannot exceed maximum serving size;

When preparing water-dispersible granules, its auxiliary agents are:

The wetting agent accounts for 5-20% by weight of the preparation, and the wetting agent is saponin, sulfurous acid pulp waste liquid, hydrolyzate of animal waste, alkyl sulfate, α-olefin sulfonate, alkali metal salt of alkylbenzenesulfonate And amine salt, dialkyl succinic acid sulfonic acid sodium salt, fatty alcohol, fatty amide N-methyl taurine sodium salt, fatty alcohol polyoxyethylene ether sodium sulfate, alkylphenol polyoxyethylene ether sulfate, alkane Sodium naphthalene sulfonate, fatty acid or fatty acid ester sulfate, sodium lignin sulfonate, sodium petroleum sulfonate, sodium alkyl diphenyl ether sulfonate, sodium naphtholsulfonic acid formaldehyde condensate, polyoxyethylene fatty acid ester sulfonate Sodium acid sodium and ammonium salt, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene, when using more than one, the total usage amount cannot be greater than the maximum value of the weight;

The binder accounts for 1-10% by weight of the preparation, and the binder is starch, dextrin, gum arabic, soybean protein, casein, bone glue and gelatin, sodium silicate, gypsum, polyvinyl acetate, polyvinyl alcohol, One or more of rosin, shellac, paraffin, asphalt, and ethylene-vinyl acetate copolymer resin. When using more than one, the total usage amount cannot exceed the maximum value;

The disintegrating agent accounts for 5-10% by weight of the preparation. The disintegrating agent is one or more of ammonium sulfate, calcium chloride, table salt, magnesium chloride, aluminum chloride, urea, and bentonite. The amount cannot be greater than the maximum serving size;

The carrier accounts for 30-70% by weight of the preparation, and the carrier is soybean, tobacco, acorn, corn cob, rice husk, sulfur, diatomaceous earth, quicklime, magnesium lime, apatite, calcite, dolomite, gypsum, mica , talc, pyrophyllite, clay, kaolinite, pearl clay, dickite, silicon-rich kaolinite, montmorillonite, activated clay, pumice, when using more than one, the total usage Cannot be larger than the maximum serving size;

When preparing microcapsules, its auxiliary agent is:

The dispersant accounts for 10-30% by weight of the preparation, and the dispersant is one or more of polyvinyl alcohol, polyethylene glycol, gelatin, gum arabic, carboxymethyl cellulose, magnesium aluminum silicate, and sodium lignosulfonate When using multiple types, the total amount used cannot exceed the maximum value of the serving size;

The capsule skin substance accounts for 10-50% by weight of the preparation, and the capsule skin substance is gelatin, gum arabic, starch, polyvinylpyrrolidone, carboxymethyl fiber, hydroxyethyl fiber, methyl fiber, and arabinose galactan , polyvinyl alcohol, polyacrylic acid, ethyl fiber, polyethylene, polymethacrylate, polyamide, polyethylene-vinyl acetate, nitrocellulose, silicones, polyesters, polyureas, poly( One or more of terexylyl), paraffin, palm wax, spermaceti, beeswax, stearic acid, stearyl alcohol, glyceryl stearate, shellac, cellulose acetate benzoate, corn gluten When using multiple types, the total amount used cannot exceed the maximum value of the serving size.

In order to better understand the essence of the invention, the technical content of the invention is illustrated below with examples, but the content of the present invention is not limited thereto.

Example one: the preparation of 5% chlorfluazuron beta-cypermethrin emulsifiable concentrate, the distribution ratio of each component is:

Chlorfluazuron is 1% (weight);

Beta-cypermethrin is 4% (weight);

Cosolvent: dimethyl sulfoxide is 2% (weight);

Surfactant: dodecylphenol polyoxyethylene ether is 15% (weight);

Solvent: xylene is 78% (weight);

Put each component into the preparation kettle and mix thoroughly to obtain the product.

Example two: the preparation of 5% flufenuron-fenvalerate oil suspension concentrate, the distribution ratio of each component is:

Flubenzuron is 2% (weight);

Fenvalerate is 3% (weight);

Wetting agent: sodium lauryl sulfate is 10% (weight);

Dispersant: sodium lignosulfonate is 25% (weight);

Tackifier: xanthan gum is 5% (weight);

Stabilizer: gum arabic is 3% (weight);

Defoamer: foam enemy is 7% (weight);

Organic solvent: transformer oil is 45% (weight);

Put each component into a sand mill and grind it, then put it into a homogeneous mixer and mix it evenly to get the product.

Example three: the preparation of 5% chlorfluazuron fenvalerate wettable powder, the distribution ratio of each component is:

Chlorfluazuron is 1% (weight);

Fenvalerate is 4% (weight);

Wetting agent: sodium lauryl sulfate is 20% (weight);

Dispersant: alkyl sulfonate is 15% (weight);

Carrier: kaolin is 60% (weight);

The components are dried, cooled, mixed and ground to obtain the product.

Experimental results of mixed preparations of benzoylureas and pyrethroids:

Table 1 shows the control effect of 5% hexazuron·beta-cypermethrin EC on diamondback moth larvae

Table 2 is: the control effect of 5% flufenuron·fenvalerate SC on diamondback moth larvae

Table 3 is: the control effect of 5% diflubenzuron · fenvalerate wettable powder on diamondback moth larvae

It can be seen from Table 1 that the insecticidal activity of 5% dichlorfluazuron-beta-cypermethrin EC mixture is higher than that of dichlorfluazuron and beta-cypermethrin single agent. 1000 times of 5% hexazuron·beta-cypermethrin EC had 83.05% and 91.96% control effects on Plutella xylostella larvae for 2 days and 5 days respectively, The control effects are only 52.06% and 83.52%; the control effects of 800 times 4.5% beta-cypermethrin EC on diamondback moth larvae for 2 days and 5 days are only 33.09% and 40.92%.

It can be seen from Table 2 that the insecticidal activity of 5% diflubenzuron·fenvalerate suspension concentrate is higher than that of diflubenzuron and fenvalerate single agent. 1000 times of 5% diflubenzuron · fenvalerate SC had 83.84% and 91.65% control effect on Plutella xylostella larvae for 2 days and 5 days respectively, and 5-day control effects are only 51.91% and 83.50%; 800 times 20% fenvalerate EC has only 34.75% and 38.70% control effects on Plutella xylostella larvae for 2 days and 5 days.

It can be seen from Table 3 that the insecticidal activity of 5% diflubenzuron·fenvalerate wettable powder is higher than that of diflubenzuron and fenvalerate single agent. 1000 times of 5% diflubenzuron · fenvalerate WP to Plutella xylostella larvae for 2 days and 5 days were 83.93% and 89.92%. The control effects of days and 5 days are only 51.51% and 81.63%; 800 times of 20% fenvalerate EC have only 21.48% and 29.05% of control effects on 2 days and 5 days of 3rd instar larvae of Plutella xylostella.

From the above drug effect test, it is shown that the compounded pesticide of the present invention has a significant control effect on the control of pests compared with the original pesticide.

The calculation formula in Table 1-3 is:

Decrease rate of insect population (%)=[(base number of insect population before drug-number of living insects after drug treatment)/base number of insect population before drug treatment]×100%

Treatment Diluted Re-drug Before drug 2 days after drug 5 days after drug

Multiples Multiple Insect Population Live Insect Population Reduction Average Insect Population Control Efficiency Live Insect Population Reduction Average Insect Population Control Efficacy

Base (head) Number (head) Reduction rate (%) Reduction rate (%) (%) Number (head) Reduction rate (%) Reduction rate (%) (%)

Chlorfluazuron 5% 1 141 30 78.72 83.11 83.05 25 82.27 92.08 91.96

Beta-cypermethrin 1000 2 135 24 82.22 5 96.30

EC 3 129 15 88.37 3 97.67

Chlorfluazuron 5% 1 123 65 47.15 52.21 52.06 19 84.55 83.77 83.52

EC 1000 2 114 50 56.14 21 81.58

3 135 63 53.33 20 85.19

4.5% HPC 1 135 104 22.96 33.31 33.09 90 33.33 41.81 40.92

Permethrin EC 800 2 139 88 36.69 80 42.45

3 149 89 40.27 75 49.66

1 117 115 1.71 0.32 116 0.85 1.52

Control 2 128 128 0.00 129 -0.78

                                                                                                         

Table 1

Treatment Diluted Re-drug Before drug 2 days after drug 5 days after drug

Multiples Multiple Insect Population Live Insect Population Reduction Average Insect Population Control Efficacy Live Insects Insect Population Reduction Average Insect Population Control Efficacy

Base (head) Number (head) Regression rate (%) Reduction rate (%) (%) Number (head) Reduction rate (%) Reduction rate (%) (%)

5% diflubenzuron 1 1 101 21 79.21 84.19 83.84 12 88.12 92.15 91.65

Fenvalerate 1000 2 95 16 83.16 8 91.58

Suspending agent 3 92 9 90.22 3 96.74

5% flufenuron 1 112 54 51.79 52.95 51.91 20 82.14 84.48 83.50

Suspending agent 1000 2 100 39 61.00 14 86.00

3 102 55 46.08 15 85.29

20% cyanovaler 1 130 84 35.38 36.17 34.75 78 40.00 42.34 38.70

Permethrin EC 800 2 123 78 36.59 68 44.72

3 104 66 36.54 60 42.31

1 102 100 1.96 2.17 97 4.90 5.95

Control 2 110 105 4.55 100 9.09

3 104 104 0.00 100 3.85

Table 2

Treatment Diluted Re-dose Before drug 2 days after drug 5 days after drug

  Multiple   Multiple   Insect population   Live worm population reduction   Average worm population   Control effect   Live worm population   Reduction   Average worm population Control effect

Base number (head) Number (head) Reduction rate (%) Reduction rate (%) (%) Number (head) Reduction rate (%) Reduction rate (%) (%)

5% diflubenzuron 1 102 20 80.39 83.98 83.93 14 86.27 90.17 89.92

Fenvalerate 1000 2 98 17 82.65 10 89.80

Wettable powder 3 90 10 88.89 5 94.44

20% diflubenzuron 1 110 56 49.09 51.67 51.51 20 81.82 82.09 81.63

Suspending agent 1000 2 103 41 60.19 16 84.47

3 105 57 45.71 21 80.00

20% cyanovaler 1 135 106 21.48 21.73 21.48 98 27.41 30.85 29.05

Permethrin EC 800 2 123 100 18.70 89 27.64

3 120 90 25.00 75 37.50

1 100 100 0.00 0.31 99 1.00 2.54

Control 2 106 105 0.94 100 5.66

3 104 104 0.00 103 0.96

table 3

Claims (4)

1. A mixed pesticide preparation of chlorfluazuron and pyrethroid insecticides, characterized in that 0.1-50% by weight of chlorfluazuron and 0.5-50% by weight of pyrethroid insecticides , and the rest are mixed with additives, and the pyrethroid insecticides are beta-cypermethrin or fenvalerate. 2. The mixed pesticide preparation according to claim 1, characterized in that it is made into emulsifiable concentrate, wettable powder, oil suspension, microemulsion, water dispersible granule or microcapsule. 3. The mixed pesticide preparation according to claim 2, characterized in that hexazuron-beta-cypermethrin emulsifiable concentrate is made, and the weight ratio of each component is: Chlorfluazuron 1%, Beta-cypermethrin is 4%, Dimethyl sulfoxide is 2%, Dodecylphenol ethoxylate is 15%, Xylene is 78%. 4. The mixed pesticide preparation according to claim 2, characterized in that the wettable powder of fenvalerate is made of chlorfluazuron, and the weight ratio of each component is: Chlorfluazuron 1%, Fenvalerate is 4%, Sodium Lauryl Sulfate 20%, Alkane Sulfonate 15%, Kaolin is 60%.