CN107616173B - Composition containing ZJ10520 and pyrimidine bactericide - Google Patents
Composition containing ZJ10520 and pyrimidine bactericide Download PDFInfo
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Abstract
The invention discloses a composition containing ZJ10520 and pyrimidine bactericide and the bactericide thereof, the sterilization effect of the composition is obviously improved compared with that of a single agent, the treatment and protection effects are achieved, the sterilization effect is good, the medication cost is low, the generation of resistance can be slowed down, and the service life of the bactericide is prolonged.
Description
Technical Field
The invention belongs to the field of pesticides, and relates to a bactericidal composition for preventing and treating agricultural diseases.
Background
In agricultural production processes, fungal diseases are a major factor affecting yield and quality. In order to improve the yield and quality of crops, pesticides for preventing and treating diseases need to be used, and a bactericide is one of the pesticides. Commonly used bactericides can be classified into amides, dihydroxy imides, strobilurins, triazoles, imidazoles, oxazoles, thiazoles, morpholines, pyrroles, pyridines, pyrimidines, quinolines, carbamates, organophosphates, antibiotics and the like according to the chemical structure type. The pyrimidine bactericide is a variety with a large using amount, and mainly comprises ametoctradin, cyprodinil, pyrimethanil, fluomepanipyrim, mepanipyrim and fenarimol.
Ametoctradin belongs to mitochondrial respiration inhibitors, has a control effect on oomycetes fungi, and has extremely strong residual activity and rain resistance.
Cyprodinil (Cyprodinil), chemical name: 4-cyclopropyl-6-methyl-N-phenylpyrimidine-2-amine can inhibit secretion of fungal hydrolase and biosynthesis of methionine, and is mainly used for preventing and treating gray mold, powdery mildew, scab, net blotch, glume blight, wheat eyespot and the like.
Pyrimethanil (Pyrimethanil), chemical name: n- (4, 6-dimethyl pyrimidine-2-yl) aniline has special effect on gray mold.
Diflumetorim (difflueriorm), chemical name: (RS) -5-chloro-N- [1- (4-difluoromethoxyphenyl) propyl ] -6-methylpyrimidin-4-amine has an inhibitory effect on any growth phase of fungi from conidiospore germination to conidiophores formation, and has good activity on powdery mildew and rust disease.
Mepanipyrim (mepanipyrm), chemical name: n- (4-methyl-6-propynyl-pyrimidin-2-yl) -aniline, which can inhibit the secretion of fungal hydrolase and the biosynthesis of methionine. Has no cross resistance with triazoles, imidazoles, morpholines, dicarboximides, phenylpyrroles and the like.
Chloropyrimidinol (Ferarimol), chemical name (RS) -2, 4' -dichloro- α - (pyrimidin-5-yl) phenylbenzyl alcohol, is a broad-spectrum bactericide, has protection, treatment and eradication effects, can inhibit the hypha growth of germs but cannot inhibit the germination of spores, and has high efficiency on powdery mildew, rust disease and apple scab.
However, long-term use of the same variety of bactericide can cause the pesticide resistance of the pathogenic bacteria of the crops to be generated and reduce the control effect. For example, crop pathogens have developed some resistance to pyrimidine fungicides. In order to cope with the drug resistance of pathogenic bacteria, the sterilization active compounds with different action mechanisms are compounded to be a better method.
Therefore, the compounding of the pyrimidine bactericide and other bactericides is a way to solve the drug resistance of germs.
Disclosure of Invention
The invention aims to provide a composition which has the characteristics of good sterilization effect, low medication cost and difficult generation of drug resistance.
The invention provides the following technical scheme:
a composition comprises two active ingredients, wherein the first active ingredient is ZJ10520, and the second active ingredient is selected from pyrimidine bactericides.
The first active ingredient used in the present invention is ZJ10520, whose chemical name is: 3- (difluoromethyl) -5-fluoro-1-methyl-N- [2- (2-chloro-4-trifluoromethyl-phenoxy) phenyl ] pyrazole-4-carboxamide.
The second active ingredient used in the present invention is selected from pyrimidine fungicides. The pyrimidine bactericide is a pyrimidine bactericide commonly used in the industry.
Preferably, the pyrimidine fungicide is selected from at least one of ametoctradin, cyprodinil, pyrimethanil, fluomepanipyrim, mepanipyrim and fenarimol. That is, the pyrimidine fungicide may be one, two or a combination of more than three selected from ametoctradin, cyprodinil, pyrimethanil, fluomepanipyrim, mepanipyrim and fenarimol.
The composition provided by the invention does not need to be specially matched with the two active ingredients.
Preferably, the mass ratio of the first active ingredient to the second active ingredient is 60: 1-1: 60.
More preferably, the mass ratio of the first active ingredient to the second active ingredient is 20: 1-1: 20.
More preferably, the mass ratio of the first active ingredient to the second active ingredient is 6: 1-1: 6.
Most preferably, the mass ratio of the first active ingredient to the second active ingredient is 3: 1-1: 3.
The composition provided by the invention can further comprise a third active ingredient. The third active component can be at least one selected from triazole bactericides, imidazole bactericides, oxazole bactericides, amide bactericides, dicarboximide bactericides, thiazole bactericides, pyrrole bactericides, morpholine bactericides, pyridine bactericides, pyrimidine bactericides, strobilurin bactericides, quinoline bactericides, organophosphorus bactericides, carbamate bactericides and antibiotic bactericides.
The composition provided by the invention is suitable for sterilization, and is particularly suitable for agricultural sterilization.
Preferably, the composition provided by the invention is suitable for preventing and treating at least one selected from powdery mildew, black spot, rust disease, scab, glume blight, rust disease, anthracnose, damping off, gray mold, smut, leaf spot, downy mildew, epidemic disease, leaf blight, brown spot, ring spot, sclerotinia, fusarium wilt, bakanae disease and gibberellic disease.
It is further preferred that the compositions provided by the present invention are used to control at least one selected from the group consisting of cucumber downy mildew, wheat powdery mildew, tomato gray mold, wheat rust, cucumber powdery mildew and apple anthracnose.
The invention also provides a bactericide which comprises more than 0.1% by weight of the composition.
Preferably, the bactericide contains 1 to 90% by weight of the composition.
It is further preferred that the bactericide comprises 5 to 80% by weight of the composition.
The bactericide provided by the invention can further comprise agriculturally acceptable carriers and auxiliaries besides the composition.
The carrier of the present invention may be a solid or a liquid, and any carrier commonly used for formulating agricultural pharmaceutical compositions can be used.
Suitable solid supports include: minerals, plants, synthetic fillers and inorganic salts. Wherein the minerals include silicates, carbonates, sulfates and oxides. Silicates such as kaolin, sepiolite, nacrite, montmorillonite, mica, vermiculite, pyrophyllite, talc. Carbonates such as: calcium carbonate and dolomite. Sulfates such as ammonium sulfate, sodium sulfate, calcium sulfate. Oxides such as quicklime, magnesia lime, diatomaceous earth. Plants such as: citrus pulp, corn cob cores, rice hull powder, rice hulls, soybean straw powder, tobacco powder, walnut shells and sawmilling powder. Synthetic fillers such as precipitated calcium carbonate hydrate, precipitated calcium carbonate, white carbon black. Inorganic salts such as potassium chloride, sodium chloride.
The liquid carrier includes water and an organic solvent. When the active ingredient is a suspoemulsion, the organic solvent plays a role in solubilization and freeze protection. Suitable organic solvents include aromatic hydrocarbons such as benzene, xylene, toluene, alkylbenzenes, alkylnaphthalenes, and chlorinated aromatic hydrocarbons; chlorinated aliphatic hydrocarbons such as vinyl chloride, chloroform, methylene chloride, chloroform, carbon tetrachloride and polychlorinated ethane; aliphatic hydrocarbons such as petroleum fractions, cyclohexane, light mineral oil and paraffin wax. Alcohols such as methanol, ethanol, isopropanol, butanol, isobutanol, ethylene glycol, propylene glycol, glycerol, fatty alcohols, and the like; ethers such as methyl glycol ether, ethyl glycol ether, petroleum ether. Ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, and isophorone, N-methyl-pyrrolidone; the special solvent also comprises dimethylformamide, dimethyl sulfoxide, polyethylene glycol and hexanenitrile; vegetable oils and methylated vegetable oils. The organic solvents mentioned above may be used alone, or in admixture with water.
The auxiliary agent can comprise one or more of a surfactant, an antifoaming agent, a thickening agent, a suspending agent and an antifreezing agent according to needs, and can also comprise other auxiliary agents commonly used in the industry according to needs.
The surfactant can be an emulsifier, dispersant, stabilizer or wetting agent; may be ionic or non-ionic. Suitable surfactants include: sodium and calcium salts of polyacrylic acid and lignosulfonic acid; polycondensation products of fatty acids or fatty amines containing at least 12 carbon atoms in the molecule with ethylene oxide and/or propylene oxide; fatty acid esters of glycerol, dodecanol-1, tetradecanol-1, sorbitol, sucrose, or pentaerythritol; and their polycondensation products with ethylene oxide and/or propylene oxide; sulfates or sulfonates of their polycondensation products; alkali metal or alkaline earth metal salts of sulfuric acid or sulfonic acid having at least 10 carbon atoms in the molecule, preferably sodium salts such as sodium lauryl sulfate, sodium secondary alkyl sulfate, sodium salt of sulfonated castor oil, sodium alkylaryl sulfonate and sodium dodecylbenzene sulfonate; polymers of ethylene oxide, copolymers of ethylene oxide and propylene oxide.
The emulsifier includes nonionic emulsifier and anionic emulsifier. The nonionic emulsifier is preferably nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, styrylphenyl polyoxyethylene ether, alkylphenol formaldehyde resin polyoxyethylene ether, hydroxyl-terminated polyoxyethylene polyoxypropylene ether, styrylphenol formaldehyde resin polyoxyethylene polyoxypropylene ether, and castor oil polyoxyethylene ether. The anionic emulsifier mainly comprises calcium dodecyl benzene sulfonate, ammonium triphenethyl phenol polyoxyethylene ether phosphate, ammonium nonylphenol polyoxyethylene ether phosphate and ammonium castor oil polyoxyethylene ether phosphate.
The dispersant of the invention comprises: one or more of acrylic acid homopolymer sodium salt, maleic acid disodium salt, naphthalene sulfonic acid formaldehyde condensate sodium salt, rosin block polyoxyethylene ether polyoxypropylene ether sulfonate, hydroxyl-terminated polyoxyethylene polyoxypropylene ether block copolymer, triphenyl ethyl phenol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether phosphoric acid and p-hydroxyphenyl lignin sulfonic acid sodium salt.
The humectants of the present invention include: one or more of fatty alcohol-polyoxyethylene ether, naphthalene sulfonate, sodium dodecyl sulfate and alkylphenol resin polyoxyethylene ether sulfate.
The thickening agent comprises one or more of xanthan gum, magnesium aluminum silicate, sodium alginate, sodium carboxymethylcellulose, Arabic gum, gelatin and polyvinyl alcohol.
According to the inventionThe defoaming agent is preferably: molinate, silicones, C8～10Fatty alcohol, C10～20Saturated fatty acids, amides, and the like.
The fungicide according to the present invention can be formulated into any agriculturally acceptable dosage form as required.
Preferably, the bactericide may be formulated into a powdery preparation, a granular preparation, a dispersible powdery preparation, a dispersible granular preparation, a dispersible tablet preparation, a soluble solid preparation, a soluble liquid preparation, an oil preparation, an ultra-low volume preparation, a dispersible liquid preparation, an emulsion preparation, a suspension preparation, a suspoemulsion preparation or a seed coating preparation.
Preferably, the powdered formulation is selected from a powder, a contact powder or a floating powder.
Preferably, the granular formulation is selected from granules, macrogranules, fine granules, microgranules or microencapsulated granules.
Preferably, the dispersible powder formulation is selected from a wettable powder or an oil dispersible powder.
Preferably, the dispersible granular formulation is selected from water dispersible granules, milk granules or effervescent granules.
Preferably, the dispersible tablet formulation is selected from a dispersible tablet or an effervescent tablet.
Preferably, the soluble solid formulation is selected from soluble powders, soluble granules or soluble tablets.
Preferably, the soluble liquid formulation is selected from a solubles, a water aqua, or a sol.
Preferably, the oil formulation is selected from an oil or a spreading oil.
Preferably, the ultra-low volume formulation is selected from an ultra-low volume liquid formulation or an ultra-low volume microcapsule suspension.
Preferably, the dispersible liquid formulation is selected from emulsifiable concentrates or dispersible liquid formulations.
Preferably, the emulsion formulation is selected from an aqueous emulsion, an oil emulsion or a microemulsion.
Preferably, the suspending agent is selected from a suspending agent, a microcapsule suspending agent or an oil suspending agent.
Preferably, the seed coating is selected from an aqueous suspension seed coating, a dispersible powder seed coating or a dispersible granule seed coating.
Compared with the prior art, the composition and the bactericide have the following advantages:
(1) the two active ingredients in the composition are compounded to show excellent synergistic effect, the sterilization effect of the mixed composition is obviously improved compared with that of a single agent, and the composition has good sterilization effect and treatment and protection effects;
(2) the dosage and the cost are reduced;
(3) the two active ingredients are reasonably mixed by different action modes and different action mechanisms, so that the service life of the bactericide is prolonged, the generation of resistance is slowed down, the safety to crops is good, and the safety requirement of pesticide preparations is met.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the invention to these embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.
First, bioassay example
Example 1 indoor toxicity determination of compounding of ZJ10520 and pyrimethanil on tomato gray mold
Test subjects: botrytis cinerea (Botrytis cinerea) provided by the unit cell.
The test method comprises the following steps: refer to the hypha growth rate method of agricultural industry Standard NY/T1156.2-2006 of the people's republic of China. Each medicament is respectively treated by 5 dosages according to the content of effective components, the pathogenic bacteria are cultured by a PDA culture medium, when bacterial colonies grow to a culture dish, a puncher with the diameter of 5mm is used for punching bacterial blocks at the edges of the bacterial colonies, the bacterial blocks are moved to the center of a prepared toxic PDA culture medium by an inoculation needle, and then the bacterial blocks are placed in a 25 ℃ culture box for culture, and the treatment is repeated for 4 times. According to the growth condition of CK colonies, the diameter cm of each treated colony is measured by a caliper by adopting a cross method, and the corrected inhibition percentage is calculated.The EC of each drug was determined by linear regression analysis between the probability of inhibition and the logarithm of the series of concentrations50The co-toxicity coefficient (CTC) was then calculated according to the Sun cloud Peel method.
And (3) calculating the drug effect: two diameters were cross-measured per colony, and the average was used to represent colony size. The colony growth inhibition rate was determined according to the following formula: the colony growth inhibition ratio ═ g (blank colony growth diameter-agent-treated colony growth diameter) × 100/blank colony growth diameter.
The results were subjected to data analysis and statistics using the 3.11 professional edition to determine a regression line, EC50, and a correlation coefficient. EC50 for each treatment was converted to the Actual Toxicity Index (ATI) by the Sun cloud Peel (Y-P Sun); obtaining a Theoretical Toxicity Index (TTI) according to the mixture ratio of the mixture, and calculating the co-toxicity coefficient (CTC) of the mixture according to the following formula.
Theoretical virulence index of the mix (TTI) ═ A virulence index x A content in the mix (%)
+ B virulence index x B content in the mix (%)
If the co-toxicity coefficient is more than 120, the synergistic effect is shown; if the content is obviously lower than 100, antagonism is indicated; between 100 and 120, the additive effect is shown.
Table 1, indoor toxicity test results of compounding ZJ10520 and pyrimethanil on tomato gray mold
| Medicament | EC50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| ZJ10520(A) | 3.29 | 100.00 | / | / |
| Pyrimethanil (B) | 6.21 | 52.98 | / | / |
| A+B(20：1) | 2.53 | 130.04 | 97.76 | 133.02 |
| A+B(15：1) | 2.12 | 155.19 | 97.06 | 159.89 |
| A+B(12：1) | 1.99 | 165.33 | 96.38 | 171.53 |
| A+B(6：1) | 1.73 | 190.17 | 93.28 | 203.87 |
| A+B(3：1) | 1.57 | 209.55 | 88.25 | 237.47 |
| A+B(1：1) | 1.51 | 217.88 | 76.49 | 284.85 |
| A+B(1：3) | 1.67 | 197.01 | 64.74 | 304.33 |
| A+B(1：6) | 1.84 | 178.80 | 59.70 | 299.52 |
| A+B(1：12) | 2.66 | 123.68 | 56.60 | 218.54 |
| A+B(1：15) | 3.34 | 98.50 | 55.92 | 176.15 |
| A+B(1：20) | 4.92 | 66.87 | 55.22 | 121.10 |
Example 2 indoor toxicity determination of ZJ10520 and Chloropyrimidinol combination on apple anthracnose
Test subjects: apple anthracnose (Gleosporium fructigenum Berk) supplied by the Unit cell. Test methods and drug efficacy calculations refer to example 1.
Table 2, results of indoor toxicity determination of ZJ10520 and fenarimol combination on apple anthracnose
Example 3 indoor Activity assay of compounding of ZJ10520 and cyprodinil on wheat powdery mildew
Test subjects: wheat powdery mildew pathogen (Erysiphe graminis) was subcultured in the laboratory for a long period of time.
The test method comprises the following steps: selecting a susceptible variety (Yangmai No. 6) for potting, naturally drying after the seedlings grow to the 2-leaf stage to the 3-leaf stage after spraying treatment, and slightly and uniformly shaking off powdery mildew fresh spores generated on diseased wheat leaves within 24 hours to inoculate the powdery mildew fresh spores on the medicament-treated 2-3-leaf stage potted wheat seedlings. The inoculated test material is transferred to a temperature of 20 ℃ and the relative humidity of about 80 percent to be regulated and controlled in a greenhouse for culture. The soil in the basin is kept moist every day, and the disease condition is graded and investigated according to blank control about 7 days.
The investigation method comprises the following steps:
level 0: no disease;
level 1: the area of the lesion spots accounts for less than 5% of the area of the whole leaf;
and 3, level: the area of the lesion spots accounts for 6 to 15 percent of the area of the whole leaf;
and 5, stage: the area of the lesion spots accounts for 16 to 25 percent of the area of the whole leaf;
and 7, stage: the area of the lesion spots accounts for 26 to 50 percent of the area of the whole leaf;
and 9, stage: the area of the lesion spots accounts for more than 50 percent of the area of the whole leaf.
Disease index (%) Σ (number of disease attacks at each stage × representative value at that stage) × 100/number of seedlings examined × 9 (highest representative value)
Preventing and treating effect (%) of x 100/control disease index
Table 3, results of indoor activity assay of compounding ZJ10520 and cyprodinil on wheat powdery mildew
Example 4 indoor Activity assay of combination of ZJ10520 and mepanipyrim against cucumber powdery mildew
Test subjects: cucumber powdery mildew (Sphaerotheca fuliginea), which is subcultured in the laboratory for a long life.
The test method comprises the following steps: the biological activity of the medicament is determined by a spore suspension spray inoculation method. Culturing cucumber seedlings to 1 true leaf stage, spraying the reagent, and naturally drying. And (3) after 24h, taking cucumber leaves full of powdery mildew, lightly washing with sterile water to obtain fresh spores on the surfaces, filtering with double-layer gauze to prepare suspension with the spore concentration of about 10 ten thousand/ml, and carrying out spray inoculation (the pressure is 0.1 MPa). And (3) naturally drying the inoculated test material, then moving the test material to a thermostatic chamber under light (21-23 ℃) for 7-8 d, and performing grading investigation according to blank control morbidity. Control effect calculation and co-toxicity coefficient calculation reference example 3.
The investigation method comprises the following steps:
level 0: no disease;
level 1: the area of the lesion spots accounts for less than 5% of the area of the whole leaf;
and 3, level: the area of the lesion spots accounts for 6 to 10 percent of the area of the whole leaf;
and 5, stage: the area of the lesion spots accounts for 11 to 20 percent of the area of the whole leaf;
and 7, stage: the area of the lesion spots accounts for 21 to 40 percent of the area of the whole leaf;
and 9, stage: the area of the lesion spots accounts for more than 40 percent of the area of the whole leaf.
Table 4, indoor activity measurement results of compounding ZJ10520 and mepanipyrim on cucumber powdery mildew
| Medicament | EC50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| ZJ10520(A) | 12.27 | 100.00 | / | / |
| Mepanipyrim (B) | 2.96 | 414.53 | / | / |
| A+B(20：1) | 7.77 | 157.92 | 114.98 | 137.34 |
| A+B(15：1) | 6.72 | 182.59 | 119.66 | 152.59 |
| A+B(12：1) | 6.03 | 203.48 | 124.19 | 163.84 |
| A+B(6：1) | 4.98 | 246.39 | 144.93 | 170.00 |
| A+B(3：1) | 3.65 | 336.16 | 178.63 | 188.19 |
| A+B(1：1) | 2.21 | 555.20 | 257.27 | 215.81 |
| A+B(1：3) | 1.89 | 649.21 | 335.90 | 193.28 |
| A+B(1：6) | 1.83 | 670.49 | 369.60 | 181.41 |
| A+B(1：12) | 2.02 | 607.43 | 390.34 | 155.62 |
| A+B(1：15) | 2.03 | 604.43 | 394.87 | 153.07 |
| A+B(1：20) | 2.31 | 531.17 | 399.55 | 132.94 |
Example 5 indoor Activity measurement of combination of ZJ10520 and Fluminostrobin against wheat Rust
Test subjects: wheat leaf rust pathogenic bacteria (Puccinia recondita), the strain is collected from the greenhouse of the unit.
The test method comprises the following steps: the wheat variety is Yangmai, about l0 wheat seedlings are selected in each pot, and after the wheat seedlings grow to the 4-leaf stage for standby, the wheat seedlings are sprayed with the reagent and are naturally dried. And (3) after 24 hours, taking the wheat leaves full of leaf rust germs, lightly washing the wheat leaves with sterile water to obtain fresh spores on the surfaces, filtering the fresh spores by using double-layer gauze to prepare suspension with the concentration of the spores being about 10 ten thousand/ml, and carrying out spray inoculation (the pressure is 0.1 MPa). Inoculating bacteria, culturing at l 5-20 deg.C, examining disease conditions according to field efficacy test criteria classification standard after a week, and calculating control effect according to disease index. Control effect calculation and co-toxicity coefficient calculation reference example 3.
The investigation method comprises the following steps:
level 0: no disease;
level 1: the area of the lesion spots accounts for less than 5% of the area of the whole leaf;
and 3, level: the area of the lesion spots accounts for 6 to 25 percent of the area of the whole leaf;
and 5, stage: the area of the lesion spots accounts for 26 to 50 percent of the area of the whole leaf;
and 7, stage: the area of the lesion spots accounts for 51 to 75 percent of the area of the whole leaf;
and 9, stage: the area of the lesion spots accounts for more than 76% of the area of the whole leaf.
Table 5, indoor activity measurement results of combination of ZJ10520 and diflumetorim on wheat rust
| Medicament | EC50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| ZJ10520(A) | 110.93 | 100.00 | / | / |
| Flurimantadine (B) | 80.53 | 137.75 | / | / |
| A+B(20：1) | 70.35 | 157.68 | 101.80 | 154.90 |
| A+B(15：1) | 66.27 | 167.39 | 102.36 | 163.53 |
| A+B(12：1) | 66.01 | 168.05 | 102.90 | 163.31 |
| A+B(6：1) | 54.68 | 202.87 | 105.39 | 192.49 |
| A+B(3：1) | 43.69 | 253.90 | 109.44 | 232.01 |
| A+B(1：1) | 32.12 | 345.36 | 118.88 | 290.52 |
| A+B(1：3) | 31.89 | 347.85 | 128.31 | 271.10 |
| A+B(1：6) | 35.87 | 309.26 | 132.36 | 233.65 |
| A+B(1：12) | 40.06 | 276.91 | 134.85 | 205.35 |
| A+B(1：15) | 50.33 | 220.41 | 135.39 | 162.79 |
| A+B(1：20) | 59.33 | 186.97 | 135.95 | 137.53 |
Example 6 indoor Activity measurement of combination of ZJ10520 and Amazofamid for cucumber downy mildew
Test subjects: cucumber downy mildew (Pseudoperonospora cubensis) was subcultured from the laboratory for a long period of time.
The test method comprises the following steps: taking fresh cucumber downy mildew diseased leaves, dipping the diseased leaves with a brush pen to wash downy mildew-like substances on the backs of the diseased leaves with sterile water to prepare a Zingiber mioga spore suspension (each milliliter contains 2 multiplied by 105～3×105Individual spore Zingiber mioga ginger) for later use. 1 leaf, 1 heart (removing growing point) and potted cucumber seedlings (Baoyang No. 5) with consistent growth vigor are selected, 2 plants are planted in each pot, and water solution with various concentrations is respectively and uniformly sprayed on the surfaces of the cucumber leaves by a YW5.2-A type micro sprayer (the pressure is 0.1 Mpa). 4 repeats (4 pots of seedlings) are set for each concentration, and the seedlings are naturally dried after being sprayed. After the agent is treated for 24 hours, uniformly spraying the sporangium suspension on cucumber leaves by using an inoculation sprayer (the pressure is 0.1MPa), and transferring the inoculated cucumber seedlings into an artificial climate chamber (the relative humidity is 100%, the temperature is 20 ℃, and the light-dark period is 14 hours/10 hours) for culture. Investigating the disease condition after 5 days, calculating the relative prevention effect according to the disease index,
disease grading standard:
level 0: no disease;
level 1: the area of the lesion spots accounts for less than 5% of the area of the whole leaf;
and 3, level: the area of the lesion spots accounts for 6 to 10 percent of the area of the whole leaf;
and 5, stage: the area of the lesion spots accounts for 11 to 20 percent of the area of the whole leaf;
and 7, stage: the area of the lesion spots accounts for 21 to 40 percent of the area of the whole leaf;
and 9, stage: the area of the lesion spots accounts for more than 40 percent of the area of the whole leaf.
Table 6, results of indoor activity measurement of compounding ZJ10520 and ametoctradin on cucumber downy mildew
| Medicament | EC50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| ZJ10520(A) | 130.55 | 100.00 | / | / |
| Ametoctradin (B) | 18.35 | 711.44 | / | / |
| A+B(20：1) | 70.35 | 185.57 | 129.12 | 143.72 |
| A+B(15：1) | 60.22 | 216.79 | 138.22 | 156.85 |
| A+B(12：1) | 54.33 | 240.29 | 147.03 | 163.43 |
| A+B(6：1) | 36.99 | 352.93 | 187.35 | 188.38 |
| A+B(3：1) | 23.87 | 546.92 | 252.86 | 216.29 |
| A+B(1：1) | 12.88 | 1013.59 | 405.72 | 249.82 |
| A+B(1：3) | 10.58 | 1233.93 | 558.58 | 220.91 |
| A+B(1：6) | 11.77 | 1109.18 | 624.09 | 177.73 |
| A+B(1：12) | 9.99 | 1306.81 | 664.41 | 196.69 |
| A+B(1：15) | 10.55 | 1237.44 | 673.23 | 183.81 |
| A+B(1：20) | 13.05 | 1000.38 | 682.32 | 146.61 |
Example 7, ZJ10520, indoor toxicity determination of ternary compounding of pyrimethanil and pyraclostrobin on strawberry gray mold
Test methods and drug efficacy calculations refer to example 1.
Table 7, ZJ10520, indoor toxicity test results of ternary compounding of pyrimethanil and pyraclostrobin on strawberry gray mold
Second, preparation examples
Example 8, 40% ZJ10520 pyrimethanil suspension
The formula is as follows: 20% of ZJ10520, 20% of pyrimethanil, 4% of acrylic acid homopolymer sodium salt, 1% of fatty alcohol-polyoxyethylene ether, 3% of propylene glycol, 0.3% of silicone oil, 0.2% of potassium sorbate, 0.15% of xanthan gum and water to make up to 100%.
The preparation method comprises the following steps: mixing the effective components, wetting agent, dispersant, antifreezing agent, etc. homogeneously, grinding in sand mill to certain size and filtering. Adding the prepared xanthan gum and stirring uniformly to obtain the suspending agent.
Example 9, 20% ZJ10520 pyrimethanil oil suspension
The formula is as follows: 5% of ZJ10520, 15% of pyrimethanil, 18% of fatty alcohol-polyoxyethylene ether, 2% of acrylic acid homopolymer sodium salt, 1.5% of organic bentonite and methyl oleate which are supplemented to 100%.
The preparation method comprises the following steps: adding the effective components, emulsifier, dispersant, thickener and the like into the oil phase, stirring uniformly, adding into a sand mill, grinding to a certain particle size, and filtering to obtain the suspending agent.
Example 10, 60% ZJ10520 pyrimethanil Water dispersible granules
The formula is as follows: 10% of ZJ10520, 50% of pyrimethanil, 12% of p-hydroxyphenyl lignosulphonate sodium salt, 2% of sodium dodecyl sulfate and light calcium carbonate to be 100%.
The preparation method comprises the following steps: mixing the effective components, dispersant, wetting agent, carrier, etc. homogeneously, adding into airflow crusher, and crushing to certain size. And then adding water, kneading, granulating by a granulator, drying and screening.
Example 11, 70% ZJ10520 pyrimethanil wettable powder.
The formula is as follows: 35% of ZJ10520, 35% of pyrimethanil, 6% of acrylic acid homopolymer sodium salt and 2% of sodium dodecyl sulfate and light calcium carbonate to be 100%.
The preparation method comprises the following steps: mixing the effective components, dispersant, wetting agent, carrier, etc. homogeneously, adding into airflow crusher, and crushing to certain size.
Example 12, 25% ZJ10520 pyrimethanil suspension seed coating.
The formula is as follows: 20% of ZJ10520, 5% of pyrimethanil, 4% of acrylic acid homopolymer sodium salt, 1% of fatty alcohol-polyoxyethylene ether, 3% of propylene glycol, 0.1% of alkaline rose essence, 0.3% of organic silicone oil, 0.2% of potassium sorbate, 1% of polyvinyl acetate, 0.15% of xanthan gum and water to be supplemented to 100%.
The preparation method comprises the following steps: mixing the effective components, wetting agent, dispersant, warning color, antifreezing agent, etc. homogeneously, grinding in sand mill to certain size and filtering. Then adding the prepared xanthan gum and stirring the film forming agent to be uniform to obtain the suspended seed coating agent.
The embodiments show that the composition provided by the invention can well prevent and treat cucumber downy mildew, wheat powdery mildew, tomato gray mold, wheat rust, cucumber powdery mildew and apple anthracnose, the activity and the bactericidal effect of the composition are not simple superposition of the activities of all components, but have obvious synergistic action, and meanwhile, the composition can slow down the generation of resistance, is safe to crops and meets the safety requirement of pesticide preparations.
Claims (11)
1. A composition characterized in that it comprises two active ingredients, the first active ingredient being ZJ10520, chemically named: 3- (difluoromethyl) -5-fluoro-1-methyl-N- [2- (2-chloro-4-trifluoromethyl-phenoxy) phenyl ] pyrazole-4-carboxamide, wherein the second active ingredient is selected from a pyrimidine bactericide, the mass ratio of the first active ingredient to the second active ingredient is 60: 1-1: 60, and the pyrimidine bactericide is selected from at least one of ametoctradin, cyprodinil, pyrimethanil, fluopyram, mepanipyrim and fenarimol.
2. The composition according to claim 1, wherein the mass ratio of the first active ingredient to the second active ingredient is 20: 1-1: 20.
3. The composition according to claim 2, wherein the mass ratio of the first active ingredient to the second active ingredient is 6:1 to 1: 6.
4. The composition according to claim 3, wherein the mass ratio of the first active ingredient to the second active ingredient is 3:1 to 1: 3.
5. A fungicide characterized by containing, by weight, more than 0.1% of the composition according to any one of claims 1 to 4.
6. The fungicide according to claim 5, characterized in that said fungicide contains said composition in an amount of 1% to 90% by weight.
7. The fungicide according to claim 6, characterized in that said fungicide contains 5% to 80% by weight of said composition.
8. The fungicide according to claim 5, characterized in that the fungicide is formulated into a powdery preparation, a granular preparation, a dispersible powdery preparation, a dispersible granular preparation, a dispersible tablet preparation, a soluble solid preparation, a soluble liquid preparation, an oil preparation, an ultra-low volume preparation, a dispersible liquid preparation, an emulsion preparation, a suspension preparation, a suspoemulsion preparation or a seed coating preparation.
9. The bactericide as claimed in claim 8, wherein: the powdery preparation is selected from powder, contact powder or floating powder, the granular preparation is selected from granules, large granules, fine granules, micro granules or micro capsule granules, the dispersible powdery preparation is selected from wettable powder or oil dispersible powder, the dispersible granular preparation is selected from water dispersible granules, emulsion granules or effervescent granules, the dispersible tablet preparation is selected from dispersible tablets or effervescent tablets, the soluble solid preparation is selected from soluble powder, soluble granules or soluble tablets, the soluble liquid preparation is selected from soluble solution, water aqua or soluble gum agent, the oil preparation is selected from oil solution or film-spreading oil solution, the ultra-low volume preparation is selected from ultra-low volume liquid preparation or ultra-low volume micro capsule suspension, the separable liquid preparation is selected from missible oil or dispersible solution, the emulsion preparation is selected from emulsion in water, oil emulsion or microemulsion, the suspension preparation is selected from suspension, oil emulsion in water, or microemulsion, The microcapsule suspension or oil suspension is selected from water suspension seed coating, dispersible powder seed coating or dispersible granule seed coating.
10. Use of a composition according to claim 1 for controlling at least one selected from the group consisting of black spot, scab, glume blight, rust disease, anthracnose, damping off, gray mold, smut, leaf spot, downy mildew, epidemic disease, leaf blight, brown spot, ring spot, sclerotinia, blight, bakanae disease and gibberellic disease.
11. Use of a composition according to claim 10, characterized in that the composition is used for controlling at least one selected from the group consisting of cucumber downy mildew, wheat powdery mildew, tomato gray mold, wheat rust and apple anthracnose.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391925A (en) * | 2010-11-15 | 2013-11-13 | 拜耳知识产权有限责任公司 | 5-halogenopyrazolecarboxamides |
| CN104557709A (en) * | 2013-10-23 | 2015-04-29 | 华中师范大学 | Pyrazole amide compound containing diphenyl ether, and application and pesticide composition of pyrazole amide compound |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391925A (en) * | 2010-11-15 | 2013-11-13 | 拜耳知识产权有限责任公司 | 5-halogenopyrazolecarboxamides |
| CN104557709A (en) * | 2013-10-23 | 2015-04-29 | 华中师范大学 | Pyrazole amide compound containing diphenyl ether, and application and pesticide composition of pyrazole amide compound |
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