CN101053328A - Bactericide composition containing dimethomorph - Google Patents
Bactericide composition containing dimethomorph Download PDFInfo
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- CN101053328A CN101053328A CN 200710057465 CN200710057465A CN101053328A CN 101053328 A CN101053328 A CN 101053328A CN 200710057465 CN200710057465 CN 200710057465 CN 200710057465 A CN200710057465 A CN 200710057465A CN 101053328 A CN101053328 A CN 101053328A
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Abstract
The present invention relates to a bactericide composition containing dimethomorph and its preparation and application. The said composition is compounded composed of dimethomorph, cymoxanil and/or dimethormorph, cymoxanil, metalaxyl and/or d dimethormorph, phosethyl-Al and mancozeb. Its characteristic is the weight percentage of said effective components is: dimethormorph 1 to 90 percent; cymoxanil 1 to 90 percent; metalaxyl 1 to 90 percent; phosethyl-Al 1 to 90 percent; mancozeb 1 to 90 percent. The said composition can be prepared into missible oil, wettable powder, soluble powder, water emulsion, micro emulsion, water solution, suspending agent, microcapsule, or water dispersible granule. The said composition can be used for preventing and controlling plant diseases caused by peronospora, false peronospora and phytophthora. Indoor tests have shown that the said composition has obvious synergies, and good activity for postponing insecticide resistance of pathogenic bacteria.
Description
Technical field
The present invention relates to the disinfectant use in agriculture field.The bactericide that is re-dubbed by dimethomorph, white urea cyanogen and/or dimethomorph, white urea cyanogen, metalaxyl and/or dimethomorph, phosethyl-Al, mancozeb specifically.
Technical background
Various crop downy mildew, late blights such as melon, the tomato that is caused by oomycetes such as Peronospora, false Peronospora, Phytophthoras, grape, lichee, potato are to threaten one of severe diseases of agricultural production.At present, widely used control medicament in the production has the mixture preparation of metalaxyl (metalaxyl), phosethyl-Al (fosetyl-aluminium), white urea cyanogen (Cymoxanil), dimethomorph (Dimethomorph), Propamocarb (Propamocarb), Wakil (Oxadixyl) and these medicaments and mancozeb, copper agent etc.But because this class disease has short, characteristics such as spread speed is fast in latent period, therefore when disease was popular, the preventive effect of above-mentioned medicament was still satisfactory inadequately.In addition, because long-term these medicaments that use, pathogen is producing pesticide resistance in varying degrees.Flumorph (Flumorph), Famoxate (Famoxadone), Fluoxastrobin effects such as (Azoxystrobin) are better, but price is more expensive, and the peasant is difficult to bear.
Dimethomorph is developed by Shen Group company, obtains to register and put on market in 1992.Be the outstanding kind of preventing and treating downy mildew of garpe and potato late blight, this medicine has excellent protection and therapeutic action to pathogenic microbial plant disease such as Peronospora, false Peronospora, Phytophthora.Have active high, consumption is low, the lasting period is long, to crop safety, have certain root system absorption and a conduction simultaneously.And there is not cross resistance with phenyl amide series bactericidal agents such as metalaxyls.Therefore in recent years, the production and the application of dimethomorph develop rapidly.But the agent of dimethomorph list uses that not only cost is higher, also has drug-fast risk simultaneously.Commercial dimethomorph and mancozeb mixture preparation, though can reduce drug-fast risk, preventive effect is still not ideal enough.Therefore, how further improving the control efficiency of dimethomorph, reduce its pesticide resistance risk and reduce cost, is the problem that people pay close attention to.
Summary of the invention
The invention discloses a kind of microbicide compositions that contains dimethomorph, and the preparation method of said composition and application.Specifically, dimethomorph and white urea cyanogen and/or dimethomorph and white urea cyanogen and metalaxyl and/or dimethomorph and phosethyl-Al and mancozeb are processed into missible oil, wetting powder, soluble powder, aqueous emulsion, microemulsion, aqua, suspending agent, microcapsule formulations or water dispersion granule according to a certain percentage, spray crops after the dilution certain multiple, can significantly increase the control efficiency of the plant disease that causes by oomycetes such as Peronospora, false Peronospora, Phytophthoras.Has obvious role in synergism.
Known, these several pharmaceutical chemistry structures are different fully, do not have mutual pesticide resistance.In addition, their mechanism of action is also inequality, it is generally acknowledged, dimethomorph is the formation of disturbing the pathogen cell wall, and white urea cyanogen has a plurality of action sites, and now clear and definite is the metabolic process that has suppressed the pathogen uridine at least.The metalaxyl mechanism of action has been commonly considered as suppressing the biosynthesis of pathogen amplifying nucleic acid, mainly is the biosynthesis that suppresses RNA.A little less than the direct bactericidal action of phosethyl-Al, but has the effect of inducing plant disease resistance.Mancozeb has a plurality of application points, suppresses the breathing of pathogen.Three kinds of compound schemes all help to reduce the pesticide resistance risk of dimethomorph.
In addition, the content of dimethomorph is lower in the said composition, can obviously reduce use cost.
Dimethomorph (English common name: Dimethomor) chemical name: (E, Z)-4-[3-(4-chlorphenyl)-3-(3, the 4-Dimethoxyphenyl) acryloyl] morpholine.
Structural formula:
Chinese adopted name: dimethomorph
Molecular formula: C21H22ClNO4
Molecular weight: 387.9
Frost urea cyanogen (english common name: Cymoxanil) chemical name: 1-(2-cyano group-2-methoxyl group imido grpup)-3-ethyl carbamide.
Structural formula:
Chinese adopted name: white urea cyanogen
Molecular formula: C7H10N4O3
Molecular weight: 198.4
Metalaxyl (english common name: metalaxyl) chemical name: N-(2-methoxyl group acetyl group)-N-(2, the 6-xylyl)-D, L-methyl lactamine.
Structural formula:
Chinese adopted name: metalaxyl
Molecular formula: C15H21NO4
Molecular weight: 279.34
Phosethyl-Al (english common name: fosetyl-aluminium) chemical name: three (ethylphosphonic acid) aluminium.
Structural formula:
Chinese adopted name: ethyl phosphine aluminium
Molecular formula: C6H18O9P3A
Molecular weight: 354.11
Mancozeb (english common name: Mancozeb) chemical name: ethylene-1, the co-ordination complex of 2-(aminodithioformic acid) manganese and zinc.
Structural formula:
Chinese adopted name: mancozeb
Molecular formula: C
4H
6MnN
2S
4C
4H
6ZnN
2S
4
Molecular weight: 265.28
The usage amount of compound when the amount that contains active component in the microbicide compositions product of the present invention depends on independent the use, the ratio of a kind of compound and another kind of compound and the degree of synergistic effect, the while is relevant with the target fungi.
Each active principle weight percent content is in the microbicide compositions of the present invention: dimethomorph 1-90%; Frost urea cyanogen 1-90%; Metalaxyl 1-90%; Phosethyl-Al 1-90%; Mancozeb 1-90%.Each active principle preferred weight percentage composition is: dimethomorph 5-15%; Frost urea cyanogen 5-20%; Metalaxyl 2-15%; Phosethyl-Al 5-20%; Mancozeb 10-60%.The active component weight percentage is 5% to 90% in the bactericidal composition.
The present composition can be prepared into missible oil, wetting powder, soluble powder, aqueous emulsion, microemulsion, aqua, suspending agent, microcapsule formulations or water dispersion granule.
Contain at least two kinds of carriers in the present composition, wherein at least a is surfactant.The carrier that is fit to can be solid or liquid, and is to well known to a person skilled in the art material such as mineral matter, organic solvent, solubilizer, surfactant (emulsifier, dispersant, wetting agent), thickener, binder, disintegrant, antifreezing agent natural or regeneration.
Specifically, the organic solvent that is fit to can be, toluene, dimethylbenzene, alkylbenzene, isopropyl alcohol, butanols, ethylene glycol, diethylene glycol (DEG), triethylene glycol, propane diols, glycerine, sorbierite, phenmethylol, cyclohexanol, and acetone, methyl iso-butyl ketone (MIBK), cyclohexanone, dimethyl formamide, pyrrolidones, carrene, chloroform, carbon tetrachloride.Simultaneously, also has vegetable oil.Can use separately, also can two or more mixing use.If use water as thinner, organic solvent also can be used as solubilizer, antifreezing agent.
That the surfactant that is fit to can use nonionic or ionic.For example, lauryl sodium sulfate, Teepol, neopelex, calcium dodecyl benzene sulfonate, polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene fatty amine, or directly use commercially available emulsifier, as the newborn 0201B of farming, agricultural newborn 0203B etc.Material as dispersant and wetting agent has sodium lignin sulfonate, draws back powder, calcium lignosulfonate and lauric acid sodium sulphate, alkylol polyoxyethylene groups ether sodium sulfate, octylphenol polyethylene oxyethylene group ether sulfate, alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, sodium alkyl sulfonate, neopelex, penetrating agent JFC penetrant t, Tween 80.Can use separately, also can two or more mixing use.
Binder that the present invention is fit to or thickener can be carboxymethyl cellulose, methylcellulose, polyvinyl alcohol, silicic acid, aluminium-magnesium silicate, starch derivatives, dextrin, soybean protein, gelatine, sodium sulphate, gypsum, rosin, xanthans, gelatin, gum Arabic, polyvinylpyrrolidone, polyvinyl alcohol, sodium alginate.Can use separately, also can two or more mixing use.
The disintegrant that is fit to can be ammonium sulfate, calcium chloride, magnesium chloride, aluminium chloride, bentonite, urea.Can use separately, also can two or more mixing use.
The solid carrier that is fit to comprises rock dust, quartz, clay, imvite, silica, diatomite, float stone, gypsum, talcum, bentonite, kaolin, potter's clay, white carbon and the synthetic mineral matter that grinds of natural formation, for example microdispersed silicic acid or aluminium oxide.The particulate vector that is fit to comprises pulverizing and natural rock classification, for example calcite, marble, float stone, sepiolite, dolomite and the synthetic particle made by the powder of organic matter and inorganic matter etc.
Above-mentioned substance all is known substances and is to well known to a person skilled in the art material.
The present composition can be used for preventing and treating the plant disease that is caused by oomycetes such as Peronospora, false Peronospora, Phytophthoras, as cucumber downy mildew, tomato late blight, downy mildew of garpe, capsicum epidemic disease etc.Before or after crop is susceptible, use composition of the present invention to the place of crop leaf or fruit and growth thereof.Can use by common method, as spraying, dust and pouring.Amount of application of the present invention changes with weather condition and crop onset state.The duration of cover crop is relevant with the content of individualized compound in the composition, also relevant with the amount of application of composition usually.
The characteristics of the present composition are, the one, and composition is showing fabulous synergistic effect in certain ratio range.The 2nd, because each single thinner architectural difference of this composition is very big, the mechanism of action is different fully, does not have mutual pesticide resistance, can delay dimethomorph and use the pesticide resistance problem that is produced separately.In addition, the content of dimethomorph is lower in this composition, can obviously reduce production costs.
Embodiment
The present invention is described further with following non-limiting embodiment, and the percentage among the embodiment all is weight percentage, and bioactive treatment dosage is active constituent content.
The preparation of missible oil
Embodiment 1:(20% dimethomorph, white urea cyanogen, metalaxyl missible oil)
Dimethomorph 7.5%
Frost urea cyanogen 7.5%
Metalaxyl 5.0%
The newborn 500# 5.0% of farming
Dimethyl formamide 5.0%
Dimethylbenzene complements to 100%.
By the prescription requirement, add solvent, former medicine, emulsifier respectively, mix, heat of solution a little in case of necessity promptly obtains transparence missible oil.
Embodiment 2:(15% dimethomorph, white urea cyanogen cream)
Dimethomorph 5.0%
Frost urea cyanogen 10.0%
Dimethyl formamide 5.0%
The newborn 500# 5.0% of farming
Dimethylbenzene complements to 100%.
By the prescription requirement, add solvent, former medicine, emulsifier respectively, mix, heat of solution a little in case of necessity promptly obtains transparence missible oil.
The wetting powder preparation
Embodiment 3:(50% dimethomorph, phosethyl-Al, mancozeb wettable powder)
Dimethomorph 5.0%
Phosethyl-Al 5.0%
Mancozeb 40.0%
Lauryl sodium sulfate 2.0%
Lignin matter sodium sulfonate 8.0%
White carbon 5.0%
Kaolin is supplemented to 100%.
By the prescription requirement, former medicine, various auxiliary agent and filler etc. are fully mixed, pulverize through airslide disintegrating mill, reach standard value (below the 5 μ m) up to grain fineness.
The aqueous emulsion preparation
Embodiment 4:(15% dimethomorph, white urea cyanogen, metalaxyl aqueous emulsion)
Dimethomorph 5.0%
Frost urea cyanogen 5.0%
Metalaxyl 5.0%
Dimethyl formamide 10.0%
Polyoxyethylene nonylphenol ether 8.0%
The newborn 0203B 13.0% of farming
Xanthans 0.3%
Ethylene glycol 4.0%
Water complements to 100%.
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase, water, antifreeze etc. is mixed, become the homogeneous water.Under high-speed stirred, water is joined oil phase or oil phase is joined water, form the aqueous emulsion of favorable dispersibility.
The preparation of water dispersion granule
Embodiment 5:(40% dimethomorph, white urea cyanogen water dispersion granule)
Dimethomorph 10.0%
Frost urea cyanogen 30.0%
Ethoxylated dodecyl alcohol sodium sulphate 4.0%
Rope uncle SOPA 3.0%
Sodium lignin sulfonate 5.0%
Carboxymethyl cellulose 4.0%
Aluminium chloride 3.0%
Kaolin complements to 100%.
Former medicine and powder carrier, wetting agent, spreader-sticker, binding agent and disintegrant etc. are mixed in proportion; pulverize through airslide disintegrating mill; add a certain amount of moisture content again and mediate, granulation in comminutor, drying, screening (pressing the screen cloth scope) promptly get granular product again.
The preparation of suspending agent
Embodiment 6:(25% dimethomorph, white urea cyanogen, Metalaxyl suspending agent)
Dimethomorph 5.0%
Frost urea cyanogen 12.5%
Metalaxyl 7.5%
Lauryl sodium sulfate 5.0%
The newborn 0201B 5.0% of farming
Soluble starch 0.5%
Ethylene glycol 10.0%
Water complements to 100%.
By the prescription requirement, be medium with water, former medicine, dispersant, suspending agent and antifreezing agent etc. are added in the sand milling still, carry out porphyrize, make suspending agent.
Biologically active embodiment
Embodiment 7: dimethomorph, white urea cyanogen, metalaxyl are to the synergistic effect of potato late blight---and biological activity test exsomatizes.
Adopt biomass growth rate method (mycelium growth rate test). measure the co-toxicity of dimethomorph, white urea cyanogen, metalaxyl and embodiment 1 (20% dimethomorph, white urea cyanogen, metalaxyl missible oil) Phytophthora infestans.Reagent agent is diluted to design concentration, gets in 1 milliliter of injection culture dish, add 9 milliliters of PSA medium again, making ultimate density after shaking up is the pastille flat board of 5.0,2.5,1.25,0.625,0.3125 (μ gml-1).Make blank to add 1 milliliter of aqua sterilisa.Get the bacterium dish with 4 millimeters card punch of diameter along beating for examination flora outer rim, place in the pastille flat board, 24 ± 1 ℃ of dark culturing 72 hours, bacterium dish expansion diameter is respectively handled in metering, calculate thalli growth and suppress percentage, calculate medicament 50% effective concentration (EC50) by concentration logarithm-inhibiting rate probability value method, further adopt the abundant method of Sun Yun to calculate co-toxicity coefficient.The result shows embodiment 1 co-toxicity coefficient obviously greater than 100, represents that this mixture has synergistic effect.Result of the test sees Table 1.
Table 1 dimethomorph, white urea cyanogen, metalaxyl and mixture Phytophthora infestans thereof
The joint toxicity measuring result of (Phythophtora infestens)
| Reagent agent | Virulence regression equation | 50% effective concentration (EC50) (μ gml-1) | Co-toxicity coefficient |
| The former medicine embodiment 1 of the former medicine frost former medicine metalaxyl of urea cyanogen of dimethomorph | Y＝4.4191+0.7397X Y＝3.8807+0.9626X Y＝3.8027+0.5534X Y＝4.0183+1.0234X | 0.61 1.45 14.6 0.91 | - 123.2 |
Embodiment 8: dimethomorph, white urea cyanogen are tested the synergistic effect-greenhouse pot culture of cucumber downy mildew
Trial crops is the close thorn cucumber variety in Tianjin.Seedling being cultured to 3 true leaves in the greenhouse, fully to launch the phase standby.The former medicine of dimethomorph, the former medicine of white urea cyanogen and embodiment 2 (15% dimethomorph, white urea cyanogen cream) are mixed with 50.0,25.0,12.5,6.25,3.125 (μ gml-1) concentration liquid respectively, to the cucumber leaves processing of spraying, chemicals treatment is inoculated the cucumber downy mildew germ after 24 hours.Then seedling is moved to culturing room's cultivation of under 22 ± 1 ℃, preserving moisture, after fully falling ill, the blank of not dispenser carries out result's investigation, carry out the disease classification by " pesticide field efficacy medicine test criterion " standard that The Institute for the Control of Agrochemicals of the Ministry of Agriculture,PRC writes, calculate control efficiency.Obtain this medicament virulence regression equation by concentration logarithm-preventive effect probit value method, calculate 50% effective concentration (EC50).Further adopt the abundant method of Sun Yun to calculate the co-toxicity coefficient of mixture.The result shows that embodiment 2 co-toxicity coefficients represent that obviously greater than 100 this mixture has synergistic effect.Result of the test sees Table 2.
Table 2 dimethomorph, white urea cyanogen and mixture thereof are to cucumber downy mildew
(Pseudoperonospora.cubensis) joint toxicity measuring result
| Reagent agent | Virulence regression equation | 50% effective concentration (EC50) (μ gml-1) | Co-toxicity coefficient |
| The former medicine embodiment 2 of the former medicine frost urea cyanogen of dimethomorph | Y＝206257+20007X Y＝2.9639+1.6271X Y＝2.5743+2.0760X | 15.37 17.84 14.74 | - 116.0 |
Embodiment 9 dimethomorphs, phosethyl-Al, mancozeb are to the control efficiency-field trial of downy mildew of garpe
Reagent agent is embodiment 3 (50% dimethomorph, phosethyl-Al, mancozeb wettable powder), 50% dimethomorph wetting powder, 40% phosethyl-Al wetting powder, 50% mancozeb wettable powder.Kind is huge rich grape, carries out reagent spray in field downy mildew of garpe their early stage and handles, and experimental concentration is 750,500,250 μ g.ml-1, dispenser 4 times, 7 days intervals, 10 days investigation prevention effects after the 4th dispenser, result of the test such as table 3.
Table 3 dimethomorph, phosethyl-Al, mancozeb and mixture thereof are to the control efficiency of downy mildew of garpe
| Reagent agent | Experimental concentration (μ gml-1) | ||
| 250 | 500 | 750 | |
| Embodiment 3 50% dimethomorph wetting powders 40% phosethyl-Al wettable powder 50% mancozeb wettable powder | 97.8 97.4 96.5 78.6 | 88.6 89.7 86.4 57.3 | 78.8 79.0 78.5 35.2 |
Claims (7)
1, a kind of microbicide compositions that contains dimethomorph is characterized in that: contain in the prescription active ingredient dimethomorph and and other bactericide such as white urea cyanogen, metalaxyl, carry out binary or ternary built, or carry out ternary built with phosethyl-Al and mancozeb.
2, microbicide compositions according to claim 1 is characterized in that: contain dimethomorph, white urea cyanogen and metalaxyl in the prescription, each active principle weight percentage is as follows:
Dimethomorph: 1-90%
Frost urea cyanogen: 1-90%
Metalaxyl: 1-90%.
3, microbicide compositions according to claim 1 is characterized in that: contain dimethomorph, white urea cyanogen in the prescription, each active principle weight percentage is as follows:
Dimethomorph: 1-90%
Frost urea cyanogen: 1-90%.
4, microbicide compositions according to claim 1 is characterized in that: contain dimethomorph, phosethyl-Al, mancozeb in the prescription, each active principle weight percentage is as follows:
Dimethomorph: 1-90%
Phosethyl-Al: 1-90%
Mancozeb: 1-90%.
5, according to the described microbicide compositions of claim 1～4, it is characterized in that: total active ingredient weight percentage is 5% to 90% in the composition.
6, according to the described microbicide compositions of claim 1～4, it is characterized in that: said composition can be mixed with missible oil, wetting powder, soluble powder, aqueous emulsion, microemulsion, aqua, suspending agent, microcapsule formulations or water dispersion granule.
7, according to the described microbicide compositions of claim 1～4, it is characterized in that: be used to prevent and treat the plant disease that causes by Peronospora, false Peronospora, Phytophthora.
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| CN101720771B (en) * | 2008-10-14 | 2013-09-18 | 江苏耕耘化学有限公司 | Wettable powder compounded by pyrimorph and mancozeb and preparation method thereof |
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