Bactericidal composition containing isopyrazam and metrafenone
Technical field
The invention belongs to agriculture plant protection fields, more particularly to a kind of with the bactericidal composition for improving performance, tool
Say to body it is to be related to a kind of bactericidal composition comprising isopyrazam and metrafenone.
Background technique
Isopyrazam (Isopyrazam) is succinate dehydrogenase inhibitors (SDHI), is also pyrazol acid amide sterilization
Agent contains 4 optical isomers.Its activity profile is wide, the lasting period is long, has protection and therapeutic effect, wherein being with protective effect
Main, field trial also shows certain therapeutic activity.It is by inhibiting the complexⅱ breathing in pathogen mitochondrial membrane
Enzyme --- succinate dehydrogenase and work.Isopyrazam is mainly used for fruit tree, vegetables and cereal crops etc..It can effectively prevent small
Wheat leaf spot, leaf rust, stripe rust, net blotch of barley, moire disease etc..It can also be used to prevent and treat the scab and white powder on the operatic circle
Disease, powdery mildew, leaf spot and rust on vegetables, the secret note leaf spot in sclerotiniose and black stem and banana on rape
Deng.
Metrafenone (metrafenone) is a kind of broad spectrum activity systemic fungicide, to a variety of caused by basidiomycetes and sac fungus
Disease has good protection and therapeutic effect, can effectively prevent wheat crops powdery mildew, rust, smut, corn dust-brand
Disease etc..Its mechanism of action is the main biosynthesis for inhibiting ergosterol, can cause the growth of fungal cell wall rupture and mycelia.
Metrafenone is also with the fungicide rooting out, protect, tagging with systemic activity.To many diseases caused by basidiomycetes and sac fungus
With good protection and therapeutic effect, and have certain fumigation action concurrently, but inactive to oomycetes and bacterium.The medicine has preferably
Systemic action, absorbed by the root, stem, leaf of plant, then shifted upwards by vascular bundle.The interior suction ability of root is greater than stem, leaf,
List cannot be made in bast laterally or to base transporting.No matter therefore metrafenone can inhibit the life of fungi in plant in vivo or in vitro
It is long.Metrafenone has eradicant action, 5~10d after application to the sorus of powdery mildew of cereals, and the scab being originally defined can disappear.
Actual pesticide experience have shown that, repeat and single-minded apply a kind of reactive compound to prevent and treat harmful fungoid very
It will lead to the fast selective of fungal bacterial strain in more situations, it is usual at present for the risk for reducing refractory fungal bacterial strain selectivity
Harmful fungoid is prevented and treated using the mixture of different activities compound.By will have the reactive compound of different role mechanism into
Row combination, can delaying drug resistance generate, reduce amount of application, reduce control cost.
Summary of the invention
The purpose of the present invention is being directed to fungicide resistance and pedo relict problem in practical applications, filters out difference and kill
The fungicide of bacterium principle is compounded, and a kind of new microbicide compositions are obtained, to improve bactericidal agent for preventing and treating effect, delaying drug resistance
It generates, reduces amount of application, reduce control cost.
It is a further object to provide prevent and treat comprising two kinds of effective constituents As and B bactericidal composition in agriculture field
The application of corps diseases.
The purpose of the present invention can be achieved by the following measures:
A kind of microbicide compositions with synergistic effect, the composition includes two kinds of active components of A and B, wherein activity
Component A is isopyrazam, and active component B is metrafenone.
Inventor is found by experiment that composition of the invention is prevented for preventing and treating crops bacterium or fungal disease
It is obvious to control synergy, it is often more important that amount of application is reduced, and reduces use cost.Compound structure type containing component A Yu component B
Difference, mechanism of action is different, and the two compounding can expand fungicidal spectrum, and can delay pathogen resistance to a certain extent
Generation and development speed, and no interactions resistance between component A and component B.
The weight ratio between two components in microbicide compositions of the present invention is 1:30~30:1, in a kind of preferred embodiment
In, the weight ratio of active component A and active component B is 1:20~20:1, can be into make function and effect both become apparent from weight ratio
Preferred 1:10~the 10:1 of one step.
In some embodiments, two kinds of active component As and B can be selected 30:1,29:1,28:1,27:1,26:1,
25:1、24:1、23:1、22:1、21:1、20:1、19:1、18:1、17:1、16:1、15:1、14:1、13:1、12:1、11:1、
10:1、9:1、8:1、7:1、6:1、5:1、4:1、3:1、2:1、1:1、1:2、1:3、1:4、1:5、1:6、1:7、1:8、1:9、1:
10、1:11、1:12、1:13、1:14、1:15、1:16、1:17、1:18、1:19、1:20、1:21、1:22、1:23、1:24、1:
25,1:26,1:27,1:28,1:29,1:30 etc. are more specifically matched, and composed model can also be matched at any of the above two
Enclose it is interior selected, proportion of the invention can be understood as the ratio or mass ratio or molar ratio of weight and volume.
In the present invention, isopyrazam and metrafenone can be understood as all kinds of other forms comprising respective compound itself
Structural derivative product or be only simple base group modification, such as all kinds of salt compounds (such as metal salt), ester type compound.
The dosage form allowed on pesticide can be made by active constituent and insecticides adjuvant or auxiliary material in composition of the invention.Into one
Step, agriculture is made by the active component of 4~80% parts by weight and the insecticides adjuvant of 96~20% parts by weight or auxiliary material in the composition
The dosage form allowed on medicine.
The present invention provides the bactericidal compositions comprising component A and component B in terms of agriculture field prevents and treats corps diseases
Purposes, the especially purposes in terms of the fungi or bacteriosis for preventing and treating certain crops.
Above-mentioned composition specifically may include insecticides adjuvant or auxiliary material, such as carrier, solvent, dispersing agent, wetting agent, gluing
One or more of agent, thickener, adhesive, surfactant or fertilizer etc..It can be mixed during application common
Auxiliary agent.
Suitable auxiliary agent or auxiliary material can be solid or liquid, they are usually common substance during formulation,
Such as natural or regenerated minerals, solvent, dispersing agent, wetting agent, adhesive, thickener, adhesive.
The method of administration of the present composition includes the aerial part that composition of the invention is used for plant growth, especially
It is leaf portion or blade face.It can choose seed soaking or be applied to controlling object surface.The frequency and amount of application of application depend on pathogen
Biology and weather life condition.The growth place of plant, such as rice field can be soaked with the liquid preparation of composition, or
Composition is applied in soil by person in solid form, and such as in granular form (soil application), composition can be by soil through planting
Object root enters in plant (systemic action).
Composition of the invention can be prepared into various dosage forms pesticide-acceptable, including but not limited to missible oil, suspension
Agent, wettable powder, water dispersible granules, pulvis, granula, aqua, aqueous emulsion, microemulsion, poison bait, mother liquor, female powder etc., in one kind
In preferred embodiment, dosage form of the invention uses aqua, suspending agent, wettable powder, water dispersible granules or microemulsion.According to these
The property and application composition purpose to be achieved and ambient conditions of composition, can choose composition with by spraying, more
Mist dusts, broadcasts sowing or sprinkles the method application poured or the like.
Composition of the invention can be prepared into various dosage forms by known method, can by effective component with help
Agent can uniformly mix together with surfactant when needing, grind, be prepared into required agent such as solvent, solid carrier
Type.
Above-mentioned solvent can be selected from aromatic hydrocarbon, preferably contain 8-12 carbon atom, such as xylene mixture or substituted benzene, phthalein
Esters of gallic acid, such as two octanoic acid of Dibutyl phthalate or phthalandione, fat hydrocarbon, such as thiacyclohexane or paraffin, the ether of pure and mild ethylene glycol and they
And ester, such as ethyl alcohol, ethylene glycol, ethylene glycol monomethyl;Ketone, such as cyclohexanone, highly polar solvent, such as N- methyl -2- pyrrolidines
Ketone, dimethyl sulfoxide or dimethylformamide and vegetable oil or vegetable oil, such as soybean oil.
Above-mentioned solid carrier, such as usually natural mineral fillers, such as talcum, kaolinite for pulvis and dispersible agent
Soil, montmorillonite or atlapulgite.In order to manage the physical property of composition, polymolecularity silicic acid or polymolecularity can also be added
Adsorpting polymerization object carrier, such as granulated adsorptive carriers or non-adsorbed carrier, suitable granulated adsorptive carriers are porous types, it is such as floating
Stone, bentonite or bentonite;Suitable non-adsorbed carrier such as calcite or sand.Further, it is possible to use a large amount of inorganic in nature or having
The prefabricated material to granulate of machine property is as carrier, especially dolomite.
The chemical property of effective component in composition according to the present invention, suitable surfactant are sulfomethylated lignin
Acid, naphthalene sulfonic acids, phenolsulfonic acid, alkali salt or amine salt, alkylaryl sulfonates, alkyl sulfate, alkylsulfonate, fat
Alcohol sulfate, fatty acid and sulphated fatty alcohol glycol ether, there are also the condensation product of sulfonated naphthalene and naphthalene derivatives and formaldehyde, naphthalene or
The condensation product of naphthalene sulfonic acids and phenol and formaldehyde, NONIN HS 240, ethoxylated isooctyl-phenol, octyl phenol, nonyl phenol,
Alkylaryl polyglycol ether, tributyl benzene polyglycol ether, three stearyl phenyl polyglycol ethers, alkyl aryl polyether alcohol,
Ethoxylated castor oil, polyoxyethylene alkyl ether, ethylene oxide condensation product, ethoxylation polyoxypropylene, laurel acid polyethylene glycol
Ether acetal, sorbitol ester, lignin sulfite waste liquor and methylcellulose.
When preparing liquid dosage form, active component A first can be dissolved in alkaline matter, form isopyrazam metal salt,
Suitable alkaline matter includes: alkali carbonate, alkali metal hydroxide (such as sodium hydroxide, potassium hydroxide), alkali metal alkane
Oxygroup carbonate, alkali metal alcoholates or magnesium methoxide.
Two kinds of effective components show as synergistic effect in composition of the invention, and the activity of the composition is than using individualized
The independent activity of the expected summation of activity and single compound of closing object is more significant.Synergistic effect shows as allowing amount of application
Reduction, broader antifungal control spectrum, quick, more longlasting control efficiency, by a small number of applying only once or several times more
Good control plant pest fungi and broaden the possible administration interval time.These characteristics are plant epiphyte control practices
It especially needs in the process.
In terms of microbicide compositions of the invention can be applied to agriculture field prevention and treatment corps diseases, targeted specific disease
Disease includes but is not limited to rice sheath blight disease, cucumber downy mildew, watermelon blight, downy mildew of garpe, rice green smut, capsicum anthrax
Disease, bitter rot or anthracnose of grape, cucumber anthracnose, celery septoria disease, lotus rhizome damping-off, powdery mildew of strawberry, downy mildew of lettuce, celery grey mold
Disease, downy mildew etc..
The other features of bactericidal composition of the invention shown are mainly shown as: 1, composition mixture of the invention tool
There is apparent synergistic effect;2, since two single dose chemical structures of this composition are widely different, the mechanism of action is entirely different, no
There are cross resistances, can delay two single doses that generated resistance problem is used alone;3, composition of the invention to crop safety,
Preventive effect is good.Tests prove that microbicide compositions chemical property of the present invention is stablized, synergy is significant, shows to controlling object bright
Aobvious synergy and complementation.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention, any modifications, equivalent replacements and improvementsmade within the spirit and principles of the invention, etc. should be included in
Within protection scope of the present invention.
Percentage is weight percentage in all formulas of following embodiment.The processing work of the various preparations of the present composition
Skill is the prior art, can be varied according to different situations.
One, dosage form prepares embodiment
(1) processing and embodiment of wettable powder
Active components A and B activity ingredient and various auxiliary agents and filler etc. are sufficiently mixed in proportion, through ultrafine crusher powder
Obtained wettable powder after broken.
Embodiment 1:52% isopyrazam metrafenone wettable powder
Isopyrazam 2%, metrafenone 50%, pull open powder 5%, neopelex 5%, bentonite 4%, hard charcoal
Black 4%, diatomite complements to 100%.
Embodiment 2:44% isopyrazam metrafenone wettable powder
Isopyrazam 4%, metrafenone 40%, alkyl polyoxyethanyl ether sulfonate 7%, calcium lignosulfonate 6%, hard charcoal
Black 11%, diatomite complements to 100%.
Embodiment 3:12% isopyrazam metrafenone wettable powder
Isopyrazam 10%, metrafenone 2%, sodium alkyl sulfonate 5%, sodium lignin sulfonate 7%, white carbon black 11% are high
Ridge soil complements to 100%.
Embodiment 4:64% isopyrazam metrafenone wettable powder
Isopyrazam 60%, metrafenone 4%, bentonite 5%, alkylsulfonate 4%, bentonite 6%, diatomite complements to
100%.
Embodiment 5:31% isopyrazam metrafenone wettable powder
Isopyrazam 30%, metrafenone 1%, sodium benzoate 4%, alkyl polyoxyethanyl ether sulfonate 7%, diatomite
8%, kaolin complements to 100%.
(2) processing and embodiment of suspending agent
By active constituent activity grouping A and active component B, with each components such as dispersing agent, wetting agent, thickener and water by matching
The ratio of side is uniformly mixed, and after sand milling and/or high speed shear, obtains semi-finished product, and water supplement, which is uniformly mixed to filter, after analysis is
Obtain finished product.
Embodiment 6:31% isopyrazam metrafenone suspending agent
Isopyrazam 1%, metrafenone 30%, white carbon black 4%, ethylene glycol 2%, aliphatic alcohol polyoxyvinethene phosphate
6%, water complements to 100%.
Embodiment 7:32% isopyrazam metrafenone suspending agent
Isopyrazam 2%, metrafenone 30%, glycerine 4%, sodium lignin sulfonate 4%, sodium benzoate 3%, methyl naphthalene
Sodium sulfonate formaldehyde condensation products 4%, water complements to 100%.
Embodiment 8:10% isopyrazam metrafenone suspending agent
Isopyrazam 5%, metrafenone 5%, ethylene glycol 5%, sodium benzoate 8%, bentonite 5%, xanthan gum 3%, water
Complement to 100%.
Embodiment 9:21% isopyrazam metrafenone suspending agent
Isopyrazam 20%, metrafenone 1%, sodium lignin sulfonate 4%, bentonite 4%, glycerine 6%, methyl naphthalene sulphur
Sour sodium formaldehyde condensation product 6%, water complements to 100%.
(3) processing and embodiment of water dispersible granules
By active constituent activity grouping A and active component B, it is mixed according to the formula with auxiliary agent and filler uniformly, through gas
Stream is ground into wettable powder, adds a certain amount of water mixing extrusion granulation, and water dispersible granules are made after dry screening and produce
Product.
Embodiment 10:21% isopyrazam metrafenone water dispersible granules
Isopyrazam 1%, metrafenone 20%, potassium dodecanesulfonate 5%, ammonium sulfate 5%, alkyl naphthalene sulfonic acid potassium 6%,
Precipitated calcium carbonate complements to 100%.
Embodiment 11:30% isopyrazam metrafenone water dispersible granules
Isopyrazam 5%, metrafenone 25%, lauryl sodium sulfate 5%, methyl naphthalene sulfonate formaldehyde condensate 4%,
Sodium lignin sulfonate 6%, diatomite complements to 100%.
Embodiment 12:22% isopyrazam metrafenone water dispersible granules
Isopyrazam 20%, metrafenone 2%, ammonium sulfate 6%, potassium dodecanesulfonate 4%, methyl naphthalene sulfonic acid sodium formaldehyde
Condensation product 5%, precipitated calcium carbonate complements to 100%.
Embodiment 13:52% isopyrazam metrafenone water dispersible granules
Isopyrazam 50%, metrafenone 2%, methyl naphthalene sulfonate formaldehyde condensate 7%, lauryl sodium sulfate 4%,
Ammonium sulfate 5%, diatomite complements to 100%.
Two, drug effect verification test
(1) Assays Example
The incidence that whole strain blade is investigated according to test grade scale, calculates disease index and control efficiency.
Control efficiency is converted into probability value (y), liquor strength (μ g/ml) is converted into logarithm (x), with least square method
Concentration EC50 in calculating virulence equation and inhibiting, the toxicity index and co-toxicity coefficient (CTC) of medicament are calculated according to Sun Yunpei's Method.
Survey toxicity index (ATI)=(standard agent EC50/ reagent agent EC50) * 100
Percentage composition+B medicament toxicity index * the mixture of A in theoretical toxicity index (TTI)=A medicament toxicity index * mixture
The percentage composition of middle B
Co-toxicity coefficient (CTC)=[mixture surveys toxicity index (ATI)/mixtures theoretical toxicity index (TTI)] * 100
CTC≤80, composition show as antagonism, 80 < CTC < 120, and composition shows as summation action, and CTC >=
120, composition shows as synergistic effect.
1, isopyrazam is compounded with metrafenone tests downy mildew of lettuce toxicity test
1. isopyrazam of table is compounded with metrafenone to lettuce downy mildew toxicity test interpretation of result
As a result (table 1) shows that isopyrazam is compounded with metrafenone and significantly improves to the control efficiency of lettuce downy mildew, explanation
The two compounding has significant synergistic effect to the prevention and treatment of lettuce downy mildew.
(2) field efficacy verification test
Test method: it at the initial stage of a disease, carries out for the first time by spraying, carrying out being administered for second after 7 days immediately, each processing 4
A cell, each 20 square meter of cell.11 days investigation statistics incidences, 5 points of each cell are random before medicine and after second of medicine
Sampling, 5 plants of crops of every investigation, the lesion area for investigating every blade in whole strain account for percentage and the classification of blade area, calculate
Disease index and control efficiency.
It is expected that preventive effect (%)=X+Y-XY/100 (wherein, X, Y are single dose preventive effect)
Grade scale:
0 grade: disease-free spot;
1 grade: leaf spot lesion is less than 5, and length is less than 1cm;
3 grades: leaf spot lesion 6-10, part scab length is greater than 1cm;
5 grades: leaf spot lesion 11-25, part scab is linked to be piece, and lesion area accounts for the 10-25% of leaf area;
7 grades: leaf spot lesion 26 or more, scab is linked to be piece, and lesion area accounts for the 26-50% of leaf area;
9 grades: scab is linked to be piece, lesion area account for 50% of leaf area or more or full leaf it is withered.
1, isopyrazam compounds field efficacy experiment with metrafenone
2 isopyrazam of table and metrafenone mixture are to muskmelon anthracnose control efficiency
Measurement result (table 2) shows that isopyrazam is significantly improved with preventive effect of the metrafenone mixture to muskmelon anthracnose, says
Both bright compounding has significant synergistic effect to muskmelon anthracnose.