CN101953352B - Antifungal composition containing pyraclostrobin and pyrimidine compounds - Google Patents
Antifungal composition containing pyraclostrobin and pyrimidine compounds Download PDFInfo
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Abstract
The invention discloses an antifungal composition containing an active component (A) and an active component (B). The active component (A) is selected from pyraclostrobin, and the active component (B) is selected from cyprodinil (B1), pyrimethanil (B2), ferimzone (B3), ethirimol (B4), mepanipyrim (B5), dimethirimol (B6), bupirimate (B7), difulmetorim (B8) or fluoro pyrimidine alcohol (B10) or salts thereof, the ratio of the active component (A) to the active component (B) is 1:100 to 100:1, and the weight content of the active components in the composition is 0.1-95 percent. The antifungal composition of the invention is particularly suitable for preventing the harm of various plant pathogenic fungi, such as botrytis cinerea, powdery mildew, apple scab, and the like.
Description
Technical field
The invention belongs to the disinfectant use in agriculture field, be specifically related to a kind of Fungicidal composition that contains azoles amine bacterium ester and pyrimidines, being specifically related to a kind of azoles amine bacterium ester and pyrimidines or its salt is the Fungicidal composition of active component.
Background technology
Chinese invention patent CN1869034A discloses the methoxy acrylic bactericide shown in general formula (I) first:
In the formula:
X
1Be selected from O, S or NR
2
R
1Be selected from hydrogen, halogen atom, nitro, cyano group, CONH
2, CH
2CONH
2, CH
2CN, C
1-C
12Alkyl, halo C
1-C
12Alkyl, C
1-C
12Alkoxyl, halo C
1-C
12Alkoxyl, C
1-C
12Alkylthio group, C
1-C
12Alkane sulfonyl, C
1-C
12Alkyl-carbonyl, C
1-C
12Alkoxy C
1-C
12Alkyl, C
1-C
12Alkoxy carbonyl, C
1-C
12Alkoxy carbonyl C
1-C
12Alkyl, C
1-C
12Halogenated alkoxy C
1-C
12Alkyl, replacement or unsubstituted amido C
1-C
12Alkyl;
R
2Be selected from hydrogen, C
1-C
12Alkyl, halo C
1-C
12Alkyl, C
1-C
12Alkoxy carbonyl or C
1-C
12Alkoxy carbonyl C
1-C
12Alkyl;
Ar is selected from and replaces or unsubstituted phenyl, pyridine radicals, furans, thiophene or thiazole.Substituting group is selected from 1-3 halogen atom, CN, nitro, C
1-C
6Alkyl, C
1-C
6Alkoxyl, C
1-C
6Alkylthio group, C
1-C
6Halogenated alkoxy, phenyl, halogenophenyl, phenoxy group or halogenated phenoxy.
General formula (I) compound is a kind of high-effective broad-spectrum fungicide; plurality of plant diseases on the crops such as cereal, fruit tree, vegetables all had protection and therapeutic activity; and have unique systemic activity, especially the fungal diseases such as gray mold (crops such as tomato, cucumber, capsicum), powdery mildew (wheat class, melon, fruit tree etc.), scab (apple, pears etc.) are had good control efficiency.But this series bactericidal agent action site is single, and germ produces adaptive variation to medicament easily, and the preventive effect of medicament is reduced.Therefore, the compound by will having the different mechanisms of action and its combination, reduce the resistance fungal bacterial strain optionally dangerous, prolong the service life of active component, be current urgent problem.
Summary of the invention
The object of the present invention is to provide that a kind of to contain the methoxy acrylic bactericide shown in the general formula (I) be the Fungicidal composition of one of active component, to reach the control efficiency that significantly improves corps diseases, enlarge fungicidal spectrum, to delay the purpose that the pathogen pesticide resistance occurs.The present invention as the A component, with pyrimidines (as the B component) use that is mixed, has obtained desirable effect with general formula (I) compound.
Technical scheme of the present invention is as follows:
A kind of Fungicidal composition, its following compound that comprises Synergistic are as active component:
Component A is selected from the methoxy acrylic bactericide shown in the disclosed general formula (I) among the CN1869034A
B component is selected from a kind of pyrimidines as described below:
B component is selected from cyprodinil B1 (cyprodinil), phonetic mould amine B2 (pyrimethanil), ferimzone B3 (ferimzone), the phonetic phenol B4 of second (ethirimol), mepanipyrim B5 (mepanipyrim), dimethirimol B6 (dimethirimol), bupirimate B7 (bupirimate), fluorine mepanipyrim B8 (diflumetorim), Fenarimol B9 (fenarimol) or nuarimol B10 (nuarimol); Or its salt;
Weight ratio between component A and B component two components is 1: 100-100: 1; The weight content of active component is 0.1～95% in the composition.
Comparatively preferred technical scheme is in the Fungicidal composition of the present invention:
Component A is selected from azoles amine bacterium ester;
B component is selected from cyprodinil B1, phonetic mould amine B2, ferimzone B3, the phonetic phenol B4 of second, mepanipyrim B5, dimethirimol B6, bupirimate B7, fluorine mepanipyrim B8, Fenarimol B9 or nuarimol B10; Or its salt;
Weight ratio between component A and B component two components is 1: 50-50: 1.
Azoles amine bacterium ester (english common name: pyrametostrobin) be the representation compound of the methoxy acrylic bactericide shown in the general formula (I) as the A component, chemical name is 2-((1,4-dimethyl-3-phenyl-1H-pyrazoles-5-base oxygen base) methyl) phenyl (methoxyl group) methyl carbamate), structural formula is as follows:
Further preferred technical scheme is:
Component A is selected from azoles amine bacterium ester;
B component is selected from cyprodinil B1, phonetic mould amine B2, ferimzone B3, the phonetic phenol B4 of second, mepanipyrim B5, dimethirimol B6, bupirimate B7, fluorine mepanipyrim B8, Fenarimol B9 or nuarimol B10;
Weight ratio between component A and B component two components is 1: 30-30: 1.
Further preferred technical scheme is again:
Component A is selected from azoles amine bacterium ester;
B component is selected from cyprodinil B1, phonetic mould amine B2, ferimzone B3, the phonetic phenol B4 of second, mepanipyrim B5, dimethirimol B6, bupirimate B7, fluorine mepanipyrim B8, Fenarimol B9 or nuarimol B10;
Weight ratio between component A and B component two components is 1: 16-16: 1.
Have now found that, the disease that Fungicidal composition of the present invention causes the Various Diseases fungal pathogens, especially to Cereal (barley, wheat, oat, rye, corn, dogstail etc.), ash arrhizus bacteria in vegetables (such as cucumber, beans, tomato, peanut etc.), fruits (apple, strawberry etc.), ornamental plants and the grape vine, Powdery Mildew, black star germ etc. have good control efficiency, therefore, technical scheme of the present invention comprises that also said composition is used as the purposes of fungicide.
Fungicidal composition of the present invention is particularly suitable for preventing and treating following plants pathogenic epiphyte disease: graw mold of tomato, gray mold of cucumber, Botrytis cinerea, wheat powdery mildew, powdery mildew of cucumber, apple scab, pear scab, apple mildew etc.
When preparation Fungicidal composition of the present invention, pure active component A and the B component of preferred use, can be to wherein adding other to harmful pathogen or the effective active substance of other insect, or have reactive compound or the fertilizer of herbicide effect and growth regulating effect.
The invention still further relates to the using method of this antifungal group.Component A and at least a B component prepare in advance according to appropriate proportioning provided by the invention or use on-the-spot preparation (namely using simultaneously) or separately successively occupation mode all present and prevent and treat significantly that the disease scope increases and the preventive effect of some disease is improved, comprise the plurality of plant diseases that oomycetes, sac fungi, basidiomycetes, imperfect fungus etc. are caused.In addition, the systemic activity of the uniqueness that component A azoles amine bacterium ester has, so the part present composition also can be used as blade face and soil bactericide.
Here the working concentration of component A is 1-1000g/hm
2, preferred 20-500g/hm
2Accordingly, the working concentration of B component is 1-1000g/hm
2, preferred 20～500g/hm
2
According to the occurrence degree of corps diseases, the working concentration of mixture of the present invention is 5-1500g/hm in the proportion of crop planting zone
2, preferred 20-500g/hm
2
In the process of control fungal diseases of plants, can be chosen in before or after the plant seeding period of using of composition, or before or after plant emerges, and seed, plant or soil are sprayed or the mode such as loose powder.
Use the present composition (or its suitable preparaton) the control harmful fungoid that is fit to dosage, impose on the harmful fungoid habitat and maybe will prevent and treat plant corpus, seed, soil, zone, material or the space that they infect.Using of composition can be carried out before or after harmful fungoid infects, emphasis should be before infecting or the initial stage of infecting use.
But antifungal cooperative compositions of the present invention can be formulated as Direct spraying solution, powder, suspension, highly concentrated water-based, oiliness or other suspension, dispersion, emulsion, oil dispersion, paste, pulvis, broadcast sowing with composition or particle, and can be by spraying, atomizing, dusting, broadcast sowing or the mode such as topple over and use.Administration form depends on specific purpose; In all cases, should guarantee the meticulous and even distribution of the present composition.
Above-mentioned various preparation all can be prepared in a known manner.For example prepare by active component is mixed with solvent and/or carrier, can add auxiliary agent and the surfactants such as emulsifier and dispersant if need.Suitable solvent/auxiliary agent is mainly: water; Benzene, dimethylbenzene, toluene, alkylbenzene, Fluhyzon and chlorinated aromatic hydrocarbons; Chloro aliphatic hydrocarbon, for example chlorobenzene, vinyl chloride, trichloroethanes, carrene, chloroform, carbon tetrachloride and many chloroethanes; Aliphatic hydrocarbon, for example petroleum distillate, cyclohexane, light mineral oil, paraffin and coal.Yet, particularly suitable be polar solvent, i.e. alcohols, for example isopropyl alcohol, butanols, ethylene glycol, propane diols, glycerine, sorbierite, phenmethylol, furfuryl alcohol and cyclohexanol, and their ether and ester; Ketone, for example acetone, MEK, methyl iso-butyl ketone (MIBK), cyclohexanone, butyrolactone, and dimethyl formamide, dimethyl sulfoxide (DMSO) and N-methyl-pyrrolidones; Also have vegetable oil and the molten fiber of methyl.Simultaneously, the mixture of different liquids also is suitable for.
Suitable surfactant is lignosulphonic acid, naphthalene sulfonic acids, phenolsulfonic acid, the alkali metal salt of dibutyl naphthalene sulfonic acids, alkali salt and ammonium salt, alkylaryl sulfonates, alkyl sulfate, alkylsulfonate, aliphatic alcohol sulfate, fatty acid and sulphated fatty alcohol glycol ether, the condensation product that also has sulfonated naphthalene and naphthalene derivatives and formaldehyde, the condensation product of naphthalene or naphthalene sulfonic acids and phenol and formaldehyde, NONIN HS 240, the ethoxylation isooctylphenol, octyl phenol, nonyl phenol, alkyl phenyl polyglycol ether, tributyl phenyl polyglycol ether, three stearyl phenyl polyglycol ethers, alkyl aryl polyether alcohol, alcohol/pure and mild fatty alcohol/ethylene oxide condensation product, ethoxylated castor oil, polyoxyethylene alkyl ether, ethoxylation polyoxypropylene, laruyl alcohol polyglycol ether acetal, sorbitol ester, lignin sulfite waste liquor and methylcellulose.
But the material that is suitable for preparing Direct spraying solution, emulsion, paste or oil dispersion be in to high boiling mineral oil fractions such as kerosene or diesel oil, the oil that also has coal tar and plant or animal origin, aliphatic series, ring-type and aromatic hydrocarbon such as toluene, dimethylbenzene, paraffin, tetrahydronaphthalene, alkylated naphthalene or derivatives thereof, methyl alcohol, ethanol, propyl alcohol, butanols, cyclohexanol, cyclohexanone, isophorone, intensive polar solvent such as methyl-sulfoxide, 1-METHYLPYRROLIDONE or water.
Powder, broadcast sowing with composition and pulvis and can prepare by active substance is mixed or grinds with solid carrier.
Particle (such as coating particle, impregnated granules and homogeneous particle) can prepare by active component and solid carrier are adhered to.The synthetic material that solid carrier is ore deposit soil, silicate, talcum, kaolin, activated clay, lime stone, lime, chalk, bole, loess, clay, dolomite, diatomite, calcium sulphate, magnesia, grind; Fertilizer such as ammonium sulfate, ammonium phosphate, ammonium nitrate, urea; The product of plant origin such as flour, bark powder, wood powder and shuck powder, cellulose powder and other solid carrier.
Usually the active component that contains 0.1～95% (weight) in the present composition preferably contains the active component of 0.1～80% (weight).
The preparation example of part preparaton is as follows, and wherein said active component is azoles amine bacterium ester and the pyrimidines in the Fungicidal composition of the present invention:
1. the product of dilute with water
(A) soluble liquid (SL)
With 10 parts of (weight ratio, lower with) active components in the water-soluble or water soluble preparation.Perhaps, add wetting agent or other auxiliary agent.Active component is through water dilution dissolving.
(B) dispersible agent (DC)
Be dissolved in 20 parts of active components in the cyclohexanone and add dispersant such as PEF base pyrrolidones.Dilute with water obtains dispersion.
(C) missible oil (EC)
Be dissolved in 15 parts of active components in the dimethylbenzene and add calcium dodecyl benzene sulfonate and castor oil ethoxylate, dilute with water obtains emulsion.
(D) aqueous emulsion (EW)
Be dissolved in 10 parts of active components in the dimethylbenzene and add calcium dodecyl benzene sulfonate and castor oil ethoxylate.Introduce said composition in the water and make equal phase emulsion by emulsifier.Dilute with water obtains emulsion.
(E) suspending agent (SC)
In the ball mill that stirs, 20 parts of active components are pulverized and adding dispersant, wetting agent and water or organic solvent, obtain active component suspension in small, broken bits.Dilute with water obtains stable active component suspension.
(F) water dispersible granules (WG)
With 50 parts of active component grindings in small, broken bits and adding dispersant and wetting agent, be made into water dispersible or water-soluble granular by commercial plant (such as extruder, spray tower, fluid bed).Dilute with water obtains stable active component dispersion or solution.
(G) wetting powder (WP)
With 75 parts of active components in the rotor-stator grinding machine for grinding and add dispersant, wetting agent and silica gel.Dilute with water obtains stable active component dispersion or solution.
2. be spendable product without dilution
(H) pulvis (DP)
Fully be mixed to get pulvis with 5 parts of active component grindings in small, broken bits and with 95% kaolin in small, broken bits.
(I) granule (GR)
With 0.5 part of active component grinding in small, broken bits and in conjunction with 99.5% carrier, current methods be extrude, atomized drying or fluid bed, obtaining without dilution is spendable particle.
(J) ultra-low-volume formulation (ULV)
10 parts of active compounds are dissolved in organic solvent such as the dimethylbenzene, and obtaining without dilution is spendable product.
Active component can be directly, with its preparaton form or type of service prepared therefrom (but such as Direct spraying solution, powder, suspension or dispersion, emulsion, oil dispersion, paste, pulvis, broadcast sowing with composition or particle), by spraying, atomizing, dusting, broadcast sowing or pour into a mould and use.Type of service depends on the purpose that will reach fully, guarantees that in all cases the best of active compound of the present invention may distribute.
Moisture type of service can be prepared by emulsion concentrates, paste or wettable powder (sprayable powder, oil dispersion) by adding entry.Be preparation emulsion, paste or oil dispersion, can by wetting agent, tackifier, dispersant or emulsifier with this material directly or after being dissolved in oil or the solvent in water homogenizing.Perhaps, can prepare the concentrate that is suitable for dilute with water and is formed by active substance, wetting agent, tackifier, dispersant or emulsifier, solvent or oil.
Namely can in relative broad range, change with the active component concentration in the preparation, be generally 0.001-20%, preferred 0.01%-10%.
Active compound also can successfully be used for ultra low volume method (ULV), wherein can use to comprise the preparaton that surpasses 95% (weight ratio) active compound, or even use the active compound that does not contain additive.
Various types of oil, wetting agent, adjuvant, weed killer herbicide, fungicide, other agricultural chemicals or bactericide all can add in the present composition; If suitable, just before using, the next-door neighbour adds (bucket mixes).These reagent mix with 1: 30～30: 1 weight ratio with the present composition usually.
Fungicidal composition of the present invention has the following advantages: have synergistic function, improve the control efficiency of corps diseases; Simultaneously can enlarge fungicidal spectrum, delay the pathogen pesticide resistance and occur.
Embodiment
The present composition can illustrate by following example the synergistic function of harmful fungoid, but the present invention only limits to absolutely not these embodiment.
Method of testing:
Take by weighing an amount of reactive compound acetone solution, water is mixed with each compound the solution (content of acetone is not more than 10% in the solution) of described concentration.The emulsifier Tween 80 of 0.1% (volume) is added in this solution, by described proportioning each reactive compound equal proportion is mixed, obtain described proportioning and concentration.
Infect percentage evaluation by measuring leaf area.These percentages are changed into effectiveness.Use the Abbot formula to calculate and render a service (W), namely obtain the effectiveness of observing:
W＝(1-α/β)×100
In the formula:
α: the fungal infection percentage of processing plant;
β: the fungal infection percentage of (blank) plant of being untreated;
Render a service as " 0 " and represent that the level that infects of processing plant is identical with the level that infects of untreated control plant; Render a service as " 100 " represent to process plant and infected.
The expection of composition render a service use the Colby formula (see R.S.Colby, weeds (Weeds), 1967,15,20-22) determine and with the effectiveness of observing relatively:
E＝x+y-xy/100
In the formula:
E: (effectiveness of the calculating in following each table) is renderd a service in the expection when working concentration is the composition of the active component A of a and b and B, represents with the % of untreated control;
X: the effectiveness when working concentration is the active component A of a represents with the % of untreated control;
Y: the effectiveness when working concentration is the active component B of b represents with the % of untreated control.
Application Example 1 control graw mold of tomato (Botrytis cinerea) test, conservation treatment.
Cultivar is sprayed to the drip point for the potted tomato seedling leaf of " L-402 " with activity compound concentration aqueous suspension as described below.After 24 hours, be inoculated in test plants with the spore aqueous suspension of ash arrhizus bacteria.Place 22～24 ℃ to be that 75% climatic chamber is regulated 7 days with relative atmospheric humidity test plants.Then naked eyes are measured the development degree of infection process on the leaf.The activity data of the active component that each is independent and present composition control graw mold of tomato the results are shown in Table 1 and table 2.
Table 1 is the activity of active component separately
The activity of table 2 present composition
| Tested number | Active compound/concentration (mg/L)/proportioning | The effectiveness of observing (%) | The effectiveness (%) of calculating * |
| 7 | A+B2 8+0.5 16∶1 | 54.29 | 32.56 |
| 8 | A+B2 2+0.5 4∶1 | 31.43 | 16.49 |
| 9 | A+B2 0.5+0.5 1∶1 | 29.80 | 12.59 |
| 10 | A+B2 0.125+0.5 1∶4 | 20.00 | 8.41 |
| 11 | A+B2 0.031+0.5 1∶16 | 17.14 | 5.71 |
| 12 | A+B1 8+0.5 16∶1 | 51.43 | 34.69 |
| 13 | A+B1 2+0.5 | 37.14 | 19.02 |
| 4∶1 | |||
| 14 | A+B1 0.5+0.5 1∶1 | 28.57 | 15.24 |
| 15 | A+B1 0.125+0.5 1∶4 | 25.71 | 11.18 |
| 16 | A+B1 0.031+0.5 1∶16 | 17.14 | 8.57 |
| 17 | A+B3 8+0.5 16∶1 | 45.71 | 30.61 |
| 18 | A+B3 2+0.5 4∶1 | 34.29 | 13.96 |
| 19 | A+B3 0.5+0.5 1∶1 | 26.53 | 9.95 |
| 20 | A+B3 0.125+0.5 1∶4 | 14.29 | 5.64 |
| 21 | A+B3 0.031+0.5 1∶16 | 11.43 | 2.86 |
| 22 | A+B5 8+0.5 16∶1 | 51.43 | 32.56 |
| 23 | A+B5 2+0.5 4∶1 | 34.29 | 16.49 |
| 24 | A+B5 0.5+0.5 1∶1 | 31.43 | 12.59 |
| 25 | A+B5 0.125+0.5 1∶4 | 25.71 | 8.41 |
| 26 | A+B5 0.031+0.5 1∶16 | 11.43 | 5.71 |
" * ": the effectiveness of using the Colby formula to calculate.
Application Example 2 is prevented and treated powdery mildew of cucumber (Erysiphe cucurbitacearum) test, conservation treatment
Cultivar is sprayed to the drip point for the potted plant cucumber seedling leaf of " the close thorn in Shandong " with activity compound concentration aqueous suspension as described below.After 24 hours, be inoculated in test plants with the spore aqueous suspension of Powdery Mildew.Place 22～24 ℃ to be 75% climatic chamber 7 days with relative atmospheric humidity test plants.Then naked eyes are measured the development degree of infection process on the leaf.The activity data that the active component that each is independent and the present composition are prevented and treated powdery mildew of cucumber the results are shown in Table 3 and table 4.
The activity of the active component that table 3 is independent
The activity of table 4 present composition
| Tested number | Active compound/concentration (mg/L)/combination ratio | The effectiveness of observing (%) | The effectiveness (%) of calculating * |
| 34 | A+B4 8+1 8∶1 | 51.43 | 35.65 |
| 35 | A+B4 1+1 1∶1 | 40.00 | 16.49 |
| 36 | A+B4 0.125+1 1∶8 | 20.00 | 5.71 |
| 37 | A+B6 8+1 8∶1 | 42.86 | 31.43 |
| 38 | A+B6 1+1 1∶1 | 34.29 | 11.43 |
| 39 | A+B6 0.125+1 1∶8 | 14.29 | 0.00 |
| 40 | A+B1 | 40.57 | 31.43 |
| 8+1 8∶1 | |||
| 41 | A+B1 1+1 1∶1 | 28.57 | 11.43 |
| 42 | A+B1 0.125+1 1∶8 | 17.14 | 0.00 |
| 43 | A+B7 8+1 8∶1 | 50.48 | 35.65 |
| 44 | A+B7 1+1 1∶1 | 40.32 | 16.49 |
| 45 | A+B7 0.125+1 1∶8 | 28.57 | 5.71 |
| 46 | A+B9 8+1 8∶1 | 60.00 | 37.38 |
| 47 | A+B9 1+1 1∶1 | 48.57 | 19.02 |
| 48 | A+B9 0.125+1 1∶4 | 34.29 | 8.57 |
" * ": the effectiveness of using the Colby formula to calculate.
Application Example 3 control wheat powdery mildew (Blumeria graminis) tests, conservation treatment.
The potted plant wheat seedling leaf that with cultivar is " distant spring No. 10 " is sprayed to the drip point with activity compound concentration aqueous suspension as described below.After 24 hours, be inoculated in test plants with the spore aqueous suspension of Powdery Mildew.Place 22～24 ℃ to be that 75% climatic chamber is regulated 7 days with relative atmospheric humidity test plants.Then naked eyes are measured the development degree of infection process on the leaf.The activity data of the active component that each is independent and present composition control wheat powdery mildew the results are shown in Table 5 and table 6.
The activity of the active component that table 5 is independent
The activity of table 6 present composition
| Embodiment | Active compound combinations/concentration (mg/L)/combination ratio | The effectiveness of observing (%) | The effectiveness (%) of calculating * |
| 55 | A+B1 1+0.25 4∶1 | 54.02 | 40.23 |
| 56 | A+B1 0.25+0.25 1∶1 | 37.93 | 21.84 |
| 57 | A+B1 0.0625+0.25 1∶4 | 21.84 | 11.49 |
| 58 | A+B5 1+0.25 4∶1 | 62.23 | 45.04 |
| 59 | A+B5 0.25+0.25 1∶1 | 36.78 | 28.13 |
| 60 | A+B5 0.0625+0.25 1∶4 | 24.14 | 18.62 |
| 61 | A+B9 1+0.25 4∶1 | 58.62 | 42.98 |
| 62 | A+B9 0.25+0.25 1∶1 | 37.93 | 25.44 |
| 63 | A+B9 0.0625+0.25 1∶4 | 24.14 | 15.56 |
| 64 | A+B4 1+0.25 4∶1 | 57.47 | 40.23 |
| 65 | A+B4 0.25+0.25 1∶1 | 31.03 | 21.84 |
| 66 | A+B4 0.0625+0.25 1∶4 | 18.39 | 11.49 |
" * ": the effectiveness of using the Colby formula to calculate.
Application Example 4 is prevented and treated pear scab (Venturia pirina) test, conservation treatment
The clip kind is the Pears of " apple pear ", uses the culture dish moisturizing, is sprayed to the drip point with activity compound concentration aqueous suspension as described below.After 24 hours, be inoculated in the pears blade with the spore aqueous suspension of pear cucumerinum.Place 22～24 ℃ to cultivate 7 days pilot blade.Then naked eyes are measured the development degree of infection process on the leaf.The activity data that the active component that each is independent and the present composition are prevented and treated pear scab the results are shown in Table 7 and table 8.
The activity of the active component that table 7 is independent
The activity of table 8 present composition
| Tested number | Active compound combinations/concentration (mg/L)/combination ratio | The effectiveness of observing (%) | The effectiveness (%) of calculating * |
| 73 | A+B1 4+1 4∶1 | 41.18 | 16.95 |
| 74 | A+B1 1+1 1∶1 | 26.47 | 14.19 |
| 75 | A+B1 0.25+1 1∶4 | 14.71 | 5.88 |
| 76 | A+B2 4+1 4∶1 | 44.12 | 18.43 |
| 77 | A+B2 1+1 1∶1 | 32.35 | 15.71 |
| 78 | A+B2 0.25+1 1∶4 | 17.65 | 7.56 |
| 79 | A+B9 4+1 4∶1 | 38.24 | 19.54 |
| 80 | A+B9 1+1 1∶1 | 23.53 | 16.86 |
| 81 | A+B9 0.25+1 1∶4 | 11.76 | 8.82 |
| 82 | A+B5 4+1 4∶1 | 35.29 | 14.35 |
| 83 | A+B5 1+1 1∶1 | 29.41 | 11.50 |
| 84 | A+B5 0.25+1 1∶4 | 11.76 | 2.94 |
" * ": the effectiveness of using the Colby formula to calculate
Claims (2)
1. Fungicidal composition, active component is two kinds of components of A, B:
Component A is selected from azoles amine bacterium ester;
B component is selected from cyprodinil B1, phonetic mould amine B2, ferimzone B3, the phonetic phenol B4 of second, mepanipyrim B5, dimethirimol B6, bupirimate B7 or Fenarimol B9;
Weight ratio between component A and B component two components is 1: 16-16: 1; The weight content of active component is 0.1～95% in the composition.
2. the application of Fungicidal composition according to claim 1 aspect control graw mold of tomato, powdery mildew of cucumber, wheat powdery mildew, pear scab.
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|---|---|---|---|
| CN 200910089027 CN101953352B (en) | 2009-07-20 | 2009-07-20 | Antifungal composition containing pyraclostrobin and pyrimidine compounds |
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| CN101953352B true CN101953352B (en) | 2013-03-13 |
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|---|---|---|---|---|
| US9155317B2 (en) | 2011-02-09 | 2015-10-13 | Dsm Ip Assets B.V. | Antifungal compositions |
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| CN102696647A (en) * | 2012-06-29 | 2012-10-03 | 青岛星牌作物科学有限公司 | Sterilizing composite containing pyraclostrobin and pyrimethanil and application |
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| CN105432639B (en) * | 2015-12-07 | 2018-01-05 | 河北省农林科学院植物保护研究所 | A kind of bactericidal composition for preventing and treating vegetable disease and application |
| CN112471162B (en) * | 2020-12-02 | 2023-06-30 | 青岛海利尔生物科技有限公司 | Sterilization composition containing tetramycin and pyraclostrobin |
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| US9155317B2 (en) | 2011-02-09 | 2015-10-13 | Dsm Ip Assets B.V. | Antifungal compositions |
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