CN103719120A - Sterilization composition containing pyraclostrobin and boscalid - Google Patents
Sterilization composition containing pyraclostrobin and boscalid Download PDFInfo
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- CN103719120A CN103719120A CN201210389255.2A CN201210389255A CN103719120A CN 103719120 A CN103719120 A CN 103719120A CN 201210389255 A CN201210389255 A CN 201210389255A CN 103719120 A CN103719120 A CN 103719120A
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Abstract
The invention relates to a sterilization composition containing pyraclostrobin and boscalid, which comprises an effective component of a binary compound of pyraclostrobin and boscalid, and others of auxiliary components. The mass ratio of pyraclostrobin and boscalid in the effective component is 1-75:80-1. The total mass of the effective component of pyraclostrobin and boscalid in the preparation accounts for 1%-80% of the total mass of the whole preparation. The sterilization composition of the invention can be prepared into pesticides in dosage forms of missible oil, suspending agents, wettable powder, water dispersible granules, emulsion in water, and microemulsion, and is mainly used for controlling crop diseases such as powdery mildew, downy mildew, leaf spot diseases, scab, botrytis, various rot diseases, brown rot, root rot, and the like.
Description
Technical field
The present invention relates to synergetic pesticide composition, particularly relate to a kind of bactericidal composition that contains pyraclostrobin and Boscalid.
Background technology
Pyraclostrobin (pyraclostrobin) is the bactericide of BASF AG's latest model methoxy acrylic.Pyraclostrobin is New-type wide-spectrum bactericide.The mechanism of action: be mitochondrial respiratory inhibitor. by stoping electronics to shift in cytochrome b cl is synthetic.There is protection, treatment, blade infiltration conduction.Pyraclostrobin missible oil shows that through field control effectiveness test result powdery mildew of cucumber, downy mildew and banana freckle, leaf spot are had to good control efficiency.Chemical name: N-f2 mono-" 1 one (4 monochloro-benzene) 1H-pyrazoles-3-yloxymethyl " benzene is foretold N mono-methoxy methyl carbamate.Its chemical structural formula is
Boscalid is the Novel tobacco acid amide fungicides of being developed by BASF Aktiengesellschaft, be mainly used in preventing and treating powdery mildew, gray mold, various rot, brown rot and root rot etc., Boscalid belongs to succinic acid ubiquinone reductase inhibitor in mitochondrial respiratory chain, the sprouting of spore is had to very strong inhibition ability, and with other bactericide without cross resistance.The chloro-N-of Boscalid chemical name: 2-(4 '-chlorodiphenyl-2-yl) vitamin PP, its chemical structural formula is
Using chemical agent is the most effectively means of controlling plant diseases.But long-term use single chemical bactericide continuously high dose, easily cause the problems such as residual, the environmental pollution of medicament and resistance to pesticide resistance fungi development.Reasonably the composite or mixture of chemical bactericide has expansion fungicidal spectrum, improve control efficiency, extend the optimum period for applying fertilizer, reduce dosage, reduce poisoning, reduce residual, delay positive feature such as Antifungal resistance and drug-fast generation and development etc., bactericide compounded is one of the effective method the most addressing the above problem.Exploitation new product bactericide price is constantly soaring, and by contrast, exploitation is efficient with research, composite and the mixture of low toxicity, low-residual has small investment, the lead time is short and be subject to domestic and international attention, and numerous and confused increasing develops dynamics.We filter out pyraclostrobin and Boscalid and carry out compositely on the basis of lab screening and field trial, have obvious synergistic effect.And about the composite bactericidal composition of pyraclostrobin and Boscalid and application, there is no at present people reported.
Summary of the invention
Based on above situation, the object of the invention is to provide a kind of new and effective pesticide sterilizing composite.Be used for preventing and treating the crop diseases such as powdery mildew, downy mildew, leaf spot, scab, gray mold, various rot, brown rot and root rot.
Technical scheme of the present invention realizes by following measures:
A bactericidal composition that contains pyraclostrobin and Boscalid, two yuan of the active ingredient pyraclostrobin of this bactericidal composition and Boscalids are composite, and all the other are auxiliary element.In wherein said Pesticidal combination, the mass ratio of active ingredient pyraclostrobin and Boscalid is 1～75: 80～1, described bactericidal composition of the present invention is through toxicity test experimental verification, the mass ratio of pyraclostrobin and Boscalid is 1～40: 45～1 o'clock, and synergistic effect is better.
The formulations of pesticide that described bactericidal composition of the present invention can be prepared are missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion.Wherein active ingredient pyraclostrobin and the Boscalid gross mass in preparation accounts for 1%～80% of the whole quality of the pharmaceutical preparations, while wherein accounting for 5%-50%, and toxicity and residually reach good balance, cost is also lower.
The specific embodiments of the formulations of pesticide that bactericidal composition of the present invention is mixed with is as follows:
Described bactericidal composition is cream preparation, and the mass fraction of component is:
1～75 part of pyraclostrobin
1～80 part of Boscalid
10～30 parts of conventional emulsifiers
20～50 parts of conventional solvents
1～5 part of conventional synergist.
The concrete production stage of this cream preparation is first active ingredient pyraclostrobin and Boscalid to be added in solvent to the oily liquids that becomes transparent and homogeneous after adding again emulsifier, synergist to stir after dissolving completely, filling, can be made into the cream preparation of the present composition.
Described bactericidal composition is suspending agent, and the mass fraction of component is:
1～75 part of pyraclostrobin
1～80 part of Boscalid
5～20 parts of dispersants
1～5 part of antifreezing agent
0.1～2 part of thickener
0.1～0.8 part of defoamer
0～10 part of penetrating agent
0.1～5 part of pH value conditioning agent
Water surplus.
The concrete production stage of this suspending agent is for first mixing other auxiliary agents, through high speed shear, mix, add active ingredient pyraclostrobin and Boscalid, abrading-ball 2～3 hours in ball crusher, make a diameter all below 5mm, can be made into the suspending agent preparation of the present composition.
Described bactericidal composition is wetting powder, and the mass fraction of component is:
1～75 part of pyraclostrobin
1～80 part of Boscalid
3～10 parts of dispersants
1～5 part of wetting agent
Filler surplus.
The concrete production stage of this wetting powder is: by above-mentioned formula, active ingredient pyraclostrobin is mixed with Boscalid and dispersant, wetting agent and filler, uniform stirring in stirred tank, after airslide disintegrating mill, mixing, can be made into the wetting powder of the present composition.
Described bactericidal composition is water dispersible granules, and the mass fraction of component is:
1～75 part of pyraclostrobin
1～80 part of Boscalid
3～10 parts of dispersants
1～10 part of wetting agent
1～5 part of disintegrant
Filler surplus.
The concrete production stage of this water dispersible granules is: by above-mentioned formula, active ingredient pyraclostrobin is mixed with Boscalid and dispersant, wetting agent, disintegrant and filler, pulverize with micro jet, through mediating, then add and in fluidized bed prilling dryer, carry out after granulation, dry, screening, through sample analysis, can be made into the water dispersible granules of the present composition.
Described bactericidal composition is aqueous emulsion, and the mass fraction of component is:
1～75 part of pyraclostrobin
1～80 part of Boscalid
3～30 parts of emulsifier
5～15 parts of solvents
2～15 parts of stabilizing agents
1～5 part of antifreezing agent
0.1～8 part of defoamer
0.2～2 part of thickener
Water surplus
The concrete production stage of this aqueous emulsion is: first pyraclostrobin and Boscalid, solvent and emulsifier, cosolvent are added together, make to be dissolved into uniform oil phase; By part water, antifreeze, other the insecticides adjuvant such as antimicrobial mixes into uniform water; When reactor high speed stirs, oil phase is added to water, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water, shear about half an hour, form the aqueous emulsion of oil-in-water type, can be made into the aqueous emulsion of the present composition.
Wherein above-described emulsifier is selected from calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, any or more than one any mixtures than forming in polyoxyethylene aliphatic alcohol ether.
Described solvent is dimethylbenzene or biodiesel, toluene, and diesel oil, methyl alcohol, ethanol, n-butanol, isopropyl alcohol, turpentine oil, solvent naphtha, dimethyl formamide, dimethyl sulfoxide (DMSO), one or more in water equal solvent are arbitrarily than the mixture of composition.
Described dispersant is selected from polycarboxylate, lignosulfonates, alkylphenol polyoxyethylene methyl ether condensate sulfate, alkylsulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, polyoxyethylene carboxylate, aliphatic amine polyoxyethylene ether, one or more in fatty acid glyceride APEO.
Described wetting agent is selected from lauryl sodium sulfate, calcium dodecyl benzene sulfonate, Nekal BX, moistening bleeding agent F, alkylbenzenesulfonate polyoxyethylene triphen phosphenylic acid salt dimly, spaonin powder, silkworm excrement, one or more in soapberry powder.
Described disintegrant is selected from bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, one or more in sodium bicarbonate.
Described thickener is selected from xanthans, carboxymethyl cellulose, carboxyethyl cellulose, methylcellulose, Magnesiumaluminumsilicate, in polyvinyl alcohol one or more.
Described stabilizing agent is selected from sodium citrate, the one in resorcinol.
Described antifreezing agent is selected from ethylene glycol, propane diols, one or more in glycerine.
Described defoamer is selected from silicone oil, silicone compound, C
10-20saturated fat acid compounds, C
8-10one or more of fatty alcohol.
Described filler is selected from kaolin, diatomite, bentonite, attapulgite, white carbon, starch, one or more in precipitated calcium carbonate.
Bactericidal composition of the present invention has obvious synergistic effect take pyraclostrobin and Boscalid as the composite bactericide of active ingredient,, delay the drug-fast generation in key, and reduced to become to produce cost and use cost, can be used for the improvement of resistance disease.Be mainly used in preventing and treating the crop diseases such as powdery mildew, downy mildew, leaf spot, scab, gray mold, various rot, brown rot and root rot.This invention can significantly make up the deficiency of single dose at lasting effect fermentation, accomplishes that quick-acting and lasting effect take into account, and residual low, easily decomposes environmental protection more.
Embodiment
For making technical scheme of the present invention, object and advantage are clearer, and the present invention describes with following specific embodiment, but the present invention is not limited to these examples.The mode that effect experiment of the present invention adopts indoor biometrics and field trial to combine, if no special instructions, the ratio of below mentioning is all ratio of quality and the number of copies.
Embodiment: pyraclostrobin proportioning co-toxicity experiments different from Boscalid.
1.1 reagent agent
The former medicine of 95% pyraclostrobin, the former medicine of 96% Boscalid, above-mentioned former medicine provides by research and development department of Qingdao Hailir Pesticides and Chemical Co., Ltd..
1.2 test targets
From Shouguang, Shandong, never executed pyraclostrobin and Boscalid and cucumber of the same type gather potted plantly separation, for examination cucumber variety: Chang Chun Mi Ci.
1.3 test method
1.3.1 medicament preparation
First use the former medicine of acetone solution, according to the result of preliminary experiment, two appropriate former medicines are made into 5 different proportionings, with acetone, each processing is diluted to respectively to 5 concentration gradients more stand-by, the ratio of 5 38% pyraclostrobin proportioning active ingredients different from Boscalid is respectively 9:29; 11:27; 13:25; 15:23; 17:21.Be diluted to respectively 5 series concentration gradients stand-by.
Susceptible cucumber variety Chang Chun Mi Ci is cultivated in pot for growing seedlings, be placed in greenhouse and cultivate, plant grows to three to four leaf after dates, gathers the blade of identical leaf age, for cultivation and the mensuration of powdery mildew of cucumber bacterium.
1.3.2 the cultivation of powdery mildew of cucumber bacterium and the preparation of spore suspension
Powdery mildew of cucumber bacterium adopts plants method to cultivate under 20 ℃, the condition of 12h alternation of light and darkness, and every 30 d turn culture 1 time.During inoculation, with the conidium on sterile water wash-out incidence of leaf, being mixed with spore concentration is l × 10
6the suspension of individual/mL.
1.3.3 strains tested sensitivity testing
Adopt leaf dish moisturizing method to carry out toxicity test.First the blade of collection is prepared into the leaf dish that diameter is 1.5cm, mix at random, be placed in respectively the series concentration liquid configuring and soak lh, 50 leaf dishes of each concentration, test is with the blank that is treated to of adding medicine not, after immersion finishes, leaf faces up and puts on the wetting blotting paper of identical liquor strength, liquid on leaf dish is blotted, the spore suspension l0L preparing is inoculated in to leaf dish central authorities, and room temperature is placed after 5 min, is placed under 20 ℃, the condition of 1 2h alternation of light and darkness and cultivates, after 10d, measure the onset area on leaf dish, calculate EC
50.
On the basis of preliminary experiment, in order to upper method, respectively single dose pyraclostrobin and Boscalid are carried out to toxicity test, the two EC
50value is respectively 6.74 ㎎/l and 3.96 ㎎/l
The percentage that accounts for leaf disc area according to lesion area is divided sick level
0 grade: anosis;
1 grade: sorus area accounts for below 5% of whole leaf area;
3 grades: sorus area accounts for below the 6%-10% of whole leaf area;
5 grades: sorus area accounts for below the 11%-20% of whole leaf area;
7 grades: sorus area accounts for below the 21%-50% of whole leaf area;
9 grades: sorus area accounts for the more than 50% of whole leaf area;
1.3.4 mixture toxicity test and interpretation of result
By single dose toxicity test method, according to mixed ratio, carry out the toxicity test of mixture.
If contrast lethality <5%, does not proofread and correct, contrast lethality, between 5%-20%, is proofreaied and correct by formula 2, contrast lethality >20%, and test need be reformed.
Take the logarithm value of drug concentration (mg/L) as independent variable x, take the probability value of corrected mortality as dependent variable y, set up respectively virulence regression equation formula, adopt DPS software to calculate the LC of single dose and each proportioning mixture
50according to the abundant method of Sun Yun, calculate co-toxicity coefficient (CTC).Co-toxicity coefficient CTC, computing formula is as follows: (take pyraclostrobin as standard medicament, its toxicity index is 100):
The LC of toxicity index (the TI)=pyraclostrobin of Boscalid
50the LC of/Boscalid
50× 100
The LC of true toxicity index (ATI)=pyraclostrobin of M
50the LC of/M
50× 100
TI × P Boscalid of TI × P pyraclostrobin+Boscalid of theoretical toxicity index (TTI)=pyraclostrobin of M
TTI × 100 of the ATI/M of co-toxicity coefficient (CTC)=M of M
In formula:
M is pyraclostrobin and the mixture of the different proportionings of Boscalid
P pyraclostrobin is pyraclostrobin shared ratio in mixture
P Boscalid is Boscalid shared ratio in mixture
2.1 toxicity test results
Table 1 pyraclostrobin and the Boscalid toxicity test to powdery mildew of cucumber
| Process title | Proportioning | Virulence regression equation (Y=a+bX) | Correlation coefficient r value | LC 50（mg/L） | Co-toxicity coefficient (CTC) |
| Pyraclostrobin | _____ | Y=2.3784X+3.0291 | 0.9894 | 6.74 | _______ |
| Boscalid | _____ | Y=1.1348X+4.3217 | 0.9882 | 3.96 | _______ |
| Pyraclostrobin: Boscalid | 9：29 | Y=2.4421X+3.8526 | 0.9892 | 3.36 | 130.62 |
| Pyraclostrobin: Boscalid | 11：27 | Y=2.1356X+3.9388 | 0.9914 | 3.14 | 143.35 |
| Pyraclostrobin: Boscalid | 13：25 | Y=2.7437X+3.7109 | 0.9891 | 2.95 | 156.43 |
| Pyraclostrobin: Boscalid | 15：23 | Y=2.9133X+3.4479 | 0.9884 | 3.41 | 138.83 |
| Pyraclostrobin: Boscalid | 17：21 | Y=2.7839X+3.4215 | 0.9901 | 3.69 | 131.71 |
As can be seen from the table, in different proportionings, in active ingredient ratio, be 9:29; 11:27; 13:25; 15:23; When 17:21 dilutes respectively, all show stronger synergistic effect, its co-toxicity coefficient is all greater than 120, shows certain synergistic effect, wherein pyraclostrobin: the synergistic effect that the mass ratio of Boscalid is 13:25 is the most obvious, and co-toxicity coefficient is 156.43.Suggestion is carried out further field control effectiveness test to suitable proportion 13:25 left and right mixture preparation, to evaluate its field practical application effect.
3 field trials are prevented and treated powdery mildew of cucumber, the experimental result of gray mold
3.1 field trials are prevented and treated powdery mildew of cucumber
3.1.1 test method
Test is on Shandong Pingdu City cucumber ground, and 4 points of every community investigation, investigate 2 strains at every, by staging, record occurring degree, and grade scale is as follows:
0 grade: anosis;
1 grade: sorus area accounts for below 5% of whole leaf area;
3 grades: sorus area accounts for below the 6%-10% of whole leaf area;
5 grades: sorus area accounts for below the 11%-20% of whole leaf area;
7 grades: sorus area accounts for below the 21%-50% of whole leaf area;
9 grades: sorus area accounts for the more than 50% of whole leaf area;
3.1.2 control time and number of times
Test is investigated 4 times altogether, and radix investigation before medicine is investigated after 3 days, 7 days and medicine after medicine for 15 days.
3.1.3 drug effect computational methods
The total number of sheets × 100 of sick leaf rate (%)=sick number of sheets/investigate
Disease index=∑ (the sick number of sheets × relative level numerical value at different levels)/(investigating the total number of sheets × 9) × 100
Control efficiency (%)=(disease index after the front disease index × treatment region medicine of 1-(blank district medicine)/(the front disease index of disease index × treatment region medicine after blank district medicine)) × 100
3.1.4 poisoning investigation method
After dispenser, whether 7d range estimation medicament has poisoning to crop continuously.
3.1.5 result of the test and analysis
Each effect (table 2) of preventing and treating powdery mildew of cucumber of processing
The each effect of preventing and treating powdery mildew of cucumber of processing of table 2
38% pyraclostrobin Boscalid WDG(13:25 as shown in Table 2) composite bactericide for powdery mildew of cucumber control successful higher than pyraclostrobin and Boscalid single dose, after medicine, the bactericidal effect of 15 days is respectively 90.91,91.66,92.69.Bactericidal effect increases progressively with the increase of dosage.According to field range estimation, within the scope of test dose, plant growth is normal, and the poisoning phenomenon to cucumber does not all appear in each treatment agent, illustrates that it is safe to cucumber.Advise that the bactericide different from the mechanism of action mixes use to delay the drug-fast generation of germ.
4.1 field trial control gray molds of cucumber
4.1.1 test method
Test is on Shandong Pingdu City cucumber ground, and 4 points of every community investigation, investigate 2 strains at every, by staging, record occurring degree, and grade scale is as follows:
0 grade: anosis;
1 grade: sorus area accounts for below 5% of whole leaf area;
3 grades: sorus area accounts for below the 6%-10% of whole leaf area;
5 grades: sorus area accounts for below the 11%-20% of whole leaf area;
7 grades: sorus area accounts for below the 21%-50% of whole leaf area;
9 grades: sorus area accounts for the more than 50% of whole leaf area;
4.1.2 control time and number of times
Test is investigated 4 times altogether, and radix investigation before medicine is investigated after 3 days, 7 days and medicine after medicine for 15 days.
4.1.3 drug effect computational methods
The total number of sheets × 100 of sick leaf rate (%)=sick number of sheets/investigate
Disease index=∑ (the sick number of sheets × relative level numerical value at different levels)/(investigating the total number of sheets × 9) × 100
Control efficiency (%)=(disease index after the front disease index × treatment region medicine of 1-(blank district medicine)/(the front disease index of disease index × treatment region medicine after blank district medicine)) × 100
4.1.4 poisoning investigation method
After dispenser, whether 7d range estimation medicament has poisoning to crop continuously.
4.1.5 result of the test and analysis
Each effect (table 3) of processing control gray mold of cucumber
The each effect of processing control gray mold of cucumber of table 3
As can be seen from Table 3,38% pyraclostrobin Boscalid WDG(13:25) the effect of mixture combination control gray mold of cucumber very remarkable.The effect of complex preparation is significantly higher than single dose, its instant effect, and the lasting period is also better, is the desirable medicament of preventing and treating gray mold, and to cucumber safety, can effectively delays the drug-fast generation of germ.
In sum, the Bactericidal composite that the present invention contains pyraclostrobin and Boscalid, powdery mildew of cucumber and gray mold of cucumber are had to good control efficiency, and it is to target crop safety, complex preparation has not only improved preventive effect, and expanded fungicidal spectrum, so this compounded combination tool in production practices is of great significance.
Claims (5)
1. a bactericidal composition that contains pyraclostrobin and Boscalid, it is characterized in that: its active ingredient is pyraclostrobin and Boscalid binary built, all the other are auxiliary element, and wherein the mass ratio of active ingredient pyraclostrobin and Boscalid is 1～75: 80～1.
2. bactericidal composition according to claim 1, is characterized in that: the mass ratio of pyraclostrobin and Boscalid is preferably 1～40: 45～1.
3. bactericidal composition according to claim 1, is characterized in that: pyraclostrobin and the Boscalid gross mass in preparation accounts for 1%～80% of whole preparation gross mass.
4. bactericidal composition according to claim 3, is characterized in that: pyraclostrobin and the Boscalid gross mass in preparation accounts for 5%～50% of whole preparation gross mass.
5. according to the bactericidal composition described in claim 1 or 2 or 3 or 4, it is characterized in that: the formulations of pesticide that bactericidal composition of the present invention can be made are missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion.
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| CN104430435A (en) * | 2014-12-29 | 2015-03-25 | 河北野田农用化学有限公司 | Water-dispersing granulated pesticide containing pyraclostrobin and boscalid, preparation method and application thereof |
| CN104738050A (en) * | 2015-02-13 | 2015-07-01 | 广西壮族自治区农业科学院农产品质量安全与检测技术研究所 | Ultralow-volume liquid formulation containing benzovindiflupyr and strobilurin bactericide composition |
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| CN105418205A (en) * | 2014-09-03 | 2016-03-23 | 刘志鹏 | Apple tree rot disease prevention and control ointment |
| CN104430435A (en) * | 2014-12-29 | 2015-03-25 | 河北野田农用化学有限公司 | Water-dispersing granulated pesticide containing pyraclostrobin and boscalid, preparation method and application thereof |
| CN104738050A (en) * | 2015-02-13 | 2015-07-01 | 广西壮族自治区农业科学院农产品质量安全与检测技术研究所 | Ultralow-volume liquid formulation containing benzovindiflupyr and strobilurin bactericide composition |
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| TWI789356B (en) * | 2016-08-04 | 2023-01-11 | 香港商龍燈農業化工國際有限公司 | A synergistic fungicidal composition and use thereof |
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