CN103563938A - Bactericidal composition containing pyraclostrobin and difenoconazole and application thereof - Google Patents
Bactericidal composition containing pyraclostrobin and difenoconazole and application thereof Download PDFInfo
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- CN103563938A CN103563938A CN201210275674.3A CN201210275674A CN103563938A CN 103563938 A CN103563938 A CN 103563938A CN 201210275674 A CN201210275674 A CN 201210275674A CN 103563938 A CN103563938 A CN 103563938A
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Abstract
The invention discloses a bactericidal composition containing pyraclostrobin and difenoconazole and an application thereof. The bactericidal composition takes pyraclostrobin and difenoconazole as main active ingredients, wherein the weight ratio of pyraclostrobin to difenoconazole is (1-70):(1-50). The bactericidal composition can be used for preventing the diseases of cereal, melon and fruit or vegetable crops, has relatively high synergistic effect, overcomes and delays the drug resistance of germs, and realizes high bactericidal speed and long duration while the application cost is reduced and the prevention effect is obviously better than that of using a single agent. The bactericidal composition disclosed by the invention can be used for preventing fungal diseases of crops and particularly can be used for preventing the fungal diseases such as downy mildew, sheath blight, false smut, scab, brown spot, glume blight, leaf blight, rust disease, powdery mildew, early blight, leaf spot disease, net blotch and the like of the cereal, melon and fruit or vegetable crops, and the effect is better than that of using a single agent.
Description
Technical field:
The present invention relates to a kind of bactericidal composition and uses thereof, especially a kind ofly take bactericidal composition and the application thereof that pyraclostrobin and Difenoconazole be main active.
Background technology
Pyraclostrobin (Pyraclostrobin), has another name called: pyraclostrobin, chemical name is N-methoxyl group-N-2-[(N-rubigan)-3-pyrazoles oxygen ylmethyl] carbanilate.Structural formula is as follows:
Pyraclostrobin toxicity is low: rat oral >5000, and through skin >2000, to lagophthalmos eyeball nonirritant, without potential mutagenicity, without teratogenesis carcinogenicity, harmless to honeybee, hydrolysising half-life DT in water
50>30d, stable during pH5-7, Photolysis Half DT in water
50<2h, large Tanaka's soil half life period DT
502-37d.This compound not only toxicity is low, to non-target organism safety, and also all friendly safely to user and environment, by U.S. EPA, classified as " the candidate's medicament that reduces risk ".Pyraclostrobin is a kind of mitochondrial respiratory inhibitor, and it,, by suppressing electron transport system in mitochondria, present antibacterial activity, and pyraclostrobin has significant volume increase with protein complex III effect.This medicament can hinder spore-germination, gemma growth, mycelia intrusion, hapteron formation and the sporulation in pathogen living chain and cause effect, especially spore-germination is had to extremely strong inhibitory action, therefore there is distinguished preventive effect.Simultaneously, it has osmotic effect in very strong leaf and has very high rain fastness, can be used for the various crops such as wheat, peanut, paddy rice, vegetables, fruit tree, tobacco, tea tree, ornamental plants, lawn, the multiple diseases such as control sac fungi, basidiomycetes, imperfect fungus and the fungus-caused leaf blight of Oomycete, rust, powdery mildew, downy mildew, epidemic disease, anthracnose, S.scabies, brown spot, damping off.Pyraclostrobin is mainly applicable to protection and morbidity is used early stage.
Difenoconazole (difenoconazole), chemical name: suitable, the chloro-4-[4-methyl-2-1H-1 of trans-3-, 2,4-triazol-1-yl methyl)-1, the mute pentane-2-of 3-bis-yl) phenyl 4-chlorphenyl ether is (suitable, inverse proportion is about 45:55), structural formula is as follows:
Difenoconazole belongs to Difenoconazole and has protection, treatment and systemic activity, is sterol demethylation inhibitor, suppresses the biosynthesis of cell wall sterol, stops the growth of fungi.Fungicidal spectrum is wide, and leaf surface treatment or seed treatment can improve output and the guaranteed quality of crop.To Ascomycetes, Basidiomycetes with comprise the imperfect fungus of Alternaria, Ascochyta, the mould genus of tail spore, Colletotrichum, ball Cuo Pseudomonas, Phoma, Ramularia, Septoria, Venturia, Erysiphaceae, Uredinales and some Seedborne pathogen have lasting protection and therapeutic action.Simultaneously to cercospora leaf spot of sugar beet, wheat glume blight, leaf blight, rust and by several microbial mildews of causing a disease, apple scab, powdery mildew, grape powdery mildew, target, leaf spot of peanut, net blotch etc. all has good result for the treatment of.Also fine to bitter rot or anthracnose of grape, white rot effect.
The difficulty of prevention and cure of phytopathogen is increasing at present, and on the one hand, along with the change of pattern of farming, the economic crops cultivated areas such as melon and fruit, vegetables progressively expand, and disease occurrence degree, generation quantity all increase, and in control, difficulty strengthens; On the other hand, the resistance of pathogen rises year by year under lasting medicament selection pressure, and the control efficiency of single dose is had a greatly reduced quality, and control of plant disease is faced with significant challenge.
Summary of the invention:
The object of the invention is for above-mentioned technical problem provide a kind of applied widely, cost is low, the plant bactericidal composition of effective pyraclostrobin-containing and Difenoconazole.
A further object of the invention is to provide the application of this bactericidal composition on preparation control resistance plant fungal disease germ killing drugs.
The object of the invention is to realize by following measures:
, it contains pyraclostrobin and Difenoconazole, and wherein pyraclostrobin and Difenoconazole weight ratio are 1 ~ 70:1 ~ 50, and wherein in bactericidal composition, effective ingredient is present in composition with synergy effective dose.
Described bactericidal composition, wherein pyraclostrobin and Difenoconazole weight ratio are preferably 5 ~ 50:10 ~ 50, more preferably 5 ~ 40:10 ~ 30.
In the present composition, the two percentage by weight that accounts for composition of pyraclostrobin and Difenoconazole is 2% ~ 80%.Be preferably 5% ~ 50%, most preferably 8% ~ 40%.
Described bactericidal composition, wherein take pyraclostrobin and Difenoconazole to be re-dubbed any one formulation allowing on agricultural chemicals as main active ingredient and known auxiliary agent and excipient.These known auxiliary agents, excipient have dispersant, diffusant, defoamer, wetting agent, disintegrant etc.Auxiliary agent can adopt calcium dodecyl benzene sulfonate, alkylphenol polyoxyethylene, the rare block compound of polyoxyethylene polyoxy third (as agriculture breast 33
#), the one or more combinations in polyoxyethylene nonylphenol ether etc., excipient comprises cyclohexanone, dimethylbenzene, solvent naphtha, water, antifreezing agent (as propane diols), deionized water etc.Above auxiliary agent, excipient and other auxiliary material can alone or and use.
Described bactericidal composition, its formulation is missible oil, suspending agent, aqueous emulsion, wetting powder, microemulsion or water dispersible granules.
The application of described bactericidal composition on preparation control resistance plant fungal disease germ killing drugs.
Above-mentioned this compound biocide composite that is applied as occurs in downy mildew, banded sclerotial blight, false smut, scab, the brown spot on Cereal, melon and fruit or vegetable crop in preparation control, glume blight, leaf blight, rust, powdery mildew, early blight, the application on the fungal disease germ killing drugs such as leaf spot, net blotch.
Beneficial effect of the present invention:
1, the present invention's pyraclostrobin used is methoxy acrylate bactericide, and Difenoconazole is triazole bactericidal agent, and the mechanism of action is different, be mutually mixed and can not produce conflict, but can Synergistic, reduce dosage, reduce costs.
2, the present composition scope of application increases, be applicable to prevent and treat the crop pest of Cereal, various melon and fruit, vegetables, particularly prevent and treat the crop pests such as paddy rice, wheat, soybean, banana, apple, pears, grape, tomato, as pear scab, alternaria leaf spot of apple, tomato drought epidemic disease, the climing rot of watermelon, pepper anthracnose, powdery mildew of strawberry, bitter rot or anthracnose of grape, black Ya disease, citrus scab etc.
Bactericidal composition of the present invention has good control efficiency to sac fungi, basidiomycetes, imperfect fungus and Oomycete fungal disease; And suppress insect or the drug-fast generation of fungi to unitary agent (pyraclostrobin and Difenoconazole are arbitrary).
Bactericidal composition of the present invention is prevented and treated the application on resistance fungi in preparation, especially preventing and treating downy mildew, banded sclerotial blight, false smut, scab, brown spot, glume blight, leaf blight, rust, powdery mildew, early blight, the application of leaf spot, net blotch all has significant effect.Above-mentioned bactericidal composition can produce higher synergistic function, and the consumption of the independent reactive compound of amount ratio of this mixture reduces greatly, and the activity of mixture is greater than the activity of independent component.
Beneficial effect of the present invention compared with prior art: (1) is compared with single dose, said composition antagonism fungal disease has obvious synergistic function as fungal diseases such as rust, powdery mildew, downy mildew, epidemic disease, anthracnose, S.scabies, brown spot, late blights, overcome and delayed pesticide resistance, expanding prevention spectrum, has obviously improved control efficiency; (2) reduce control recruitment, drug cost; (3) alternative routine and the easily agricultural chemicals of generation resistance; (4) compare with single dose, produce and use cost reduction; (5) the drug-fast generation of Antifungi, its successful is used higher than its single dose.
Embodiment
Below in conjunction with embodiment, the invention will be further described, and in embodiment, the preparation method of formulation is conventional method.
Two kinds of reactive compounds can be processed into any one formulation of permission, and below with two kinds of preparations that active ingredient is processed into of specific embodiment explanation, but the preparation that these two kinds of active components can be processed is not limited only to following listed.
Embodiment 1:
By pyraclostrobin 7.5g, Difenoconazole 7.5g, detergent LS(to methoxyl group fatty acyl amido benzene sulfonic acid sodium salt) 2g, dispersing agent NNO (sodium methylene bis-naphthalene sulfonate) 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and making main active ingredient weight percentage is 15% wetting powder.
Embodiment 2:
By pyraclostrobin 3g, Difenoconazole 12g, detergent LS 3g, dispersing agent NNO 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and making main active ingredient weight percentage is 15% wetting powder.
Embodiment 3:
By pyraclostrobin 2g, Difenoconazole 13g, detergent LS 3g, dispersing agent NNO 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and making main active ingredient weight percentage is 15% wetting powder.
Embodiment 4:
Take 5g pyraclostrobin, 50g Difenoconazole, phenethyl phenol polyethenoxy ether phosphate 3g, agriculture breast 33#2g, alkylphenol polyoxyethylene 1g, solvent naphtha 13g, adds water to 100g.The method of above raw material being prepared routinely to aqueous emulsion drops into the mixing of mixing kettle high speed, and making main active ingredient weight percentage is 55% pyraclostrobin difenoconazole water emulsion.
Embodiment 5:
Take 10g pyraclostrobin, 30g Difenoconazole, calcium dodecyl benzene sulfonate 6g, phenethyl phenol polyethenoxy ether phosphate 3g, agriculture breast 33#2g, alkylphenol polyoxyethylene 1g, isopropyl alcohol 10g, adds water to 100g.The method that above raw material is prepared to microemulsion routinely drops in mixing kettle mixes, and making main active ingredient weight percentage is 40% pyraclostrobin micro-emulsion of phenyl ether methyl cyclic-azole.
Embodiment 6:
Take 1g pyraclostrobin, 5g Difenoconazole, phenethyl phenol polyethenoxy ether phosphate 3g, agriculture breast 33#2g, alkylphenol polyoxyethylene 1g, solvent naphtha 13g, adds water to 100g.The method of above raw material being prepared routinely to aqueous emulsion drops into the mixing of mixing kettle high speed, and making main active ingredient weight percentage is 6% pyraclostrobin difenoconazole water emulsion.
Embodiment 7:
Take 50g pyraclostrobin, 20g Difenoconazole, calcium dodecyl benzene sulfonate 5g, phenethyl phenol polyethenoxy ether 2g, solvent naphtha are to 100g.The method that above raw material is prepared to missible oil routinely drops in mixing kettle mixes, and making main active ingredient weight percentage is 70% pyraclostrobin Difenoconazole missible oil.
Embodiment 8:
Take 2g pyraclostrobin, 40g Difenoconazole, calcium dodecyl benzene sulfonate 8g, phenethyl phenol polyethenoxy ether 5g, solvent naphtha are to 100g.The method that above raw material is prepared to missible oil routinely drops in mixing kettle mixes, and making main active ingredient weight percentage is 42% pyraclostrobin Difenoconazole missible oil.
Embodiment 9:
Take 5g pyraclostrobin, 20g Difenoconazole, calcium dodecyl benzene sulfonate 6g, phenethyl phenol polyethenoxy ether phosphate 3g, agriculture breast 33#2g, alkylphenol polyoxyethylene 1g, isopropyl alcohol 10g, adds water to 100g.The method that above raw material is prepared to microemulsion routinely drops in mixing kettle mixes, and making main active ingredient weight percentage is 25% pyraclostrobin micro-emulsion of phenyl ether methyl cyclic-azole.
Embodiment 10:
Take 20g pyraclostrobin, 10g Difenoconazole, calcium dodecyl benzene sulfonate 6g, phenethyl phenol polyethenoxy ether 7g, solvent naphtha are to 100g.The method that above raw material is prepared to missible oil routinely drops in mixing kettle mixes, and making main active ingredient weight percentage is 30% pyraclostrobin Difenoconazole missible oil.
Embodiment 11:
Take 5g pyraclostrobin, 30g Difenoconazole, calcium dodecyl benzene sulfonate 4g, phenethyl phenol polyethenoxy ether 4g, solvent naphtha are to 100g.The method that above raw material is prepared to missible oil routinely drops in mixing kettle mixes, and making main active ingredient weight percentage is 35% pyraclostrobin Difenoconazole missible oil.
Embodiment 12:
Take 10g pyraclostrobin, 10g Difenoconazole, lignin 2g, alkyl phenol (or fatty alcohol) polyoxyethylene poly-oxygen propylene aether and sulphate 4g thereof, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, water complements to 100g, and under the effect of sand mill, making main active ingredient weight percentage is 20% pyraclostrobin difenoconazole suspending agent.
Embodiment 13:
Take 30g pyraclostrobin, 12g Difenoconazole, lignin 2g, alkyl phenol (or fatty alcohol) polyoxyethylene poly-oxygen propylene aether and sulphate 4g thereof, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, water complements to 100g, and under the effect of sand mill, making main active ingredient weight percentage is 42% pyraclostrobin difenoconazole suspending agent.
Embodiment 14:
Take 2g pyraclostrobin, 5g Difenoconazole, sodium lignin sulfonate 8g, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite complements to 100g, and it is 7% pyraclostrobin Difenoconazole water dispersion granule that above raw material is made to main active ingredient weight percentage by water dispersible granular agent method.
Embodiment 15:
Take 4g pyraclostrobin, 13g Difenoconazole, sodium lignin sulfonate 8g, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite complements to 100g, and it is 17% pyraclostrobin Difenoconazole water dispersion granule that above raw material is made to main active ingredient weight percentage by water dispersible granular agent method.
Embodiment 16:
Take 70g pyraclostrobin, 2g Difenoconazole, lignin 2g, alkyl phenol (or fatty alcohol) polyoxyethylene poly-oxygen propylene aether and sulphate 4g thereof, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, water complements to 100g, and under the effect of sand mill, making main active ingredient weight percentage is 72% pyraclostrobin difenoconazole suspending agent.
Indoor biometrics test:
In indoor employing mycelial growth rate method, measure the EC of different medicaments to bacterial strain
50be worth, adopt the co-toxicity coefficient computational methods of the abundant introduction of Sun Yun, calculate the co-toxicity coefficient (CTC) of mixture, determine the synergy of mixture.
The a certain single dose of take in mixture (is selected EC conventionally as standard medicament
50junior), calculate:
Single dose toxicity index=standard medicament EC
50/ certain single dose EC
50* 100
Toxicity index * B single dose proportion in mixture of toxicity index * A single dose proportion+B single dose in mixture of theoretical toxicity index=A single dose
The EC of actual measurement toxicity index=standard single dose
50the EC of value/mixture
50value * 100
Co-toxicity coefficient=actual measurement toxicity index/theoretical toxicity index * 100
CTC is greater than 120 o'clock mixtures and has synergetic, and it is antagonism that CTC is less than at 80 o'clock, and CTC is summation action between 80-120.
Table 1: the indoor biometrics result of the different proportionings of pyraclostrobin+Difenoconazole to wheat powdery mildew
| Medicament | Virulence regression equation | EC50（mg/L） | Co-toxicity coefficient |
| 24% pyraclostrobin EC | Y= 5.9672X+ 1.7167 | 3.55 | — |
| 10% Difenoconazole WDG | Y= 2.0129X+ 1.8117 | 38.36 | — |
| Embodiment 1 | Y= 3.8797X+ 2.5694 | 4.2315 | 153 |
| Embodiment 2 | Y= 1.2856X+ 3.8359 | 8.0451 | 164 |
| Embodiment 3 | Y= 3.3762X+ 1.4513 | 11.2487 | 150 |
Field control effectiveness test:
The pesticidal preparations control cucumber downy mildew test making with above-described embodiment.
1, test is processed: this test medicine consumption is established respectively three concentration for the treatment of according to the difference of each composition, and contrast medicament is respectively commercially available agricultural chemicals 10% Difenoconazole WDG(water dispersible granules) and 24% pyraclostrobin EC(missible oil) and the test of blank clear water.
2, each community area of test method is 66.7m
2, repeat 3 times; Inspection drug effect method before dispenser after Investigation and Prevention is: random sampling 5 points in test treatment region, check cucumber downy mildew occurrence degree.
3, result of the test sees the following form:
Note: a is illustrated in the level of α=0.05 remarkable, and b is illustrated in the level of α=0.05 variant, and c is illustrated in the level of α=0.05 not remarkable.
By indoor biometrics and field efficacy result, show, pyraclostrobin and Difenoconazole composition have obvious synergistic function, and the control efficiency of composition is good, and control efficiency is all better than single dose kind, in agricultural application, have using value.
Claims (10)
1. a bactericidal composition, is characterized in that containing pyraclostrobin and Difenoconazole, and wherein the weight ratio of pyraclostrobin and Difenoconazole is 1 ~ 70:1 ~ 50.
2. bactericidal composition according to claim 1, the weight ratio that it is characterized in that pyraclostrobin and Difenoconazole is 5 ~ 50:10 ~ 50.
3. bactericidal composition according to claim 2, is characterized in that described pyraclostrobin and the weight ratio of Difenoconazole are 5 ~ 40:10 ~ 30.
4. bactericidal composition according to claim 1, is characterized in that the two weight percentage that accounts for composition of pyraclostrobin and Difenoconazole is 2% ~ 80%.
5. bactericidal composition according to claim 4, is characterized in that the two weight percentage that accounts for composition of pyraclostrobin and Difenoconazole is 5% ~ 50%.
6. bactericidal composition according to claim 5, is characterized in that the two weight percentage that accounts for composition of pyraclostrobin and Difenoconazole is 8% ~ 40%.
7. bactericidal composition according to claim 1, is characterized in that take that pyraclostrobin and Difenoconazole are mixed with any one formulation allowing on agricultural chemicals as main active ingredient and insecticides adjuvant, excipient.
8. bactericidal composition according to claim 7, is characterized in that described formulation is missible oil, suspending agent, aqueous emulsion, wetting powder, microemulsion or water dispersible granules.
9. the application of bactericidal composition claimed in claim 1 on preparation control resistance plant fungal disease germ killing drugs.
10. this compound biocide composite that is applied as according to claim 9 occurs in downy mildew, banded sclerotial blight, false smut, scab, the brown spot on Cereal, melon and fruit or vegetable crop in preparation control, glume blight, leaf blight, rust, powdery mildew, early blight, the application on the fungal disease germ killing drugs such as leaf spot, net blotch.
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| CN105191959A (en) * | 2015-10-15 | 2015-12-30 | 北京中农益田化工有限公司 | Suspending agent containing pyraclostrobin and difenoconazole and preparation method of suspending agent |
| CN106332873A (en) * | 2016-08-25 | 2017-01-18 | 安徽美兰农业发展股份有限公司 | Difenoconazole and pyraclostrobin compound emulsifiable concentrate and preparation method thereof |
| CN107897199A (en) * | 2017-12-29 | 2018-04-13 | 上海悦联生物科技有限公司 | A kind of composite bactericide composition of difenoconazole and pyraclostrobin |
| CN110583640A (en) * | 2019-09-30 | 2019-12-20 | 江苏七洲绿色化工股份有限公司 | Emulsifiable granule containing pyraclostrobin and difenoconazole and preparation method and application thereof |
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Application publication date: 20140212 |