CN103563919A - Bactericidal composition containing thifluzamide and triadimefon and application thereof - Google Patents
Bactericidal composition containing thifluzamide and triadimefon and application thereof Download PDFInfo
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- CN103563919A CN103563919A CN201210276544.1A CN201210276544A CN103563919A CN 103563919 A CN103563919 A CN 103563919A CN 201210276544 A CN201210276544 A CN 201210276544A CN 103563919 A CN103563919 A CN 103563919A
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Abstract
The invention belongs to the field of pesticides and discloses a bactericidal composition containing thifluzamide and triadimefon and an application thereof. The bactericidal composition takes thifluzamide and triadimefon as main active ingredients, wherein the weight ratio of thifluzamide to triadimefon is (1-70):(1-50). The bactericidal composition can be used for preventing the diseases of cereals, fruit trees and vegetables, 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 rice sheath blight, rice blast, wheat sharp eyespot, full rot, leaf blotch, smut, stinking smut, powdery mildew, rust disease, corn loose kernel smut and the like, and the effect is better than that of using a single agent.
Description
Technical field:
The present invention the invention belongs to pesticide field, relates to a kind of bactericidal composition and uses thereof, is specifically related to a kind of bactericidal composition and application thereof containing thifluzamide and triazolone.
Background technology
Thifluzamide (Thifluzamide), chemical name: 2', the bromo-2-methyl-4'-of 6'-bis-trifluoromethoxy-4-Trifluoromethyl-1,3-thiadiazoles-5-hydroxyl anilide, structural formula is as follows:
Thifluzamide is micro-poisoning microbial inoculum of Dow AgroSciences's exploitation at present, rat acute per os LD
50>5000mg/kg, rat acute is through skin LD
50>5000mg/kg, rat acute sucks LC
50>50001.4mg/L.This medicine belongs to thiazole amide bactericide, the mechanism of action is succinate dehydrogenase inhibitor, in fungi tricarbonic acid cycle, suppress the synthetic of succinate dehydrogenase, there is very strong interior suction conductivity simultaneously, can be for paddy rice, other cereal crops, lawn, peanut, potato etc., effective to pathomycetes such as black minute Pseudomonas of Rhizoctonia, Puccinia, raw meat, corticium, Ustilagos, the disease especially basidiomycetes Rhizoctonia being caused has special efficacy.The disease that concrete controlling object causes as rice sheath blight disease, cotton seedling blight, peanut branch maize ear rot, rust, potato haulm canker and Tilletia caries and Ustilago.Because this medicine is fluorine-containing, therefore its competitiveness is very strong in biochemical pathway again, once be just difficult for recovering with Binding Capacity, and this medicine still has powerful protection effect aspect seed treatment, under recommended dose, to crop safety, be a very outstanding bactericide kind.But this medicine cost is higher, while using separately, resistance produces speed.
Triazolone (Triadimefon), chemical name: 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)-2-butanone, structural formula is as follows:
Triazolone is a kind of triazole bactericidal agent, belongs to sterol demethylation inhibitor, and triazolone is triazole bactericidal agent efficient, wide spectrum, has prevention, treatment and eradicant action, and these product have strong systemic action (the upper and lower conduction of energy).Powdery mildew, rust, smut are had to special efficacy.Be mainly used in preventing and treating the disease of wheat class, fruit tree, vegetables, melon, flowers and other crops.As prevent and treat wheat rust, barley leaf blotch, bunt, loose kernel smut, full rot, wheat powdery mildew, powdery mildew of cucumber, maize head smut etc.Triazolone is outstanding to the anti-devitalizing effect of hybrid rice, uses triazolone before crop harvesting, to stop using by 35d on the cereal crops such as wheat class, corn, jowar.Triazolone is an old bactericide kind, and resistance problem progressively manifests at present.
In recent years, rice sheath blight disease, rice blast, wheat sharp eyespot, full rot, moire disease, smut, bunt, powdery mildew, rust, the morbidity such as corn loose kernel smut is serious, often cause catastrophic loss, although thifluzamide, triazolone all have comparatively desirable control efficiency, in actual applications, the difficulty of prevention and cure of phytopathogen is increasing: on the one hand, change along with pattern of farming, the economic crops such as melon and fruit, vegetables cultivated area progressively expands, 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, effective containing the plant bactericidal composition of thifluzamide and triazolone.
Another object of the present invention is to provide the application of this bactericidal composition.
The object of the invention is to realize by following measures:
, it take thifluzamide and triazolone is main active ingredient, and wherein thifluzamide and triazolone 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 thifluzamide and triazolone weight ratio are preferably 5 ~ 50: 10 ~ 50, more preferably 5 ~ 40: 10 ~ 30, particularly preferably 1: 0.1 ~ 20.
In the present composition, the two gross weight percentage composition in composition of described thifluzamide and triazolone is 2 ~ 80%.Be preferably 5 ~ 50%, most preferably 8 ~ 40%.
Described bactericidal composition, wherein thifluzamide and triazolone and known auxiliary agent and excipient are re-dubbed any one formulation allowing on agricultural chemicals.These known auxiliary agents, excipients have dispersant, diffusant, defoamer, wetting agent, disintegrant etc., 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 castor oil polyoxyethylene ether, polyoxyethylene nonylphenol ether, tween series, fatty alcohol-polyoxyethylene ether, polyethylene glycol series 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, wetting powder, suspending agent, aqueous emulsion, microemulsion or water dispersion granule.
The application of described bactericidal composition in the medicine of preparation control Cereal, melon and fruit or vegetable crop fungal disease.
Described bactericidal composition is prevented and treated rice sheath blight disease, rice blast in preparation, wheat sharp eyespot, full rot, moire disease, smut, bunt, powdery mildew, rust, the application in the medicine of corn loose kernel smut.
" % " of the present invention is mass percent.
Beneficial effect of the present invention:
1, the present invention's thifluzamide used is thiazole amide bactericide, and triazolone is triazole bactericidal agent, and both mechanisms of action are different, is mutually mixed and can not produces low touching, can Synergistic, reduce dosage, and reduce costs.
2, the present composition scope of application increases, be applicable to prevent and treat the crop pest of Cereal, fruit tree, vegetables, particularly prevent and treat the gramineous crop diseases such as paddy rice, wheat, corn, as rice sheath blight disease, rice blast, wheat sharp eyespot, full rot, moire disease, smut, bunt, powdery mildew, rust, corn loose kernel smut.
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 (thifluzamide and triazolone are arbitrary).
Embodiment
Below in conjunction with embodiment, the invention will be further described, and in embodiment, the preparation method of formulation is conventional method.
Embodiment 1:
By thifluzamide 5g, triazolone 25g, detergent LS(to methoxyl group fatty acid 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 30% wetting powder.
Embodiment 2:
By thifluzamide 9g, triazolone 30g, detergent LS3g, 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 39% wetting powder.
Embodiment 3:
By thifluzamide 4g, triazolone 30g, detergent LS3g, 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 34% wetting powder.
Embodiment 4:
Take 5g thifluzamide, 50g triazolone, 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% thifluzamide-triazolone aqueous emulsion.
Embodiment 5:
Take 2g thifluzamide, 30g triazolone, 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 32% thifluzamide-triazolone microemulsion.
Embodiment 6:
Take 1g thifluzamide, 5g triazolone, 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% thifluzamide-triazolone aqueous emulsion.
Embodiment 7:
Take 50g thifluzamide, 20g triazolone, 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% thifluzamide-triazolone missible oil.
Embodiment 8:
Take 2g thifluzamide, 40g triazolone, 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% thifluzamide-triazolone missible oil.
Embodiment 9:
Take 5g thifluzamide, 20g triazolone, 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% thifluzamide-triazolone microemulsion.
Embodiment 10:
Take 5g thifluzamide, 0.5g triazolone, 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 5.5% thifluzamide-triazolone missible oil.
Embodiment 11:
Take 5g thifluzamide, 30g triazolone, 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% thifluzamide-triazolone missible oil.
Embodiment 12:
Take 10g thifluzamide, 10g triazolone, lignin 2g, 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% thifluzamide-triazolone suspending agent.
Embodiment 13:
Take 30g thifluzamide, 12g triazolone, lignin 2g, 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% thifluzamide-triazolone suspending agent.
Embodiment 13:
Take 2g thifluzamide, 5g triazolone, the 8g of wooden sodium sulfonate, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite 28g complements to 100g, and it is 7% thifluzamide-triazolone water dispersion granule that above raw material is made to main active ingredient weight percentage by water dispersible granular agent method.
Embodiment 14:
Take 4g thifluzamide, 13g triazolone, the 8g of wooden sodium sulfonate, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite 28g complements to 100g, and it is 17% thifluzamide-triazolone water dispersion granule that above raw material is made to main active ingredient weight percentage by water dispersible granular agent method.
Embodiment 15:
Take 5g thifluzamide, 15g triazolone, lignin 2g, 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% thifluzamide-triazolone suspending agent.
Embodiment 16
Indoor biometrics test:
In indoor employing mycelial growth rate method, measure the EC of different medicaments to bacterial strain
50value, adopts co-toxicity coefficient computational methods, calculates the co-toxicity coefficient (CTC) of mixture, determines the synergy of mixture, and circular is as follows:
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
The classification of co-toxicity coefficient: 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 thifluzamide+triazolone to wheat rust germ (Puccinia recondita var.tritici Erikss.et Henn)
| Medicament | Virulence regression equation | EC 50（mg/L） | Co-toxicity coefficient |
| 240g/L thifluzamide SC | Y=2.221X+2.9638 | 8.2564 | - |
| 15% triazolone WP | Y=2.9602X+1.1781 | 19.5487 | - |
| Embodiment 1 | Y=2.8028X+2.3182 | 9.0544 | 174 |
| Embodiment 2 | Y=2.5788X+2.5374 | 9.0144 | 163 |
| Embodiment 3 | Y=2.8073X+2.0486 | 11.2546 | 131 |
Field control effectiveness test:
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 agricultural chemicals 15% triazolone WP and 240g/L thifluzamide SC and the test of blank clear water.
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 wheat rust occurrence degree.
Result of the test is in Table 2:
Table 2
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, thifluzamide and triazolone 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 take that thifluzamide and triazolone are as main active ingredient, and wherein the weight ratio of thifluzamide and triazolone is 1～70: 1～50.
2. bactericidal composition according to claim 1, is characterized in that described thifluzamide and the weight ratio of triazolone are 5～50: 10～50.
3. bactericidal composition according to claim 2, is characterized in that described thifluzamide and the weight ratio of triazolone are 5～40: 10～30, preferably 1: 0.1～20.
4. bactericidal composition according to claim 1, is characterized in that the two gross weight percentage composition in composition of described thifluzamide and triazolone is 2-80%.
5. bactericidal composition according to claim 4, is characterized in that the two gross weight percentage composition in composition of described thifluzamide and triazolone is 5-50%.
6. bactericidal composition according to claim 5, is characterized in that the two gross weight percentage composition in composition of described thifluzamide and triazolone is 10-40%.
7. bactericidal composition according to claim 1, is characterized in that take that thifluzamide and triazolone are mixed with any one formulation allowing on agricultural chemicals as main active ingredient and insecticides adjuvant, excipients.
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 dispersion granule.
9. the application of bactericidal composition claimed in claim 1 in the medicine of preparation control Cereal, melon and fruit or vegetable crop fungal disease.
10. application according to claim 9, bactericidal composition described in it is characterized in that is prevented and treated rice sheath blight disease, rice blast in preparation, wheat sharp eyespot, full rot, moire disease, smut, bunt, powdery mildew, rust, the application in the medicine of corn loose kernel smut.
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Application publication date: 20140212 |