A kind of composite synergistic bactericidal composition and application thereof containing pyrazoles naphthalene bacterium amine and Tebuconazole
Technical field:
The present invention relates to a kind of bactericidal composition and uses thereof, especially a kind of composite synergistic bactericidal composition and application thereof taking pyrazoles naphthalene bacterium amine and Tebuconazole as main active.
Background technology
Pyrazoles naphthalene bacterium amine (Isopyrazam), chemical name: 3-difluoromethyl-1-methyl-N-[1,2,3,4-tetrahydrochysene-9-(1-Methylethyl)-Isosorbide-5-Nitrae-methanonaphthalen-5-yl]-1 H-pyrazole-4-carboxamide, molecular formula C
20h
23f
2n
3o, pyrazoles naphthalene bacterium amine (Isopyrazam) has following four kinds of isomer, the mixing that the present invention comprises any one or a few, chemical structural formula is as follows respectively:
The exploitation of pyrazoles naphthalene Jun Anshiyou Syngenta Co.,Ltd, this bactericide has broad spectrum of activity, multiple diseases in various crop is all had to the outstanding performance of preventing and treating, efficient to triazole type and methoxy acrylic resistant strain germ, especially very efficient to Septoria (Septoria) fungi, as the preventive effect of wheat rust and barley rust rot is all better than to epoxiconazole.This bactericide is taking protective effect as main, but in field trial, also demonstrates certain therapeutic action, and its lasting period is long, and dispenser still shows positive effect after 7 weeks, and the protection period is longer about 2 weeks than triazole bactericidal agent.The market orientation of pyrazoles naphthalene bacterium amine comprises the disease on fruit tree, vegetables and cereal.
Tebuconazole (Tebuconazole), molecular formula: C
16h
22clN
3o.Chemical name: (RS)-1-(4-chlorphenyl)-4,4-dimethyl-3-(1-H-1,2,4-triazol-1-yl methyl) penta-3-alcohol.Structural formula:
Tebuconazole belongs to triazole bactericidal agent, it is sterol demethylation inhibitor, for the seed treatment of Important Economic crop or the efficient germicide of foliage spray, can be rapidly partially absorbed and mainly pass to top conduction by plant is vegetative, not only there is bactericidal activity, also can Promoting plant growth, make it that well developed root system, leaf look dark green, robust plant, effective tiller increase, thereby raising output, can effectively prevent and treat multiple rust, powdery mildew, net blotch, root rot, the head blight of cereal crop, smut and kind pass zonate spot etc.
Triazole bactericidal agent is the bactericide kind that China's applicating history is grown, play an important role on as the control of powdery mildew, rust etc. in crop pest, although triazole type medicament is still in large-area use at present, but there is decline by a relatively large margin to the susceptibility of such medicament in bacterial strain, the using dosage in field improves gradually, environment and resistance have been produced to larger pressure, therefore should carry out correlative study and slow down the generation of resistance, be main direction of studying and adopt the pharmacy mix of different mechanism.
At present, along with the change of pattern of farming, the disease occurrence degree of melon and fruit, vegetables, cereal crop, generation quantity all increase, and are are objectively preventing and treating difficulty increasing; On the other hand, SM causes the resistance of pathogen to rise year by year under lasting medicament selection pressure, and the control efficiency of single dose is had a greatly reduced quality; The 3rd, the speed to introduce of new varieties of pesticides obviously declines at present, and lacks new action target medicament; The 4th, strict gradually due to environmental requirement, portioned product is limited to use, and causes medication selectivity to become less.In a word, how effectively plant disease being prevented and treated is the important topic that vast plant protection work person faces.
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 effective plant bactericidal composition containing pyrazoles naphthalene bacterium amine and Tebuconazole.
A further object of the invention is to provide this bactericidal composition and causes the application on fungal disease control sac fungi, basidiomycetes, imperfect fungus and Oomycete fungi, especially prevent and treat on the fungal diseases such as wheat rust, powdery mildew, leaf spot, banded sclerotial blight, full rot, smut, moire disease, head blight purposes.
The object of the invention is to realize by following measures:
A kind of composite synergistic bactericidal composition containing pyrazoles naphthalene bacterium amine and Tebuconazole, it contains pyrazoles naphthalene bacterium amine and Tebuconazole, wherein pyrazoles naphthalene bacterium amine and Tebuconazole weight ratio are 1 ~ 60:1 ~ 85, and wherein in bactericidal composition, effective ingredient is present in composition with synergy effective dose.
Described bactericidal composition, wherein pyrazoles naphthalene bacterium amine and Tebuconazole weight ratio are preferably 5 ~ 30:10 ~ 65, more preferably 8 ~ 20:15 ~ 30.
In the present composition, the two percentage by weight that accounts for composition of pyrazoles naphthalene bacterium amine and Tebuconazole is 2% ~ 90%.Be preferably 5% ~ 60%, most preferably 8% ~ 50%.
Described bactericidal composition, wherein taking pyrazoles naphthalene bacterium amine and Tebuconazole as main active ingredient and known auxiliary agent and excipient be re-dubbed any one formulation allowing on agricultural chemicals, the preferred missible oil of described formulation, suspending agent, wetting powder, aqueous emulsion, microemulsion and water dispersion granule.
These known auxiliary agents, excipients have emulsifier, wetting dispersing agent, suspending agent, defoamer, disintegrant, binding agent etc.
The aforementioned emulsifier can be applicable in insecticides adjuvant of the present invention comprises but is not limited to calcium dodecyl benzene sulfonate, the rare block compound of polyoxyethylene polyoxy third, castor oil polyoxyethylene ether, alkylphenol polyoxyethylene polyethenoxy ether, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol polyethenoxy ether, fatty alcohol-polyoxyethylene ether, phenethyl phenol polyethenoxy ether polyethenoxy ether, alkylphenol polyoxyethylene formaldehyde condensation products etc., and the phosphate of above-mentioned wherein part material and in and salt.Concrete kind is as serial in: agriculture breast 500# series, 600# series, 400# series, 1600# series, NP series, OP series, AEO series, By series, this dish series, tween etc.
The aforementioned wetting dispersing agent can be applicable in insecticides adjuvant of the present invention includes, but are not limited to one or more in sodium lignin sulfonate, calcium lignosulfonate, alkylnaphthalene sulfonate, alkylnaphthalene sulfonate formaldehyde condensation products, Abietyl quaternary ammonium salt, alkylphenol polyoxyethylene phosphate, saponin, the withered powder of tea, fatty alcohol polyoxyethylene ether sulfate, lauryl sodium sulfate, neopelex, polycarboxylic acid salt and high molecular comb shape compound etc.
It is aforementioned that to can be applicable to excipient of the present invention be one or more in water, solvent or filler.
Described solvent includes, but are not limited to one or more of toluene, dimethylbenzene, solvent naphtha series, mixed methylnaphthalene, turpentine oil, vegetable oil, methyl oleate, carrene, chloroform, methyl alcohol, ethanol, isopropyl alcohol, n-butanol, cyclohexanone, isophorone, pyrrolidones, tetrahydrofurfuryl alcohol, acetic acid dimethyl ester, acetophenone, ethyl acetate, DMF, dimethyl sulfoxide (DMSO) etc.
Described filler is selected from one or more of white carbon, kaolin, precipitated calcium carbonate, diatomite, corn starch, quartz sand, talcum powder, ammonium sulfate, sodium sulphate, sodium chloride, potassium chloride etc.
As required, also can add the functional aids such as antifreezing agent, thickener, stabilizing agent, defoamer.
Described antifreezing agent is selected from one or more of ethylene glycol, propane diols, urea, diethylene glycol (DEG), glycerine etc.
Described thickener is selected from one or more of xanthans, polyvinyl alcohol, bentonite, CMC, aluminium-magnesium silicate.
Described bactericidal composition, its formulation is missible oil, suspending agent, suspension emulsion, wetting powder, aqueous emulsion, microemulsion and water dispersion granule.
The application of described bactericidal composition aspect the germ killing drugs of preparation control cereal crop disease.Especially prevent and treat the application on the fungal disease germ killing drugs such as wheat rust, powdery mildew, leaf spot, banded sclerotial blight, full rot, smut, moire disease, head blight in preparation.
Beneficial effect of the present invention:
1, the present invention's pyrazoles naphthalene bacterium amine used is novel pyrazole acid amides bactericide, and Tebuconazole is wide spectrum triazole bactericidal agent, and mutually mixture can not produce 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, various melon and fruit, vegetables, particularly prevent and treat the crop pests such as paddy rice, wheat, barley, oat, rye, capsicum, banana, mango, grape, cucumber, tomato, as wheat rust, wheat powdery mildew, large wheat rust, wheat net blotch, take-all, barley leaf blotch, wheat leaf blight, the cercospora brown spot of peanut, grape powdery mildew, maize head smut etc.
Bactericidal composition of the present invention has good control efficiency to sac fungi, basidiomycetes, imperfect fungus and Oomycete fungal disease; Reduce because Synergistic causes consumption, can unitary agent (pyrazoles naphthalene bacterium amine and Tebuconazole are arbitrary) be developed immunity to drugs Antifungi.
Bactericidal composition of the present invention is prevented and treated the application on resistance fungi in preparation, especially all has significant effect in the application that prevents and treats wheat rust, powdery mildew, leaf spot, banded sclerotial blight, full rot, smut, moire disease, head blight.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." % " of the present invention is all weight percentage.
Compared with prior art beneficial effect of the present invention: (1) is compared with single dose, said composition antagonism fungal disease has obvious synergistic function as fungal diseases such as wheat rust, powdery mildew, leaf spot, banded sclerotial blight, full rot, smut, moire disease, head blight, 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), compared with single dose, produce and use cost reduction; (5) the drug-fast generation of Antifungi, its successful uses 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 laboratory's formulation method.
Indoor biometrics test:
Taking take-all (Gaeumannomyces graminis var. graminis (Sacc.) Walker) as test strain, adopt mycelial growth rate method indoor, measure different medicaments to concentration EC in the inhibition of bacterial strain
50value, adopts the abundant co-toxicity coefficient computational methods of Sun Yun, calculates the co-toxicity coefficient (CTC) of mixture, determines the synergy of mixture, and computational methods are as follows:
1. (conventionally select EC taking a certain single dose in mixture as standard medicament
50junior), calculate:
2. single dose toxicity index=standard medicament EC
50/ certain single dose EC in addition
50× 100
3. toxicity index × B single dose proportion in mixture of toxicity index × A single dose of theoretical toxicity index=A single dose proportion+B single dose in mixture.
4. the EC of actual measurement toxicity index=standard single dose
50the EC of value/mixture
50value × 100
5. co-toxicity coefficient CTC=actual measurement toxicity index/theoretical toxicity index × 100
Evaluate the value of mixture according to the numerical value of CTC, CTC is greater than at 120 o'clock and shows that mixture has synergetic, CTC is less than at 80 o'clock and shows that mixture has Antagonism, CTC shows that between 80-120 mixture has summation action, generally speaking, the CTC>120 of mixture is the basic demand of agriculture chemical compounding research and development.
Indoor biometrics result is as follows:
Table 1: the indoor biometrics result of the different proportionings of pyrazoles naphthalene bacterium amine+Tebuconazole to take-all
Medicament |
Virulence regression equation |
EC
50(mg/L)
|
Co-toxicity coefficient |
10% pyrazoles naphthalene bacterium amine EC |
Y= 2.7793X+ 1.2088 |
23.1254 |
--- |
25% Tebuconazole EW |
Y= 1.9161X+ 3.3861 |
6.9545 |
--- |
Embodiment 1(1:10) |
Y= 2.7457X+ 3.2795 |
4.2326 |
174.8 |
Embodiment 2(1:5) |
Y= 3.3554X+ 3.3985 |
3.0012 |
263.3 |
Embodiment 3(1:1) |
Y= 3.2864X+ 2.2116 |
7.0543 |
151.6 |
Embodiment 4(2:1) |
Y= 2.4937X+ 2.4907 |
10.1451 |
129.3 |
Embodiment 5(5:1) |
Y= 2.4108X+ 2.3156 |
12.9865 |
127.5 |
Field control effectiveness test:
Indoor biometrics shows good Pesticidal composition, must carry out actual field medicine effect test, field medicine effect test is the important means that whether final evaluation Pesticidal composition has using value under the impact of field integrated environment, therefore the pesticide mixed preparation, making with embodiment on the basis of indoor biometrics has carried out preventing and treating the field medicine effect test of take-all.
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 25% Tebuconazole EW and 10% pyrazoles naphthalene bacterium amine EC and the test of blank clear water.
2. the each community of test method area is 66.7m
2, repeat 3 times; Inspection drug effect method before dispenser after Investigation and Prevention is: in test treatment region, adopt accidental sampling, sampling 5 points,, check take-all occurrence degree by 0.5 square metre every.
Table 2: the field control effectiveness test of the different pairing of pyrazoles naphthalene bacterium amine+Tebuconazole take-all:
Result by indoor biometrics and field medicine effect test shows, pyrazoles naphthalene bacterium amine and Tebuconazole composition have obvious synergistic function, the control efficiency of composition is good, and control efficiency is all better than single dose kind, in agricultural application, has good using value.
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 pyrazoles naphthalene bacterium amine 3g, Tebuconazole 30g, sodium lignin sulfonate dispersant 6g, 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 33% wetting powder.
Embodiment 2:
By pyrazoles naphthalene bacterium amine 5g, Tebuconazole 25g, sodium lignin sulfonate dispersant 6g, 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 30% wetting powder.
Embodiment 3:
By pyrazoles naphthalene bacterium amine 15g, Tebuconazole 15g, sodium lignin sulfonate dispersant 6g, 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 30% wetting powder.
Embodiment 4:
Take pyrazoles naphthalene bacterium amine 20g, Tebuconazole 10g, sodium lignin sulfonate dispersant 6g, 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 30% wetting powder.
Embodiment 5:
Take pyrazoles naphthalene bacterium amine 25g, Tebuconazole 5g, sodium lignin sulfonate dispersant 6g, 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 30% wetting powder.
Embodiment 6:
Take 1g pyrazoles naphthalene bacterium amine, 5g Tebuconazole, phenethyl phenol polyethenoxy ether phosphate 3g, agriculture breast 33#2g, alkylphenol polyoxyethylene 1g, C5 ~ C8 solvent 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% pyrazoles naphthalene bacterium amine-tebuconazole aqueous emulsion.
Embodiment 7:
Take 50g pyrazoles naphthalene bacterium amine, 20g Tebuconazole, sodium lignin sulfonate 8g, polycarboxylate salt dispersant 2g, lauryl sodium sulfate 1g, ammonium sulfate 5g, corn starch complement to 100g.The method that above raw material is prepared to water dispersion granule routinely first mixes, cross air-flow crushing afterwards, finally mediate granulation, and making main active ingredient weight percentage is 70% pyrazoles naphthalene bacterium amine-Tebuconazole water dispersion granule.
Embodiment 8:
Take 2g pyrazoles naphthalene bacterium amine, 40g Tebuconazole, sodium lignin sulfonate 8g, polycarboxylate salt dispersant 2g, lauryl sodium sulfate 1g, ammonium sulfate 5g, corn starch complement to 100g.The method that above raw material is prepared to water dispersion granule routinely first mixes, cross air-flow crushing afterwards, finally mediate granulation, and making main active ingredient weight percentage is 42% pyrazoles naphthalene bacterium amine-Tebuconazole water dispersion granule.
Embodiment 9:
Take 5g pyrazoles naphthalene bacterium amine, 20g Tebuconazole, 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% pyrazoles naphthalene bacterium amine-tebuconazole microemulsion.
Embodiment 10:
Take 5g pyrazoles naphthalene bacterium amine, 0.5g Tebuconazole, calcium dodecyl benzene sulfonate 6g, phenethyl phenol polyethenoxy ether 7g, add vegetable oil 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% pyrazoles naphthalene bacterium amine-Tebuconazole missible oil.
Embodiment 11:
Take 5g pyrazoles naphthalene bacterium amine, 30g Tebuconazole, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, 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 35% pyrazoles naphthalene bacterium amine-tebuconazole suspension concentrates.
Embodiment 12:
Take 10g pyrazoles naphthalene bacterium amine, 10g Tebuconazole, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, 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% pyrazoles naphthalene bacterium amine-tebuconazole suspension concentrates.
Embodiment 13:
Take 30g pyrazoles naphthalene bacterium amine, 12g Tebuconazole, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, 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% pyrazoles naphthalene bacterium amine-tebuconazole suspension concentrates.
Embodiment 14:
Take 2g pyrazoles naphthalene bacterium amine, 5g Tebuconazole, sodium lignin sulfonate 8g, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite complements to 100g, and it is 7% pyrazoles naphthalene bacterium amine-Tebuconazole 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 pyrazoles naphthalene bacterium amine, 13g Tebuconazole, sodium lignin sulfonate 8g, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite complements to 100g, and it is 17% pyrazoles naphthalene bacterium amine-Tebuconazole water dispersion granule that above raw material is made to main active ingredient weight percentage by water dispersible granular agent method.
Embodiment 16:
Take 5g pyrazoles naphthalene bacterium amine, 15g Tebuconazole, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, 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% pyrazoles naphthalene bacterium amine-tebuconazole suspension concentrates.