CN105707106A - Bactericidal composition - Google Patents
Bactericidal composition Download PDFInfo
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- CN105707106A CN105707106A CN201510109397.2A CN201510109397A CN105707106A CN 105707106 A CN105707106 A CN 105707106A CN 201510109397 A CN201510109397 A CN 201510109397A CN 105707106 A CN105707106 A CN 105707106A
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- prochloraz
- fludioxonil
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Abstract
The invention discloses a bactericidal composition which comprises a composition body. Active components of the composition body are fludioxonil and prochloraz. The bactericidal composition has the advantages that the fludioxonil is a novel broad-spectrum non-internal-suction pyrrole bactericide, the prochloraz is a broad-spectrum imidazole bactericide with protection and eradiation effects, mechanisms for the prochloraz include inhibiting biological synthesis of germ ergosterol, special effects can be realized for diversified crop diseases due to ascomycetes and deuteromycota, the prochloraz does not have an internal suction property, but certain conduction effects can be realized by the prochloraz; the fludioxonil and the prochloraz have different action mechanisms and different action sites and are free of cross-resistance, and the pesticide resistance of germs can be prevented when the fludioxonil and the prochloraz are mixed with each other; synergistic effects further can be realized by the bactericidal composition, the pesticide application quantities can be reduced, and accordingly the service cost can be lowered; the fludioxonil is high in cost when used individually, but the cost can be obviously lowered when the fludioxonil and the prochloraz are mixed with each other on the premise that the efficacy is guaranteed.
Description
Technical field
The present invention relates to a kind of bactericidal composition, contain CGA-173506 and Prochloraz bactericidal composition more particularly to one, it is mainly used in prevents and treats wheat scab.
Background technology
Head blight is the important disease of Semen Tritici aestivi and Fructus Hordei Vulgaris, throughout the whole nation, is always up on the south Huaihe River and one of the most serious disease occurs middle and lower reach of Yangtze River Mai Qu, and in the time of being very popular, production loss is up to 10%-40%.In recent years, also repeatedly it is very popular Huang-Huai-Hai plain Mai Qu, northwest Mai Qu and northeast spring wheat, causes very big loss；Head blight not only causes the minimizing of wheat and barley yield, and commodity value is also low, and infected seed loses kind of use and industrial value；Simultaneously as the low product of thanking of pathogenic bacteria contains toxin, also can be poisoning after people and animals are edible；Therefore, optimum period, carries out chemical agent prevention, and High-yield Wheat good harvest is most important；In recent years, wheat scab was situation occurred frequently；Mainly fusarium graminearum is high to Detection of insecticide resistance and the resistant strain ratio of the main medicament carbendazim of preventing and treating, carbendazim and with carbendazim be main composition complex preparation can not this disease of effectively preventing under normal usage；Currently, worldwide but without the wheat breed of high resistance wheat scab, so chemical control is still main control measures；Jiangsu Prov. Inst. of Agricultural Chemicals develops the efficient new medicament of 2-cyano-3-amino-3-phenylancryic acetate, preventing and treating, wheat scab is well used, but owing to 2-cyano-3-amino-3-phenylancryic acetate is easily generated Drug resistance, for delaying Drug resistance to produce, it is badly in need of filtering out new type bactericide and the compounded combination that can effectively prevent and treat head blight.
CGA-173506, molecular weight: 248.185 molecular formula: C12H6F2N202 chemical name: 4-(2,2-bis-fluoro-1,3-benzo dioxy-4-base) pyrroles's-3-nitrile；4-(2,2-bis-fluoro-1,3-benzodioxolane-4-base) pyrroles's-3-nitrile；By suppressing the relevant transfer of glucose phosphorylated, and suppress the growth of fungal mycelium, ultimately result in pathogenic bacteria death；The mechanism of action is unique, with existing antibacterial no interactions resistance；Antibacterial resistance action group FRAC thinks that the mechanism of action of CGA-173506 is the activity affecting the histidine kinase that osmotic pressure regulates signal correction in the world, for Semen Tritici aestivi, Fructus Hordei Vulgaris, Semen Maydis, Semen Pisi sativi, Brassica campestris L, Oryza sativa L., vegetable, Fructus Vitis viniferae, lawn, ornamental crops foliar treatment, preventing and treating snow rotten Fusariumsp, Semen Tritici aestivi net raw meat black rot, rhizoctonia solani etc., have specially good effect to gray mold；Corn and non-cereal seed are processed, and preventing and treating kind passes and soil-borne disease bacterium, such as Alternaria, Ascochyta, aspergillus, Fusarium, Helminthosporium, Rhizoctonia and Penicillium bacterium.
Prochloraz, belongs to imidazoles antibacterial；Chemical name: N-propyl group-N-[2-(2,4,6-Trichlorophenoxy) ethyl]-imidazoles-1-Methanamide, molecular formula: C15H16C13N302, molecular weight is 376.7；Prochloraz is broad-spectrum germicide, it it is the kind that amino formyl imidazole apoplexy due to endogenous wind activity is the strongest, working by suppressing the biosynthesis of sterol, have good conductive performance, the multiple diseases that Ascomycetes, Basidiomycetes, deuteromycetes etc. are caused all has reasonable effect；This medicament is moderate, and spread uses aborning at present, but long-term single use, fungus resistant problem also becomes increasingly conspicuous；In prior art, CGA-173506 product is mainly used in seed treatment and prevents and treats bakanae disease, root rot, apple scab etc., and prevents and treats crops gray mold etc., and independent application easily makes pathogenic bacteria produce serious resistance, undertaken composite by different cultivars, be the effective way preventing and treating Drug resistance pathogenic bacteria；The built agent of current CGA-173506 is of less types, particularly prevent and treat wheat scab with on CGA-173506 and Prochloraz built agent but without application, and except the benzimidazole series bactericidal agents such as carbendazim, other are prevented and treated wheat scab effective agent and select kind less, it is impossible to meet the needs preventing and treating the control of crop disease such as wheat scab on producing.
Summary of the invention
(1) to solve the technical problem that
For solving the problems referred to above, the present invention proposes a kind of bactericidal composition, it is possible to avoids life-time service CGA-173506 single dose, causes that pathogenic bacteria is easily generated resistance, the defect that use cost improves.
(2) technical scheme
A kind of bactericidal composition, including compositions body, the active component of described compositions body is CGA-173506 and Prochloraz.
As preferred embodiment, the CGA-173506 of described active component and the weight ratio of Prochloraz are 10: 1～1: 10, and the weight percentage that in described compositions body, active component is total is 10～70%.
As further preferred embodiment, the CGA-173506 of described active component and the weight ratio of Prochloraz are 6: 1～1: 6, and the weight percentage that in described compositions body, active component is total is 10～60%.
As further preferred embodiment, the CGA-173506 of described active component and the weight ratio of Prochloraz are 1: 1～1: 3, and the weight percentage that in compositions body, active component is total is 20～60%.
Further, described compositions body can be the one in wettable powder, suspending agent, water dispersible granules.
(3) beneficial effect
Compared with prior art, the bactericidal composition of the present invention has the advantage that
1. the CGA-173506 used by the present invention is novel wide spectrum, non-interior suction pyroles antibacterial; Prochloraz is a kind of imidazoles broad-spectrum germicide with protection and eradicant action; its mechanism is suppress the biosynthesis of pathogenic bacteria ergosterol; the various crop disease that ascomycetes and Fungi Imperfecti are caused has specially good effect, without interior absorption energy but have certain conduction.Owing to both mechanism of action are different, action site is different, and no interactions Drug resistance, mutual mixture pathogenic bacteria is not likely to produce Drug resistance.
2. can Synergistic, reduce dosage, use cost reduce；Being used alone CGA-173506 relatively costly, with Prochloraz mixture, under the premise ensureing drug effect, cost substantially reduces.
Accompanying drawing explanation
Fig. 1 is the CGA-173506 co-toxicity figure with the composite suppression fusarium graminearum of Prochloraz of the present invention；
Fig. 2 is the CGA-173506 of the present invention and Prochloraz built agent and compare the medicament field control knot figure to wheat scab.
Detailed description of the invention
The auxiliary agent that the compositions of the present invention uses includes solvent, dispersant, emulsifying agent, stabilizer, antifreezing agent, thickening agent etc. and other is of value to the known substance that composition is stablized in the formulation and drug effect plays, it is all conventional in pesticidal preparations or permission use various compositions, being not particularly limited, concrete composition and consumption are determined by simple experiment according to recipe requirements.
Embodiment 1:
Described compositions body is suspending agent, and its concrete formula is as follows:
By formula proportion, after CGA-173506 and Prochloraz active component, surfactant, thickening agent, film former, carrier or filler and the mixing of part water, through high speed shear, wet method sand milling, making semi-finished product, after analysis, moisturizing mix homogeneously filters and namely obtains finished product；Its formula is as follows:
The weight percentage that in described compositions body, active component is total is 22%.
| 96% CGA-173506 (reactive compound) | 20.83g |
| 97% Prochloraz (reactive compound) | 2.06g |
| Sodium lignin sulfonate (dispersant) | 4g |
| Phenethyl phenol polyethenoxy ether (emulsifying agent) | 3g |
| Magnesiumaluminumsilicate (adjuvant) | 1g |
| Ethylene glycol (solvent) | 2g |
| White carbon (filler) | 2g |
| Bentonite (filler) | 2g |
| Water | 63.11g |
The weight percentage that in described compositions body, active component is total is 30%.
| 96% CGA-173506 (reactive compound) | 15.63g |
| 97% Prochloraz (reactive compound) | 15.47g |
| Sodium lignin sulfonate (dispersant) | 5g |
| Phenethyl phenol polyethenoxy ether (emulsifying agent) | 5g |
| White carbon (filler) | 2g |
| Bentonite (filler) | 2g |
| Magnesiumaluminumsilicate (adjuvant) | 2g |
| Ethylene glycol (solvent) | 5g |
| Water | 47.90g |
Embodiment 2:
Described compositions body is wettable powder, and its concrete formula is as follows:
Pesticide activity component CGA-173506 and Prochloraz, auxiliary agent, filler are mixed in proportion after comminution by gas stream and remix prepared wettable powder；Capital equipment: mixer, jet mill；
The weight percentage that in described compositions body, active component is total is 42%.
| 96% CGA-173506 (reactive compound) | 2.08g |
| 97% Prochloraz (reactive compound) | 41.24g |
| Sodium lignin sulfonate (dispersant) | 6.0g |
| Tea seed cake powder (surfactant) | 5.0g |
| Pull open powder (surfactant) | 2.5g |
| White carbon (filler) | 4.0g |
| Attapulgite (filler) | 39.18g |
The weight percentage that in described compositions body, active component is total is 36%.
| 96% CGA-173506 (reactive compound) | 31.25g |
| 97% Prochloraz (reactive compound) | 6.19g |
| Sodium lignin sulfonate (dispersant) | 6.0g |
| Sodium lauryl sulphate (dispersant) | 5.0g |
| Bentonite (filler) | 15.0g |
| Kieselguhr | 36.56g |
Embodiment 3:
Described compositions body is water-dispersible granules；Its concrete formula is as follows:
Pesticide activity component CGA-173506 and Prochloraz, auxiliary agent, filler are mixed in proportion through comminution by gas stream, then add the water of 15-20%, through kneading, pelletize, dry, the prepared water dispersible granules product of screening.Capital equipment: mixer, jet mill, kneader, Squeezinggranulator, drying equipment (drying room or fluid bed)；
The weight percentage that in described compositions body, active component is total is 40%.
| 96% CGA-173506 (reactive compound) | 10.42g |
| 97% Prochloraz (reactive compound) | 30.93g |
| Sodium lignin sulfonate (dispersant) | 8g |
| Methyl naphthalene sulfonate formaldehyde condensate (surfactant) | 7g |
| Sodium lauryl sulphate (surfactant) | 6g |
| Sodium alginate (filler) | 7g |
| Ammonium sulfate (disintegrating agent) | 5g |
| Potter's clay | 25.65g |
The weight percentage that in described compositions body, active component is total is 60%.
| 96% CGA-173506 (reactive compound) | 20.83g |
| 97% Prochloraz (reactive compound) | 41.24g |
| Sodium lignin sulfonate (dispersant) | 7g |
| Tea seed cake powder (surfactant) | 5g |
| Sodium lauryl sulphate (surfactant) | 5g |
| Ammonium sulfate (disintegrating agent) | 5g |
| Bentonite | 15.93g |
Embodiment 4:
The toxicity of fusarium graminearum is determined as follows by the CGA-173506 of the present invention and tebuconazole compound bactericide:
98% CGA-173506 (fludioxonil) former medicine；97% Prochloraz (prochloraz) former medicine；CGA-173506 and Prochloraz make the mother solution of high concentration respectively with acetone solution, and prepare 5 groups of CGA-173506 liquid mixed with Prochloraz by 6: 1,3: 1,1: 1,1: 3 and 1: 6 proportioning；On the basis of pilot study, with acetone, CGA-173506, Prochloraz and mixed liquid thereof are diluted to respectively the medicinal liquid of 5 volume mass concentrations such as 128,32,8,2 and 0.5mg/L；Under aseptic technique, process according to test and the sterilising medium 49g melted in advance is added in aseptic conical flask, from low concentration to high concentration, draw medicinal liquid 1mL successively, be separately added in above-mentioned conical flask, fully shake up；Then equivalent is poured in 4 culture dishs, makes the pastille flat board of respective concentration；Blank is made in the test process set without medicament, often processes 4 repetitions.
By cultured pathogen, aseptically with the sterilizing card punch of diameter 5mm, cutting bacterium cake from colony edge, with inoculator by pure culture biscuits involvng inoculation in pastille flat board central authorities, mycelia faces up, and covers ware lid, is placed in (28 ± 2) DEG C incubator and cultivates.
After inoculated and cultured 72h, using kind of calliper colony diameter, unit is millimeter.Each bacterium colony decussation method vertical survey diameter is each once, takes its meansigma methods.
According to survey result, calculating each concentration for the treatment of to the mycelial growth inhibition rate for examination target bacterium by formula (1), (2), unit is percentage rate (%).
D=D1-D2 ... ... ... ... ... ... ... ... ... ... (1)
In formula: D is that bacterium colony increases diameter；D1 is colony diameter；D2 is bacterium cake diameter.
I=(D0-Dt) ÷ D0 × 100 ... ... ... ... ... ... ... (2)
In formula: I is mycelial growth inhibition rate；D0 is that blank bacterium colony increases diameter；Dt chemicals treatment bacterium colony increases diameter.
Mycelial growth inhibition rate probability value according to each drug concentration logarithm value and correspondence does regression analysis, calculates the EC50 of each medicament；Calculating the co-toxicity coefficient (CTC) of mixture according to Sun Yun method, evaluate the synergy type of mixture, result is as shown in Figure 1；Result of the test shows, CGA-173506 inhibition to fusarium graminearum composite with Prochloraz different ratio all shows and be added or potentiation, and wherein 3: 1～1: 6 proportioning activity are the highest, and co-toxicity coefficient reaches 124.47～157.02, and potentiation is notable.
Embodiment 5:
The composite field test to wheat scab of CGA-173506, Prochloraz is as follows:
Field test processes and is respectively as follows: with dosage
Process 1: the weight percentage that in the compositions body in embodiment 1, active component is total is 22%；
Process 2: the weight percentage that in the compositions body in embodiment 1, active component is total is 30%；
Process 3: the weight percentage that in the compositions body in embodiment 2, active component is total is 42%；
Process 4: the weight percentage that in the compositions body in embodiment 2, active component is total is 36%；
Process 5: the weight percentage that in the compositions body in embodiment 3, active component is total is 40%；
Process 6: the weight percentage that in the compositions body in embodiment 3, active component is total is 60%；
Above dosage is 150g.ai/hm2；
Each single preparation processes and is respectively as follows:
Process 7:12% CGA-173506 suspending agent 120g.ai/hm2,
Process 8:25% Prochloraz cream 150g.ai/hm2,
Conventional medicament:
Process 9:50% carbendazol wettable powder 600g.ai/hm2, process 10, clear water (CK).
Spraying time is that jan flowering wheat is sprayed once；Wheat breed is Yangmai 11；Water consumption is 600kg/hm2, prevention and controls is thin spraying.
Field control it is shown that as in figure 2 it is shown, process 1 to process 6 when same medicine amount and the Semen Tritici aestivi flowering initial stage prevent and treat 1 time,；Preventive effect respectively 86.15%, 96.02%, 82.33%, 94.74%, 97.24%, 96.70%, and produces upper conventional medicament 50% carbendazol wettable powder 600g.ai/hm2Preventive effect 78.45% compares, preventive effect exceeds 7.70%, 17.57%, 3.88%, 16.29%, 18.79%, 18.25% respectively, also raising in various degree is had than each single dose preventive effect, therefrom find out between CGA-173506 and the composite proportioning 1: 1～1: 4 of Tebuconazole, in identical total effective dose situation, field efficacy substantially processes high than other composite proportionings and each single dose.
Result of the test shows: CGA-173506 and Prochloraz built agent, compared with wherein each single preparation and comparison medicament, only once dispenser preventive effect all has and improves in various degree, especially between the composite proportioning 1: 1～1: 3 of CGA-173506 and Prochloraz, in identical total effective dose situation, field efficacy substantially processes high than other composite proportionings and each single dose, shows good potentiation.
Embodiment described above is only that the preferred embodiment of the present invention is described, and not the spirit and scope of the present invention is defined.Under the premise without departing from design concept of the present invention; various modification that technical scheme is made by this area ordinary person and improvement; protection scope of the present invention all should be dropped into, the technology contents that the present invention is claimed, all record in detail in the claims.
Claims (5)
1. a bactericidal composition, including compositions body, it is characterised in that: the active component of described compositions body is CGA-173506 and Prochloraz.
2. bactericidal composition according to claim 1, it is characterised in that: the CGA-173506 of described active component and the weight ratio of Prochloraz are 10: 1～1: 10, and the weight percentage that in described compositions body, active component is total is 10～70%.
3. bactericidal composition according to claim 2, it is characterised in that: the CGA-173506 of described active component and the weight ratio of Prochloraz are 6: 1～1: 6, and the weight percentage that in described compositions body, active component is total is 10～60%.
4. bactericidal composition according to claim 3, it is characterised in that: the CGA-173506 of described active component and the weight ratio of Prochloraz are 1: 1～1: 3, and the weight percentage that in compositions body, active component is total is 20～60%.
5. according to a described bactericidal composition in Claims 1-4, it is characterised in that: described compositions body can be the one in wettable powder, suspending agent, water dispersible granules.
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| CN201510109397.2A CN105707106A (en) | 2015-03-13 | 2015-03-13 | Bactericidal composition |
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| CN201510109397.2A CN105707106A (en) | 2015-03-13 | 2015-03-13 | Bactericidal composition |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106342867A (en) * | 2016-08-31 | 2017-01-25 | 江苏星源生物科技有限公司 | Bactericidal composite of rice sheath blight disease and application of bactericidal composite |
| CN108353922A (en) * | 2018-04-28 | 2018-08-03 | 海南省农业科学院植物保护研究所 | A kind of reddish yellow fiber crops composition pesticide, preparation and its application |
| CN110037046A (en) * | 2019-04-30 | 2019-07-23 | 广西大学 | A kind of pharmaceutical composition preventing and treating tomato wilt |
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| CN101232810A (en) * | 2005-06-30 | 2008-07-30 | 先正达参股股份有限公司 | Method of reducing mycotoxin contamination of the harvest |
| CN101263837A (en) * | 2008-04-22 | 2008-09-17 | 中国科学院华南植物园 | Composite antistaling agent for citrus shatangju |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106342867A (en) * | 2016-08-31 | 2017-01-25 | 江苏星源生物科技有限公司 | Bactericidal composite of rice sheath blight disease and application of bactericidal composite |
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| CN110037046A (en) * | 2019-04-30 | 2019-07-23 | 广西大学 | A kind of pharmaceutical composition preventing and treating tomato wilt |
| CN110037046B (en) * | 2019-04-30 | 2021-06-25 | 广西大学 | Pharmaceutical composition for preventing and treating tomato wilt |
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