CN101755759A - Fungicidal composition containing dithianon and azoxystrobin - Google Patents

Fungicidal composition containing dithianon and azoxystrobin Download PDF

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CN101755759A
CN101755759A CN200910218525A CN200910218525A CN101755759A CN 101755759 A CN101755759 A CN 101755759A CN 200910218525 A CN200910218525 A CN 200910218525A CN 200910218525 A CN200910218525 A CN 200910218525A CN 101755759 A CN101755759 A CN 101755759A
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dithianon
fluoxastrobin
composition
azoxystrobin
bactericidal composition
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张秋芳
常新红
曹巧利
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Shanxi Thompson Biological Technology Co Ltd
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Shanxi Thompson Biological Technology Co Ltd
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Abstract

The invention relates to a fungicidal composition, the active components of which contain dithianon and azoxystrobin, wherein the weight percentage ratio between the dithianon and the azoxystrobin is 5 to 60:40 to 1. The composition is used to control various diseases on vegetables, particularly vegetable anthracnose, downy mildew and powdery mildew, the control effect of the composition is notably better than the use effect of units thereof, and moreover, the composition can effectively delay the formation of the resistance of diseases.

Description

A kind of bactericidal composition that contains dithianon and Fluoxastrobin
Technical field:
The invention belongs to technical field of pesticide, relate to a kind of application of bactericide on vegetable disease that contains dithianon and azoxystrobin compound.
Technical background:
Dithianon (dithianon) is the bactericide of BASF European Co.,Ltd's exploitation, and pure product are dark-brown crystalloid solid.Molecular formula is C 14H 4N 2O 2S 2, chemical name is: 2, and 3-dinitrile-1, the 4-anthraquinone dithio, structural formula is:
Figure G2009102185251D00011
Dithianon has multiaction mechanism, and to suppress a series of fungies mould by breathing with sulfur-containing group reaction and interference cell, causes disease death at last, when tool is well protected activity, certain therapeutic activity arranged also.Be used to prevent and treat all fruit diseases such as scab, mildew disease, leaf spot, rust, anthracnose, downy mildew, brown rot.
Fluoxastrobin (azoxystrobin) is the heterocyclic nitrogen-group fungicide of Britain ICI company exploitation.Molecular formula: C 24H 17N 3O 5, chemical name: (E)-2-{2-[6 (2-cyano-benzene oxygen) pyrimidine-4-base oxygen] phenyl }-the 3-methoxy acrylate.
Fluoxastrobin belongs to the mitochondrial respiratory inhibitor, promptly passes through to shift to the electronics of cromoci at cytochrome B cl, thereby suppresses mitochondrial breathing.The bacterial strain that 14-demethylation enzyme inhibitor, benzamides, dicarboxylic dihydrazides amine and benzimidazole is produced resistance is effective.Have protection, root out, infiltration, systemic activity.Suppress spore germination and mycelial growth and produce spore always, nearly all mycota (Ascomycotina, Basidiomycotina, Mastigomycotina and Deuteromycotina) disease such as powdery mildew, rust, glume blight, net blotch, downy mildew, rice blast etc. are all had good activity.Can be used for cauline leaf spraying, seed treatment, also can carry out soil treatment, be mainly used in cereal, paddy rice, peanut, grape, potato, fruit tree, vegetables, coffee, lawn etc.Do not considering under the drug-fast prerequisite of disease fungus that the more present widely used metalaxyl of drug effect, white urea cyanogen, the spirit of aliette, Evil frost etc. are higher.Have than higher resistance risk but use separately, the former medicine existing market of Fluoxastrobin price is higher, can reduce cost with other protective fungicides are composite, and better suspension of pesticide resistance generation becomes the important means of integrated control disease.
Have not yet to see the relevant report of dithianon and azoxystrobin compound product.
Summary of the invention
The problem serious at present disease drug resistance, that use cost is high, our company has researched and developed a kind of low cost, efficient, the safe bactericidal composition that contains dithianon and Fluoxastrobin.
The present invention is achieved through the following technical solutions:
The bactericidal composition that contains dithianon and Fluoxastrobin, dithianon and Fluoxastrobin percentage by weight are 5～60: 40～1.
The bactericidal composition that contains dithianon and Fluoxastrobin, dithianon and Fluoxastrobin percentage by weight are 10～50: 30～5.
The bactericidal composition that contains dithianon and Fluoxastrobin, dithianon and Fluoxastrobin percentage by weight are 10～40: 20～10.
Described bactericidal composition adds conventional auxiliary agent and excipients, makes wetting powder, water dispersible granules, suspending agent by the technical method that those skilled in the art all know.
When making wetting powder, composition comprises following constituent content: dithianon 5～60%, Fluoxastrobin 1～40%, dispersant 3～15%, wetting agent 3～12%, filler 4～80%.
Above-mentioned formulation material is mixed, in mixed cylinder, mix, after airslide disintegrating mill is pulverized, mix again, promptly can be made into dithianon Fluoxastrobin wetting powder product.
When making water dispersible granules, composition comprises following constituent content: dithianon 5～60%, Fluoxastrobin 1～40%, dispersant 3～12%, wetting agent 2～8%, disintegrant 1～8%, binding agent 0.1～5%, filler 10～80%.
Former medicine is obtained the particle diameter that needs with dispersant, wetting agent, disintegrant, filler etc. through comminution by gas stream, add other auxiliary agents such as adhesive again, obtain the materials of granulating.It is interior through after granulation and the drying to expect that product are quantitatively sent the fluidized bed granulation dryer to, makes dithianon azoxystrobin water dispersible granule product.
Comprise following constituent content when composition is made suspending agent: dithianon 5～40%, Fluoxastrobin 5～20%, dispersant 3～12%, wetting agent 2～10%, defoamer 0.01～0.5%, thickener 0.01～2%, antifreeze 1～10%, deionized water add to 100%.
Dispersant in the above-mentioned formulation material, wetting agent, defoamer, thickener, antifreeze are mixed through high speed shear, add former medicine, ball milling is 2～3 hours in ball mill, makes particle diameter all below 5 μ m, makes dithianon Fluoxastrobin suspending agent product.
Described dispersant is selected from one or more in polycarboxylate, lignosulfonates, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, polyoxyethylene carboxylate, the fatty acid glyceride APEO.
Described wetting agent is natural products wetting agent and cationic wetting agent, and available tea is withered, spaonin powder, silkworm excrement, soapberry powder, bay alcohol radical sodium sulphate, lauryl sodium sulfate, neopelex, washing powder, draw back in the powder one or more.
Described disintegrant is selected from one or more in bentonite, ammonium sulfate, calcium chloride, urea, magnesium chloride, aluminium chloride, citric acid, succinic acid, the carbonic hydroammonium.
Described defoamer is selected from one or more in silicone oil, silicone compound, C10-20 saturated fat acid compounds, the C8-10 aliphatic alcohols compound.
Described antifreeze is selected from: one or more in ethylene glycol, propane diols, the glycerine.
Described binding agent is selected from: one or more in gum Arabic, white dextrin, carboxy-propyl cellulose, xanthan gum, methylcellulose, PAA, polyvinylpyrrolidone, crospolyvinylpyrrolidone, polyethylene glycol, polyvinyl alcohol, anhydrous succinic acid-styrene copolymerized, the polyvinyl acetate.
Described thickener is selected from: one or more in xanthans, CMC, hydroxyethylcellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol, the polyethylene glycol.
Described filler is selected from: one or more on kaolin, diatomite, bentonite, the concavo-convex rod, in the white carbon, starch, precipitated calcium carbonate.
Described bactericidal composition is used to prevent and treat vegetables anthracnose, downy mildew, powdery mildew.
The advantage of bactericidal composition of the present invention: being used in combination of (1) two kind of bactericide, enlarged fungicidal spectrum, delayed the generation of disease drug resistance; (2) not with an organic solvent, to target crop, people and animals, Environmental security; (3) reduce formulation rate, reduce application times, easy to use, reduced cost, have advantage efficient, quick-acting, that the lasting period is long.
Embodiment
To further instruction of the present invention, but the present invention is not limited thereto below in conjunction with embodiment.
Embodiments of the invention are the methods that adopt indoor bioassay and field trial to combine.By indoor bioassay, the synergy ratio after clear and definite two kinds of medicaments are composite by a certain percentage on this basis, is carrying out field trial earlier.
Embodiment 1 40% dithianon Fluoxastrobin wetting powder
The former medicine 30% of dithianon, Fluoxastrobin 10%, neopelex 4%, alkylphenol polyoxyethylene 8%, white carbon 8%, diatomite 20%, kaolin 20%, mixture carries out comminution by gas stream, makes 40% dithianon Fluoxastrobin wetting powder.
Embodiment 2 60% dithianon Fluoxastrobin wetting powders
The former medicine 40% of dithianon, Fluoxastrobin 20%, soapberry powder 4%, polycarboxylate 10%, white carbon 10%, bentonite 16%, mixture carries out comminution by gas stream, makes 60% dithianon Fluoxastrobin wetting powder.
Embodiment 3 80% dithianon Fluoxastrobin wetting powders
The former medicine 45% of dithianon, Fluoxastrobin 35%, spaonin powder 6%, polyoxyethylene carboxylate 4%, white carbon 10%, mixture carries out comminution by gas stream, makes 80% dithianon Fluoxastrobin wetting powder.
Embodiment 4 45% dithianon azoxystrobin water dispersible granules
The former medicine 30% of dithianon, Fluoxastrobin 15%, sodium lignin sulfonate 5%, draw back powder 4%, ammonium sulfate 4%, tributyl phosphate 1.5%, polyethylene glycol 0.5%, kaolin 10%, starch 8%, attapulgite 22%.Make 45% dithianon azoxystrobin water dispersible granule.
Embodiment 5 65% dithianon azoxystrobin water dispersible granules
The former medicine 45% of dithianon, Fluoxastrobin 20%, naphthalene sulfonic acid-formaldehyde condensation product sodium salt 8%, tea are withered 4%, calcium chloride 4%, tributyl phosphate 1.5%, xanthogenic acid glue 0.8%, starch 16.7%.Make 65% dithianon azoxystrobin water dispersible granule.
Embodiment 6 80% dithianon azoxystrobin water dispersible granules
The former medicine 55% of dithianon, Fluoxastrobin 25%, polycarboxylate 3%, alkyl benzene sulfonate calcium salt 3%, washing powder 3%, succinic acid 4%, crospolyvinylpyrrolidone 0.2%, aluminium-magnesium silicate 0.8%, starch 6%, the mixed 80% dithianon azoxystrobin water dispersible granule that gets.
Embodiment 7 20% dithianon Fluoxastrobin suspending agents
The former medicine 15% of dithianon, Fluoxastrobin 5%, naphthalene sulfonic acid-formaldehyde condensation product sodium salt 2%, defoamer 0.02%, gum Arabic 0.2%, ethylene glycol 4%, deionized water add to 100%, the mixed 20% dithianon Fluoxastrobin suspending agent that gets.
Embodiment 8 35% dithianon Fluoxastrobin suspending agents
The former medicine 25% of dithianon, Fluoxastrobin 10%, polyoxyethylene carboxylate 5%, defoamer 0.02%, xanthans 0.1%, aluminium-magnesium silicate 0.8%, propane diols 3%, deionized water add to 100%, the mixed 35% dithianon Fluoxastrobin suspending agent that gets.
Embodiment 9 50% dithianon Fluoxastrobin suspending agents
The former medicine 40% of dithianon, Fluoxastrobin 10%, sodium lignin sulfonate 3%, defoamer 0.02%, polyvinylpyrrolidone 0.2%, glycerine 4%, water add to 100%, the mixed 50% dithianon Fluoxastrobin suspending agent that gets.
Implementation of an application example one: dithianon and Fluoxastrobin are mixed to the cucumber anthracnose Toxicity Determination
Reagent agent: provide by Shanxi Thompson Biological Technology Co., Ltd..
Experimental establishment designs 5 concentration of treatment at Pucheng County, Shaanxi Province plant protection unit respectively with each active constituent content of test medicine, is contrast with the space management, and the inhibitory action of cucumber anthracnose is carried out indoor measurement.The mycelial growth rate method is adopted in test, earlier each proportioning is become the series concentration gradient.The aseptic card punch that will the anthracnose germ after secondary separation is cultivated with diameter be 0.5CM is standby in the punching of blade inlet edge place, moves then on pastille PDA plating medium, places in 25 ± 1 ℃ of incubators and cultivates, and cultivates and measures colony diameter after 6 days.Every processing repeats 6 times.Measured result is calculated antibacterial percentage compared with the control.5 proportionings are carried out synergism test by the synergism test method.Computing formula is as follows:
Clean amount of growth (mm)=measurement colony diameter-5
Figure G2009102185251D00071
Mycelial growth inhibition rate is converted into probit value (y), and liquor strength (μ g/mL) converts logarithm value (x) to, tries to achieve virulence regression equation (y=a+bx) with method of least squares, and calculates the EC of every kind of medicament thus 50Value.Calculate the different proportioning synergy ratios (SR) of two medicaments according to the Wadley method simultaneously, SR＜0.5 is an antagonism, and 0.5≤SR≤1.5 are summation action, and SR＞1.5 are synergistic effect.Computing formula is as follows:
Figure G2009102185251D00072
Figure G2009102185251D00073
Wherein: a, b are respectively dithianon and Fluoxastrobin shared ratio in combination;
A is a dithianon;
B is a Fluoxastrobin;
The virulence regression equation of the dithianon that is obtained, Fluoxastrobin and composite comparison cucumber anthracnose, suppress in concentration and synergy ratio (SR) as following table:
Table 1 dithianon, Fluoxastrobin and composite to the cucumber anthracnose Toxicity Determination
As shown in Table 1, dithianon of the present invention and azoxystrobin compound, to the cucumber anthracnose Toxicity Determination, when dithianon and Fluoxastrobin proportioning are that 1: 3,1: 1,3: 1,5: 1,7: 1 synergy ratio is respectively 1.56,1.63,2.07,1.74,1.60, all show as synergistic effect, with dithianon: Fluoxastrobin=synergistic effect in 3: 1 is the most obvious.
Implementation of an application example two: the dithianon Fluoxastrobin control Chinese cabbage downy mildew test of pesticide effectiveness
Reagent agent: dithianon azoxystrobin compound product is provided by Shanxi Thompson Biological Technology Co., Ltd.; Contrast medicament 75% dithianon wetting powder (commercial), 25% Fluoxastrobin suspending agent (commercial).
This experimental establishment is located at Shahe village, north, Taigu County marquis town and country one plastic greenhouse, experimental field is the sandy loam quality, the growing way homogeneous, and Chinese cabbage downy mildew takes place heavier.
Tested November 26, December 3, December 10 and carry out, sub-district inner opposite angle line five-spot sampling survey, every 3 strain, every sub-district is totally 15 strains, and every strain Chinese cabbage is got five leaf investigation from top to bottom.Investigate the state of an illness more respectively in seven days behind seven days, three times medicines behind the investigation state of an illness radix before the dispenser, seven big behind the medicine, secondary medicine, calculate disease index and control efficiency.Observe the safety of medicament to Chinese cabbage.
0 grade: anosis
1 grade: lesion area accounts for whole leaf area below 5%;
3 grades: lesion area accounts for whole leaf area 6%～15%;
5 grades: lesion area accounts for whole leaf area 16%～25%;
7 grades: lesion area accounts for whole leaf area 26%～50%;
9 grades: lesion area accounts for whole leaf area more than 50%;
Computational methods:
Figure G2009102185251D00091
Figure G2009102185251D00092
In the formula: Ck 0For the disease of clear water check plot before the medicine refers to; Pt 0For the disease of medicament treatment region before the medicine refers to; Ck 1For the disease of clear water check plot behind the medicine refers to; Pt 1For the disease in chemicals treatment district behind the medicine refers to.
It is as follows that dithianon azoxystrobin composite of the present invention is prevented and treated result of the test in the field to Chinese cabbage downy mildew:
Table 2 dithianon, Fluoxastrobin and composite control Chinese cabbage downy mildew field control effectiveness test thereof
Figure G2009102185251D00093
Figure G2009102185251D00101
Find out that by table 2 seven days average preventive effect is respectively 92.46%～94.82% after the last dispenser of 3 processing of the present invention; Preventive effect is respectively 74.31%, 64.90% after contrast medicament 75% dithianon wetting powder, the 25% Fluoxastrobin suspending agent last dispenser.Statistical results show pharmacy control efficacy of the present invention is better than contrasting medicament, and Chinese cabbage downy mildew is had remarkable prevention effect, and to crop safety, Chinese cabbage anthracnose is had certain preventive effect.
Implementation of an application example three: the dithianon Fluoxastrobin is prevented and treated the powdery mildew of cucumber test of pesticide effectiveness
This test arrangement experimental field is the level land in Changan District Hou Jiawan village, Xian City, Shanxi Province, the medium generation of powdery mildew of cucumber.
Reagent agent: dithianon azoxystrobin compound product is provided by Shanxi Thompson Biological Technology Co., Ltd.; Contrast medicament 75% dithianon wetting powder (commercial), 25% Fluoxastrobin suspending agent (commercial).
Spraying time: May 16 with sharp agricultural HD-400 type sprayer to the leave dual sides even spraying once, sprayed for the second time May 26 at the powdery mildew of cucumber initial stage of origination.Investigation state of an illness radix, total number of sheets, the sick number of sheets and sick leaf-size class number before the medicine, and with the dispenser second time before and carried out the preventive effect investigation for the second time behind the medicine in 10 days.5 strains of every sub-district, every strain are looked into 10 from top to bottom and are launched leaf fully, and the total number of sheets of record Chinese cabbage, the sick number of sheets and sick leaf index calculate disease index and proofread and correct preventive effect.
Computing formula:
Figure G2009102185251D00102
Figure G2009102185251D00103
In the formula: Ck 0For the disease of clear water check plot before the medicine refers to; Pt 0For the disease of medicament treatment region before the medicine refers to; Ck 1For the disease of clear water check plot behind the medicine refers to; Pt 1For the disease in chemicals treatment district behind the medicine refers to.
Reagent agent is to powdery mildew of cucumber field control effectiveness test result:
Table 3 dithianon, Fluoxastrobin and the composite powdery mildew of cucumber field control effectiveness test of preventing and treating thereof
Figure G2009102185251D00111
Experimental result shows, the dithianon Fluoxastrobin product that is mixed has the better prevention effect to powdery mildew of cucumber, and 10 days preventive effect reaches 94.52%～97.02% behind the medicine for the second time, can effectively control the generation of powdery mildew of cucumber, and preventive effect all is better than contrasting medicament.In this trial stretch to cucumber safety.
Implementation of an application example four: the dithianon Fluoxastrobin control pepper anthracnose test of pesticide effectiveness
This test arrangement experimental field is the level land in Changan District Hou Jiawan village, Xian City, Shanxi Province, the medium generation of pepper anthracnose.
Reagent agent: dithianon azoxystrobin compound product is provided by Shanxi Thompson Biological Technology Co., Ltd.; Contrast medicament 22.7% dithianon suspending agent (commercial), 25% Fluoxastrobin suspending agent (commercial).
Spraying time: May 20 is at the pepper anthracnose initial stage of origination, dispenser in per 10 days once is total to dispenser twice, investigation state of an illness radix, total number of sheets, the sick number of sheets and sick leaf-size class number before the medicine, and with the dispenser second time before and for the second time carried out the preventive effect investigation in 10 days behind the medicine, calculate disease index and proofread and correct preventive effect.
Computing formula:
Figure G2009102185251D00121
In the formula: Ck 0For the disease of clear water check plot before the medicine refers to; Pt 0For the disease of medicament treatment region before the medicine refers to; Ck 1For the disease of clear water check plot behind the medicine refers to; Pt 1For the disease in chemicals treatment district behind the medicine refers to.
Reagent agent is to pepper anthracnose field control effectiveness test result:
Table 4 dithianon, Fluoxastrobin and composite control pepper anthracnose field control effectiveness test thereof
Figure G2009102185251D00123
Experimental result shows, the dithianon Fluoxastrobin product that is mixed has the better prevention effect to pepper anthracnose, and 10 days preventive effect reaches 93.46%～96.35% behind the medicine for the second time, can effectively control the generation of pepper anthracnose, and preventive effect all is better than contrasting medicament.In this trial stretch to capsicum safety.
In sum, the bactericidal composition of dithianon and azoxystrobin compound has that a medicine is controlled more,, advantage that lasting period long good to crop safety, quick-acting, compares with single dose, has enlarged fungicidal spectrum, has reduced the medication number of times, provides cost savings. So R﹠D and promotion tool of the present invention is of great significance.

Claims (6)

1. bactericidal composition that contains dithianon, it is characterized in that: composition contains dithianon and Fluoxastrobin, and wherein dithianon and Fluoxastrobin percentage by weight are 5～60: 40～1.
2. the bactericidal composition that contains dithianon according to claim 1 is characterized in that: dithianon and Fluoxastrobin percentage by weight are 10～50: 30～5.
3. the bactericidal composition that contains dithianon according to claim 2 is characterized in that: dithianon and Fluoxastrobin percentage by weight are 10～40: 20～10.
4. the bactericidal composition that contains dithianon according to claim 1 is characterized in that: composition adds conventional auxiliary agent and excipients, makes wetting powder, water dispersible granules, suspending agent by the technical method that those skilled in the art all know.
5. the bactericidal composition that contains dithianon according to claim 1 is characterized in that the effective active component content is 10%～80%.
6. the bactericidal composition that contains dithianon according to claim 1 is characterized in that: composition is used to prevent and treat vegetables anthracnose, downy mildew, powdery mildew.
CN200910218525A 2009-10-26 2009-10-26 Fungicidal composition containing dithianon and azoxystrobin Pending CN101755759A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102057908A (en) * 2010-12-26 2011-05-18 陕西韦尔奇作物保护有限公司 Bactericidal composite containing dithianon and methoxy acrylic esters
CN104604863A (en) * 2012-09-13 2015-05-13 陕西美邦农药有限公司 Dimoxystrobin-contained bactericidal composition
CN107467028A (en) * 2017-08-23 2017-12-15 山东省果树研究所 A kind of bactericidal composition and its application containing SYP-3375 and dithianon

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102057908A (en) * 2010-12-26 2011-05-18 陕西韦尔奇作物保护有限公司 Bactericidal composite containing dithianon and methoxy acrylic esters
CN102057908B (en) * 2010-12-26 2013-08-14 陕西韦尔奇作物保护有限公司 Bactericidal composite containing dithianon and methoxy acrylic esters
CN104604863A (en) * 2012-09-13 2015-05-13 陕西美邦农药有限公司 Dimoxystrobin-contained bactericidal composition
CN107467028A (en) * 2017-08-23 2017-12-15 山东省果树研究所 A kind of bactericidal composition and its application containing SYP-3375 and dithianon

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Application publication date: 20100630