CN102258040A - Sterilization composition containing pyraclostrobin and polyoxin - Google Patents
Sterilization composition containing pyraclostrobin and polyoxin Download PDFInfo
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- CN102258040A CN102258040A CN2010101953660A CN201010195366A CN102258040A CN 102258040 A CN102258040 A CN 102258040A CN 2010101953660 A CN2010101953660 A CN 2010101953660A CN 201010195366 A CN201010195366 A CN 201010195366A CN 102258040 A CN102258040 A CN 102258040A
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Abstract
The invention discloses a sterilization composition containing pyraclostrobin and polyoxin, its preparation method and its application. The sterilization composition is characterized in that pyraclostrobin, polyoxin and other auxiliary agents are contained, wherein, the weight ratio of pyraclostrobin to polyoxin is 60:1-1:20, and the sterilization composition can be used for preventing and controlling the diseases caused by a plurality of crop fungi. The invention has the advantages of safety and environmental protection, low cost and good effect. Field efficacy tests prove that the sterilization composition has the obvious synergistic effect, and the invention is provided against the backdrop that no reports related to compounding of pyraclostrobin and polyoxin are ever found at home and abroad.
Description
Technical field
The present invention relates to a kind of agricultural bactericidal composition, refer in particular to a kind of bactericidal composition and application thereof that contains pyraclostrobin and polyoxin.
Background technology
Use chemical agent to prevent and treat in agricultural production, producing resistance is inevitably, and has the research and development of the noval chemical compound of desinsection, bactericidal activity, and cost height, cycle are long, does not especially catch up with the speed of disease generation resistance.Adopting mechanism of action difference, composite two kinds of compounds with synergistic effect to carry out composite is to select preferably.
Pyraclostrobin
White is to oldlace crystalloid solid, and is tasteless.Density: 1.367g/cm3, fusing point 63.7-65.2 ℃. solvability (20 ℃, g/L): in the water 0.0019, normal heptane 3.7, toluene 570, carrene 570, methyl alcohol 100, acetone 650, ethyl acetate 650.Pyraclostrobin is the New-type wide-spectrum bactericide.The mechanism of action is the mitochondrial respiratory inhibitor, promptly by stoping electronics to shift in cytochrome b cl is synthetic.Have protection, treatment, blade infiltration conduction.Pyraclostrobin missible oil shows that through the field control effectiveness test result powdery mildew of cucumber, downy mildew and banana freckle, leaf spot are had the better prevention effect.The dosage of preventing and treating powdery mildew of cucumber, downy mildew is active ingredient 75～150g/hm
2(being converted into the missible oil commodity amount is 20-40mL/667m
2).In the their early stage even spraying, generally spray medicine 3～4 times behind the thin up, at interval 1 medicine of 7d spray.The active ingredient concentration of control banana freckle, leaf spot is 83.3-250mg/kg (extension rate is 1000-3000 times), begins spraying in their early stage, generally sprays medicine 3 times, at interval 1 medicine of 10d spray.Spray medicine number of times is decided on the state of an illness.To cucumber, banana safety, do not see that poisoning takes place.
Polyoxin:
The former medicine of polyoxin is an amorphous powder, fusing point＞160 ℃ (decomposition), solvability water 1kg/L (20 ℃), acetone, methyl alcohol and organic solvent＜100mg/L commonly used, the moisture absorption should be stored in airtight, the dry environment.The broad-spectrum antibiotics class, inhale conduction in having preferably, its mechanism of action is to disturb the chitinous biosynthesis of bacterial cell wall, and germ tube is with after mycelium contacts medicament, expand the part, break, overflow cell inclusion, and can not normal development, cause death, suppress germ in addition and produce spore and scab expansion effect, this medicine does not have toxicity to animal, and plant is not had poisoning.Main controlling object has wheat powdery mildew, Alternaria alternate, cucumber downy mildew, cucurbits fusarium wilt, genseng black spot, rice sheath blight disease, alternaria leaf spot of apple, strawberry and worker's grape grey mould, multiple fungal diseases such as forest spike top and pears black spot.
Summary of the invention
The objective of the invention is, overcome the defective that pyraclostrobin and the agent of polyoxin list produce resistance problem, a kind of bactericidal composition that contains pyraclostrobin and polyoxin that provides a kind of delaying drug resistance to produce, reduce consumption, improve the lasting period, reduce production costs.
Measure of the present invention realizes by following measures.
A kind of bactericidal composition, it contains pyraclostrobin and polyoxin, and wherein the weight ratio of pyraclostrobin and polyoxin is 60: 1～1: 20.
Described bactericidal composition, wherein the more excellent weight ratio of pyraclostrobin and polyoxin is 40: 1～1: 20.
Described bactericidal composition, wherein to account for the percentage of preparation total amount be 1.5～30.5% to the accumulating weight of pyraclostrobin and polyoxin.
Described bactericidal composition, pyraclostrobin and polyoxin and auxiliary agent, carrier etc. are processed into any one formulation that allows on the agricultural chemicals.
Described bactericidal composition is characterized in that the formulation that can be processed into is wetting powder, water dispersible granules.
The application of described bactericidal composition aspect the multiple diseases of control cereal class and fruit tree, melon, vegetables etc.
Specific embodiments of the present invention is as follows:
One of technical scheme of the present invention, described bactericidal composition are wetting powder, and the percentage by weight of component is:
Pyraclostrobin 1～30%
Polyoxin 0.5～20%
Dispersant 3～20%
Wetting agent 3～10%
Filler 10～70%
The concrete procedure of processing of this bactericidal composition wetting powder is: press above-mentioned prescription with pyraclostrobin and polyoxin and dispersant, wetting agent and filler mixing, in stirred tank, evenly stir, behind airslide disintegrating mill, mixing, promptly can be made into the wetting powder of the present composition.
Two of technical scheme of the present invention, described bactericidal composition are water dispersible granules, and the percentage by weight of component is:
Pyraclostrobin 1～30%
Polyoxin 0.5～20%
Dispersant 3～20%
Wetting agent 3～10%
Disintegrant 2～5%
Filler 10～70%
The concrete procedure of processing of this bactericidal composition water dispersible granules is: by above-mentioned prescription pyraclostrobin, polyoxin and dispersant, wetting agent, disintegrant and filler are mixed, pulverize with micro jet, through mediating, add then and carry out granulation, drying, screening in the fluidized bed prilling dryer after sample analysis makes the water dispersible granules that contains the bactericidal composition of pyraclostrobin and polyoxin of the present invention.
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 selected from: lauryl sodium sulfate, calcium dodecyl benzene sulfonate, Nekal BX., among the wetting and penetrating agent F, alkylnaphthalene sulfonate, polyoxyethylene triphenylethylene phosphenylic acid salt, spaonin powder, silkworm excrement, soapberry powder one or more.
Described disintegrant is selected from: one or more in bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, the sodium bicarbonate.
Described filler is selected from: one or more in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, the precipitated calcium carbonate.
The invention has the beneficial effects as follows:
1, two kinds of compound structures involved in the present invention, through evidence, being mixed mutually can not produce conflict, but Synergistic reduces dosage, reduces cost.And pyraclostrobin and polyoxin composite do not have report as yet.
2, the pathogen that produces resistance is still had very high drug effect, but suspension of pesticide resistance generation.
3, reduced the agricultural chemicals usage amount, strengthened friendly environment.
4, reduce the agricultural chemicals usage amount, also reduced drug cost, strengthened the market competitiveness of this prescription.
Embodiment: pyraclostrobin and polyoxin composite
Further the present invention is made an explanation by following examples, but scope of the present invention is not limited to following examples.
1 materials and methods
1.1 test material
1.1.1 reagent agent
The former medicine of 95% pyraclostrobin is produced by BASF AG; The former medicine of 34% polyoxin is produced by Shandong Keda Chuangye Biotechnology Co., Ltd.;
1.1.2 for the examination pathogen
With the sick leaf preparation of fresh cucumber cucumber germ sporangia suspension
1.2 test method and synergistic effect are measured
1.2.1 single agent toxicity test
1.2.1.1 soup preparation
The former medicinal dimethyl formamide of 95% pyraclostrobin (DMF) is a dissolution with solvents, be made into 1000 μ g/ml mother liquors, Tween solution with 0.1% Tween solution is diluted to 5～6 concentration gradients with mother liquor again, and polyoxin dissolves with sterile water, is diluted to 5～6 concentration gradients.
Adopt leaf dish floating method to measure the disease index and the relative control effect of the cucumber downy mildew of handling.
Be that the card punch of 1.5cm is beaten the cucumber leaves of health and got the leaf dish with diameter, 10 in every ware repeats for three times, and the leaf dish back side floats on the medicine of variable concentrations up in night.The bacterium of downy mildew of cucumber sporangia suspension of inoculation 10 μ l places illumination box to cultivate 6～8d on each leaf dish, carries out state of an illness investigation.Calculate disease index and preventive effect, obtain virulence regression equation and EC
50
On the basis of preliminary experiment, respectively single agent pyraclostrobin and polyoxin are carried out toxicity test in order to last method, the two EC
50Value is respectively 0.89mg/l and 1.34mg/l.
The percentage that accounts for the leaf disc area according to lesion area is divided sick level:
0 grade: scab
1 grade: lesion area accounts for 1%～20% of leaf disc area
2 grades: lesion area accounts for 21%～50% of leaf disc area
3 grades: what lesion area accounted for the leaf disc area uses the Wadley method more than 50%, estimates the synergistic effect of pharmacy mix according to coefficient of synergism (SR), and promptly SR＜1.0 are antagonism, and 1.0≤SR≤1.5 are summation action, and SR＞1.5 are synergistic effect.
EC
50Theoretical value=(a+b)/((a/EC
(A)+ b/EC
(B))
SR=EC
50Theoretical value/EC
50Measured value
In the formula: a, b are respectively the percentage composition of pyraclostrobin and polyoxin in the mixture;
EC
(A), EC
(B)Be respectively the EC of A and B
50Value.
Data see Table virulence and the synergistic effect of 1 different proportioning pyraclostrobin polyoxin mixtures to bacterium of downy mildew of cucumber
Combination is provided with 1.2.2 be mixed
20% pyraclostrobin polyoxin suspending agent mass ratio is respectively 2.86%+17.14%, 4%+16%, 6.67%+13.33%, 13.33%+6.67%, 16%+4% and 17.14%+2.86% totally 6 combinations that are mixed.
1.2.3 mixture toxicity test
Carry out the toxicity test of mixture according to mixed ratio with single agent toxicity test method.
EC that each that will measure according to the abundant method of Sun Yun handled
50Value is converted into the actual toxicity index (ATI) of using with; According to the proportioning of mixture, obtain theory and use toxicity index (TTI) with, calculate the co-toxicity coefficient (CTC) of mixture by following formula.
Single agent toxicity index=(standard medicament EC
50/ reagent agent EC
50) * 100
ATI=(standard medicament EC
50/ reagent agent (using with) EC
50) * 100
The content (%) of toxicity index * B in using with of content (the %)+B of toxicity index * A of TII=A in using with
CTC=(ATI/TTI) * 100 is if co-toxicity coefficient is big by 120, and showing has synergistic effect; If be starkly lower than 100 (below 80), be indicated as antagonism; Between 100～120, be indicated as summation action
Data see Table 1
The different proportioning pyraclostrobin of table 1 polyoxin mixture is to the virulence and the synergistic effect of bacterium of downy mildew of cucumber
The composite co-toxicity of table 2 pyraclostrobin polyoxin to bacterium of downy mildew of cucumber
2 results and analysis
According to bactericide joint toxicity measuring result, pyraclostrobin and polyoxin mass ratio are that 1: 4 o'clock co-toxicity coefficient is 132.5, show as synergistic effect, and all the other show as summation action, so think that the best proportioning of pyraclostrobin and polyoxin is 1: 4.
3 field trials are measured the control efficiency to cucumber downy mildew and downy mildew of garpe
3.1 field trial is measured the control efficiency to cucumber downy mildew
3.1.1 application method
Test is total to dispenser 3 times, check plot spray equivalent clear water.When making up a prescription, after with low amounts of water medicament fully being dissolved earlier, add suitable quantity of water again and carry out complete stool spraying processing, even spraying.Adopt power driven sprayer during the spray medicine, operating pressure is 2.0～2.3kg/cm
2, shower nozzle aperture 1.2mm.The sub-district spouting liquid is used by 675 liters/hectare, and soup is sprayed application to the positive and negative two sides of cucumber leaf uniformly, and not dripping with desire is the best.
3.1.2 investigation method
Experimental field be located in the greenhouse by solar heat of Shouguang, cucumber variety is Tianjin spring No. 2, is clayey soil, and middle fertility is well-managed.
Every sub-district is 4 samplings at random, fix 2 strain cucumber at every, amount to 8 strains, and whole blades are investigated in every strain, and a situation arises for the statistics disease.
Every leaf writes down total number of sheets, the sick number of sheets at different levels by the percentage classification that scab accounts for leaf area, calculates the blade incidence of disease, disease index, refers to comparison with the contrast disease, calculates relative control effect.
State of an illness grade scale (is unit with the blade)
Sick level victimization state
0 grade: no scab;
1 grade: lesion area accounts for below 5% of whole leaf area;
3 grades: lesion area accounts for 6%～10% of whole leaf area;
5 grades: lesion area accounts for 11%～25% of whole leaf area;
7 grades: lesion area accounts for 26%～50% of whole leaf area;
9 grades: lesion area accounts for more than 50% of whole leaf area;
3.1.3 control time and number of times
Test is investigated 4 times altogether, respectively investigates 1 time in 10 days behind 7 days, the 3rd time medicine behind 7 days, the 2nd time medicine before the medicine, behind the 1st medicine.
3.1.4 drug effect computational methods
Sick leaf rate (the %)=sick number of sheets/investigate total number of sheets * 100
Disease index=∑ (the sick numbers of sheets at different levels * relative level numerical value)/(investigating total number of sheets * 9) * 100
Control efficiency (%)=(1-(disease index behind disease index before the blank district medicine * treatment region medicine)/(disease index before disease index behind the blank district medicine * treatment region medicine)) * 100
3.1.5 poisoning investigation method
Whether continuous 7d range estimation medicament has poisoning to crop after the dispenser.
3.1.6 result of the test and analysis
Each effect of handling the control cucumber downy mildew sees Table 3
Each handles the effect of control cucumber downy mildew table 3
Interpretation of result:
As can be seen from Table 3, the effect of 1: 4 the combination control cucumber downy mildew that is mixed of 20% pyraclostrobin polyoxin is very remarkable.The evidence complex preparation significantly is better than effect under the low concentration consumption in control efficiency under the consumption of high concentration.10 days the highest preventive effect can reach about 84% behind the 3rd medicine under the consumption of every mu 20 gram.And the preventive effect of agent of pyraclostrobin list and polyoxin respectively about 77% and 79% significantly inferior to complex preparation.The quick-acting of complex preparation and lasting effect are all more outstanding, are the medicament of desirable control cucumber downy mildew.Duration of test is observed, and it does not produce harmful effect to cucumber safety.
3.2 field trial is measured the control efficiency to downy mildew of garpe
3.2.1 application method
Test is total to dispenser 3 times, check plot spray equivalent clear water.When making up a prescription, after with low amounts of water medicament fully being dissolved earlier, add suitable quantity of water again and carry out complete stool spraying processing, even spraying.Adopt power driven sprayer during the spray medicine, operating pressure is 2.0～2.3kg/cm
2, shower nozzle aperture 1.2mm.The sub-district spouting liquid is used by 675 liters/hectare, and soup is sprayed application to the positive and negative two sides of crop leaf uniformly, and not dripping with desire is the best.
3.1.2 investigation method
Every sub-district is 4 samplings at random, fix 2 strain grapes at every, amount to 8 strains, and whole blades are investigated in every strain, and a situation arises for the statistics disease.
Every leaf writes down total number of sheets, the sick number of sheets at different levels by the percentage classification that scab accounts for leaf area, calculates the blade incidence of disease, disease index, refers to comparison with the contrast disease, calculates relative control effect.
State of an illness grade scale (is unit with the blade)
Sick level victimization state
0 grade: no scab;
1 grade: lesion area accounts for below 5% of whole leaf area;
3 grades: lesion area accounts for 6%～10% of whole leaf area;
5 grades: lesion area accounts for 11%～25% of whole leaf area;
7 grades: lesion area accounts for 26%～50% of whole leaf area;
9 grades: lesion area accounts for more than 50% of whole leaf area;
3.1.3 control time and number of times
Test is investigated 4 times altogether, respectively investigates 1 time in 10 days behind 7 days, the 3rd time medicine behind 7 days, the 2nd time medicine before the medicine, behind the 1st medicine.
3.1.4 drug effect computational methods
Diseased plant rate (the %)=total strain number of diseased plant number/investigation * 100
Disease index=∑ (diseased plant numbers at different levels * relative level numerical value)/(investigating total strain number * 9) * 100
Control efficiency (%)=(1-(disease index behind disease index before the blank district medicine * treatment region medicine)/(disease index before disease index behind the blank district medicine * treatment region medicine)) * 100
3.1.5 poisoning investigation method
Security survey: behind medicine 7,14, the dispenser of 21d visual observations is to the situation that influences of trial crops growth, leaf look etc., investigates the safety of medicament to the trial crops plant.
Write down the poisoning situation of every sub-district according to the poisoning stage division, with-,+, ++, +++, ++ ++ expression.The poisoning stage division:
-: no poisoning.
+: slight poisoning does not influence the crop normal growth.
++: the moderate poisoning, can restore, can not cause crop failure.
The poisoning of +++: severe influences the crop normal growth, and crop yield and quality are caused to a certain degree loss.
++ ++: serious poisoning, plant growth is obstructed, and output and mass loss are serious.
3.1.6 result of the test and analysis
Each is handled the effect of preventing and treating downy mildew of garpe and sees Table 4
Each handles the effect of preventing and treating downy mildew of garpe table 4
Interpretation of result:
As can be seen from Table 4, to prevent and treat the effect of downy mildew of garpe very remarkable in the combination that is mixed of 20% pyraclostrobin polyoxin 1: 4.The evidence complex preparation significantly is better than effect under the low concentration consumption in control efficiency under the consumption of high concentration.10 days the highest preventive effect can reach about 83% behind the 3rd medicine under the consumption of every mu 20 gram.And the preventive effect of agent of pyraclostrobin list and polyoxin respectively about 76% and 79% significantly inferior to complex preparation.Duration of test is observed, and it does not produce harmful effect to grape safety.
In sum, the present invention contains pyraclostrobin and polyoxin gets the sterilization combination, cucumber downy mildew and downy mildew of garpe bacterium are all had good control efficiency, and it is to the target crop safety.Compare with single agent, it is long that bactericidal composition of the present invention has the lasting period, easy to use, and environmental pollution is few, is difficult for producing the advantage of poisoning.Be applicable to the plurality of plant diseases that disease funguses such as control oomycetes, sac fungi, basidiomycetes, imperfect fungus cause.By composite, improve bactericidal activity, enlarge fungicidal spectrum, widen the scope of application, reduce cost, multiple diseases is played the double effect of controlling of a medicine, alleviate manpower and materials, improve productivity effect.So the invention of this complex preparation has crucial meaning with popularization to society.
Claims (5)
1. bactericidal composition, it is characterized in that: contain two kinds of active components of pyraclostrobin and polyoxin, wherein the weight ratio of pyraclostrobin and polyoxin is 60: 1～1: 20.
2. bactericidal composition according to claim 1 is characterized in that: the more excellent weight ratio of pyraclostrobin and polyoxin is 40: 1～1: 20.
3. bactericidal composition according to claim 1 is characterized in that: the percentage by weight that pyraclostrobin and polyoxin are accumulated shared preparation is 1.5～30.5%.
4. bactericidal composition according to claim 1 is characterized in that: pyraclostrobin and polyoxin and auxiliary agent and cosolvent are re-dubbed any one formulation that allows on the agricultural chemicals.
5. bactericidal composition according to claim 1 is characterized in that: the formulation that can be processed into is formulations such as wetting powder and water dispersible granules.
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|---|---|---|---|
| CN2010101953660A CN102258040A (en) | 2010-05-27 | 2010-05-27 | Sterilization composition containing pyraclostrobin and polyoxin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103891743A (en) * | 2012-12-31 | 2014-07-02 | 江苏丰登农药有限公司 | Bactericidal composition containing isopyrazam and pyraclostrobin and application thereof |
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|---|---|---|---|---|
| US3700655A (en) * | 1964-09-24 | 1972-10-24 | Rikagaku Kenkyusho | Antibiotics of agricultural fungicides,polyoxins a and b;and process for preparing the same |
| CN101248793A (en) * | 2008-03-12 | 2008-08-27 | 王英姿 | Bactericial composition containing pyrazole aether bacterium ester and multiple anti-teichomycin and uses thereof |
-
2010
- 2010-05-27 CN CN2010101953660A patent/CN102258040A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3700655A (en) * | 1964-09-24 | 1972-10-24 | Rikagaku Kenkyusho | Antibiotics of agricultural fungicides,polyoxins a and b;and process for preparing the same |
| CN101248793A (en) * | 2008-03-12 | 2008-08-27 | 王英姿 | Bactericial composition containing pyrazole aether bacterium ester and multiple anti-teichomycin and uses thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《J. Environ. Hort.》 20090930 Michael A. Fidanza et al In Vitro Screening of Fungicides to Control Artillery Fungi 第155-158页 1-5 第27卷, 第3期 * |
| MICHAEL A. FIDANZA ET AL: "In Vitro Screening of Fungicides to Control Artillery Fungi", 《J. ENVIRON. HORT.》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103891743A (en) * | 2012-12-31 | 2014-07-02 | 江苏丰登农药有限公司 | Bactericidal composition containing isopyrazam and pyraclostrobin and application thereof |
| CN103891743B (en) * | 2012-12-31 | 2015-06-17 | 江苏丰登作物保护股份有限公司 | Bactericidal composition containing isopyrazam and pyraclostrobin and application thereof |
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Application publication date: 20111130 |