CN103918679A - Bactericidal composition containing thifluzamide and procymidone - Google Patents
Bactericidal composition containing thifluzamide and procymidone Download PDFInfo
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- CN103918679A CN103918679A CN201410124329.9A CN201410124329A CN103918679A CN 103918679 A CN103918679 A CN 103918679A CN 201410124329 A CN201410124329 A CN 201410124329A CN 103918679 A CN103918679 A CN 103918679A
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Abstract
The invention discloses a bactericidal composition containing thifluzamide and procymidone. The bactericidal composition comprises active ingredients, namely thifluzamide and procymidone which are compounded, and the balance being auxiliary ingredients, wherein a mass ratio of thifluzamide to procymidone in the pesticide composition is (1-50):(50-1); the mass part ratio of the active ingredients, namely thifluzamide to procymidone, in the preparation is 1-80 percent, and the auxiliary ingredients are pesticidally permitted and acceptable. The bactericidal composition has the dosage forms such as missible oil, suspending agent, wettable powder, water dispersible granules, emulsion in water, microemulsion, granules, microcapsules and soluble concentrate and is mainly used for preventing and treating diseases, such as banded sclerotial blight and damping off, caused by basidiomycetes fungi and gray mold and stalk break of fruit trees, vegetables and crops.
Description
Technical field
The present invention relates to agriculture chemical compounding technical field, particularly relate to a kind of bactericidal composition that contains thifluzamide and procymidone.
Background technology
Thifluzamide belongs to thiazole amide bactericide, its chemistry 2' by name, the bromo-2-methyl-4'-of 6'-bis-trifluoromethoxy-4-Trifluoromethyl-1,3-thiadiazoles-5-hydroxyl anilide.Thifluzamide has strong interior conductivity and the long lasting effect of inhaling.Thifluzamide all has activity to pathomycetes such as Rhizoctonia, Puccinia, Ustilago, Tilletia, corticium, nuclear cavity Pseudomonas, especially the fungus-caused disease of Basidiomycetes is had to special efficacy as banded sclerotial blight, damping off etc.
Procymidone is new type bactericide, belongs to hypotoxicity bactericide, its chemistry N-(3 by name; 5-dichlorophenyl)-1,2-dimethylcyclopropane-1,2-diformyl imines; procymidone is mainly suppress the interior triglycerides of thalline synthetic, has the double action of protection and treatment.Procymidone is interior absorption fungicide, and Botrytis and Sclerotinia fungi are had to special efficacy, can prevent and treat gray mold, the stalk break of fruit tree, vegetable crop, and the fungi that benzimidazole is produced to resistance is also effective.
In the real process of agricultural production, using chemical agent is the most effectively means of control plant pest, but the problem the most easily producing by chemical control disease is the generation of disease drug resistance.In the chemical control of bacteriosis, years of researches have been carried out both at home and abroad, although some antibacterium medicaments have started to enter practical stage, but the medicament of chemosynthesis has long, the shortcoming such as cost is high, toxicity is large, environmental pollution is serious of cycle, can not meet the requirement of agricultural sustainable development far away.And long-term use single pesticidal preparations continuously high dose, easily cause the problems such as residual, the environmental pollution of medicament and resistance to pesticide resistance fungi development.And by contrast, exploitation is efficient with research, low toxicity, low-residual composite be mixed there is small investment, the lead time is short and be subject to domestic and international attention, the numerous and confused dynamics that develops that strengthens.We filter out thifluzamide and procymidone and carry out compositely on the basis of lab screening and field trial, have obvious synergistic effect.And about the composite composition pesticide of thifluzamide and procymidone and application, there is no at present people reported.
Summary of the invention
Based on above situation, the object of the invention is to provide a kind of new and effective composition pesticide, is mainly used in preventing and treating the fungus-caused disease of Basidiomycetes as the gray mold of banded sclerotial blight, damping off etc. and fruit tree, vegetable crop, stalk break etc.
Technical scheme of the present invention realizes by following measures:
A bactericidal composition that contains thifluzamide and procymidone, two yuan of the active ingredient thifluzamide of this composition pesticide and procymidones are composite, and all the other are auxiliary element.In wherein said composition pesticide, the mass ratio of active ingredient thifluzamide and procymidone is 1～50: 50～1, described composition pesticide of the present invention is through toxicity test experimental verification, the mass ratio of thifluzamide and procymidone is 1～10: 10～1 o'clock, and synergistic effect is optimum.
The formulations of pesticide that described composition pesticide of the present invention can be prepared are missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion, granule, microcapsule formulations, aqua.Wherein active ingredient thifluzamide and the procymidone gross mass in preparation accounts for 1%～80% of the whole quality of the pharmaceutical preparations, while wherein accounting for 1%～50%, and toxicity and residually reach good balance, cost is also lower.
The specific embodiments of the formulations of pesticide that composition pesticide of the present invention is mixed with is as follows:
Described bactericidal composition is cream preparation, and the mass fraction of component is: 1～50 part of thifluzamide; 1～50 part of procymidone; 10～30 parts of conventional emulsifiers; 20～50 parts of conventional solvents; 1～5 part of conventional synergist.The concrete production stage of this cream preparation is for first adding active ingredient thifluzamide and procymidone in solvent the oily liquids that becomes transparent and homogeneous after adding again emulsifier, synergist to stir after dissolving completely, filling, can be made into the cream preparation of the present composition.
Described bactericidal composition is suspending agent, and the mass fraction of component is: 1～50 part of thifluzamide; 1～50 part of procymidone; 5～20 parts of dispersants; 1～5 part of antifreezing agent; 0.1～2 part of thickener; 0.1～0.8 part of defoamer; 0～10 part of penetrating agent; 0.1～5 part of pH value conditioning agent; Water, surplus.The concrete production stage of this suspending agent is for first mixing other auxiliary agents, through high speed shear, mix, add active ingredient thifluzamide and procymidone, in ball crusher, abrading-ball is 2～3 hours, make a diameter all below 5mm, can be made into the suspending agent preparation of the present composition.
Described bactericidal composition is wetting powder, and the mass fraction of component is: 1～50 part of thifluzamide; 1～50 part of procymidone; 3～10 parts of dispersants; 1～5 part of wetting agent; Filler, surplus.The concrete production stage of this wetting powder is: by above-mentioned formula, active ingredient thifluzamide is mixed with procymidone and dispersant, wetting agent and filler, uniform stirring in stirred tank, after airslide disintegrating mill, mixing, can be made into the wetting powder of the present composition.
Described bactericidal composition is water dispersible granules, and the mass fraction of component is: 1～50 part of thifluzamide; 1～50 part of procymidone; 3～10 parts of dispersants; 1～10 part of wetting agent; 1～5 part of disintegrant; Filler, surplus.The concrete production stage of this water dispersible granules is: by above-mentioned formula, active ingredient thifluzamide is mixed with procymidone and dispersant, wetting agent, disintegrant and filler, with micro jet, pulverize, through mediating, then add and in fluidized bed prilling dryer, carry out granulation, dry, screening by sample analysis, can be made into the water dispersible granules of the present composition.
Described bactericidal composition is aqueous emulsion, and the mass fraction of component is: 1～50 part of thifluzamide; 1～50 part of procymidone; 3～30 parts of emulsifier; 5～15 parts of solvents; 2～15 parts of stabilizing agents; 1～5 part of antifreezing agent; 0.1～8 part of defoamer; 0.2～2 part of thickener; Water, surplus.The concrete production stage of this aqueous emulsion is: first thifluzamide and procymidone, solvent and emulsifier, cosolvent are added together, make to be dissolved into uniform oil phase; By part water, antifreeze, other the insecticides adjuvant such as antimicrobial mixes into uniform water; When reactor high speed stirs, oil phase is added to water, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water, shear about half an hour, form the aqueous emulsion of oil-in-water type, can be made into the aqueous emulsion of the present composition.
Described bactericidal composition is microemulsion, and the mass fraction of component is: 1～50 part of thifluzamide, 1～50 part of procymidone, 10～30 parts of emulsifier, 1～8 part of antifreezing agent, 0.5～10 part of stabilizing agent, 20～50 parts of conventional solvent cosolvents.Thifluzamide and procymidone are dissolved completely with cosolvent, then add other compositions such as emulsifier, antifreezing agent stabilizing agent, evenly mix, finally add water, after fully stirring, can be made into microemulsion.
Described bactericidal composition is granule, and the mass fraction of component is: 1～50 part of thifluzamide, 1～50 part of procymidone, 1～10 part of wetting dispersing agent; 0.1～5 part of thickener; 0.1～5 part of defoamer; Castor oil, surplus is supplied.Each components such as active ingredient thifluzamide and procymidone, dispersant, stabilizing agent, defoamer and solvent are mixed in the ratio of formula, put into after the grinding of sand milling still, send in mixer for well-distribution and mix and get product.
Described bactericidal composition is microcapsule formulations, and the mass fraction of component is: 1～50 part of thifluzamide, 1～50 part of procymidone, 5～20 parts, urea; 5～20 parts, formaldehyde; 5～20 parts of emulsifying dispersants; 1～5 part of antifreezing agent; 0.1～2 part of thickener; 0.1～0.8 part of defoamer; Water, surplus.In being housed, the there-necked flask of agitating device adds urea and formaldehyde (amount of substance ratio is about l:1.5～2.0), left and right, pH value to 8～9 with sodium hydroxide solution regulator solution, then be warming up to 70～80 ℃, reaction obtains stable urea resin prepolymer.Get a certain amount of thifluzamide and procymidone and be dissolved in cyclohexane, and add emulsifying dispersant in solution, follow vigorous stirring, the O/W type stable emulsion that to be made into the aqueous solution of take containing emulsifying dispersant be water.Above-mentioned urea resin prepolymer is added in emulsion, regulate pH value, polymerization reaction take place under acid catalysis condition, is wrapped oil phase substance, forms microcapsule granule.Slowly heat up, solidify, temperature is controlled at 40～50 ℃, hardening time 1h.Selection adds appropriate auxiliary agent, the microcapsules that gets final product stablely.
Described bactericidal composition is aqua, and the mass fraction of component is: 1～50 part of thifluzamide, 1～50 part of procymidone, 0.1～30 part of wetting dispersing agent; 2～8 parts of antifreezing agents; 0.1～1 part of defoamer; 0.1～3 part of thickener; 5～15 parts of spreader-stickers; Water, surplus is supplied.By active ingredient thifluzamide and procymidone, dissolve completely with cosolvent, then add other compositions such as dispersant, antifreezing agent, defoamer, evenly mix, finally add water, after fully stirring, get final product to obtain finished product.
Wherein above-described emulsifier is selected from calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, any or more than one any mixtures than forming in polyoxyethylene aliphatic alcohol ether.
Described solvent is dimethylbenzene or biodiesel, toluene, diesel oil, methyl alcohol, ethanol, n-butanol, isopropyl alcohol, turpentine-based vegetable oil code name is ND-45, solvent naphtha, dimethyl formamide, dimethyl sulfoxide (DMSO), one or more in water equal solvent are arbitrarily than the mixture forming.
It is LG-3, GY-D1252, GY-D1256, SNWGF-01 that described dispersant is selected from polycarboxylate code name, lignosulfonates code name is 201107,201108, alkylphenol polyoxyethylene methyl ether condensate sulfate, alkylsulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, polyoxyethylene carboxylate, aliphatic amine polyoxyethylene ether, one or more in fatty acid glyceride APEO.
Described wetting agent is selected from lauryl sodium sulfate, calcium dodecyl benzene sulfonate, and Nekal BX, moistening bleeding agent F, alkylbenzenesulfonate polyoxyethylene triphen is phosphenylic acid salt dimly, spaonin powder, silkworm excrement, one or more in soapberry powder.
Described disintegrant is selected from bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, one or more in sodium bicarbonate.
Described thickener is selected from xanthans, carboxymethyl cellulose, carboxyethyl cellulose, methylcellulose, Magnesiumaluminumsilicate, in polyvinyl alcohol one or more.
Described stabilizing agent is selected from sodium citrate, a kind of in resorcinol.
Described antifreezing agent is selected from ethylene glycol, propane diols, one or more in glycerine.
Described defoamer is selected from silicone oil, silicone compound, C
10-20saturated fat acid compounds, C
8-10one or more of fatty alcohol.
Described filler is selected from kaolin, diatomite, bentonite, attapulgite, white carbon, starch, one or more in precipitated calcium carbonate.
The present invention be take the composite bactericide that thifluzamide and procymidone be active ingredient and is had obvious synergistic effect, delay the drug-fast generation in key, and reduced and become to have produced cost and use cost, be mainly used in preventing and treating the fungus-caused disease of Basidiomycetes as the gray mold of banded sclerotial blight, damping off etc. and fruit tree, vegetable crop, stalk break etc.
Embodiment
For making technical scheme of the present invention, object and advantage are clearer, and the present invention describes with following specific embodiment, but the present invention is not limited to these examples.The mode that effect experiment of the present invention adopts indoor biometrics and field trial to combine, if no special instructions, the ratio of below mentioning is all ratio of quality and the number of copies.
Embodiment: thifluzamide proportioning co-toxicity experiments different from procymidone.
1.1 reagent agent
The former medicine of 95% thifluzamide, the former medicine of 95% procymidone, above-mentioned former medicine provides by research and development department of extra large rel medicine company limited company.
1.2 test targets
From Shouguang, Shandong, never executed thifluzamide and procymidone and cucumber of the same type gather potted plantly separated, for examination cucumber variety: Chang Chun Mi Ci.
1.3 test method
1.3.1 medicament preparation
First use the former medicine of acetone solution, according to the result of preliminary experiment, two appropriate former medicines are made into several different proportionings, then it is stand-by with acetone, each processing to be diluted to respectively to several concentration gradients.
Susceptible cucumber variety Chang Chun Mi Ci cultivation, in pot for growing seedlings, is placed in to greenhouse and cultivates, and plant grows to three to four leaf after dates, gathers the blade of identical leaf age, for cultivation and the mensuration of gray mold of cucumber germ.
1.3.2 the cultivation of cucumber downy mildew germ and the preparation of spore suspension
Cucumber downy mildew germ adopts plants method to cultivate under 20 ℃, the condition of 12h alternation of light and darkness, and every 30 d turn culture 1 time.During inoculation, with the conidium on sterile water wash-out incidence of leaf, being mixed with spore concentration is l * 10
6the suspension of individual/mL.
1.3.3 strains tested sensitivity testing
Adopt leaf dish moisturizing method to carry out toxicity test.First the blade of collection is prepared into the leaf dish that diameter is 1.5cm, mix at random, be placed in respectively the series concentration liquid configuring and soak lh, 50 leaf dishes of each concentration, test is with the blank that is treated to of adding medicine not, after immersion finishes, leaf faces up and puts on the wetting blotting paper of identical liquor strength, liquid on leaf dish is blotted, the spore suspension l0L preparing is inoculated in to leaf dish central authorities, and room temperature is placed after 5 min, is placed under 20 ℃, the condition of 1 2h alternation of light and darkness and cultivates, after 10d, measure the onset area on leaf dish, calculate EC
500.
The percentage that accounts for leaf disc area according to lesion area is divided sick level
0 grade: anosis;
1 grade: sorus area accounts for below 5% of whole leaf area;
3 grades: sorus area accounts for below the 6%-10% of whole leaf area;
5 grades: sorus area accounts for below the 11%-20% of whole leaf area;
7 grades: sorus area accounts for below the 21%-50% of whole leaf area;
9 grades: sorus area accounts for the more than 50% of whole leaf area;
1.3.4 mixture toxicity test and interpretation of result
By single dose toxicity test method, according to mixed ratio, carry out the toxicity test of mixture.
If contrast lethality <5%, does not proofread and correct, contrast lethality, between 5%-20%, is proofreaied and correct by formula 2, contrast lethality >20%, and test need be reformed.
The logarithm value of drug concentration (mg/L) of take is independent variable x, and the probability value of corrected mortality of take is dependent variable y, sets up respectively virulence regression equation formula, adopts DPS software to calculate the EC of single dose and each proportioning mixture
50according to the abundant method of Sun Yun, calculate co-toxicity coefficient (CTC).Co-toxicity coefficient CTC, computing formula is as follows: (take thifluzamide as standard medicament, its toxicity index is 100):
The EC of the toxicity index of procymidone (TI)=thifluzamide
50the EC of/procymidone
50* 100
The EC of true toxicity index (ATI)=thifluzamide of M
50the EC of/M
50* 100
TI * P procymidone of TI * P thifluzamide+procymidone of theoretical toxicity index (TTI)=thifluzamide of M
TTI * 100 of the ATI/M of the co-toxicity coefficient of M (CTC)=M
In formula:
M is thifluzamide and the mixture of the different proportionings of procymidone
P thifluzamide is thifluzamide shared ratio in mixture
P procymidone is procymidone shared ratio in mixture.
2.1 toxicity test results
Table 1 thifluzamide and the procymidone toxicity test to gray mold of cucumber
As can be seen from the table, the result of the test of different proportion proportioning shows, in active ingredient ratio, dilute respectively and all show stronger synergistic effect, wherein take thifluzamide: procymidone as 1:10～10:1 time synergistic effect best, suggestion is carried out further field control effectiveness test to suitable proportion 1:10～10:1 left and right mixture preparation, to evaluate its field practical application effect.
3, field trial is prevented and treated the experimental result of rice sheath blight disease, gray mold of cucumber
3.1 field trials are prevented and treated rice sheath blight disease
3.1.1 test method
Test is located in the farmland covered by contract of Ling Jia natural village, cypress village, Liu Hu township, Xinjian County, and this ground physical features is smooth, and previous crops is dryland paddy, and soil fertility is better, each community term harmonization, and supplying is crop late rice, experimental cultivar: Jingchu excellent 148.
10 processing are established in test, and every processing repeats 4 times, Gong20Ge community, every community area 30m
2, random district group is arranged.5 points of every community random searching, look into 5 strains at every, record diseased plant number.
3.1.2 control time and number of times
Test is investigated 4 times altogether, radix investigation before medicine, for the first time after medicine 7 days, after 7 days and medicine, within 15 days, investigate after medicine for the second time.
3.1.3 state of an illness grade and drug effect computational methods
State of an illness grade and drug effect computational methods are all carried out according to < < pesticide field efficacy medicine test criterion () > > GB/T-17980.19-2000.Wherein disease index preventive effect computing formula is as follows:
Disease index=∑ (diseased plant number * relative level numerical value at different levels)/(investigating total strain number * 9) * 100,
Control efficiency (%)=(disease index after the front disease index * treatment region medicine of 1-(blank district medicine)/(the front disease index of disease index * treatment region medicine after blank district medicine)) * 100.
Each processes the effect of preventing and treating rice sheath blight disease table 2
As shown in Table 2 thifluzamide and procymidone with 3:1 ratio composite bactericide for rice sheath blight disease control successful higher than thifluzamide and procymidone single dose, bactericidal effect increases progressively with the increase of dosage.According to field range estimation, within the scope of test dose, plant growth is normal, and the poisoning phenomenon to paddy rice does not all appear in each treatment agent, and explanation is safe, significant for agricultural produce, is worthy to be popularized.
3.2 field trial control gray molds of cucumber
3.2.1 test method
Test is on Shandong Pingdu City cucumber ground, and test kind is middle peasant No. 8, and every processing repeats for 4 times, 5 points of every community double diagonal line investigation, and every some investigation 3 strain cucumber, record occurring degree by staging, and grade scale is as follows:
0 grade: anosis;
1 grade: scab heap area accounts for below 5% of whole leaf area;
3 grades: scab heap area accounts for below the 6%-10% of whole leaf area;
5 grades: scab heap area accounts for below the 11%-20% of whole leaf area;
7 grades: scab heap area accounts for below the 21%-50% of whole leaf area;
9 grades: scab heap area accounts for the more than 50% of whole leaf area.
3.2.2 control time and number of times
Test is investigated 4 times altogether, and radix investigation before medicine is investigated after 7 days, 7 days for the second time and medicine after medicine for the first time for 15 days.
3.2.3 drug effect computational methods
The total number of sheets * 100 of sick leaf rate (%)=sick number of sheets/investigate
Disease index=∑ (the sick number of sheets * relative level numerical value at different levels)/(investigating the total number of sheets * 9) * 100
Control efficiency (%)=(disease index after the front disease index * treatment region medicine of 1-(blank district medicine)/(the front disease index of disease index * treatment region medicine after blank district medicine)) * 100.
3.2.4 poisoning investigation method
After dispenser, whether 15d range estimation medicament has poisoning to crop continuously.
3.2.5 result of the test and analysis
Table 3 different disposal is prevented and treated measurement result to gray mold of cucumber
By above field experiment, show, thifluzamide and procymidone complex preparation are obviously better than single dose for the preventive effect of gray mold of cucumber, and bactericidal effect increases progressively with the increase of dosage.According to field range estimation, within the scope of test dose, plant growth is normal, without poisoning situation, occurs, significant for agricultural produce, is worthy to be popularized.
In sum, the bactericidal composition that the present invention contains thifluzamide and procymidone, has good control efficiency to rice sheath blight disease, gray mold of cucumber, and it is to target crop safety.Complex preparation has not only improved preventive effect, and has expanded the control to bacterium, so this compounded combination tool in production practices is of great significance.
Claims (4)
1. a bactericidal composition that contains thifluzamide and procymidone, it is characterized in that: the active ingredient of this composition pesticide is thifluzamide and procymidone binary built, all the other are auxiliary element, and wherein the mass ratio of active ingredient thifluzamide and procymidone is 1～50: 50～1.
2. composition pesticide according to claim 1, is characterized in that: thifluzamide and the procymidone gross weight in preparation accounts for 1%～80% of the whole quality of the pharmaceutical preparations.
3. composition pesticide according to claim 2, is characterized in that: thifluzamide and the procymidone gross weight in preparation accounts for 1%～50% of the whole quality of the pharmaceutical preparations.
4. according to the composition pesticide described in claim 1 or 2 or 3, it is characterized in that: the formulation of this composition pesticide is missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion, microcapsule formulations, granule, aqua
.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113785838A (en) * | 2021-10-21 | 2021-12-14 | 浙江农林大学 | Combination fungicides containing chlorophenoxyamide and procymidone |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101755825A (en) * | 2009-11-23 | 2010-06-30 | 陈章艳 | Bactericide composition containing thifluzamide |
| CN102626090A (en) * | 2012-03-19 | 2012-08-08 | 王春水 | Agricultural sterilization composition containing thifluzamide and use thereof |
| CN103918677A (en) * | 2013-01-12 | 2014-07-16 | 王学权 | Thifluzamide-containing sterilization composition |
-
2014
- 2014-03-31 CN CN201410124329.9A patent/CN103918679A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101755825A (en) * | 2009-11-23 | 2010-06-30 | 陈章艳 | Bactericide composition containing thifluzamide |
| CN102626090A (en) * | 2012-03-19 | 2012-08-08 | 王春水 | Agricultural sterilization composition containing thifluzamide and use thereof |
| CN103918677A (en) * | 2013-01-12 | 2014-07-16 | 王学权 | Thifluzamide-containing sterilization composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113785838A (en) * | 2021-10-21 | 2021-12-14 | 浙江农林大学 | Combination fungicides containing chlorophenoxyamide and procymidone |
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Application publication date: 20140716 |