CN103609575B - A kind of bactericidal composition containing tetramycin and pyraclostrobin - Google Patents
A kind of bactericidal composition containing tetramycin and pyraclostrobin Download PDFInfo
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Abstract
Contain a bactericidal composition for tetramycin and pyraclostrobin, active ingredient tetramycin and the pyraclostrobin two yuan of this composition pesticide are composite, and all the other are auxiliary element.In wherein said composition pesticide, the mass ratio of active ingredient tetramycin and pyraclostrobin is 1 ~ 50: 50 ~ 1; the ratio of quality and the number of copies 1% ~ 80% of active ingredient tetramycin and pyraclostrobin in preparation; all the other are for allowing the auxiliary element using and accept in agricultural chemicals; the formulation of composition pesticide of the present invention is missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion, to powdery mildew of cucumber, downy mildew and fruit tree putrefaction disease spot defoliation; Rice blast; Root rot; Cucurbits fusarium wilt; Cotton verticillium wilt; Jujube tree rust; Fruit white rot of grape; Panax pseudoginseng black spot; Tealeaves tea gall, the fungal disease special efficacys such as forest rot, canker, gummosis, defoliation, woods seedling blight.
Description
Technical field
The present invention relates to technical field of pesticide combination, particularly relate to a kind of bactericidal composition containing tetramycin and pyraclostrobin.
Background technology
The fermentating metabolism product that tetramycin (tetramycin) is S. ahygroscopicus Wuzhou subspecies, fungicidal spectrum is wide, all has extremely strong killing action to three main kind of 26 kinds of known disease funguses such as mastigomycetes, sac fungi and Deuteromycotina fungies.Be suitable for the multiple fungi of various crop, the control of bacteriosis.Especially to fruit tree putrefaction disease spot defoliation; Rice blast; Root rot; Cucurbits fusarium wilt; Cotton verticillium wilt; Jujube tree rust; Fruit white rot of grape; Panax pseudoginseng black spot; Tealeaves tea gall, the fungal disease special efficacys such as forest rot, canker, gummosis, defoliation, woods seedling blight.
Pyraclostrobin (pyraclostrobin) is the bactericide of BASF AG's latest model methoxy acrylic.Pyraclostrobin is New-type wide-spectrum bactericide.The mechanism of action: be mitochondrial respiratory inhibitor. namely in synthesizing at cytochrome b cl, stop electro transfer.There is protection, treatment, blade infiltration conduction.Pyraclostrobin missible oil shows there is good control efficiency to powdery mildew of cucumber, downy mildew and banana freckle, leaf spot through field control effectiveness test result.Chemical name: N-f2-" 1-(4-chlorobenzene)-1H-pyrazoles-3-yloxymethyl " benzene foretells N-methoxy methyl carbamate.Its chemical structural formula is
。
In the real process of agricultural production, using chemical agent is the most effective means of control plant pest, but is the generation of disease drug resistance by the problem that chemical control disease the most easily produces.In the chemical control of bacteriosis, years of researches are carried out both at home and abroad, although some antibacterium medicaments have started to enter practical stage, but the medicament of chemosynthesis has cycle long, the shortcoming such as cost is high, toxicity is large, environmental pollution is serious, 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 the remaining of medicament, environmental pollution and resistance to pesticide resistance fungi development.And by contrast, exploitation is efficient with research, low toxicity, low-residual composite and mixture has small investment, the lead time is short and be subject to domestic and international attention, numerous and confused increasing develops dynamics.We are on the basis of lab screening and field trial, filter out tetramycin and pyraclostrobin carries out composite, have obvious synergistic effect.And about tetramycin and pyraclostrobin composite composition pesticide and apply and there is no people at present and 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, to powdery mildew of cucumber, downy mildew and fruit tree putrefaction disease spot defoliation; Rice blast; Root rot; Cucurbits fusarium wilt; Cotton verticillium wilt; Jujube tree rust; Fruit white rot of grape; Panax pseudoginseng black spot; Tealeaves tea gall, the fungal disease special efficacys such as forest rot, canker, gummosis, defoliation, woods seedling blight.
Technical scheme of the present invention is realized by following measures:
Contain the composition pesticide preventing and treating the viroses of plant of tetramycin and pyraclostrobin, active ingredient tetramycin and the pyraclostrobin two yuan of this composition pesticide are composite, and all the other are auxiliary element.In wherein said composition pesticide, the mass ratio of active ingredient tetramycin and pyraclostrobin is 1 ~ 50: 50 ~ 1, described composition pesticide of the present invention is through toxicity test experimental verification, when the mass ratio of tetramycin and pyraclostrobin is 1 ~ 40: 40 ~ 1, synergistic effect is better.
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.Wherein active ingredient tetramycin and pyraclostrobin gross mass in the formulation accounts for 1% ~ 80% of the whole quality of the pharmaceutical preparations, and when wherein accounting for 15%-50%, toxicity reaches good balance with residual, and 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: tetramycin 1 ~ 50 part; Pyraclostrobin 1 ~ 50 part; Conventional emulsifier 10 ~ 30 parts; Conventional solvents 20 ~ 50 parts; Conventional synergist 1 ~ 5 part.The concrete production stage of this cream preparation be first active ingredient tetramycin and pyraclostrobin are added dissolve completely in solvent after add emulsifier again, synergist becomes transparent and homogeneous oily liquids after stirring, filling, namely can be made into the cream preparation of the present composition.
Described bactericidal composition is suspending agent, and the mass fraction of component is: tetramycin 1 ~ 50 part; Pyraclostrobin 1 ~ 50 part; Dispersant 5 ~ 20 parts; Antifreezing agent 1 ~ 5 part; Thickener 0.1 ~ 2 part; Defoamer 0.1 ~ 0.8 part; Penetrating agent 0 ~ 10 part; PH value regulator 0.1 ~ 5 part; Water, surplus.The concrete production stage of this suspending agent is for first to mix other auxiliary agents, mix through high speed shear, add active ingredient tetramycin and pyraclostrobin, abrading-ball 2 ~ 3 hours in ball crusher, make a diameter all at below 5mm, namely can be made into the aqueous suspension formulations of the present composition.
Described bactericidal composition is wetting powder, and the mass fraction of component is: tetramycin 1 ~ 50 part; Pyraclostrobin 1 ~ 50 part; Dispersant 3 ~ 10 parts; Wetting agent 1 ~ 5 part; Filler, surplus.The concrete production stage of this wetting powder is: mixed with pyraclostrobin and dispersant, wetting agent and filler by active ingredient tetramycin by above-mentioned formula, uniform stirring in stirred tank, mixing after airslide disintegrating mill, namely 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: tetramycin 1 ~ 50 part; Pyraclostrobin 1 ~ 50 part; Dispersant 3 ~ 10 parts; Wetting agent 1 ~ 10 part; Disintegrant 1 ~ 5 part; Filler, surplus.The concrete production stage of this water dispersible granules is: mixed with pyraclostrobin and dispersant, wetting agent, disintegrant and filler by active ingredient tetramycin by above-mentioned formula, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and to carry out after granulation, drying, screening, through sample analysis, namely 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: tetramycin 1 ~ 50 part; Pyraclostrobin 1 ~ 50 part; Emulsifier 3 ~ 30 parts; Solvent 5 ~ 15 parts; Stabilizing agent 2 ~ 15 parts; Antifreezing agent 1 ~ 5 part; Defoamer 0.1 ~ 8 part; Thickener 0.2 ~ 2 part; Water, surplus.The concrete production stage of this aqueous emulsion is: first tetramycin and pyraclostrobin, solvent and emulsifier, cosolvent are added together, and makes to be dissolved into uniform oil phase; By part water, antifreeze, other the insecticides adjuvant such as antimicrobial mixes uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., 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, namely can be made into the aqueous emulsion of the present composition.
Described bactericidal composition is microemulsion, and the mass fraction of component is: tetramycin 1 ~ 50 part, pyraclostrobin 1 ~ 50 part, emulsifier 10 ~ 30 parts, antifreezing agent 1 ~ 8 part, stabilizing agent 0.5 ~ 10 part, Conventional solvents cosolvent 20 ~ 50 parts.Tetramycin and pyraclostrobin cosolvent are dissolved completely, then add other compositions such as emulsifier, antifreezing agent stabilizing agent, Homogeneous phase mixing, finally adds water, can be made into microemulsion after fully stirring.
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 one in polyoxyethylene aliphatic alcohol ether or more than one any mixtures than composition.
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 of composition.
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, Nekal BX, moistening bleeding agent F, alkylbenzenesulfonate polyoxyethylene triphen 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, the one 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 composite bactericide that the present invention is active ingredient with tetramycin and pyraclostrobin has obvious synergistic effect, delays the drug-fast generation in key, and reduces into product cost and use cost, can be used for the improvement of resistance disease.To powdery mildew of cucumber, downy mildew and fruit tree putrefaction disease spot defoliation; Rice blast; Root rot; Cucurbits fusarium wilt; Cotton verticillium wilt; Jujube tree rust; Fruit white rot of grape; Panax pseudoginseng black spot; Tealeaves tea gall, the fungal disease special efficacys such as forest rot, canker, gummosis, defoliation, woods seedling blight.
Embodiment
For making technical scheme of the present invention, object and advantage are clearly understood, the following specific embodiment of the present invention is described, but the present invention is not limited to these examples.The mode that effect experimental of the present invention adopts indoor biometrics and field trial to combine, if no special instructions, the ratio below mentioned is all ratio of quality and the number of copies.
Embodiment: tetramycin and pyraclostrobin different ratio co-toxicity are tested.
1.1 test targets
Never executed tetramycin and pyraclostrobin and cucumber of the same type to gather potted plantly be separated, for examination cucumber variety: Chang Chun Mi Ci from Shouguang, Shandong.
1.2 test method
By susceptible cucumber variety Chang Chun Mi Ci cultivation in pot for growing seedlings, be placed in greenhouse and cultivate, plant grows to three to four leaf after dates, gathers the blade of identical leaf age, for cultivation and the mensuration of cucumber powdery mildew's pathogen.
1.2.1 the cultivation of cucumber powdery mildew's pathogen and the preparation of spore suspension
Cucumber powdery mildew's pathogen adopt plants method 20 DEG C, cultivate under the condition of 12h alternation of light and darkness, every 30d turns culture 1 time.With the conidium on sterile water wash-out incidence of leaf during inoculation, being mixed with spore concentration is l × 10
6the suspension of individual/mL.
1.2.2 strains tested sensitivity testing
Leaf dish moisturizing method is adopted to carry out toxicity test.First the blade of collection is prepared into the leaf dish that diameter is 1.5cm, random mixing, be placed in the series concentration liquid configured respectively and soak lh, each concentration 50 leaf dishes, test with the process of not adding medicine as blank, after immersion terminates, leaf faces up and puts on the blotting paper that identical liquor strength is wetting, liquid on leaf dish is blotted, the spore suspension l0L prepared is inoculated in leaf dish central authorities, room temperature is placed after 5min, is placed in 20 DEG C, cultivates under the condition of 12h alternation of light and darkness, measure the onset area on leaf dish after 10d, calculate EC
50.
On the basis of preliminary experiment, respectively toxicity test is carried out to single dose tetramycin and pyraclostrobin in order to upper method, the two EC
50value is respectively 13.6574 ㎎/l and 10.2147 ㎎/l.
The percentage accounting for leaf disc area according to lesion area divides disease level
0 grade: anosis;
1 grade: sorus area accounts for less than 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 more than 50% of whole leaf area.
1.2.3 mixture toxicity test and interpretation of result
Carry out the toxicity test of mixture according to mixed ratio by single dose toxicity test method.
If contrast lethality <5%, does not correct, contrast lethality, between 5%-20%, corrects by formula 2, and contrast lethality >20%, test need be reformed.
Be independent variable x with the logarithm value of drug concentration (mg/L), with the probability value of corrected mortality for dependent variable y, set up virulence regression equation formula respectively, adopt DPS software to calculate the EC of single dose and each proportioning mixture
50co-toxicity coefficient (CTC) is calculated according to the abundant method of Sun Yun.Co-toxicity coefficient CTC, computing formula is as follows: (take tetramycin as standard agent, its toxicity index is 100):
The EC of toxicity index (the TI)=tetramycin of pyraclostrobin
50the EC of/pyraclostrobin
50× 100
The EC of true toxicity index (the ATI)=tetramycin of M
50the EC of/M
50× 100
TI × P pyraclostrobin of TI × P tetramycin+pyraclostrobin of theoretical toxicity index (the TTI)=tetramycin of M
TTI × 100 of the ATI/M of co-toxicity coefficient (the CTC)=M of M
In formula:
M is the mixture of tetramycin and pyraclostrobin different ratio
P tetramycin is the ratio of tetramycin shared by mixture
P pyraclostrobin is the ratio of pyraclostrobin shared by mixture.
2.1 toxicity test results
Table 1 tetramycin and pyraclostrobin are to the toxicity test of powdery mildew of cucumber
As can be seen from the table, the result of the test of different proportion proportioning shows, dilute respectively in active ingredient ratio and all show stronger synergistic effect, wherein with tetramycin: time pyraclostrobin is 1:20 ~ 20:1, synergistic effect is best, suggestion carries out further field control effectiveness test to suitable proportion about 1:20 ~ 20:1 mixture preparation, to evaluate its field practical application effect.
3 field trials prevent and treat the experimental result of powdery mildew of cucumber, cucumber bacterial angular leaf spot
3.1 field trials prevent and treat powdery mildew of cucumber
3.1.1 test method
Test on Shandong Pingdu City cucumber ground, 4 points are investigated in every community, often some investigation 2 strains, and record occurring degree by staging, grade scale is as follows:
0 grade: anosis;
1 grade: sorus area accounts for less than 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 more than 50% of whole leaf area.
3.1.2 control time and number of times
Test altogether investigate 4 times, before medicine radix investigation, first time medicine after 7 days, second time 7 days and medicine after within 15 days, investigate.
3.1.3 drug effect computational methods
Sick leaf rate (%)=sick number of sheets/investigate the total number of sheets × 100
Disease index=∑ (the sick number of sheets × relative level numerical value at different levels)/(investigating the total number of sheets × 9) × 100
Control efficiency (%)=(before 1-(blank district medicine after disease index × treatment region medicine disease index)/(after blank district medicine before disease index × treatment region medicine disease index)) × 100.
3.1.4 poisoning investigation method
Whether after dispenser, continuous 15d estimates medicament has poisoning to crop.
3.1.5 result of the test and analysis
Each process prevents and treats the effect of powdery mildew of cucumber.(table 2)
The effect of powdery mildew of cucumber prevented and treated by table 2 respectively process
48% tetramycin and pyraclostrobin control successful higher than tetramycin and pyraclostrobin single dose with 24:24 ratio composite bactericide for powdery mildew of cucumber as shown in Table 2, 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, and the poisoning phenomenon to cucumber does not all appear in each treatment agent, illustrates that it is safe to cucumber, significant for agricultural produce, is worthy to be popularized.
3.2 field trial control cucumber bacterial angular leaf spots
3.2.1 test method
Test on Shandong Pingdu City cucumber ground, test kind is middle peasant No. 8, and often process 4 times and repeat, every community double diagonal line investigates 5 points, often some investigation 3 strain cucumber, and record occurring degree by staging, grade scale is as follows:
0 grade: anosis;
1 grade: scab heap area accounts for less than 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 more than 50% of whole leaf area.
3.2.2 control time and number of times
Test altogether investigate 4 times, before medicine radix investigation, first time medicine after 7 days, second time 7 days and medicine after within 15 days, investigate.
3.2.3 drug effect computational methods
Sick leaf rate (%)=sick number of sheets/investigate the total number of sheets × 100
Disease index=∑ (the sick number of sheets × relative level numerical value at different levels)/(investigating the total number of sheets × 9) × 100
Control efficiency (%)=(before 1-(blank district medicine after disease index × treatment region medicine disease index)/(after blank district medicine before disease index × treatment region medicine disease index)) × 100.
3.2.4 poisoning investigation method
Whether after dispenser, continuous 15d estimates medicament has poisoning to crop.
3.2.5 result of the test and analysis
Table 3 different disposal prevents and treats measurement result to cucumber bacterial angular leaf spot
Shown by above field experiment, tetramycin and pyraclostrobin complex preparation are obviously better than single dose for the preventive effect of cucumber bacterial angular leaf spot, 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, occurs without poisoning situation, significant for agricultural produce, is worthy to be popularized.
In sum, the present invention contains the bactericidal composition of tetramycin and pyraclostrobin, has good control efficiency to powdery mildew of cucumber and cucumber bacterial angular leaf spot, and it is to Target crops safety.Complex preparation not only increases preventive effect, and expands the control to bacterium, so this compounded combination tool in production practices is of great significance.
Claims (4)
1. one kind contains the bactericidal composition of tetramycin and pyraclostrobin, it is characterized in that: the active ingredient of this bactericidal composition is tetramycin and pyraclostrobin binary built, all the other are auxiliary element, and wherein the mass ratio of active ingredient tetramycin and pyraclostrobin is 1:4,1:3,1:2,2:1 or 4:1.
2. bactericidal composition according to claim 1, is characterized in that: tetramycin and the pyraclostrobin gross mass in bactericidal composition accounts for 1% ~ 80% of whole bactericidal composition quality.
3. bactericidal composition according to claim 2, is characterized in that: tetramycin and the pyraclostrobin gross mass in bactericidal composition accounts for 15% ~ 50% of whole bactericidal composition quality.
4. the bactericidal composition according to claim 1 or 2 or 3, is characterized in that: the formulation of this bactericidal composition is missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion.
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| CN104145668B (en) * | 2014-08-04 | 2016-06-15 | 塔里木大学 | A kind of dense planting Fructus Jujubae garden melasma method for integrated control |
| CN104957154B (en) * | 2015-06-24 | 2018-05-18 | 广东中迅农科股份有限公司 | Bactericidal composition containing tetramycin and kresoxim-methyl |
| CN105394054A (en) * | 2015-09-11 | 2016-03-16 | 广东中迅农科股份有限公司 | Pesticide composition containing tetramycin and mandipropamid |
| CN105230640A (en) * | 2015-10-31 | 2016-01-13 | 青岛奥迪斯生物科技有限公司 | Bactericidal composition containing tetramycin and benziothiazolinone |
| CN106577696A (en) * | 2016-11-12 | 2017-04-26 | 广东中迅农科股份有限公司 | Tetramycin-containing pesticidal composition |
| CN112471162B (en) * | 2020-12-02 | 2023-06-30 | 青岛海利尔生物科技有限公司 | Sterilization composition containing tetramycin and pyraclostrobin |
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