CN109392932A - A kind of bactericidal composition containing coumoxystrobin and Zhongshengmycin - Google Patents
A kind of bactericidal composition containing coumoxystrobin and Zhongshengmycin Download PDFInfo
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- CN109392932A CN109392932A CN201710694124.8A CN201710694124A CN109392932A CN 109392932 A CN109392932 A CN 109392932A CN 201710694124 A CN201710694124 A CN 201710694124A CN 109392932 A CN109392932 A CN 109392932A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/18—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, directly attached to a heterocyclic or cycloaliphatic ring
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
A kind of bactericidal composition containing coumoxystrobin and Zhongshengmycin, the effective component coumoxystrobin of the bactericidal composition are compounded with Zhongshengmycin two-spot, remaining is auxiliary element.Wherein the mass ratio of effective component coumoxystrobin and Zhongshengmycin is 1~50: 50~1 in the composition pesticide, the mass parts ratio 1%~80% of effective component coumoxystrobin and Zhongshengmycin in preparation, remaining is the auxiliary element for allowing to use and receive in pesticide, the dosage form of composition pesticide of the present invention is missible oil, suspending agent, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, granule, microcapsule formulations, is mainly used for preventing and treating 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 gall of tea；Forest rot disease, canker, bleeding disease, defoliation, woods seedling blight, dish Bacteria erwinia, avenae subsp.citrull, rice leaf spot bacteria, apple ring spot germ, fusarium graminearum etc..
Description
Technical field
The present invention relates to technical field of pesticide compounding, more particularly to a kind of sterilization containing coumoxystrobin and Zhongshengmycin
Composition.
Background technique
Coumoxystrobin category methoxy acrylic protective fungicide, while having certain therapeutic effect concurrently, have
Wide spectrum, low toxicity, efficiently, safety feature, have it is immune, prevent, treat, increasing both production and income effect；To apple tree canker special efficacy, it is
The most authoritative medicament of whole nation prevention and treatment rot disease；Wide sterilization spectrum, to melon fruits and vegetables, fruit tree downy mildew, late blight, scab, charcoal
Subcutaneous ulcer disease, leaf mold are effective；Simultaneously to ring spot, anthracnose, cotton wilt, rice pestilence, banded sclerotial blight, root rotof flax,
Corn southern leaf blight is also effective.
Zhongshengmycin is a kind of novel agricultural antibiotic that biological control research institute, the Chinese Academy of Agricultural Sciences succeeds in developing, and is by lilac grey strepto-
The antibiotic that the mutation of bacterium Hainan generates belongs to N- glycoside alkali water-soluble substance.Its has a broad antifungal spectrum, can resisting gram-positive,
Negative bacteria, mycobacteria, saccharomycete and filamentous fungi.Especially to crops pathogenic bacteria such as dish Bacteria erwinia, angular leaf spot of cucumber
Bacterium, rice leaf spot bacteria, apple ring spot germ, fusarium graminearum etc. all have apparent antibacterial activity.Pass through inhibition
The peptide bond of pathogenetic bacteria protein generates, and eventually leads to bacterial death；The growth of mycelia can inhibit to fungi, inhibit sprouting for spore
Hair plays the role of preventing and treating fungal disease；The generation of the precursor substance of protective plant protecting agent and lignin in plant can be stimulated, thus
Improve the disease resistance of plant.
In the real process of agricultural production, application chemical agent is prevention and treatment plant pest the most effective means, but
The problem of being most easily produced by chemical prevention 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 begun into practical stage, chemistry is closed
At medicament have the shortcomings that the period is long, at high cost, toxicity is big, environmental pollution is serious, be far from satisfying agriculture sustainable development
The requirement of exhibition.And long-term continuous high dose apply single pesticidal preparations, be easy to cause residual, the environmental pollution of medicament with
And the problems such as drug-resistant fungi development.And in contrast, it develops and studies efficient, less toxic, low-residual compound and mixture tool
Have small investment, the lead time is short and is paid attention to both at home and abroad, increase developing efforts one after another.We screen indoors and field
It on the basis of test, filters out coumoxystrobin and is compounded with Zhongshengmycin, there is apparent synergistic effect.And about cloves bacterium
Ester is with the composition pesticide of Zhongshengmycin compounded and using it has not been reported so far.
Summary of the invention
Based on the above circumstances, it is an object of that present invention to provide a kind of new and effective composition pesticide, it is mainly used for preventing and treating
Fruit tree putrefaction disease；Spot defoliation；Rice blast；Root rot；Cucurbits fusarium wilt；Cotton verticillium wilt；Jujube tree rust；Grape is white
Maize ear rot；Panax pseudoginseng black spot；Tealeaves gall of tea, forest rot disease, canker, bleeding disease, defoliation, woods seedling blight,
Dish Bacteria erwinia, avenae subsp.citrull, rice leaf spot bacteria, apple ring spot germ, fusarium graminearum etc..
The technical solution of the present invention is achieved by the following measures:
A kind of bactericidal composition containing coumoxystrobin and Zhongshengmycin, the effective component coumoxystrobin of the composition pesticide
It is compounded with Zhongshengmycin two-spot, remaining is auxiliary element.Wherein effective component coumoxystrobin and middle life in the composition pesticide
The mass ratio of rhzomorph is 1~50: 50~1, the composition pesticide of the present invention through toxicity test experimental verification, coumoxystrobin with
When the mass ratio of Zhongshengmycin is 1~20: 20~1, synergistic effect is preferable.
The formulations of pesticide that the composition pesticide of the present invention can be prepared are missible oil, suspending agent, wettable powder, moisture
Shot agent, aqueous emulsion, microemulsion, granule, microcapsule formulations.Wherein effective component coumoxystrobin and Zhongshengmycin be in the formulation
Gross mass accounts for the 1%~80% of the entire quality of the pharmaceutical preparations, wherein toxicity and residues achieve a better balance when accounting for 1%-20%, at
This is relatively low.
The specific embodiment for the formulations of pesticide that composition pesticide of the present invention is configured to is as follows:
The bactericidal composition is cream preparation, the mass fraction of component are as follows: 1~20 part of coumoxystrobin；Zhongshengmycin 1
~20 parts；10~30 parts of conventional emulsifier；20~50 parts of Conventional solvents；1~5 part of conventional synergist.The cream preparation it is specific
Production stage is to add emulsifier, synergy after being first completely dissolved in effective component coumoxystrobin and Zhongshengmycin addition solvent
Agent is filling after mixing evenly at homogeneous and transparent oily liquids, can the missible oil preparation made into the composition of the present invention.
The bactericidal composition is suspending agent, the mass fraction of component are as follows: 1~20 part of coumoxystrobin；Zhongshengmycin 1~
20 parts；5~20 parts of dispersing agent；1~5 part of antifreezing agent；0.1~2 part of thickener；0.1~0.8 part of defoaming agent；Penetrating agent 0~10
Part；0.1~5 part of pH adjusting agent；Water, surplus.The specific production stage of the suspending agent is first to mix other auxiliary agents, through high speed
Shear-mixed is uniform, and effective component coumoxystrobin and Zhongshengmycin, abrading-ball 2~3 hours in ball crusher, which is added, keeps a diameter equal
In 5mm hereinafter, can be made into the aqueous suspension formulations of the present composition.
The bactericidal composition is wettable powder, the mass fraction of component are as follows: 1~20 part of coumoxystrobin；Middle raw bacterium
1~20 part of element；3~10 parts of dispersing agent；1~5 part of wetting agent；Filler, surplus.The specific production stage of the wettable powder are as follows:
Effective component coumoxystrobin is mixed with Zhongshengmycin and dispersing agent, wetting agent and filler by above-mentioned formula, in a stirring kettle
Uniform stirring is being uniformly mixed after airslide disintegrating mill, that is, can be made into the wettable powder of the present composition.
The bactericidal composition is water dispersible granules, the mass fraction of component are as follows: 1~20 part of coumoxystrobin；Middle raw bacterium
1~20 part of element；3~10 parts of dispersing agent；1~10 part of wetting agent；1~5 part of disintegrating agent；Filler, surplus.The water dispersible granules
Specific production stage are as follows: by above-mentioned formula by effective component coumoxystrobin and Zhongshengmycin and dispersing agent, wetting agent, disintegrating agent with
And filler is uniformly mixed, and is crushed with micro jet, through mediating, is then added in fluidized-bed granulation dryer and is made
Through sampling analysis after grain, dry, screening, that is, it can be made into the water dispersible granules of the present composition.
The bactericidal composition is aqueous emulsion, the mass fraction of component are as follows: 1~20 part of coumoxystrobin；Zhongshengmycin 1~
20 parts；3~30 parts of emulsifier；5~15 parts of solvent；2~15 parts of stabilizer；1~5 part of antifreezing agent；0.1~8 part of defoaming agent；Increase
Thick dose 0.2~2 part；Water, surplus.The specific production stage of the aqueous emulsion are as follows: first by coumoxystrobin and Zhongshengmycin, solvent and
Emulsifier, cosolvent are added together, and make to be dissolved into uniform oily phase；By part water, antifreeze, the others agriculture such as antimicrobial
Medicine auxiliary agent mixes into uniform water phase；The oil phase is added to the aqueous phase while being stirred in the reactor at high speed, slowly plus water
Until reaching phase inversion point, open cutter and carry out high speed shear, and remaining water is added, shearing about half an hour, forms oil-in-water
The aqueous emulsion of type can be made into the aqueous emulsion of the present composition.
The bactericidal composition is microemulsion, the mass fraction of component are as follows: 1~20 part of coumoxystrobin, Zhongshengmycin 1~
20 parts, 10~30 parts of emulsifier, 1~8 part of antifreezing agent, 0.5~10 part of stabilizer, 20~50 parts of Conventional solvents cosolvent.By fourth
Fragrant bacterium ester and Zhongshengmycin are completely dissolved with cosolvent, add the other compositions such as emulsifier, antifreezing agent stabilizer, uniformly mixed
It closes, is eventually adding water, microemulsion can be made into after being sufficiently stirred.
The bactericidal composition is granule, the mass fraction of component are as follows:: 1~20 part of coumoxystrobin, Zhongshengmycin 1
~20 parts, 1~10 part of wetting dispersing agent；0.1~5 part of thickener；0.1~5 part of defoaming agent；Castor oil, surplus are supplied.To have
The effect each components such as ingredient coumoxystrobin and Zhongshengmycin, dispersing agent, stabilizer, defoaming agent and solvent are mixed according to the formula,
After being ground in a sand mill, it is sent into mix in mixer for well-distribution and get product.
The bactericidal composition is microcapsule formulations, the mass fraction of component are as follows:: 1~20 part of coumoxystrobin, Zhongshengmycin
1~20 part, 5~20 parts of urea；5~20 parts of formaldehyde；5~20 parts of emulsifying dispersant；1~5 part of antifreezing agent；Thickener 0.1~2
Part；0.1~0.8 part of defoaming agent；Water, surplus.Urea and the formaldehyde (amount of substance are added in three-necked flask with a mixing device
Than being about l:1.5~2.0), the pH value for adjusting solution with sodium hydroxide solution then heats to 70~80 DEG C to 8~9 or so,
Reaction obtains stable urea resin prepolymer.The raw medicine of a certain amount of coumoxystrobin and Zhongshengmycin is taken to be dissolved in hexamethylene,
And emulsifying dispersant is added in the solution, with being vigorously stirred, it is made into the O/W type using aqueous solution containing emulsified dispersant as water phase
Stable emulsion.Above-mentioned urea resin prepolymer is added in lotion, pH value is adjusted, it is anti-that polymerization occurs under acid catalysed conditions
It answers, is wrapped oil phase substance, form microcapsule granule.Slowly heating, solidification, temperature control the solidification at 40~50 DEG C
Time 1h.Suitable auxiliary agent is added in selection, can obtain stable microcapsule suspending agent.
Wherein above-described emulsifier is selected from calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkyl phenol polyoxy
Ethylene ether sulfosuccinates, styrylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, castor oil polyoxyethylene ether,
Aliphatic acid polyethenoxy base ester, any one of polyoxyethylene aliphatic alcohol ether or more than one a mixture of arbitrary proportions.
The solvent is xylene or biodiesel, toluene, diesel oil, methanol, ethyl alcohol, n-butanol, isopropanol, rosin-based
Vegetable oil code name be ND-45, solvent naphtha, dimethylformamide, dimethyl sulfoxide, one of water equal solvent or more than one
It anticipates than the mixture of composition.
It is LG-3, GY-D1252, GY-D1256, SNWGF-01, lignin that the dispersing agent, which is selected from polycarboxylate code name,
Sulfonate code name is 201107,201108, alkylphenol polyoxyethylene ether methyl ether condensation sulfate, alkylsulfonate calcium salt, naphthalene
Sulfonic formaldehyde condensation compound sodium salt, alkyl phenol polyoxyethylene ether, polyoxyethylene carboxylate, aliphatic amine polyoxyethylene ether, glycerolipid
One or more of fat acid ester polyoxyethylene ether.
The wetting agent is selected from lauryl sodium sulfate, calcium dodecyl benzene sulfonate, and Nekal BX moistens bleeding agent F,
Alkylbenzene sulfonate polyoxyethylene triphen phosphenylic acid salt dimly, spaonin powder, silkworm excrement, one of spaonin powder or a variety of.
The disintegrating agent is selected from bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, in sodium bicarbonate
It is one or more.
The thickener be selected from xanthan gum, carboxymethyl cellulose, carboxyethyl cellulose, methylcellulose, aluminum magnesium silicate,
It is one or more in polyvinyl alcohol.
The stabilizer is selected from sodium citrate, one of resorcinol.
The antifreezing agent is selected from ethylene glycol, propylene glycol, one of glycerine or a variety of.
The defoaming agent is selected from silicone oil, silicone compound, C10-20Saturated fat acids compound, C8-10Fatty alcohol
It is one or more.
The filler is selected from kaolin, diatomite, bentonite, attapulgite, white carbon black, starch, in precipitated calcium carbonate
It is one or more.
The present invention has apparent synergistic effect using coumoxystrobin and Zhongshengmycin as the composite bactericide of effective component, prolongs
The generation of slow key drug resistance, and production and application costs are reduced, it can be used for the improvement of resistance disease.It is mainly used for preventing
Control fruit tree putrefaction disease；Spot defoliation；Rice blast；Root rot；Cucurbits fusarium wilt；Cotton verticillium wilt；Jujube tree rust；Grape
White rot；Panax pseudoginseng black spot；Tealeaves gall of tea, forest rot disease, canker, bleeding disease, defoliation, woods seedling stage are stood withered
Disease, dish Bacteria erwinia, avenae subsp.citrull, rice leaf spot bacteria, apple ring spot germ, fusarium graminearum etc..
Specific embodiment
To make technical solution of the present invention, purpose and advantage are more clearly understood, present invention following specific embodiments
It is illustrated, but the present invention is not limited to these examples.Effect experiment of the invention uses indoor biometrics and field trial phase
In conjunction with mode, unless otherwise instructed, ratio mentioned below is all mass parts ratio.
Embodiment: coumoxystrobin and Zhongshengmycin virulence experiment with different proportions.
1.1 test targets
(germ strain picks up from the Qingdao of Shandong province town Jimo Yi Feng cucumber booth, Jing Haili to cucumber bacterial angular leaf spot bacterium
You isolate and purify and obtain in medicine company Group Plc's research and development centre's raw test room).
1.2 test method
15% coumoxystrobin mother's medicine, 15% Zhongshengmycin mother's medicine, is provided by Chemical Co., Ltd. Shandong Hailier.It will purifying
Aqua sterilisa is added in the slant tube strain crossed, is made into opportunistic pathogen suspension, then is diluted to 107/liter bacteria suspensions, it is spare.First by fourth
It is made into 1000mg/L mother liquor after fragrant bacterium ester and the dissolution of Zhongshengmycin mother medicinal sterile water, is diluted using Shi Zaiyong sterile water.It is (single
Position: mg/litre)
Coumoxystrobin is mixed with Zhongshengmycin to set 5 groups of proportions altogether, on the basis of preliminary experiment, each single dose and each
Proportion sets 5 concentration processing respectively, using the system without medical fluid as blank control (maximum concentration referring to chemicals treatment dilutes).
The processing of each concentration is repeated 4 times, under aseptic technique, by each concentration gradient medicament respectively from low concentration to high concentration successively
4ml is drawn, is added in the sterile conical flask of the sterilising medium containing 36ml melted in advance, sufficiently shakes up, is poured into immediately after straight
In the culture dish of diameter 9cm, corresponding drug containing tablet is made.107/liter bacterial suspension, 200 μ l is added in every ware, then with after sterilizing
Triangular glass stick bacteria suspension in ware is pushed away even, be placed in 28 DEG C of insulating boxs and cultivate.Separately the processing without medicament is set as blank
Control.Each processing is repeated 4 times.
1.3 investigation method
Culture took out culture dish after 48 hours, according to blank control, observed bacteria colony count in each ware of each concentration.
Relative inhibition is calculated according to each processing bacteria colony count:
1.4 synegism evaluation
The synergistic effect of pharmacy mix, i.e. CTC are evaluated according to the co-toxicity coefficient method (CTC) of (1960) Sun&Johnson
≤ 80 be antagonism, and 80 < CTC < 120 are summation action, and CTC >=120 are synergistic effect.
Survey toxicity index (ATI)=standard agent EC50/ reagent agent EC50*100
Percentage composition+medicament B of A medicament in mixtures theoretical toxicity index (TTI)=medicament A 100 mixture of toxicity index *
100 mixture of toxicity index * in B medicament percentage composition
Co-toxicity coefficient (CTC)=mixture surveys toxicity index (ATI)/mixtures theoretical toxicity index (TTI) * 100.
2.1 toxicity test results
The toxicity test of 1 coumoxystrobin of table and Zhongshengmycin to cucumber bacterial angular leaf spot bacterium
As can be seen from the table, the test result of different proportion proportion shows to dilute equal table respectively in effective component ratio
Reveal stronger synergistic effect, wherein with coumoxystrobin: synergistic effect is best when Zhongshengmycin is 1:20~20:1, it is proposed that
Further field control effectiveness test is carried out to suitable proportion 1:20~20:1 or so mixture preparation, to evaluate its field practical application
Effect.
Field trial prevents and treats bacterial blight of rice, the experimental result of cucumber bacterial angular leaf spot
3, field trial prevents and treats bacterial blight of rice
3.1.1 test method
In the Qingdao of Shandong province town Jimo Yi Feng paddy base, test variety is hybrid rice variety for test, every processing 4 times
It repeats, every cell double diagonal line investigates 5 points, and five plants of whole blades when investigation, a situation arises for statistics disease.
Occurring degree is recorded with staging, grade scale is as follows:
0 grade: disease-free；
1 grade: scab heap area accounts for the 5% or less of whole leaf area；
3 grades: scab heap area accounts for the 6%-10% or less of whole leaf area；
5 grades: scab heap area accounts for the 11%-20% or less of whole leaf area；
7 grades: scab heap area accounts for the 21%-50% or less of whole leaf area；
9 grades: scab heap area accounts for 50% or more of whole leaf area.
3.1.2 control time and method
4 times, i.e. investigation of premedication disease index are investigated in test altogether, and 7 days preventive effects are investigated after the 1st medicine, 7 days and 15 after 2 medicines
The investigation of its preventive effect.
3.1.3 drug effect calculation method
Sick leaf rate (the %)=disease number of sheets/investigation total number of sheets × 100
Disease index=∑ (the disease numbers of sheets at different levels × opposite value of series)/(investigation total number of sheets × 9) × 100
Control efficiency (%)=(1- (disease index after disease index × treatment region medicine before blank district medicine)/(blank pair
According to disease index before disease index after area's medicine × treatment region medicine)) × 100.
3.1.4 phytotoxicity investigation method
Whether continuous 7d range estimation medicament has phytotoxicity to crop after application.
Test result and analysis
Coumoxystrobin and Zhongshengmycin control effect for bacterial blight of rice with 5:1 ratio composite bactericide as shown in Table 2
Fruit is apparently higher than coumoxystrobin and Zhongshengmycin single dose, and bactericidal effect is incremented by with the increase of dosage.It is estimated, is being tried according to field
It tests in dosage range, plant growth is normal, and each treatment agent does not occur the phytotoxicity phenomenon to rice, illustrates that it is peace to rice
Complete, it is of great significance, is worthy to be popularized for agricultural volume increase.
3.2 field trials prevent and treat cucumber bacterial angular leaf spot
3.2.1 test method
In Shandong Pingdu City cucumber, test variety is middle peasant No. 8,4 repetitions of every processing, every cell double diagonal line for test
5 points are investigated, 3 plants of cucumber of every investigation record occurring degree with staging, and grade scale is as follows:
0 grade: disease-free；
1 grade: scab heap area accounts for the 5% or less of whole leaf area；
3 grades: scab heap area accounts for the 6%-10% or less of whole leaf area；
5 grades: scab heap area accounts for the 11%-20% or less of whole leaf area；
7 grades: scab heap area accounts for the 21%-50% or less of whole leaf area；
9 grades: scab heap area accounts for 50% or more of whole leaf area.
3.2.2 control time and number
Test is investigated 4 times altogether, and radix is investigated before medicine, is investigated within 15 days 7 days after first time medicine, after second 7 days and medicine.
3.2.3 drug effect calculation method
Sick leaf rate (the %)=disease number of sheets/investigation total number of sheets × 100
Disease index=∑ (the disease numbers of sheets at different levels × opposite value of series)/(investigation total number of sheets × 9) × 100
Control efficiency (%)=(1- (disease index after disease index × treatment region medicine before blank district medicine)/(blank pair
According to disease index before disease index after area's medicine × treatment region medicine)) × 100.
3.2.4 phytotoxicity investigation method
Whether continuous 15d range estimation medicament has phytotoxicity to crop after application.
3.2.5 test result and analysis
3 different disposal of table prevents and treats measurement result to cucumber bacterial angular leaf spot
Show coumoxystrobin and Zhongshengmycin compound preparation for cucumber bacterial angular leaf spot by the above field experiment
Preventive effect is substantially better than single dose, and bactericidal effect is incremented by with the increase of dosage.It is estimated according to field, within the range of experimental dose, is made
Object growth is normal, and no phytotoxicity happens, and is of great significance, is worthy to be popularized for agricultural volume increase.
In conclusion the present invention contains the bactericidal composition of coumoxystrobin and Zhongshengmycin, to bacterial blight of rice and Huang
Melon bacterial angular leaf spot has good control efficiency, and it is safe to Target crops.Compound preparation not only increases preventive effect, and
And prevention and treatment to bacterium is expanded, so this compounded combination has a very important significance in production practice.
Claims (4)
1. a kind of bactericidal composition containing coumoxystrobin and Zhongshengmycin, it is characterised in that: the composition pesticide it is effective at
It is divided into coumoxystrobin and Zhongshengmycin binary built, remaining is auxiliary element, wherein effective component coumoxystrobin and Zhongshengmycin
Mass ratio be 1~50: 50~1.
2. composition pesticide according to claim 1, it is characterised in that: coumoxystrobin and Zhongshengmycin in the formulation total
Weight accounts for the 1%~80% of the entire quality of the pharmaceutical preparations.
3. composition pesticide according to claim 2, it is characterised in that: coumoxystrobin and Zhongshengmycin in the formulation total
Weight accounts for the 1%~50% of the entire quality of the pharmaceutical preparations.
4. composition pesticide according to claim 1 or 2 or 3, it is characterised in that: the dosage form of the composition pesticide is cream
Oil, suspending agent, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, microcapsule formulations, granule.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712031A (en) * | 2021-09-30 | 2021-11-30 | 广西壮族自治区农业科学院 | Bactericide for preventing and treating sugarcane brown spot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712031A (en) * | 2021-09-30 | 2021-11-30 | 广西壮族自治区农业科学院 | Bactericide for preventing and treating sugarcane brown spot |
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