CN109744249A - A kind of bactericidal composition - Google Patents
A kind of bactericidal composition Download PDFInfo
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- CN109744249A CN109744249A CN201711060835.6A CN201711060835A CN109744249A CN 109744249 A CN109744249 A CN 109744249A CN 201711060835 A CN201711060835 A CN 201711060835A CN 109744249 A CN109744249 A CN 109744249A
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- bronopol
- bactericidal composition
- rosickyite azoles
- disease
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Abstract
The invention belongs to a kind of technical field of pesticide, disclose a kind of bactericidal composition, using rosickyite azoles, bronopol as principle active component, rosickyite azoles, bronopol mass ratio be 1:35~35:1, quality hundred content of the sum of the two in Herbicidal combinations be 1-50%.The invention also discloses the Herbicidal combinations can be prepared into wettable powder, water dispersible granules, aqueous suspension agent, granule, missible oil, microemulsion, aqueous emulsion, microcapsule suspending agent, and for preventing and kill off rice blast, citrus bacterial canker disease.Bactericidal composition of the invention is applied widely, prevent and prevention and treatment bactericidal effect is good, at low cost.
Description
Technical field
The invention belongs to technical field of pesticide, especially fungicide field, and in particular to a kind of sterilization group of two-spot compounding
Close object and its application.
Background technique
According to statistics, national cereal crops from production into storage, because of at least 10%- caused by disease, worm, grass, the plague of rats
15% loss；Wherein cause the example of loss also too numerous to enumerate by disease.In today of development in pluralism, the prevention and treatment of disease is main
There are cultural control, biological control and chemical prevention.Cultural control and disease-resistant, the pest-resistant work by tillage translocation or utilization breeding
The method of article kind prevention and treatment harmful organism.Cultural control has a long history, additional without increasing when preventing harmful organism
Cost, and it is harmless to the world, but due to being limited by factors such as season, areas, cultural control can only have prevention effect to disease,
But there cannot be good governance role after disease generation.Biological control refers to using the correlation between species, with a kind of or
The method of a kind of biological inhibition another kind or another kind of biology.Although recent domestic achieves centainly in field of biological control
Progress, but implement that there are still a series of obstacles.Therefore, Agro-chemicals control is relied on to be still in modern agriculture not
The a part that can or lack.
Rice blast is the great disease during Rice Cropping, after the onset generally meeting underproduction 3%-50%, especially sternly
Even No kernels or seeds are gathered, as in a year of scarcity for the field of weight.Variety diversity gradually different with genetic background with the utilization of disease-resistant variety in production at present
Between plant carry out comprehensively control rice blast generation and harm.But since the small clock of germ physiology is complicated and variability is big, Variety Disease-resistance
Property be difficult to persistently, therefore various Rice Cropping areas rely on Agro-chemicals control still to control the occurrence degree of disease.
Citrus bacterial canker disease is a kind of serious harm citrus branch as caused by carpet straw colour monospore citrus pvs oryzae and oryzicola, Ye Jiguo
Real bacterial disease is the worldwide quarantine object including China, which has generation in some citrus producing regions in China, especially
It is aggrieved serious with provinces and regions such as Guangdong, Guangxi, Hunan, Fujian, causes fallen leaves, spike top, weakens tree vigo(u)r, serious to cause to fall
Fruit influences orange yield and fruit quality.Since the disease is quarantine disease, developed country mostly uses large area to destroy by fire at present
Elimination method, but such method cost is very high, implements relatively difficult in China citrus producing region, the prevention and treatment of citrus bacterial canker disease is still
It is the major issue of Citrus Industry, cannot effectively eradicates, China epidemic-stricken area epidemic disease is based on chemical prevention, nevertheless, canker
Still occur every year, prevent and treat the conventional dose of canker at present mainly based on copper agent, include Bordeaux mixture, hydroxide
Copper, burnt ammonia copper, can kill at copper oxychloride；However, the long-time service of copper agent leads to the accumulation of copper in soil and environment, make
The pollution of pairs of environment.In addition, streptomysin, gold alloy hydride etc. and its mixed bactericide, such as it is more it is peaceful, cuprammonium mixture can be killed to obtain
It is widely used in the chemical prevention of canker, usage amount is growing on and on, and effect is general.
Rosickyite azoles is a kind of efficient, safety, broad spectrum activity imidazoles fungicide and China agriculture with independent intellectual property rights
With fungicide, there is significant preventive effect to plurality of plant diseases, and has certain production-increasing function；But using after many years, germ by
Drug resistance is gradually produced, drug effect is caused to reduce.
Bronopol chemical name is 2- bromo-2-nitro-1,3-propylene glycol.The compound is used as a kind of industrial sterilization earliest
Agent.It is widely used in water process, leather, papermaking, cosmetics anti-corrosion etc..It is exploited for agricultural seed treatment again afterwards.Bromine
Nitre alcohol all has high activity to most bacteriums and fungi, can kill or inhibit germ completely at much lower concentrations
Increase.
It there is no document to compound with patent disclosure rosickyite azoles with bronopol at present, rice blast and citrus bacterial canker disease can be prevented
It can control.
Summary of the invention
Based on the above situation, the purpose of the present invention is to provide a kind of bactericidal composition and its preparations.The bactericidal composition
Applied widely, prevention and prevention and treatment bactericidal effect are good, at low cost, can effectively prevent rice blast and citrus bacterial canker disease,
Wettable powder, water dispersible granules, aqueous suspension agent, granule, missible oil, microemulsion, aqueous emulsion, microcapsule suspension can be prepared into
Agent.
Goal of the invention to realize the present invention, the invention provides the following technical scheme:
A kind of bactericidal composition, it is characterised in that the bactericidal composition includes effective component rosickyite azoles and bronopol, this two
The mass ratio of kind effective component is 1:35~35:1, preferably 1:10~10:1；Sum of the two accounts for the percentage composition of bactericidal composition
For 1-50%.
In two-spot compound preparation of the invention, other than effective component, the auxiliary agent allowed on pesticide can be also added, to prepare
At any one dosage form.It is preferred that being processed into wettable powder, water dispersible granules, aqueous suspension agent, granule, missible oil, microemulsion, water
Emulsion, microcapsule suspending agent.
The insecticides adjuvant includes dispersing agent, wetting agent, disintegrating agent, binder, adsorbent, antifreezing agent, preservative, increasing
Thick dose etc., these auxiliary agents use common well known compound.
Instant component is reasonable, combines treatment with prevention, and bactericidal effect is good, sterilizes spectrum width, and its activity and sterilization effect
The active simple superposition of fruit not instead of each component, with significant synergistic effect, to crop safety, to rice blast and
Citrus bacterial canker disease has excellent prevention and treatment effect.
Specific embodiment
12% rosickyite azoles bronopol wettable powder of S1
Rosickyite azoles 10%, bronopol 2%, dispersing agent alkylphenol polyoxyethylene phosphate 0.06%, wetting agent dodecane
Base sodium sulphate 0.04%, filler A Tashi are supplied.Wettable powder product of the invention is made according to conventional formulation method.
30% rosickyite azoles bronopol water dispersible granules of S2
Rosickyite azoles 2%, bronopol 28%, dispersing agent naphthalenesulfonic acid-formaldehyde condensate 1.5%, wetting agent octadecyl fourth two
Sour sodium 1%, disintegrating agent ammonium sulfate 3%, binder soluble starch 4%, filler white carbon black are supplied.According to conventional formulation method system
Obtain water dispersible granules product of the invention.
18% rosickyite azoles bronopol aqueous suspension agent of S3
Rosickyite azoles 16%, bronopol 2%, dispersing agent sodium polycarboxylate 0.08%, wetting agent neopelex
0.02%, thickener Arabic gum 0.2%, thixotropic agent white carbon black 0.3%, antifreezing agent propylene glycol 0.5%, preservative sodium citrate
0.1%, deionized water is supplied.Match according to conventional formulation method and aqueous suspension agent product of the invention is made.
2% rosickyite azoles bronopol granule of S4
Rosickyite azoles 1%, bronopol 1%, adhesive dextrin 1.5%, filler clay are supplied.Match according to conventional formulation method
Granule product of the invention is made.
25% rosickyite azoles bronopol missible oil of S5
Rosickyite azoles 5%, bronopol 20%, emulsifier neopelex 20%, solvent heavy hydrocarbon based solvent oil are supplied.
Match according to conventional formulation method and missible oil product of the invention is made.
38% rosickyite azoles bronopol microemulsion of S6
Rosickyite azoles 6%, bronopol 32%, emulsifier polyoxyethylene alkyl ether 10%, solvent xylene 7%, deionization are mended
Foot.Match according to conventional formulation method and microemulsion product of the invention is made.
44% rosickyite azoles bronopol aqueous emulsion of S7
Fluorine azoles bacterium acyl azanol 4%, emulsifier polyoxyethylene base phenylate 13%, solvent cyclohexanone 8%, is gone rosickyite azoles 40%
Ionized water supplies according to conventional formulation method with aqueous emulsion product of the invention is made.
26% rosickyite azoles bronopol microcapsule suspending agent of S8
Rosickyite azoles 6%, bronopol 20%, macromolecule cyst material tolyl isocyanate 10%, solvent trimethylbenzene 10%,
Emulsifier castor oil polyoxyethylene ether 6%, dispersing agent sodium lignin sulfonate 2%, deionized water are supplied.According to conventional preparation side
Method, which is matched, is made microcapsule suspending agent product of the invention.
Comparative example
20% bronopol wettable powder of D1
20% bronopol wettable powder is conventionally made.
10% rosickyite azoles aqueous suspension agent of D2
10% rosickyite azoles aqueous suspension agent is conventionally made.
1) toxicity determination test
1. the synergy to rice blast mixture measures
Subjects: rice blast
Raw medicine is made to the experimental pharmacy of needs, test method refers to " farm-chemical indoor determination test rule fungicide
6th part: mixed synergy measurement " and " the 8th part of farm-chemical indoor determination test rule fungicide: prevention and treatment rice
Rice blast tests pot-culture method ".
Spore suspension preparation: experiment is cultivated on suitable culture medium with pathogen, or by diseased tissues moisturizing culture,
After spore to be generated, with spore under sterile washing, and with layer 2-4 filtered through gauze, it is 1X10 that concentration, which is made,5A spore/mL's is outstanding
Supernatant liquid, it is spare.
Medicament is prepared: water soluble medicament distilled water dissolved dilution.Other medicaments select suitable solvent (dimethyl formyl
Amine) dissolution, it is diluted with 0.1% Tween 80 aqueous solution.According to agent activity, 5-7 series mass concentration, organic solvent are set
Final content is usually no more than 0.5-1%.Preparation is directly diluted with water.
Inoculation and culture: spore suspension spray inoculation is used.Protective effect test is inoculated with for 24 hours after pharmaceutical treatment；Treatment
Experiment on Function is inoculated with for 24 hours before chemicals treatment；Disease-resistant activity test is inoculated in chemicals treatment 3-7d.Inoculation is moved back to heat preservation
(95% or more relative humidity keeps blade face to have moisture condensation in case.25-26 DEG C of temperature) moisturizing culture is for 24 hours under dark condition.Then exist
25-26 DEG C, 12h alternation of light and darkness (intensity of illumination 20000lx), cultivate 7d under the conditions of relative humidity 85-90%.
According to survey data, the disease index and control efficiency of each processing are calculated.Pass through preventive effect probability value and series of concentrations
Logarithm between linear regression analysis, find out the EC of each medicament50Value.
The co-toxicity coefficient (CTC) of mixture is calculated with Sun Yunpei's Method, and medicament is evaluated to the activity of germ with this.Compounding
The co-toxicity coefficient (CTC) >=120 of preparation shows as synergistic effect；CTC≤80 show as antagonism；80 < CTC < 120 performance
For summation action.
1 rosickyite azoles of table is with bronopol composition to the indoor toxicity test of rice blast
| Chemicals treatment | EC50(mg/L) | ATI | TTI | CTC |
| Rosickyite azoles (A) | 10.57 | 101.98 | _ | _ |
| Bronopol (B) | 7.06 | 158.65 | _ | _ |
| A:B=35:1 | 6.72 | 182.52 | 109.28 | 167.02 |
| A:B=30:1 | 6.14 | 204.37 | 111.82 | 182.77 |
| A:B=25:1 | 5.67 | 237.86 | 115.64 | 205.69 |
| A:B=20:1 | 5.14 | 289.71 | 118.75 | 243.97 |
| A:B=15:1 | 4.85 | 325.48 | 126.37 | 257.56 |
| A:B=10:1 | 4.32 | 341.75 | 137.82 | 247.97 |
| A:B=5:1 | 3.59 | 428.91 | 142.39 | 301.22 |
| A:B=1:1 | 2.83 | 500.12 | 150.72 | 331.82 |
| A:B=1:5 | 1.92 | 546.82 | 156.86 | 348.60 |
| A:B=1:10 | 2.27 | 520.37 | 162.79 | 319.66 |
| A:B=1:15 | 2.86 | 498.15 | 169.54 | 293.82 |
| A:B=1:20 | 3.36 | 463.79 | 173.59 | 267.18 |
| A:B=1:25 | 3.91 | 391.26 | 176.82 | 221.28 |
| A:B=1:30 | 4.15 | 352.97 | 179.67 | 167.02 |
| A:B=1:35 | 4.83 | 329.15 | 181.26 | 182.77 |
Table 1 can be seen that rosickyite azoles and compound in the mass ratio range of 1:35-35:1 with bronopol, CTC value all >
120, synergistic effect is shown as to rice blast；Wherein the proportion of rosickyite azoles and bronopol is 1:5, is showed rice blast
For synergistic effect, CTC value is 348.60.
2. the synergy to citrus bacterial canker disease mixture measures
Subjects: citrus bacterial canker disease
Raw medicine is made to the experimental pharmacy of needs, test method refers to " farm-chemical indoor determination test rule fungicide
6th part: mixed synergy measurement " and " the 16th part of farm-chemical indoor determination test rule fungicide: inhibit bacterium
Increment tests turbidity method ".
2 rosickyite azoles of table is with bronopol composition to the indoor toxicity test of citrus bacterial canker disease
| Chemicals treatment | EC50(mg/L) | ATI | TTI | CTC |
| Rosickyite azoles (A) | 11.98 | 102.67 | _ | _ |
| Bronopol (B) | 6.15 | 196.58 | _ | _ |
| A:B=35:1 | 5.98 | 211.92 | 106.23 | 199.49 |
| A:B=30:1 | 5.71 | 246.87 | 108.75 | 227.01 |
| A:B=25:1 | 5.42 | 269.25 | 110.28 | 244.15 |
| A:B=20:1 | 5.29 | 301.72 | 115.17 | 261.98 |
| A:B=15:1 | 4.96 | 336.74 | 120.84 | 278.67 |
| A:B=10:1 | 4.68 | 398.13 | 132.08 | 301.43 |
| A:B=5:1 | 4.17 | 436.85 | 139.72 | 312.67 |
| A:B=1:1 | 3.36 | 528.67 | 146.36 | 361.21 |
| A:B=1:5 | 2.05 | 581.23 | 150.19 | 386.99 |
| A:B=1:10 | 2.64 | 539.14 | 156.28 | 344.98 |
| A:B=1:15 | 3.09 | 501.27 | 161.37 | 310.63 |
| A:B=1:20 | 3.48 | 489.71 | 169.82 | 288.37 |
| A:B=1:25 | 4.02 | 438.86 | 172.65 | 254.19 |
| A:B=1:30 | 4.37 | 401.28 | 178.59 | 224.69 |
| A:B=1:35 | 4.86 | 398.72 | 181.23 | 220.01 |
Table 2 can be seen that rosickyite azoles and compound in the mass ratio range of 35:1-1:35 with bronopol, CTC value all >
120, synergistic effect is shown as to citrus bacterial canker disease；Wherein the proportion of rosickyite azoles and bronopol is 1:5, the increasing to citrus bacterial canker disease
Effect effect is most significant, and CTC value is 386.99.
2) field control effectiveness test
Reagent agent: embodiment S1-8.
Comparison medicament: comparative example 1-2.
Subjects: rice blast, citrus bacterial canker disease.
Test method:
Rice blast: hand-powered knapsack sprayer even spraying, for the first time application are administered in rice cut phase, second
In rice full heading time.
Citrus bacterial canker disease: hand-powered knapsack sprayer even spraying, by the uniform spraying blade tow sides of medical fluid and fruit
On；It is administered after the spring tip is cut certainly for the first time, before the onset；Before the onset of young fruit (30d after fallen flowers), third time is administered second of spray
It catches an illness to prevent fruit and summer shoot, the 4th application is caught an illness to prevent fruit and autumn growth.
Investigation and statistical method:
Rice blast: state of an illness radix is investigated before application, 7d, 14d, 21d are respectively looked into once after application.Every cell takes 5 at random
Point, every is investigated 20 plants, and the whole blades of every plant of investigation, every leaf accounts for the percentage classification record of leaf area according to scab.Classification
Method:
As unit of fringe
0 grade: disease-free；
1 grade: every 5% or less fringe loss (individual branch stalk morbidities)；
3 grades: every fringe loss 6-20% (morbidity of one third or so branch stalk)；
5 grades: every fringe loss 21-50% (fringe neck or main shaft morbidity, grain half are flat)；
7 grades: every fringe loss 51-70% (fringe neck morbidity, big portion's shrivelled kernel)；
9 grades: every fringe loss 71-100% (fringe neck morbidity, cause dead ears).
Disease index=[(the disease numbers of sheets at different levels × opposite value of series)/(investigation total leaf number × 9) Σ] × 100
Control efficiency=(blank control disease index-chemicals treatment disease index)/blank control disease index × 100
Citrus bacterial canker disease: two weeks investigates preventive effect after spray every time.There is generation in the selection of each experiment process cell
The mandarin tree of table investigates 4 plants, every plant by east, south, west, north, in 5 different directions investigate the spring tips, summer shoot, each 20 leaves of autumn growth
And 20 fruits, i.e., each 100 leaves of the every plant investigation spring tip, summer shoot, autumn growth blade and 100 fruit (less than 100 fruit investigation
Whole fruits on tree), aggrieved blades and fruit at different levels are investigated, disease index and control efficiency are calculated.
Classification:
0 grade: blade disease-free spot；
1 grade: leaf spot lesion 1-5；
3 grades: leaf spot lesion 6-10；
5 grades: leaf spot lesion 11-15；
7 grades: leaf spot lesion 16-20；
9 grades: leaf spot lesion 20 or more.
According to disease index, control efficiency is calculated:
Disease index=[(the disease numbers of sheets at different levels × corresponding sick series)/(investigation total number of sheets × 9) Σ] × 100
Control efficiency=(control disease index-processing disease index)/control disease index × 100%
Table 3 prevents and treats rice blast field trial
Table 4 prevents and treats citrus bacterial canker disease field trial
As can be seen that the present invention is used in combination by two kinds of effective component bronopols and rosickyite azoles, to rice from table 3,4
Rice blast, citrus bacterial canker disease preventive effect be higher than pesticide be used alone preventive effect, achieve significant synergistic effect, improve entirety
Preventive effect.
To rice, citrus security survey, observed within several days after the 1st day and medicine after spray, each test process is to rice, mandarin orange
Tangerine occurs without phytotoxicity phenomenon.
It is known that the illustrative embodiments that above-described embodiment uses only for illustrating inventive principle, however it is of the invention
It is not limited only to this, those skilled in the art can make various improvement and change in the case where not departing from real situation of the present invention, these
It improves and change also belongs to protection scope of the present invention.
Claims (4)
1. a kind of bactericidal composition, it is characterised in that: effective component is rosickyite azoles and bronopol, the rosickyite azoles and bronopol
Mass ratio be 1:35 ~ 35:1, the rosickyite azoles and mass percentage of the bronopol sum of the two in bactericidal composition
For 1-50%.
2. bactericidal composition according to claim 1, it is characterised in that: the mass ratio of propanethiol and bronopol be 1:10 ~
10:1。
3. bactericidal composition according to claim 1, it is characterised in that: can be prepared into wettable powder, water dispersible granules,
Aqueous suspension agent, granule, missible oil, microemulsion, aqueous emulsion, microcapsule suspending agent.
4. bactericidal composition described in any one of -3 is in prevention and treatment rice blast and citrus bacterial canker disease according to claim 1
Application.
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| CN201711060835.6A CN109744249A (en) | 2017-11-01 | 2017-11-01 | A kind of bactericidal composition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711060835.6A CN109744249A (en) | 2017-11-01 | 2017-11-01 | A kind of bactericidal composition |
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| Publication Number | Publication Date |
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| CN109744249A true CN109744249A (en) | 2019-05-14 |
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ID=66398271
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113396920A (en) * | 2021-05-07 | 2021-09-17 | 广东省农业科学院果树研究所 | Application of albendazole in preparation of pesticide bactericide for preventing and treating postharvest chloromycete of citrus |
-
2017
- 2017-11-01 CN CN201711060835.6A patent/CN109744249A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113396920A (en) * | 2021-05-07 | 2021-09-17 | 广东省农业科学院果树研究所 | Application of albendazole in preparation of pesticide bactericide for preventing and treating postharvest chloromycete of citrus |
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Application publication date: 20190514 |