CN108541715A - A kind of bactericidal composition of prevention pear scab - Google Patents
A kind of bactericidal composition of prevention pear scab Download PDFInfo
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- CN108541715A CN108541715A CN201810562697.XA CN201810562697A CN108541715A CN 108541715 A CN108541715 A CN 108541715A CN 201810562697 A CN201810562697 A CN 201810562697A CN 108541715 A CN108541715 A CN 108541715A
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- CN
- China
- Prior art keywords
- pear scab
- fungicide
- composition
- prochloraz
- prevention
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- A01N43/22—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 rings with more than six members
-
- 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
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/38—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof
-
- 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
Abstract
The invention discloses a kind of bactericidal composition of prevention pear scab and its fungicide of preparation.The composition includes the component of following mass percent：55~78% prochlorazs, 15%~38% brassinosteroid, 1~7% graphene oxide；Prochloraz, plant extracts brassinosteroid and graphene oxide are carried out mixture by the composition of prevention pear scab of the present invention, within the scope of special ratios, synergistic effect is mutually played between three, also ensure have good inhibitory activity of the composition for pear scab while reducing prochloraz usage amount, it is suitable with the inhibiting effect of single dose prochloraz.The mixture composition is used after fungicide is made, can effectively preventing pear scab, while the usage amount of prochloraz can also be reduced, slow down and/or prevent pear scab pathogen and resistance is generated to prochloraz.
Description
Technical field
The invention belongs to technical field of pesticide, more particularly, to a kind of bactericidal composition of prevention pear scab.
Background technology
There are one of the main fruit trees seeds that cultivation and China are planted extensively in all Temperate Region in China to pears in the world, money Source is abundant, and cultivation history is long.Pears disease is always to limit one of the Main Factors of pears industry development.Pear scab, by partly knowing The black star spore (VenturiapirinumAderh) of pears of bacterium subphylum causes, also known as shot hole, mist disease, is worldwide one kind The important disease of pears, in North America, occurrence degree is serious, and in 80 multiple diseases for endangering China pear tree, generally occurs and more Serious equally first-elected pear scab.Pear scab has generation in China north and south pears producing region, especially with Liaoning, Hebei, mountain East, Shaanxi, Henan, the harm of the Shanxi producing regions Deng Li are serious.When falling ill serious, not only cause early stage a large amount of fallen leaves, and endanger fruit It is real, cause young fruit lopsided, cannot normally expand；The 2nd annual bearing of disease tree is reduced simultaneously, seriously affects the yield and quality of the operatic circle, Cause heavy economic losses.In the plant disease epidemic time, for sick leaf rate up to 90%, diseased fruit rate seriously affects the excellent of pears up to 50%~70% Matter high yield.It there is no the Pear varieties of high scab resistant at present, the prevention of pear scab is still based on chemical prevention.
Prochloraz is a kind of wide-spectrum bactericide, is had to various crop disease caused by sac fungus and Fungi Imperfecti apparent Preventive effect, can also be mixed with most of fungicide, Insecticides (tech) ＆ Herbicides (tech), there is preferable control effect.To field crop, water Multiple diseases on fruit vegetable, turf and ornamental plant have treatment and eradicant action.For scientific and reasonable medication, built in production View is used with using different role mechanism fungicide or rotation uses, and disease is delayed to develop immunity to drugs, and effectively controls the same of scab When, reduce dosage.
Invention content
The technical problem to be solved by the present invention is to overcome the defect of the above-mentioned prior art and deficiency, a kind of prevention pears are provided The bactericidal composition of scab.
It is a further object to provide a kind of fungicide of prevention pear scab.
The above-mentioned purpose of the present invention is to give realization by the following technical programs：
In order to solve the above-mentioned technical problem, inventor has carried out composition research to the present invention to prochloraz.By largely giving birth to Object measures screening, has been surprisingly found that prochloraz is compounded with brassinosteroid, graphene oxide with certain proportion, has to pear scab Significant synergistic effect.
A kind of bactericidal composition of prevention pear scab, includes each component of following weight percent：55~78% miaow acyls Amine, 15%~38% brassinosteroid, 1~7% graphene oxide.
Disclose a variety of prochlorazs and the fungicide after other fungicide compoundings in fact in the prior art, but most of is to adopt Made of prochloraz and other chemical bactericide mixtures.What it is due to use is all chemical bactericide, and a variety of active ingredients is mixed With the unfriendly of rear fungicide environment multipair greatly, pollution is stronger, and is easy to generate beneficial insect certain toxic action, no Meet the starting point of environment friendly agricultural.
Brassinosteroid is a kind of novel plant endogenous hormones, is first active rape element being separated Steroid (Brassinosteroids, BRs) is to be known as activity highest efficiently, wide spectrum, nontoxic plant in the world Growth hormone.It can fully be excited in plant in potential, promoted plant growth and increased crop yield, improve the cold-resistant of crop Property, disease-resistant, the saline-alkaline tolerance of crop are improved, the resistance of reverse of crop is made to enhance, poisoning of the herbicide to crop can be mitigated.
Graphene oxide is that graphene obtains after peroxidating, and graphene has good antibacterial action, compared to stone Black alkene, graphene oxide is not easy to reunite, soluble easily in water, and equally has good antibacterial action.
The composition of prevention pear scab of the present invention mixes prochloraz, brassinosteroid and graphene oxide Match, within the scope of special ratios, synergistic effect is mutually played between three, also guarantee group while reducing prochloraz usage amount Have good inhibitory activity of the object for pear scab is closed, it is suitable with the inhibiting effect of single dose prochloraz.
Preferably, the composition includes each component of following weight percent：70~78% prochlorazs, 17%~28% Brassinosteroid, 2~5% graphene oxides.
Preferably, the composition includes each component of following weight percent：75% prochloraz, in 21.5% rape element Ester, 3.5% graphene oxide.
Application of the bactericidal composition in the fungicide for preparing prevention pear scab is also claimed in the present invention.
A kind of fungicide comprising any of the above-described bactericidal composition is also within the scope of the present invention.
Preferably, account for the fungicide gross mass 1%~80% of the composition.
Preferably, account for the fungicide gross mass 1%~50% of the composition.
Preferably, the dosage form of the fungicide be missible oil, it is suspending agent, wettable powder, water dispersible granules, aqueous emulsion, micro- Emulsion, microcapsule formulations or granule.
Preferably, the fungicide also includes auxiliary element pesticide-acceptable.
Meanwhile application of any of the above-described fungicide in preventing pear scab is also in the scope of the present invention.
Compared with prior art, the invention has the advantages that：
The composition of prevention pear scab of the present invention is by prochloraz, plant extracts brassinosteroid and graphite oxide Alkene carries out mixture and mutually plays synergistic effect between three within the scope of special ratios, when 75% prochloraz, 21.5% rape When plain lactone and 3.5% graphene oxide compound, co-toxicity coefficient is up to nearly 142.The bactericidal composition of the present invention is reducing miaow Also ensure that there is good inhibitory activity, the inhibiting effect with single dose prochloraz for pear scab while amide usage amount Quite.The mixture composition is used after fungicide is made, can effectively preventing pear scab, while miaow acyl can also be reduced The usage amount of amine slows down and/or prevents pear scab pathogen and generates resistance to prochloraz.
Specific implementation mode
Further illustrated the present invention below in conjunction with specific embodiment, but embodiment the present invention is not done it is any type of It limits.Unless stated otherwise, the present invention uses reagent, method and apparatus is the art conventional reagent, methods and apparatus.
Unless stated otherwise, following embodiment agents useful for same and material are purchased in market.
Embodiment 1
It is a kind of prevention pear scab composition, including component have：Prochloraz, brassinosteroid and graphene oxide, The mass percent of wherein 3 kinds component mixtures is as shown in table 1.
The mass percent of 13 kinds of component mixtures of table
Embodiment 2
The Toxicity Determination of composition described in table 1, the process of test are as follows：
Test object：Pear scab wild strain melon scab cladosporium sp (Cladosporium cucumerinum).
The preparation method of composition 1~8 in table 1 is as follows：3 kinds of components are weighed according to the quality accounting in table 1, are then divided 3 kinds of components are not dissolved in ethanol solution, then 3 kinds of ethanol solutions are slowly mixed together while stirring, 3h or more is stirred for after mixing, Mother liquor can be prepared, it is spare.
The inhibiting rate of 1~8 pair of pear scab wild strain of composition is measured using growth rate method, and one group of blank is set Control group CK the results are shown in Table respectively using single dose prochloraz, brassinosteroid, graphene oxide as comparative example shown in 2.
The inhibiting rate result of table 2 composition, 1~8 pair of pear scab wild strain
As can be seen from Table 2, under the conditions of same concentrations, the inhibition of 1~8 pair of pear scab wild strain of composition It is substantially better than single dose prochloraz, and when a concentration of 10 μ g/mL, single dose brassinosteroid and single dose graphene oxide are to pear scab The inhibiting effect of wild strain is very weak, and brassinosteroid there is no effect, needs under a high concentration condition, can just show Certain inhibiting effect, but inhibiting rate is still very low.
It is same that the EC of composition 1~8 and 3 kind of single dose to pear scab wild strain is tested using the above method50Value.And it adopts Co-toxicity coefficient (CTC) is calculated with Sun Yunpei's Method to evaluate mixed effect.
Toxicity index TI (B)=(EC of standard agent A50The EC of/B agent50)×100
Survey toxicity index (ATI)=(standard agent EC50/ reagent agent EC50) × 100
Percentage composition+B the medicament toxicity index of A in theoretical toxicity index (TTI)=A medicament toxicity index × mixture × mixed The percentage composition of B in agent.
Work as co-toxicity coefficient (CTC)=[mixture surveys toxicity index (ATI)/mixtures theoretical toxicity index (TTI)] × 100 CTC≤80, then composition show as antagonism, as 80 ＜ CTC ＜ 120, then composition shows as summation action, when CTC >= 120, then composition show as synergistic effect.
The EC measured50Value and co-toxicity coefficient are shown in Table 3.
Table 3
| Grouping | EC50/μg/mL | ATI | TTI | Co-toxicity coefficient |
| 1 | 1.8 | 58.33333 | 55.30975 | 105.4666 |
| 2 | 1.75 | 60 | 58.24713 | 103.0094 |
| 3 | 1.58 | 66.4557 | 61.21188 | 108.5667 |
| 4 | 1.63 | 64.41718 | 65.14663 | 98.8803 |
| 5 | 1.45 | 72.41379 | 68.12506 | 106.2954 |
| 6 | 1.24 | 84.67742 | 70.16088 | 120.6904 |
| 7 | 0.99 | 106.0606 | 75.16144 | 141.1104 |
| 8 | 1.04 | 100.9615 | 78.16725 | 129.1609 |
| Single dose prochloraz | 1.05 | 100 | - | - |
| Single dose brassinosteroid | 400 | 0.2625 | - | - |
| Single dose graphene oxide | 35 | 3 | - | - |
As can be known from Table 3, three kinds of components show as summation action in composition 1~5, and 3 kinds of components in composition 6~8 Show as synergistic effect, wherein the co-toxicity coefficient of composition 7 is maximum, has played maximum synergistic effect between 3 kinds of components, and group The quality accounting for closing prochloraz in object 7 is 75%, but its EC50Almost suitable with single dose prochloraz, larger proportion reduces miaow The usage amount of amide can effectively avoid and/or delay generation of the pear scab germ to prochloraz resistance.
Embodiment 3
It is active constituent with composition 6~8, can be processed into according to the prevention environment and requirement of pear scab Suitable dosage form is used, wherein commonly use suitable dosage form be wettable powder, water dispersible granules, suspending agent, missible oil or Granula.
Wherein, when being processed into wettable powder, the quality percentage accounting of each raw material is：Any in above-mentioned composition 1~8 Composition 15%~45%, dispersant are 0.5%~10%, and wetting agent is 1%~9%, then complements to 100% with filler.
When being processed into water dispersible granules, the quality percentage accounting of each raw material is：Any combination in above-mentioned composition 1~8 Object 15%~80%, dispersant are 1%~8%, and wetting agent is 2%~8%, and bonding agent is 0.5%~5%, and disintegrant is 0.2%~5%, then 100% is complemented to filler.
When being processed into suspending agent, the quality percentage accounting of each raw material is：Any combination object in above-mentioned composition 1~8 10%~30%, thickener is 0.2%~2%, and antifoaming agent is 0.2%~1%, and antifreezing agent is 0.5%~5%, then uses water Complement to 100%.
When being processed into missible oil, the quality percentage accounting of each raw material is：Any combination object 10% in above-mentioned composition 1~8 ~20%, emulsifier be 2~8%, cosolvent be 0.2%~2%, stabilizer be 0.2%~1%, antifreezing agent be 0.5%~ 5%, then 100% is complemented to solvent.
When being processed into granule, the quality percentage accounting of each raw material is：Any combination object in above-mentioned composition 1~8 10%~80%, bonding agent is 0.5%~5%, and dispersant is 1%~8%, and disintegrant is 0.2%~5%, and stabilizer is 0.5%~5%, then 100% is complemented to filler.
The various auxiliary agents being previously mentioned in above-mentioned dosage form are common auxiliary agent during pesticide processing, existing on the market, It can directly choose.The concrete content and dosage form of composition in the fungicide being processed into, can according to the needs of actual use, into The flexible selection of row and allotment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is protected to the present invention The limitation of shield range can also be made on the basis of above description and thinking for those of ordinary skill in the art Other various forms of variations or variation, there is no necessity and possibility to exhaust all the enbodiments.It is all the present invention All any modification, equivalent and improvement etc., should be included in the protection of the claims in the present invention made by within spirit and principle Within the scope of.
Claims (10)
1. a kind of bactericidal composition of prevention pear scab, which is characterized in that include each component of following weight percent：55~ 78% prochloraz, 15%~38% brassinosteroid, 1~7% graphene oxide.
2. bactericidal composition according to claim 1, which is characterized in that include each component of following weight percent：70 ~78% prochloraz, 17%~28% brassinosteroid, 2~5% graphene oxides.
3. bactericidal composition according to claim 1, which is characterized in that include each component of following weight percent：75% Prochloraz, 21.5% brassinosteroid, 3.5% graphene oxide.
4. application of any one of claims 1 to 3 bactericidal composition in the fungicide for preparing prevention pear scab.
5. a kind of fungicide of prevention pear scab, which is characterized in that include any one of the claims 1 to 3 Bactericidal composite Object.
6. preventing the fungicide of pear scab according to claim 5, which is characterized in that the composition accounts for the sterilization The 1%~80% of agent gross mass.
7. preventing the fungicide of pear scab according to claim 6, which is characterized in that the composition accounts for the sterilization The 1%~50% of agent gross mass.
8. according to the fungicide of any prevention pear scab of claim 5~7, which is characterized in that the agent of the fungicide Type is missible oil, suspending agent, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, microcapsule formulations or granule.
9. according to the fungicide of any prevention pear scab of claim 5~7, which is characterized in that the fungicide also wraps Contain auxiliary element pesticide-acceptable.
10. application of any fungicide of claim 5~7 in preventing pear scab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562697.XA CN108541715A (en) | 2018-06-01 | 2018-06-01 | A kind of bactericidal composition of prevention pear scab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562697.XA CN108541715A (en) | 2018-06-01 | 2018-06-01 | A kind of bactericidal composition of prevention pear scab |
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| Publication Number | Publication Date |
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| CN108541715A true CN108541715A (en) | 2018-09-18 |
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| CN201810562697.XA Withdrawn CN108541715A (en) | 2018-06-01 | 2018-06-01 | A kind of bactericidal composition of prevention pear scab |
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- 2018
- 2018-06-01 CN CN201810562697.XA patent/CN108541715A/en not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication | Application publication date: 20180918 |