CN113575602A - Powdery mildew resistant bactericidal active agent - Google Patents
Powdery mildew resistant bactericidal active agent Download PDFInfo
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- CN113575602A CN113575602A CN202111070055.6A CN202111070055A CN113575602A CN 113575602 A CN113575602 A CN 113575602A CN 202111070055 A CN202111070055 A CN 202111070055A CN 113575602 A CN113575602 A CN 113575602A
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- active agent
- bactericidal active
- powdery mildew
- fluxapyroxad
- activated ester
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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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms
-
- 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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
-
- 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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
-
- 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
- A01N47/24—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing the groups, or; Thio analogues thereof
Abstract
The invention relates to the technical field of pesticides, and particularly relates to a powdery mildew resistant bactericidal active agent. The active ingredients of the bactericidal active agent for resisting powdery mildew are compounded by fluxapyroxad active ester and fluxapyroxad, isopyrazam, pyraclostrobin or probenazole. When 2 effective components in the bactericidal active agent are compounded in a certain mass ratio range, the co-toxicity coefficient is more than 120, obvious synergistic effect appears, and the control effect can be improved compared with a single agent. In addition, the bactericidal active agent has obvious synergistic effect, obviously improves the control effect, and can reduce the application times of pesticides, thereby reducing the control cost, reducing the pesticide residue and environmental pollution and having obvious economic benefit. Secondly, the action mechanisms of the fluxazole activated ester and other components in the bactericidal active agent are different, so that the generation of drug resistance of pathogenic bacteria is delayed, and the service life of the bactericidal active agent can be prolonged.
Description
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to a powdery mildew resistant bactericidal active agent.
Background
The powdery mildew pathogenic bacteria are pathogenic fungi which are parasitic on the surface of a plant in an obligate way and generate powdery white diseases, belong to the family of ascomycete subfamily powdery mildew, have high parasitic specificity and strong parasitic capacity, and mycelia or conidia can directly invade the epidermis of a host organ through pores after germination to mainly damage young parts of plant leaves, leaf stalks, tender stems, buds, petals and the like, the damaged parts generate near-circular or irregular-shaped powdery spots which can be mutually healed into large pieces with unobvious edges, and white powder is distributed on the large pieces, namely the mycelia, the conidiophores and the conidia of the pathogenic bacteria. In the later period, the white powder turns to grey white or light brown, the leaves are withered yellow and shrivelled, and the young leaves are often twisted and withered. In the process of raising seedlings of macadimia nuts, seedlings are often damaged by powdery mildew pathogenic bacteria, at present, chemical agents are mainly used for preventing and treating the macadimia nuts, but the conventional chemical agents are usually narrow in prevention and treatment spectrum, and easily generate the problems of drug resistance, pesticide residue, environmental pollution and the like after long-term large-scale use.
The activated ester is a plant activator such as diazosulfide carboxylic acid developed by Zhangda corporation, and tests show that the mixed use of the activated ester and other medicaments can not only improve the control effect of the activated ester, but also enlarge the disease prevention range of the activated ester. Application number CN201410612276.5 discloses a bactericidal composition containing amisulbrom and activated ester and application thereof, and specifically discloses a chemical structural formula of the activated ester. The fluxazole activated ester is a novel benzothiadiazole analogue synthesized by eastern university of eastern China, and not only can be used as a plant cell inducer, but also can be used as a plant induced disease-resistant activator. Indoor and field activity tests and experiments of various domestic scientific research institutes show that the fluxapyrozole activated ester can be mixed with the bactericide to improve the bactericidal activity. The application number CN201310034822.7 discloses a pesticide composition containing fluxazole activated ester, specifically discloses the chemical name and structural formula of the fluxazole activated ester, and specifically discloses that the compound of the fluxazole activated ester and metalaxyl, zhongshengmycin, dimethomorph, oxadixyl, thiram or iprodione has a synergistic effect, so that the control effect can be improved, and the generation of drug resistance can be delayed.
The pesticide active ingredients with different action mechanisms are compounded, and the test judges whether the pesticide compounding has synergism, addition or antagonism, so that the pesticide composition can be used for developing novel chemical pesticides. The inventor discovers that better synergistic effect can be achieved when the fluxapyroxad active ester is compounded with fluxapyroxad, isopyrazam, pyraclostrobin or probenazole within a certain mass ratio range through indoor biological activity tests, and related compounding reports are not seen at present.
Disclosure of Invention
The invention aims to provide an anti-powdery mildew bactericidal active agent to solve the problem of long-term use of a single chemical agent.
In order to achieve the purpose, the invention provides the following technical scheme:
the active ingredients of the bactericidal active agent for resisting powdery mildew are compounded by fluxapyroxad active ester and fluxapyroxad, isopyrazam, pyraclostrobin or probenazole.
Preferably, the mass ratio of the fluxapyroxad activated ester to fluxapyroxad is 1-25: 10-1.
Preferably, the mass ratio of the fluxapyrozole activated ester to the isopyrazam is 1-40: 30-1.
Preferably, the mass ratio of the fluxapyrozole activated ester to the pyraclostrobin is 1-15: 40-1.
Preferably, the mass ratio of the fluorine azole activated ester to the probenazole is 1-20: 60-1.
Compared with the prior art, the invention has the following beneficial effects:
(1) when 2 effective components in the bactericidal active agent are compounded in a certain mass ratio range, the co-toxicity coefficient is more than 120, obvious synergistic effect appears, and the control effect can be improved compared with a single agent.
(2) The bactericidal active agent has obvious synergistic effect, obviously improves the control effect, can reduce the application times of pesticides, can reduce the control cost, reduces the pesticide residue and environmental pollution, and has obvious economic benefit.
(3) The action mechanisms of the fluxazole activated ester in the bactericidal active agent are different from those of other agents, so that the generation of drug resistance of pathogenic bacteria is delayed, and the service life of the bactericidal active agent can be prolonged.
Detailed Description
The technical solutions of the present invention are described in detail below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples: indoor biological activity test after compounding of fluxazole activated ester
Reagent to be tested: 98% of fluxapyroxad active ester raw material, 98% of fluxapyroxad amide raw material, 92% of isopyrazam raw material, 99% of pyraclostrobin raw material and 95% of probenazole raw material
Test work: performing pot culture on macadimia nut seedling plants until 2-4 true leaf stages are reached, and numbering for later use;
the test method comprises the following steps: (refer to NY/T1156.11-2008 "indoor bioassay for pesticides test Standard Fungicide part 11: potted plant assay for controlling melon powdery mildew)
1. Preparation of spore suspension: washing fresh spores of Alternaria solani Levl.var.australis nut plant leaves with purified water containing surfactant Tween-80 to obtain 1 × 105Suspension of spores/mL for use;
2. preparing a medicament: dissolving the raw materials with ethanol, diluting with 0.1% Tween-80 solution, preparing single mother liquor, setting multiple groups of mixture ratio, and setting 5 series of mass concentrations of each single agent and each group of mixture ratio;
3. and (3) inoculation treatment: spraying and inoculating a test sample with a spore suspension 24 hours before the treatment of the medicament, and naturally drying for later use;
4. medicament treatment: uniformly spraying the liquid medicine on the leaf surfaces of the tested crops until the leaves are completely wet, treating 5 pots each time, repeating for 4 times, and setting the treatment without the medicine as a blank control; after natural air drying, moving the culture medium to a constant temperature chamber, and culturing the culture medium at the temperature of 24 ℃;
5. investigation and calculation: when the blank control diseased leaf rate reaches more than 80%, the disease condition of each treatment is investigated according to the classification standard of the following table 1, and 50 leaves are investigated in each treatment. According to the surveyData, calculating individual disease index and preventing and treating effect, performing regression analysis on the log values of the concentrations of the medicaments and the preventing and treating effect probability value by using DPS software, and calculating the EC of each medicament50And calculating the co-toxicity coefficient (CTC value) of the mixture according to the Sun Yunpei method.
TABLE 1 grading Standard
| Number of stages | Infection proportion% |
| 0 | No scab |
| 1 | The disease spot area accounts for less than 5% of the whole leaf area |
| 3 | The disease spot area accounts for 5-15% of the whole leaf area |
| 5 | The disease spot area accounts for 15-25% of the whole leaf area |
| 7 | The disease spot area accounts for 25-50% of the whole leaf area |
| 9 | The disease spot area accounts for 50-75% of the whole leaf area |
| 11 | The disease spot area accounts for more than 75% of the whole leaf area |
The calculation method comprises the following steps:
disease index ∑ (number of diseased leaves at each level × relative level value) ÷ (survey total number of leaves × 11) × 100;
control effect (%) [ (blank control disease index-medicament treatment disease index) ÷ blank control disease index ] × 100;
measured virulence index (ATI) ═ standard agent EC50Reagent for test EC50)×100；
Theoretical virulence index (TTI) ═ a agent virulence index × percentage of a in the mixture + B agent virulence index × percentage of B in the mixture;
co-toxicity coefficient (CTC) × 100 [ actually measured toxicity index (ATI) ÷ theoretical toxicity index of the mixture (TTI) ].
The criteria for the combined effect are as follows:
the co-toxicity coefficient (CTC) is more than or equal to 120 and shows a synergistic effect;
the co-toxicity coefficient (CTC) is less than or equal to 80, and the antagonism is shown;
80 < co-toxicity coefficient (CTC) < 120 showed additive effects.
The results are shown in tables 2-5.
TABLE 2 indoor bioactivity assay of Fluconazole activated ester and Fluxapyroxad in combination with Alternaria ternifolia
As can be seen from Table 2, the ratio of the fluxapyroxad active ester to fluxapyroxad amide is 1-25: the cotoxicity coefficients within the range of 10-1 are all larger than 120, namely the synergistic effect is shown on the biological activity of the macadimia nut powdery mildew after the combination of the epoxiconazole active ester and the fluxapyroxad.
TABLE 3 indoor bioactivity assay of combination of Fluconazole-activated ester and Pyrazolonaphthoramide against Alternaria australis powdery mildew
As can be seen from Table 3, the mass ratio of the fluxapyrozole activated ester to the isopyrazam is 1-40: the cotoxicity coefficients within the range of 30-1 are all larger than 120, namely the synergistic effect is shown on the biological activity of macadimia nut powdery mildew after the combination of the fluxapyroxate and the isopyrazam.
TABLE 4 indoor bioactivity assay of combination of Fluconazole-activated ester and pyraclostrobin on Alternaria solani
| Name and proportion of the medicament | EC50(mg/L) | ATI | TTI | CTC |
| Fluconazole activating ester | 18.63 | 100.00 | -- | -- |
| Pyraclostrobin (Zuofenac) | 4.52 | 412.17 | -- | -- |
| Fluxazole activated ester 1: pyraclostrobin 40 | 3.39 | 549.56 | 404.55 | 135.84 |
| Fluxazole activated ester 1: pyraclostrobin 30 | 2.89 | 644.64 | 402.10 | 160.32 |
| Fluxazole activated ester 1: pyraclostrobin 20 | 1.76 | 1058.52 | 397.30 | 266.43 |
| Fluxazole activated ester 1: pyraclostrobin 10 | 3.68 | 506.25 | 383.79 | 131.91 |
| Fluxazole activated ester 1: pyraclostrobin 5 | 1.14 | 1634.21 | 360.14 | 453.77 |
| Fluxazole activated ester 1:pyraclostrobin 3 | 2.51 | 742.23 | 334.13 | 222.14 |
| Fluxazole activated ester 1: pyraclostrobin 1 | 2.09 | 891.39 | 256.08 | 348.08 |
| Activated fluxazole ester 3: pyraclostrobin 1 | 4.94 | 377.13 | 178.04 | 211.82 |
| Activated fluxazole ester 5: pyraclostrobin 1 | 2.16 | 862.50 | 152.03 | 567.33 |
| Activated fluxazole ester 7: pyraclostrobin 1 | 4.25 | 438.35 | 139.02 | 315.31 |
| Activated ester of fluxazole 9: pyraclostrobin 1 | 5.68 | 327.99 | 131.22 | 249.96 |
| Activated fluxazole ester 12: pyraclostrobin 1 | 3.26 | 571.47 | 124.01 | 460.82 |
| Fluxazole activated ester 15: pyraclostrobin 1 | 6.63 | 281.00 | 119.51 | 235.12 |
As can be seen from Table 4, the mass ratio of the fluxapyrozole activated ester to the pyraclostrobin is 1-15: the cotoxicity coefficients within the range of 40-1 are all larger than 120, namely the synergistic effect is shown on the biological activity of macadimia nut powdery mildew after the fluxapyroxad activated ester and the pyraclostrobin are compounded.
TABLE 5 indoor bioactivity assay of combination of fluxazole-activated ester and probenazole on macadimia nut powdery mildew
As can be seen from Table 5, the mass ratio of the fluxazole activated ester to the probenazole is 1-20: the cotoxicity coefficients within the range of 60-1 are all larger than 120, namely the synergistic effect is shown on the biological activity of macadimia nut powdery mildew after the combination of the fluxapyroxate and the probenazole.
In conclusion, when the active ingredient of the bactericidal active agent, namely the fluxapyroxad-activated ester, is compounded with fluxapyroxad, isopyrazam, pyraclostrobin or probenazole according to a certain proportion, the biological activity of the bactericidal active agent on macadimia nut powdery mildew is shown to be synergistic, the control effect on the macadimia nut powdery mildew can be improved, and the generation of drug resistance of the macadimia nut powdery mildew can be delayed.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. The bactericidal active agent for resisting powdery mildew is characterized in that the active ingredients are prepared by binary compounding of fluxapyroxate, fluxapyroxad, isopyrazam, pyraclostrobin or probenazole.
2. The powdery mildew-resistant bactericidal active agent as claimed in claim 1, wherein the mass ratio of the fluxapyroxad active ester to fluxapyroxad is 1-25: 10-1.
3. The powdery mildew-resistant bactericidal active agent according to claim 1, wherein the mass ratio of the fluxapyroxate to the isopyrazam is 1-40: 30-1.
4. The powdery mildew-resistant bactericidal active agent according to claim 1, wherein the mass ratio of the fluxapyroxad-active ester to the pyraclostrobin is 1-15: 40-1.
5. The powdery mildew-resistant bactericidal active agent of claim 1, wherein the mass ratio of the fluxazole-activated ester to the probenazole is 1-20: 60-1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115868396A (en) * | 2022-12-16 | 2023-03-31 | 广西南亚热带农业科学研究所 | Ecological seedling raising substrate for macadamia nuts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103651460A (en) * | 2012-09-25 | 2014-03-26 | 陕西美邦农药有限公司 | Pesticide composition containing fluorine azole activated ester and methoxy acrylic esters |
| CN103704229A (en) * | 2012-09-29 | 2014-04-09 | 陕西美邦农药有限公司 | Bactericidal composition containing fluorine azole activated ester |
| CN103960256A (en) * | 2013-01-29 | 2014-08-06 | 南通泰禾化工有限公司 | Pesticide composition containing fluorine azole activated ester |
| CN106212483A (en) * | 2016-08-16 | 2016-12-14 | 田文华 | A kind of containing fluoxastrobin with the bactericidal composition of fluorine azoles Acibenzolar |
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- 2021-09-13 CN CN202111070055.6A patent/CN113575602B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103651460A (en) * | 2012-09-25 | 2014-03-26 | 陕西美邦农药有限公司 | Pesticide composition containing fluorine azole activated ester and methoxy acrylic esters |
| CN103704229A (en) * | 2012-09-29 | 2014-04-09 | 陕西美邦农药有限公司 | Bactericidal composition containing fluorine azole activated ester |
| CN103960256A (en) * | 2013-01-29 | 2014-08-06 | 南通泰禾化工有限公司 | Pesticide composition containing fluorine azole activated ester |
| CN106212483A (en) * | 2016-08-16 | 2016-12-14 | 田文华 | A kind of containing fluoxastrobin with the bactericidal composition of fluorine azoles Acibenzolar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115868396A (en) * | 2022-12-16 | 2023-03-31 | 广西南亚热带农业科学研究所 | Ecological seedling raising substrate for macadamia nuts |
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