CN111657293A - Application of oxadiazole compound in preventing and treating Chinese chive maggots, Chinese chive maggot preventing and treating method and composition - Google Patents
Application of oxadiazole compound in preventing and treating Chinese chive maggots, Chinese chive maggot preventing and treating method and composition Download PDFInfo
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- CN111657293A CN111657293A CN201910177398.9A CN201910177398A CN111657293A CN 111657293 A CN111657293 A CN 111657293A CN 201910177398 A CN201910177398 A CN 201910177398A CN 111657293 A CN111657293 A CN 111657293A
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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
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to application of a compound shown as a formula (I) in control of Chinese chive maggots, a method for controlling Chinese chive maggots by using the compound, and a Chinese chive maggot control composition containing the compound. In the formula (I), R1‑R8Each independently hydrogen, C optionally substituted by halogen atoms1‑C6Alkyl or C1‑C6Alkoxy, halogen atom, E is O or S.
Description
Technical Field
The invention relates to application of an oxadiazole compound in preventing and treating Chinese chive maggots, a Chinese chive maggot preventing and treating method and a Chinese chive maggot preventing and treating composition.
Background
The chive maggot, which is known as the Bradysia odoriphaga (Bradysia odoriphaga), is usually gathered at the bulb, root and pseudostem of chives, and eats the internal tissues of the chives and even damages the white tender stem, so that the mild case causes the leaves of the plant to turn yellow, wilting and droop, the mild case is difficult to germinate new buds, and the severe case causes the base of the upper leaves to break off, and the whole plant dies. In summer, at high temperature, larvae move downwards and mainly damage bulbs, so that the whole bulbs are rotten, and in severe cases, seedlings of the Chinese chives wither, large pieces of Chinese chives wither, the quality and the yield of the Chinese chives are seriously influenced, and the main obstacle of the development of the Chinese chives is formed.
In recent years, the damage of the leeks is increasingly serious with the expansion of the production area of the leeks and the generation of drug resistance of the leek maggots. In order to prevent and control the Chinese chive maggots, vegetable farmers often use a large amount of pesticides, even use forbidden high-toxicity pesticides, so that the Chinese chive pesticide residues are very high, the quality of the Chinese chives is seriously affected, and the 'toxic Chinese chives' event frequently occurs. Therefore, the pollution-free planting of the Chinese chives is increasingly paid attention by people.
Patent document CN101820761A discloses the use of oxadiazole compounds represented by the following formula for controlling nematodes.
Disclosure of Invention
The inventor finds that the compound shown in the formula (I) can effectively prevent and control Chinese chive maggots besides nematicidal activity.
Therefore, the invention provides application of the compound shown in the formula (I) in control of Chinese chive maggots, and a method for controlling the Chinese chive maggots by using the compound. The invention also provides a Chinese chive maggot control composition which contains the compound shown in the formula (I) as an active ingredient.
In the above formula (I), R1-R8Each independently hydrogen, C optionally substituted by halogen atoms1-C6Alkyl or C1-C6Alkoxy, halogen atom, preferably R1-R8Each independently is hydrogen or C1-C6An alkyl group; e is O or S, preferably S.
Particularly preferred compounds of formula (I) above are 3-phenyl-5- (thiophen-2-yl) -1,2, 4-oxadiazole.
Specifically, the present invention relates to:
(1) the application of the compound of the formula (I) in preventing and controlling Chinese chive maggots.
(2) The use as described in (1) above, wherein the compound of formula (I) is 3-phenyl-5- (thiophen-2-yl) -1,2, 4-oxadiazole.
(3) The use according to (1) or (2), wherein the amount of the compound of formula (I) is 100-300 g/mu.
(4) The use as described in any one of (1) to (3) above, wherein the compound of formula (I) is used in the form of emulsifiable concentrate, and the emulsifiable concentrate contains 5-20%, preferably about 10% of the compound of formula (I), and the preferable emulsifiable concentrate is used in an amount of 1000-3000 g/mu.
(5) The use of any one of (1) to (4) above, wherein the compound of formula (I) is administered in the form of a drench.
(6) The use of any one of (1) to (5) above, wherein the compound of formula (I) is administered at the beginning of the outbreak period of leek maggots.
(7) A method of controlling chive maggots, the method comprising applying an effective amount of the compound of formula (I).
(8) The Chinese chive maggot control composition contains the compound shown in the formula (I) as an active ingredient, and contains auxiliary agents or auxiliary materials which are allowed to be used in pesticides.
(9) The composition of (8) above, which is an emulsifiable concentrate containing 5 to 20%, preferably about 10%, of the compound of formula (I).
(10) The composition as described in (8) or (9) above, which further comprises one or more selected from the group consisting of triton, Nongru, monoolein, and monolaurin as an emulsifier.
(11) The composition according to (8) to (10) above, which further comprises cyclohexanone, N-dimethylformamide or the like as a cosolvent.
Detailed Description
In the present invention, "%" represents mass percent.
In the above formula (I), R1-R8Each independently being hydrogen, halogen, unsubstituted C1-C6Alkyl or C1-C6Alkoxy, preferably each independently of the others, is hydrogen or C1-C6An alkyl group. E is O or S, preferably S.
Most preferably, the compound of formula (I) is 3-phenyl-5- (thiophen-2-yl) -1,2, 4-oxadiazole.
The compound of formula (I) is a known compound and can be produced, for example, by the method described in CN 101820761A.
In addition, the compound of formula (I) may be formulated into various pesticide formulations including, but not limited to, emulsifiable concentrates, suspending agents, wettable powders, water dispersible granules, aqueous emulsions, microemulsions, granules, microcapsules, aqueous solutions, and the like, by a known method, as needed, together with one or more known agriculturally acceptable adjuvants, such as stabilizers, binders, emulsifiers, antifoaming agents, viscosity modifiers, and the like.
Preferably, the compounds of formula (I) are used in the form of emulsifiable concentrates. The emulsifiable concentrate is preferably applied in an amount of 1000 to 3000 g/mu. The missible oil can contain one or more than two of triton, agricultural emulsion, oleic acid monoglyceride and lauric acid monoglyceride as emulsifier, and can further contain cyclohexanone or N, N-dimethylformamide as cosolvent.
More preferably, the compound of formula (I) above is administered in the form of a drench. The application effect is best when the Chinese chive maggots occur in the full period.
In the use of the present invention for the prevention and treatment of Chinese chive maggots, the above compound of formula (I) may be used in combination with other agricultural chemicals including bactericides, insecticides, etc. The term "co-application" includes separate alternate applications or compounding together into a mixture.
Examples
The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to these examples. Any modification within the scope of the gist of the present invention is included in the scope of the present invention.
Formulation examples
| 3-phenyl-5- (thiophen-2-yl) -1,2, 4-oxadiazoles | 10％ |
| Cyclohexanone | 10％ |
| Triton X100 | 5％ |
| Farm milk 500# | 3％ |
| Farm milk 600# | 3％ |
| Xylene | 69％ |
Examples of Effect testing
1 conditions of the test
1.1 test objects, crops
Test subjects: chinese chive maggot
And (3) test crops: chinese chives
1.2 environmental or facility cultivation conditions
The test is carried out in Wangzhou Zhanning county Wangzhou Zhancun of Hebei province, the leek occupies 800 mu of land, the hydropower facilities are complete, and the leek is planted throughout the year.
2 test design and arrangement
2.1 Agents
2.1.1 test Agents
Formulation examples the emulsifiable concentrate formulations shown in the formulation examples (hereinafter referred to as "10% active compound emulsifiable concentrates") were made by the applicant.
2.1.2 control Agents
70 percent phoxim missible oil, and is produced and sold by Jinan Luba pesticide Co.
2.1.3 dosage and numbering of drugs
TABLE 1 test design of test agents
2.2 cell arrangement
2.2.1 cell arrangements
The test and control agents were treated with 4 agents, a blank control was added, and the total of 5 treatments were arranged in blocks between the treatments (Table 2).
TABLE 2 field arrangement pattern of each treatment cell
| A | A | A | A |
| B | B | B | B |
| C | C | C | C |
| D | D | D | D |
| CK | CK | CK | CK |
2.2.2 cell area and repetition
The number of plants in the cell: each cell is 30 square meters, and two meters of isolation rows are arranged among the cells.
The number of repetitions: 4 times.
2.3 methods of application
2.3.1 methods of use
And (4) irrigating.
2.3.2 application time and frequency
Irrigating root in 2018, 9 months and 10 days, and irrigating root with HD-400 model hand operated knapsack sprayer for 1 time
2.3.3 information on the agents for controlling other diseases and pests
No additional agents were sprayed prior to and during this test.
3 investigating, recording and measuring method
3.1 Meteorological and soil data
3.1.1 Meteorological data
The average temperature is 23 ℃, the highest temperature is 29 ℃, the lowest temperature is 17 ℃, the relative humidity is 30% and the southeast wind is 3 grades on the day of the application. The duration of the test was cloudy. The detailed meteorological data are shown in tables 3 and 4.
3.1.2 soil data
The test soil is loam, the soil fertility is uniform, the pH value of the soil is 7.2, the soil is slightly alkaline, and the content of organic matters is 2.1%.
3.2 investigation methods, times and frequency
3.2.1 investigation time and number of surveys
The base number of the investigation before the administration of the drug was determined, and the investigation was performed 3, 7, 14, and 21 days (13 days at 9 months, 27 days, 24 days, and 1 day at 10 months) after the administration of the drug, 5 times in total.
3.2.2 methods of investigation
Investigation of the plant damage rate: and (5) counting the healthy plants and the damaged plants (based on yellow, soft and lodging of leaf tips) by taking 10 piers in each row 2 in the center of the cell.
Survival population survey: and finally, digging 5 piers of Chinese chives in the central area of the cell for the first investigation, and counting the number of live maggots inside and outside the phosphorus stem.
3.2.3 method of calculating drug efficacy
The prevention and treatment effect is expressed by correcting the population reduction rate, statistical calculation is carried out according to the stipulated method of pesticide field efficacy test criterion (II),
the calculation formula of the drug effect is as follows:
the control effect (%) - (the number of worms in the blank control area-the number of worms in the treatment area)/the number of worms in the blank control area multiplied by 100
The plant protection effect calculation formula is as follows:
the ratio (%) of the affected plants was found to be the number of affected plants before application/the number of affected plants after application X100
The plant protection effect (%) - (the rate of damage after drug administration in the placebo area-the rate of damage after drug administration in the treatment area)/the rate of damage after drug administration in the placebo area × 100
3.3 direct effects on crops
The treatment of the test medicament and the control medicament has no obvious influence on the test crops, and has no phytotoxicity and growth stimulation effect on the Chinese chives.
3.4 Effect on other organisms
3.4.1 Effect on other pests
No effect of the test agent on other pests was observed.
3.4.2 effects on other non-target organisms
Ladybug and chrysopa are found during the test period, and no killing effect of the test agent on the beneficial natural enemies is observed.
Table 3 weather conditions (or facility cultivation conditions) table (2018) of the test area on the day of drug application
| Date of application | Weather conditions | Wind direction and force (Pu Fu level) | Temperature (. degree.C.) | Relative humidity (%) | Other climatic factors |
| 9 month and 10 days | Clear to cloudy | 3-grade southeast wind | 17-29 | 30 | Is free of |
Table 4 weather data table during test (2018)
5 results and analysis
TABLE 510% active Compound emulsifiable solution against Chinese chive maggot test results statistical table (2018)
Summary analysis of test results of 610% active compound emulsifiable concentrate for preventing and controlling Chinese chive maggots
Note: the control (%) in the table above is the average of each repetition.
And carrying out one-way analysis of variance on the test data by adopting DPS data processing software.
And (3) evaluation of the medicament: the results of the tests show that the 10% active compound emulsifiable solution has good control effect on leek and Chinese chive maggots, and the control effect reaches more than 92% after the treatment of each concentration for 21 days.
The dosage of the preparation is 3000 g/mu, the pest control effect 21 days after application is 95.41 percent, which is higher than that of other treatments, the difference between the control effects of the two treatments of 2000 g/mu and 1000 g/mu is not significant, and the difference between the control effects of the two treatments is significant compared with that of the control treatment.
Industrial applicability
The invention solves the problem of the Chinese chive maggot which is difficult to control, thereby being beneficial to improving the quality and the yield of the Chinese chive.
Claims (10)
1. The application of the compound shown in the formula (I) in preventing and controlling Chinese chive maggots,
in the above formula (I), R1-R8Each independently hydrogen, C optionally substituted by halogen atoms1-C6Alkyl or C1-C6Alkoxy, halogen atom, preferably R1-R8Each independently is hydrogen or C1-C6An alkyl group; e is O or S, preferably S.
2. The use of claim 1, wherein the compound of formula (I) is 3-phenyl-5- (thiophen-2-yl) -1,2, 4-oxadiazole.
3. The use according to claim 1 or 2, wherein the amount of the compound of formula (I) is 100-300 g/mu.
4. Use according to any one of claims 1 to 3, wherein the compound of formula (I) is used in the form of an emulsifiable concentrate containing 5-20%, preferably 10%, of the compound of formula (I), preferably in an amount of 1000-3000 g/acre.
5. Use according to any one of claims 1 to 4, wherein the compound of formula (I) is administered in the form of a drench root, preferably starting at the stage of emergence of leek maggots.
6. A method of controlling chive maggots, the method comprising applying an effective amount of the compound of formula (I).
7. The Chinese chive maggot control composition contains the compound shown in the formula (I) as an active ingredient, and contains auxiliary agents or auxiliary materials which are allowed to be used in pesticides.
8. The composition of claim 7, which is an emulsifiable concentrate containing 5-20%, preferably 10%, of the compound of formula (I).
9. The composition according to claim 7 or 8, further comprising one or more selected from the group consisting of triton, agricultural milk, oleic acid monoglyceride, and lauric acid monoglyceride as an emulsifier, preferably further comprising a co-solvent, more preferably the co-solvent is cyclohexanone or N, N-dimethylformamide.
10. The composition of claim 7, which is:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177398.9A CN111657293A (en) | 2019-03-09 | 2019-03-09 | Application of oxadiazole compound in preventing and treating Chinese chive maggots, Chinese chive maggot preventing and treating method and composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177398.9A CN111657293A (en) | 2019-03-09 | 2019-03-09 | Application of oxadiazole compound in preventing and treating Chinese chive maggots, Chinese chive maggot preventing and treating method and composition |
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| Publication Number | Publication Date |
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| CN111657293A true CN111657293A (en) | 2020-09-15 |
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| CN201910177398.9A Pending CN111657293A (en) | 2019-03-09 | 2019-03-09 | Application of oxadiazole compound in preventing and treating Chinese chive maggots, Chinese chive maggot preventing and treating method and composition |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097545A (en) * | 1992-01-23 | 1995-01-25 | 道伊兰科公司 | With replacing De oxadiazole and thiadiazole compound control insect |
| CN101820761A (en) * | 2007-08-13 | 2010-09-01 | 达沃股份有限公司 | Be used to control composition and the method for nematode |
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2019
- 2019-03-09 CN CN201910177398.9A patent/CN111657293A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097545A (en) * | 1992-01-23 | 1995-01-25 | 道伊兰科公司 | With replacing De oxadiazole and thiadiazole compound control insect |
| CN101820761A (en) * | 2007-08-13 | 2010-09-01 | 达沃股份有限公司 | Be used to control composition and the method for nematode |
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