CN111183991A - Thymol-containing pesticide composition - Google Patents
Thymol-containing pesticide composition Download PDFInfo
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- CN111183991A CN111183991A CN202010138336.XA CN202010138336A CN111183991A CN 111183991 A CN111183991 A CN 111183991A CN 202010138336 A CN202010138336 A CN 202010138336A CN 111183991 A CN111183991 A CN 111183991A
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- thymol
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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
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/08—Oxygen or sulfur directly attached to an aromatic ring system
-
- 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
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/06—Oxygen or sulfur directly attached to a cycloaliphatic ring system
Abstract
The invention discloses a thymol-containing pesticide composition, which comprises thymol, carvacrol and menthol as effective components. The pesticide composition is a natural pesticide of pure plant source, has zero harvest interval when in use, and has no harm to human and natural enemies of pathogenic bacteria; when the plant disease is treated, adverse reactions of plants (such as suppression growth, influence on flower bud differentiation and the like) can not be caused; the bactericidal composition shows a first-class killing effect on gray mold and powdery mildew of various crops, and simultaneously has a good treatment effect on other crop diseases such as cowpea smut, tomato leaf mold, tomato bacterial leaf spot, cucumber angular leaf spot, cucumber gummosis, watermelon negative skin disease, pepper stem rot, strawberry root rot, pineapple heart rot and the like.
Description
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to a thymol-containing pesticide composition.
Background
Plant diseases are one of main factors influencing agricultural yield, the current solution is mainly to use chemical bactericides for prevention and control, but long-term use of a large amount of chemical bactericides can easily cause pathogenic bacteria to generate resistance, so that the prevention effect of the chemical bactericides is weakened year by year, and the prevention and control difficulty is increased continuously; meanwhile, the problems of food safety, environmental pollution, beneficial microbial flora damage and the like caused by the use of chemical bactericides are increasingly highlighted, and a safe, efficient and sustainable plant disease control product is found for realizing the sustainable development of agriculture and ensuring the ecological and food safety, so that the method is the main direction and key point of the current research.
The vegetables and fruits such as strawberries, tomatoes, grapes, hot peppers, cucumbers and the like are very easily infected by gray mold, powdery mildew and the like in growing seasons.
Gray mold and powdery mildew are two common fungal diseases which are difficult to prevent for open-field and protected crops. The pathogeny of the gray mold is fungus of botrytis of deuteromycotina, prefers low temperature and high humidity, is a semi-living nutritional saprophytic fungus, can take nutrition from living plant tissues and can also survive in dead residues, the infection mode mainly passes through wounds, the infected parts are most favored to be 'sweet and tender', and the most favored infected parts are flowers, young fruits and fruits in a color-changing mature period. The pathogen of powdery mildew is ascomycete subphylum erysiphales fungus, prefers high humidity and weak light, is a living body nutrition type parasitic fungus, is not urgent to kill host cells after infecting the host cells, but obtains nutrients from fresh and alive host cell tissues, and the infection mode mainly passes through natural orifices of plants, and the infection parts are most preferring to tender parts such as leaves, petioles, tender stems, buds, petals and the like. Although the botrytis cinerea and the erysiphe necator do not belong to the same subgenus fungus, the botrytis cinerea and the erysiphe necator both are easy to generate drug resistance, and the reasons are mainly related to infection routes, infection characteristics and physiological characteristics which are highly similar to those of the botrytis cinerea and the erysiphe necator. Conidia generated by the two are propagated along with wind, rain and agricultural operation, and even if the pathogeny base is controlled locally, the conidia still expand along with the infection way, so that the conidia are difficult to control once and are completely stopped. Both belong to the multicycle infectious diseases, and the pathogens are characterized by short incubation period and high proliferation rate. Multiple generations can occur continuously in a growing season as long as conditions are appropriate, so that multiple reinfestations occur. Pathogenic bacteria of the two diseases at different infection stages can be easily found in the same field. Pathogenic bacteria causing the diseases of the two plants have a plurality of physiological races, subspecies or variants, and pathogenic bacteria causing the diseases of different hosts or tissues are possibly not identical, so that high difficulty is brought to plant protection and control work, more medicines can be used, and finally higher resistance is generated.
The prevention and control of plant diseases not only can play a main role in chemical plant protection in the past even in a future period of time, but also brings about a negative effect which is continuously recognized by people, and a plurality of defects of the chemical plant protection are gradually promoted and amplified for years, so that people continuously call for natural biological products with disease prevention and control capacity, and particularly, the prevention and control method has urgent needs for enterprise units or individuals pursuing organic green planting. Chemical biocides can be simply classified into selective biocides and protective biocides. Most of the selective bactericides have eradicating and therapeutic activities, mainly act on germ cell membranes and mostly influence the biosynthesis process of germ cells. The bactericide has a single common action site and is easy to generate resistance, such as the common bactericide for preventing and controlling gray mold and powdery mildew: SDHI (fluopyram, isopyrazam, and the like), strobilurins (pyraclostrobin, azoxystrobin, and the like), triazoles (tebuconazole, difenoconazole, and the like), amides (boscalid, penthiopyrad, and the like), benzimidazoles (carbendazim, thiophanate-methyl, and the like). Protective bactericides often act on the cell walls of pathogens and often affect the biological oxidation process of the pathogens. Although the bactericide has more action sites for pathogenic bacteria and is difficult to generate resistance, the bactericide only has the function of inhibiting the germination of pathogenic bacteria spores for the pathogenic bacteria and has no accurate selectivity and treatment for diseases.
The existing prevention and control of plant gray mold, powdery mildew and the like are mainly realized by chemical pesticides. On one hand, the chemical pesticide is easy to generate resistance to pathogenic bacteria after being used for a long time, and the pesticide effect is gradually reduced; on the other hand, a large amount of chemical pesticides are easily left on plants, particularly fruits and vegetables, and can be accumulated in the body after being eaten by people, so that the health of the people can be threatened by a certain procedure, toxic reaction occurs, and even the life is threatened. Based on the above, how to design a thymol-containing pesticide composition which is good in effect and harmless to human bodies is a technical problem to be solved by the invention.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the thymol-containing pesticide composition which has good effect and is harmless to human bodies.
The invention solves the technical problems through the following technical means:
a pesticide composition containing thymol comprises thymol, carvacrol and menthol as effective components.
Preferably, the mass fraction ratio of the thymol, the carvacrol and the menthol in the pesticide composition is 8-20:4-12: 1-2.
Preferably, the thymol-containing pesticide composition has the active ingredient accounting for 2-80% of the total weight of the pesticide composition.
Preferably, the pesticide composition containing thymol further contains auxiliary components of a pesticide preparation so as to be prepared into a dosage form suitable for agricultural use.
The application of the pesticide composition containing thymol in preventing and treating gray mold and powdery mildew of plants.
Preferably, the pesticide composition containing thymol is applied to prevention and treatment of gray mold and powdery mildew of plants, wherein the plants are strawberries, tomatoes, grapes, hot peppers and cucumbers.
Thymol, carvacrol and menthol have good antibacterial activity and can well kill bacteria and fungi; the action mechanism of the cooperation of the three is as follows: fungi, bacteria and plants have similar cell membrane compositions, but have different cell wall compositions, and the effective components of the pesticide composition can not well penetrate through the cell walls of the plants but can well penetrate through the cell walls of the fungi and the bacteria, so the pesticide composition is effective for the fungi and the bacteria without influencing the plants; the menthol has antibacterial activity, and the greatest effect of the menthol and the carvacrol in the pesticide composition is to promote the penetration of the thymol and the carvacrol on cell walls of fungi and bacteria and improve the killing effect and killing period of the thymol and the carvacrol on pathogenic bacteria; when a cell grows normally, much information is exchanged with the outside, thymol and carvacrol influence the information exchange on the cell membrane of harmful bacteria, and the cell can die after the information exchange of the cell is blocked; the cell membrane of the pathogenic bacteria is provided with a plurality of transmission channels, wherein one channel is mainly responsible for discharging some wastes of the cells, and thymol and carvacrol can block the discharge channel to allow the wastes to accumulate in the cells;
based on the above description, the action mechanism of the pesticide composition on pathogenic bacteria is as follows: firstly, directly inhibiting cell growth; secondly, the information exchange of cell membranes is influenced; thirdly, the channel of cell excrement is blocked, so that the pH value in the cell is reduced, the pH value is changed into acid, and the metabolism is influenced. The morphological structure of the germ cells is changed, for example, cell walls, cell membranes, cytoplasm, organelles and the like are irreversibly damaged, and the germ cells are finally disintegrated and die; the morphological structure of the mycelium is changed and induced to dissolve, so that the germs die; reduce and inhibit the generation and germination of conidium, prevent the fertilization of conidium and reduce and block the probability of the continuous harm of pathogenic bacteria.
In addition, the volatile aromatic hydrocarbon gas of thymol and carvacrol also has high-efficiency killing effect on conidia in a closed space, is a strong and effective protective barrier for diseases such as gray mold and powdery mildew which are mainly transmitted by airflow, and is a function point which is difficult to compare favorably with chemical bactericides.
Compared with the traditional chemical agents, the pesticide composition disclosed by the invention integrates the advantages of a selective bactericide and a protective bactericide, and is effective on germ cell walls and cell membranes; the multifunctional disease eradicating agent has both a eradicating function and a protecting function on diseases; not only influencing the biological oxidation process of pathogenic bacteria, but also influencing the biosynthesis process; the pesticide can be used for many times, is not easy to generate resistance, and can be used for managing resistant diseases; the pesticide composition is food-grade in safety level, and can be taken immediately after being applied; the pesticide is a natural pesticide of pure plant source, is environment-friendly and ecological, and accords with the strategy of sustainable development; the use time is zero harvest interval, and the product has no harm to human and natural enemies of pathogenic bacteria; when the plant disease is treated, adverse reactions of plants (such as suppression growth, influence on flower bud differentiation and the like) can not be caused; has a strong killing effect on gray mold and powdery mildew of various crops.
The invention has the advantages that: the pesticide composition is food-grade in safety level, and can be taken immediately after being applied; the pesticide is a natural pesticide of pure plant source, is environment-friendly and ecological, and accords with the strategy of sustainable development; the use time is zero harvest interval, and the product has no harm to human and natural enemies of pathogenic bacteria; when the plant disease is treated, adverse reactions of plants (such as suppression growth, influence on flower bud differentiation and the like) can not be caused; the bactericidal composition shows a first-class killing effect on gray mold and powdery mildew of various crops, and simultaneously has a good treatment effect on other crop diseases such as cowpea smut, tomato leaf mold, tomato bacterial leaf spot, cucumber angular leaf spot, cucumber gummosis, watermelon negative skin disease, pepper stem rot, strawberry root rot, pineapple heart rot and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but 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.
A pesticide composition containing thymol comprises thymol, carvacrol and menthol as effective components.
Preferably, the mass fraction ratio of the thymol, the carvacrol and the menthol in the pesticide composition is 8-20:4-12: 1-2.
Preferably, the active ingredient is present in an amount of 2 to 80% by weight of the total pesticide composition.
Preferably, the pesticide composition also contains auxiliary components of pesticide preparations so as to be prepared into dosage forms suitable for agriculture.
The application of the pesticide composition containing thymol in preventing and treating gray mold and powdery mildew of plants.
Preferably, the plant is strawberry, tomato, grape, pepper, cucumber.
Of course, the pesticide composition of the invention is not limited to the treatment of gray mold and powdery mildew, and simultaneously acting plants are not limited to strawberries, tomatoes, grapes, hot peppers and cucumbers; the compound bactericide can also be used for other plants, bacteria and fungi, such as cowpea sooty mould, tomato leaf mold, tomato bacterial leaf spot, cucumber angular leaf spot, cucumber gummosis, watermelon negative skin disease, pepper stem rot, strawberry root rot, pineapple heart rot and the like, and has good effect feedback.
When in use, the diluted solution is diluted by 600 times and 1000 times according to needs.
Example 1, the pesticide composition of the present invention is diluted 600 times and used for treating gray mold of strawberry, the chemical agent (fludioxonil + iprodione) is used for treating gray mold of strawberry in the control group, and the treatment effect is counted as shown in the following table;
example 2, the pesticide composition of the present invention diluted 600 times was used for treating cucumber powdery mildew, and chemical agents (40% polysulfide suspending agent) were used in control group for treating cucumber powdery mildew, and the treatment effects were counted, as shown in the following table;
example 3, the following table applies respectively: the treatment effect of the pesticide composition and the chemical agent (cuprous oxide + thiram) for treating the stem rot and the root rot of the capsicum is shown in a comparison table;
as can be seen from the above table, the pesticide composition of the invention has better effect than chemical agents and double boundaries.
Example 4 using the pesticidal composition of the invention and a chemical agent (garinong + shigao) to treat bacterial leaf spots in tomato, the effect within 10 days was observed and is shown in the following table:
the pesticide composition has stable continuous use effect and weakened continuous use effect of chemical agents.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A pesticide composition containing thymol is characterized in that: the effective components are thymol, carvacrol and menthol.
2. A pesticidal composition comprising thymol according to claim 1 characterized by: the mass fraction ratio of thymol, carvacrol and menthol in the pesticide composition is 8-20:4-12: 1-2.
3. A pesticidal composition comprising thymol according to claim 1 characterized by: the active ingredients account for 2-80% of the total weight of the pesticide composition.
4. A pesticidal composition comprising thymol according to claim 1 characterized by: the pesticide composition also contains auxiliary components of a pesticide preparation so as to be prepared into a dosage form suitable for agriculture.
5. Use of the thymol-containing pesticide composition of any one of claims 1-4 for controlling gray mold and powdery mildew of plants.
6. The application of the thymol-containing pesticide composition to control of gray mold and powdery mildew of plants according to claim 5 is characterized in that: the plant is strawberry, tomato, grape, pepper, cucumber.
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| CN202010138336.XA CN111183991A (en) | 2020-03-03 | 2020-03-03 | Thymol-containing pesticide composition |
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| CN202010138336.XA CN111183991A (en) | 2020-03-03 | 2020-03-03 | Thymol-containing pesticide composition |
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| CN111183991A true CN111183991A (en) | 2020-05-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112616583A (en) * | 2020-12-14 | 2021-04-09 | 安徽金敦福农业科技有限公司 | Method for preventing and treating bacterial fruit blotch of watermelons |
| CN113767820A (en) * | 2021-09-08 | 2021-12-10 | 福建省农业科学院植物保护研究所 | Whole-course ecological simple pest control method for basal rot of corn stalk |
| CN115590027A (en) * | 2022-09-20 | 2023-01-13 | 贵州省生物技术研究所（贵州省生物技术重点实验室、贵州省马铃薯研究所、贵州省食品加工研究所）（Cn） | Tebuconazole and thymol compounded konjak root rot resistant bactericidal composition |
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| CN112616583A (en) * | 2020-12-14 | 2021-04-09 | 安徽金敦福农业科技有限公司 | Method for preventing and treating bacterial fruit blotch of watermelons |
| CN113767820A (en) * | 2021-09-08 | 2021-12-10 | 福建省农业科学院植物保护研究所 | Whole-course ecological simple pest control method for basal rot of corn stalk |
| CN115590027A (en) * | 2022-09-20 | 2023-01-13 | 贵州省生物技术研究所（贵州省生物技术重点实验室、贵州省马铃薯研究所、贵州省食品加工研究所）（Cn） | Tebuconazole and thymol compounded konjak root rot resistant bactericidal composition |
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Application publication date: 20200522 |