CN116762810A - Pesticide composition containing fludioxonil and boscalid, and preparation method and application thereof - Google Patents

Pesticide composition containing fludioxonil and boscalid, and preparation method and application thereof Download PDF

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Publication number
CN116762810A
CN116762810A CN202310263514.5A CN202310263514A CN116762810A CN 116762810 A CN116762810 A CN 116762810A CN 202310263514 A CN202310263514 A CN 202310263514A CN 116762810 A CN116762810 A CN 116762810A
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China
Prior art keywords
boscalid
fludioxonil
liquid medicine
mass concentration
pesticide composition
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CN202310263514.5A
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Chinese (zh)
Inventor
汪汉成
李文红
蔡刘体
孟建玉
向立刚
张艺
李童
叶果
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Guizhou Institute of Tobacco Science
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Guizhou Institute of Tobacco Science
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Application filed by Guizhou Institute of Tobacco Science filed Critical Guizhou Institute of Tobacco Science
Priority to CN202310263514.5A priority Critical patent/CN116762810A/en
Publication of CN116762810A publication Critical patent/CN116762810A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a pesticide composition containing fludioxonil and boscalid, a preparation method and application thereof, wherein the fludioxonil raw material with the mass concentration of 90% and the boscalid raw material with the mass concentration of 95% are respectively prepared into 1 multiplied by 10 by methanol 4 mg/L mother liquor, and preserving at low temperature of 4 ℃; preparing the mother solution into liquid medicine containing 10-40 mg/L fludioxonil and 50-200 mg/L boscalid by using 0.1% Tween 20 respectively; the liquid medicine containing 20-80 mg/L of fludioxonil and the liquid medicine containing 100-400 mg/L of boscalid are mixed in equal volume, and the prepared composition contains 10-40 mg/L of fludioxonil and 50-200 mg/L of boscalid. The invention can prevent and treat tobacco seed mildew and rot caused by the pullulans, and has strong bactericidal activity and environmental protection.

Description

Pesticide composition containing fludioxonil and boscalid, and preparation method and application thereof
Technical Field
The invention relates to the technical field of biology, in particular to a pesticide composition containing fludioxonil and boscalid, a preparation method of the pesticide composition containing fludioxonil and boscalid, and application of the pesticide composition containing fludioxonil and boscalid in preventing and treating tobacco seed mildew and rot caused by lopyr.
Background
From the fungus pullulansCladosporiumcladosporioidesThe mildew and rot of tobacco seeds caused by (Fresen.) G.A. de Vries is a fungal disease which is easy to occur in the harvest and storage period of tobacco seeds, mainly occurs in the seed storage period and usually occurs after the seeds germinate or germinate, pathogenic bacteria spores germinate to generate black brown hyphae, and the hyphae infect the germinated and germinated tobacco seeds or tobacco seedlings, and black spores are quickly generated and further spread to harm. The tobacco seeds are not clean in impurity removal during the harvest and storage period, high in preservation environment humidity and incomplete in sterilization, so that the seeds are mildewed and rotten, and the damage of the germination period of the seeds is caused. The disease has the characteristics of hidden occurrence, high hazard and the like, and the incidence rate is as high as 100% when serious, so that the quality of tobacco seeds is reduced, the germination rate is reduced, the quality of tobacco seedlings is reduced, and the benefit of tobacco farmers is impaired. The genus pullulans (Hyphomycetes), the order of the genus Aureobasidium (Miniliales), the family of the family Aureobasidium (Moniliaceae) fungi, which produce a large number of conidia during growth, the colony colors include olive green, black coffee, etc.
At present, few researches on plant disease control caused by the pullulan are carried out, only the pullulan is studied, zhang Xin and the like evaluate the toxicity of 13 bactericides of difenoconazole, thiophanate-methyl, dimethomorph, pyraclostrobin, flusilazole, iprovalicarb, prochloraz, tebuconazole, myclobutanil, zineb, triazolone, bordeaux mixture and kasugamycin on the pullulan, and the difenoconazole, thiophanate-methyl, dimethomorph, pyraclostrobin and flusilazole are found to have certain activity. The patent on prevention and control of plant diseases caused by pullulans has not been reported yet. In summary, there is a need to find a solution to the mildew of tobacco seeds to solve the problem of seed diseases caused by the pullulans in storage and processing production.
Chemical control is the most economical and effective main measure in a plurality of control methods for controlling plant diseases. Therefore, the efficient and safe pesticide combination is searched, and the pesticide combination is used for seed treatment in the seed disinfection or seed coating process, can effectively control the mildew of tobacco seeds, improves the control efficiency, reduces the disease loss, has wide application space and is also a requirement for the safe and sustainable development of tobacco. Fludioxonil, which is a benzothiazole fungicide, acts on the spindle of a dry pathogenic bacterium in mitosis to kill fungi by affecting cell division. Boscalid is a mitochondrial respiration inhibitor, is a succinate dehydrogenase inhibitor (SDHI), and acts by inhibiting succinate coenzyme Q reductase (also called complex II) on mitochondrial electron transfer chains, and is mainly used for preventing and controlling various vegetable diseases such as tomato gray mold, strawberry gray mold and the like at present. At present, reports of compounding the compound pesticide for controlling seed diseases are not seen.
Disclosure of Invention
The invention aims to overcome the defects and provide the pesticide composition containing fludioxonil and boscalid, which can prevent and treat mildew and rot caused by the pullulan in the storage and processing processes of tobacco seeds, has strong bactericidal activity, is environment-friendly and has low cost.
The invention further aims at providing a preparation method of the fludioxonil and boscalid-containing pesticide composition.
It is still another object of the present invention to provide the use of the fludioxonil and boscalid-containing pesticidal composition for controlling mildew and rot caused by cladosporium cucumerinum during storage and processing of tobacco seeds.
The invention relates to a fludioxonil and boscalid-containing pesticide composition, wherein: the fludioxonil content is 10-40 mg/L and the boscalid content is 50-200 mg/L.
The pesticide composition containing fludioxonil and boscalid, wherein: preferably, the fludioxonil content is 20-30 mg/L and the boscalid content is 60-150 mg/L.
The pesticide composition containing fludioxonil and boscalid, wherein: fludioxonil is the pesticide raw material with the mass concentration of 90%, and boscalid is the pesticide raw material with the mass concentration of 95%.
The invention discloses a preparation method of a fludioxonil and boscalid-containing pesticide composition, which comprises the following steps of:
(1) The fludioxonil raw material with the mass concentration of 90% and the boscalid raw material with the mass concentration of 95% are respectively prepared into 1 multiplied by 10 by methanol 4 mg/L mother liquor is preserved at a low temperature of 4 ℃ for standby;
(2) Preparing the mother solution into liquid medicine containing 20-80 mg/L fludioxonil and 100-400 mg/L boscalid by using 0.1% Tween 20 respectively;
(3) The liquid medicine containing 20-80 mg/L fludioxonil and the liquid medicine containing 100-400 mg/L boscalid are mixed in equal volume, and the prepared composition contains 10-40 mg/L fludioxonil and 50-200 mg/L boscalid.
The invention discloses application of a pesticide composition containing fludioxonil and boscalid in preventing and treating mildew and rot of tobacco seeds.
Compared with the prior art, the invention has obvious beneficial effects, and the technical scheme can be adopted as follows: the invention respectively prepares the fludioxonil and the boscalid into mother liquor by methanol, the two base materials of the fludioxonil and the boscalid do not react chemically, and the fludioxonil and the boscalid are diluted by sterile water containing 0.1% Tween 20 when in use, and the composition is directly sprayed to the tobacco seeds to be coated or sprayed to the tobacco seeds to be coated. Aiming at pathogens such as pullulan on tobacco seeds, the invention can inhibit the infection of pathogenic bacteria, inhibit the generation and germination of pathogenic bacteria spores, and reduce the number of re-infection cycle of diseases. The bactericidal composition has obvious prevention and control effects, and compared with a single dose, the bactericidal composition has obviously improved bactericidal effect, can reduce the medication cost and reduce the pollution to the environment; the potential drug resistance risk of pathogenic bacteria to fludioxonil and boscalid can be reduced, and the drug combination can be used for treating other pathogenic bacteria which can cause the mildew and rot of tobacco seeds. Living experiments show that the composition of fludioxonil and boscalid has good control effect on tobacco seed mildew and rot and is safe to germination and development of tobacco seeds. The prevention and treatment effect of the tobacco seed mildew is good compared with the effect of independent action of fludioxonil and independent action of boscalid.
Detailed Description
Example 1
A method for preparing a pesticide composition containing fludioxonil and boscalid, comprising the following steps:
(1) The fludioxonil raw material with the mass concentration of 90% and the boscalid raw material with the mass concentration of 95% are respectively prepared into 1 multiplied by 10 by methanol 4 mg/L mother liquor is preserved at a low temperature of 4 ℃ for standby;
(2) Preparing the mother solution into liquid medicine containing fludioxonil 80 mg/L and boscalid 180 mg/L by using 0.1% Tween 20 respectively;
(3) The fludioxonil and the boscalid liquid medicine are mixed in equal volume, and the prepared composition contains fludioxonil 40 mg/L and boscalid 50 mg/L.
Example 2
A method for preparing a pesticide composition containing fludioxonil and boscalid, comprising the following steps:
(1) The raw fludioxonil with the mass concentration of 90% and the raw boscalid with the mass concentration of 95% are respectively prepared into 1 multiplied by 10 4 mg/L mother liquor is preserved at a low temperature of 4 ℃ for standby;
(2) Preparing the mother solution into liquid medicine containing fludioxonil 20 mg/L and boscalid 100 mg/L respectively by using 0.1% Tween 20;
(3) The fludioxonil liquid medicine and the boscalid liquid medicine are mixed in equal volume, and the prepared composition contains 10 mg/L fludioxonil and 200 mg/L boscalid.
Example 3
A method for preparing a pesticide composition containing fludioxonil and boscalid, comprising the following steps:
(1) The raw fludioxonil with the mass concentration of 90% and the raw boscalid with the mass concentration of 95% are respectively prepared into 1 multiplied by 10 4 mg/L mother liquor is preserved at a low temperature of 4 ℃ for standby;
(2) The mother solution is respectively prepared into liquid medicine containing fludioxonil 60 mg/L and boscalid 200 mg/L by using 0.1% Tween 20.
(3) The fludioxonil liquid medicine and the boscalid liquid medicine are mixed in equal volume, and the prepared composition contains fludioxonil 30 mg/L and boscalid 100 mg/L.
Test example: test of the pesticide composition of fludioxonil and boscalid prepared in examples 1-3 for controlling mildew and rot of tobacco seed
Mature tobacco seeds (cloud 87) are collected, and threshing, impurity removal, washing and airing are carried out according to a normal procedure.
Pesticide composition treatment containing fludioxonil and boscalid: the composition liquid medicine in the embodiment is uniformly sprayed on bare seeds of tobacco seeds by a sprayer, and the liquid medicine is stored in a normal procedure after being dried.
Control treatment: and uniformly spraying clear water on the bare seeds of the tobacco seeds by adopting a sprayer, and storing in a normal procedure after airing.
After seed treatment, 300 seeds are respectively taken, the bacteria carrying rate of the seeds is detected by a filter paper method, and the control effect of the medicament composition on the mildew and rot of the seeds is calculated according to the bacteria carrying rate inhibition rate.
The test result of the tobacco seed mildew prevention effect shows that the pesticide composition containing fludioxonil and boscalid can well prevent and treat the tobacco seed mildew, and the disease prevention effect reaches more than 95.74%.
TABLE 1 control Effect of pesticide compositions of examples 1 to 3 on mildew and rot of tobacco seeds
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any simple modification, equivalent variation and variation of the above embodiment according to the technical matter of the present invention still fall within the scope of the technical scheme of the present invention.

Claims (5)

1. A fludioxonil and boscalid-containing pesticide composition, wherein: the fludioxonil content is 10-40 mg/L and the boscalid content is 50-200 mg/L.
2. A fludioxonil and boscalid-containing pesticide composition according to claim 1, wherein: preferably, the fludioxonil content is 10-40 mg/L and the boscalid content is 50-200 mg/L.
3. A fludioxonil and boscalid-containing pesticidal composition according to claim 1 or 2, wherein: fludioxonil is the pesticide raw material with the mass concentration of 90%, and boscalid is the pesticide raw material with the mass concentration of 95%.
4. The preparation method of the fludioxonil and boscalid-containing pesticide composition comprises the following steps of:
(1) The fludioxonil raw material with the mass concentration of 90% and the boscalid raw material with the mass concentration of 95% are respectively prepared into 1 multiplied by 10 by using methanol 4 mg/L mother liquor is preserved at a low temperature of 4 ℃ for standby;
(2) Preparing the mother solution into liquid medicine containing 20-80 mg/L fludioxonil and 100-400 mg/L boscalid by using 0.1% Tween 20 respectively;
(3) The liquid medicine containing 20-80 mg/L fludioxonil and the liquid medicine containing 100-400 mg/L boscalid are mixed in equal volume, and the prepared composition contains 20-80 mg/L fludioxonil and 50-200 mg/L boscalid.
5. Use of a pesticide composition containing fludioxonil and boscalid for controlling mildew and rot of tobacco seeds caused by cladosporium cucumerinum.
CN202310263514.5A 2023-03-17 2023-03-17 Pesticide composition containing fludioxonil and boscalid, and preparation method and application thereof Pending CN116762810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310263514.5A CN116762810A (en) 2023-03-17 2023-03-17 Pesticide composition containing fludioxonil and boscalid, and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310263514.5A CN116762810A (en) 2023-03-17 2023-03-17 Pesticide composition containing fludioxonil and boscalid, and preparation method and application thereof

Publications (1)

Publication Number Publication Date
CN116762810A true CN116762810A (en) 2023-09-19

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Family Applications (1)

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