CN115943963A - Sterilization composition containing methionin and dichlobeniazox and application thereof - Google Patents

Sterilization composition containing methionin and dichlobeniazox and application thereof Download PDF

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CN115943963A
CN115943963A CN202211657463.6A CN202211657463A CN115943963A CN 115943963 A CN115943963 A CN 115943963A CN 202211657463 A CN202211657463 A CN 202211657463A CN 115943963 A CN115943963 A CN 115943963A
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agent
bactericidal composition
percent
rice
mass ratio
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许艳秋
罗杰
梁灵
曹棣
刘军
杨志兰
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Sichuan Institute Of Pesticide Control
Sichuan Lier Crop Science Co Ltd
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Sichuan Institute Of Pesticide Control
Sichuan Lier Crop Science Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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Abstract

The invention belongs to the field of agricultural bactericides, and provides a bactericidal composition containing methyl thiazole induced amine and dichlobenizox and an application thereof, wherein the mass ratio of the methyl thiazole induced amine to the dichlobenizox is 80; the bactericidal composition has excellent synergistic effect on crop diseases; can effectively reduce the dosage of pesticide, slow down the generation of disease resistance, reduce environmental pollution and is safe to crops in field observation.

Description

Sterilization composition containing methine luramine and dichlobenizox and application thereof
Technical Field
The invention belongs to the field of agricultural bactericides, and particularly relates to a bactericidal composition containing methine luramine and dichlobenizox and application thereof.
Background
The chemical agent has the advantages of obvious control effect, convenience and simplicity in use and quick response, but chemical control can cause harm to life safety of people and livestock, pesticide residue after use can cause environmental pollution, and the disease resistance can be gradually enhanced after the single agent is used for a long time. The pesticide compounding is a method for using a bactericide to reduce the generation of pesticide resistance of diseases, and particularly the bactericidal composition with a synergistic effect can delay or overcome the pesticide resistance generated after screening pesticides on pests, reduce the cost and further reduce the environmental safety problem in pesticide use.
The methyl thiadiazole induced amine is a thiadiazole plant disease prevention activator jointly developed and researched by southern university. CN100420686C discloses a synthesis method of thiamine induced amine, and also discloses that the thiamine induced amine has excellent control effects on cucumber fusarium wilt, wheat fusarium graminearum, rice aspergillus oryzae, sclerotinia sclerotiorum, apple rot pathogen, banana anthracnose pathogen, cucumber anthracnose pathogen, cotton verticillium wilt and potato late blight; CN101091490A discloses that it has an excellent control effect on cucumber downy mildew. The current research result shows that the compound has good effect of inducing disease resistance to virus diseases, and the action mechanism is inducing plants to generate systemic and broad-spectrum disease resistance activity.
Dichlobeniazox is a benzothiazole bactericide, is mainly used for preventing and treating rice diseases, particularly has good prevention effect on rice blast and sheath blight, and also has excellent prevention and treatment effect on cucumber anthracnose.
Because of the non-standard use of the existing pesticide, the resistance of the disease to the pesticide is stronger and stronger, so that the use amount of the pesticide is increased year by year, and the environmental pollution is more and more serious. Therefore, the rational use of agricultural chemicals and fungicides for preparing compositions to expand the fungicidal spectrum and reduce the resistance to diseases is imminent. No report about compounding of methionin and Dichlorobentazox exists in the prior art.
Disclosure of Invention
The invention provides a bactericidal composition with excellent synergistic effect, and the specific technical scheme is as follows:
the active ingredients of the sterilizing composition comprise the following components in percentage by mass, wherein the ratio of the methyl thia-lured amine to the Dichlorobentazox is (80).
The mass ratio of the methyl thiadiazole induced amine to the Dichlorobentazox in the bactericidal composition is (40).
The mass ratio of the methyl thiadiazole induced amine to the Dichlorobentiazox in the bactericidal composition is 20-1.
The sterilization composition comprises an auxiliary agent, and the weight percentage of the active ingredients is 1-80%. Preferably, the weight percentage of the active ingredients is 10-60%.
The auxiliary agent is one or more of wetting agent, emulsifier, dispersant, suspending agent, antifreezing agent, preservative, thickener, defoaming agent, solvent, cosolvent and filler.
The preparation of the bactericidal composition is missible oil, oil suspending agent, water suspending agent, wettable powder, water dispersible granules, microemulsion, emulsion in water and granules.
The bactericidal composition is used for preventing and treating crop diseases.
The crop diseases comprise cucumber anthracnose pathogen, rice sheath blight pathogen, rice blast pathogen, cucumber downy mildew, cucumber fusarium wilt pathogen, wheat scab pathogen, rice aspergillus, rape sclerotinia sclerotiorum, apple rot pathogen, banana anthracnose pathogen, cotton verticillium wilt pathogen, potato late blight and tobacco mosaic virus. Preferably, the crop disease is cucumber downy mildew.
By adopting the technical scheme, the invention has the following beneficial effects:
when the mass ratio of the thiabendazole amine to the dichlobeniazox is 40-1; when the mass ratio of the methicillin-induced amine to the Dichlorobentazox is 20-1. The composition can effectively reduce the dosage of pesticide, slow the generation of drug resistance of diseases and reduce environmental pollution when the composition shows synergistic action. And is safe to crops in field observation
Detailed Description
The present invention will be further explained with reference to specific embodiments.
Example 1: indoor toxicity test of cucumber anthracnose virus by compounding of methicillin-resistant amine and Dichlobeniazox
Test materials:
cucumber anthracnose pathogen (Colletotrichum lagenarium); collecting and identifying in the field, and culturing and storing indoors.
The test method comprises the following steps:
the measurement was carried out by a hyphal growth rate method. Based on the preliminary experiment, a series of PDA culture media containing medicine with concentration gradient are prepared. And cutting off the bacterial blocks along the edges of the bacterial colonies by using a puncher with the diameter of 5mm, respectively placing the bacterial blocks on the medicine-containing culture media with different concentration gradients, placing the bacterial blocks in an incubator for culture, measuring the diameters of the bacterial colonies by adopting cross when the bacterial colonies of a control group grow to 4/5 of a culture dish, and calculating the growth inhibition rate of hyphae. Corresponding regression analysis is carried out according to the concentration of each single agent and the composition and the corresponding control effect to obtain the EC of each agent 50 The value is obtained.
The bacteriostasis rate% = (diameter of control colony-diameter of treated colony)/(diameter of control colony-5) × 100%.
Calculating the co-toxicity coefficient (CTC) of the mixture by using a co-toxicity coefficient calculation method of the Sun Yunpei, and determining the synergy of the mixture.
Single agent virulence index = (EC of standard agent) 50 A certain single agent EC 50 )×100;
Theoretical virulence index (TTI) = the virulence index of A single agent multiplied by the proportion of A single agent in the mixed preparation + the virulence index of B single agent multiplied by the proportion of B single agent in the mixed preparation;
observed virulence index (ATI) = (standard single dose EC) 50 EC of value/blend 50 Value) × 100;
co-toxicity coefficient (CTC) = (measured virulence index/theoretical virulence index) × 100;
the mixture has synergistic effect when CTC is greater than 120, antagonism when CTC is less than 80, and additive effect between 80-120.
Test results
As can be seen from Table 1, EC of thiamine against Colletotrichum cucumis 50 EC value of 3.2815mg/L, dichlorobentiazox for Colletotrichum cucumerinum 50 A value of 0.2408mg/L; when the mass ratio of the methyl thiadiazole induced amine to the Dichlorobentazox is 40-1; when the mass ratio of the thiabendazole amine to the dichlobeniazox is 80.
Table 1: indoor test of compounding of methicillin-induced amine and Dichlobeniazox on cucumber colletotrichum
Figure BDA0004012030070000051
Example 2: indoor toxicity test of compounding of methicillin-inducing amine and Dichlobeniazox on rice sheath blight germ
Test materials:
rhizoctonia solani (Rhizoctonia solani); collecting and identifying in the field, and culturing and storing indoors.
The test method comprises the following steps:
the measurement was carried out by the hyphal growth rate method. Based on the preliminary experiment, a series of PDA culture media containing medicine with concentration gradient are prepared. And cutting off bacterium blocks along the edges of the bacterial colonies by using a puncher with the diameter of 5mm, respectively placing the bacterium blocks on medicine-containing culture media with different concentration gradients, placing the bacterium blocks in an incubator for culture, measuring the diameter of the bacterial colonies by adopting cross when the bacterial colonies of a control group grow to 4/5 of the culture dish, and calculating the hypha growth inhibition rate. Corresponding regression analysis is carried out according to the concentration of each single agent and the composition and the corresponding control effect to obtain the EC of each agent 50 The value is obtained.
Bacteriostasis% = (control colony diameter-treated colony diameter)/(control colony diameter-5) × 100%.
Calculating the co-toxicity coefficient (CTC) of the mixture by using a co-toxicity coefficient calculation method of the Sun Yunpei, and determining the synergy of the mixture.
Single dose virulence index = (EC of standard agent) 50 A single dose of EC 50 )×100;
Theoretical virulence index (TTI) = the virulence index of A single agent multiplied by the proportion of A single agent in the mixed preparation + the virulence index of B single agent multiplied by the proportion of B single agent in the mixed preparation;
observed virulence index (ATI) = (standard single dose EC) 50 EC of value/blend 50 Value) × 100;
co-toxicity coefficient (CTC) = (measured virulence index/theoretical virulence index) × 100;
the mixture has synergistic effect when CTC is greater than 120, antagonism when CTC is less than 80, and additive effect between 80-120.
Test results
As shown in Table 2, the EC of thiamine for Rhizoctonia solani 50 The value 21.4434mg/L, EC of Dichlorobentazox against Rhizoctonia solani 50 A value of 0.8096mg/L; when the mass ratio of the methicillin-induced amine to the Dichlorobentazox is 20-1; when the mass ratio of the methicillin-induced amine to the Dichlorobentazox is 80.
Table 2: indoor test of compounding methicillin-induced amine and Dichlobeniazox on rhizoctonia solani
Figure BDA0004012030070000071
Example 3 field control of methionin and Dichlorobentazox combinations on Pyricularia oryzae
And (3) testing crop diseases: blast of rice
Testing the medicament:
30 percent of suspending agent (comprising, for example, 25 percent of methyl thiamine, 5 percent of Dichlorobentazox, 5 percent of calcium dodecyl benzene sulfonate, 3 percent of sodium lignosulfonate, 2 percent of NNO, 2 percent of glycerol, 1.5 percent of magnesium aluminum silicate, 0.5 percent of sodium benzoate, 0.5 percent of silicone defoamer, 1 percent of bentonite and water to make up 100 percent);
25 percent of suspending agent (comprising the following components, by weight, 25 percent of methyl thiadiazole induced amine, 5 percent of calcium dodecyl benzene sulfonate, 3 percent of sodium lignosulfonate, 2 percent of NNO, 2 percent of glycerol, 1.5 percent of magnesium aluminum silicate, 0.5 percent of sodium benzoate, 0.5 percent of silicone defoamer silicone oil, 1 percent of bentonite and 100 percent of water;
5 percent of suspending agent (comprising the following components in percentage by weight: dichlorobentazox 5 percent, calcium dodecyl benzene sulfonate 5 percent, sodium lignosulfonate 3 percent, NNO 2 percent, glycerol 2 percent, magnesium aluminum silicate 1.5 percent, sodium benzoate 0.5 percent, silicone defoamer silicone oil 0.5 percent, bentonite 1 percent and water to 100 percent);
the test method comprises the following steps: refer to the pesticide field efficacy test criterion (I) that the bactericide prevents and treats the rice leaf diseases. Setting a cell: each cell area is 50m 2 Randomized block permutation, trial was repeated 4 times per treatment. The pesticide is sprayed for three times on stems and leaves of the rice in the jointing stage, the booting stage and the crevasse stage respectively, and the liquid spraying amount is 40 kg/mu; the investigation was started 30d after the third dose.
The investigation method comprises the following steps: randomly taking 5 spots per cell for investigation, 50 plants per spot, and flag leaves and two leaves below the flag leaves.
Grading standard of leaf blast:
level 0: no disease;
level 1: the number of the leaf spots is less than 5, and the length is less than 1cm;
and 3, stage: 6-10 leaf spots with length larger than 1cm;
and 5, stage: 11-25 leaf spots, wherein part of the spots are connected into pieces and occupy 10-25% of the leaf area;
and 7, stage: the number of the scab of the leaf is more than 26, and the scab is connected into pieces and occupies 26-50% of the area of the leaf;
and 9, stage: the scabs are connected into pieces and occupy more than 50% of the leaf area or are completely withered.
And (3) calculating the drug effect:
disease index = Σ [ diseased leaf number at each level × relative level value ] × 100/[ total leaf number investigated × highest level representative value ]
Control effect (%) = [ (control area disease index-treatment area disease index)/control area disease index ] × 100
Test results
As can be seen from Table 2, the control effect of the 30% suspending agent on rice blast is 92.0% compared with that of the single agent; the control effect of the compound medicament on the rice blast is obviously improved, the use amount of active ingredients can be effectively reduced, the environmental pollution is reduced, and the generation of the drug resistance of diseases is slowed down; and added observations are safe for crops.
Table 3: test of field control effect of compound agent on rice blast
Figure BDA0004012030070000091
Example 4 formulation example
The agent of the present invention may also be configured as the following agents:
wettable powder:
comprises the following components in percentage by weight: 1-40% of methine luramine, 1-40% of Dichlorobentazox, 1-10% of dispersing agent, 1-10% of wetting agent and the balance of filler to 100%. Mixing the thiamine attractant, the Dichlorobentazox, the dispersing agent, the wetting agent and the filler, uniformly mixing in a mixing cylinder, crushing by an airflow crusher, and uniformly mixing to obtain the thiamine attractant Dichlorobentazox wettable powder product.
Water dispersible granules:
comprises the following components in percentage by weight: 1-40% of methine luramine, 1-40% of Dichlorobentazox, 1-10% of dispersing agent, 1-10% of wetting agent, 1-5% of disintegrating agent, 1-5% of binding agent and the balance of filling material, wherein the balance is 100%. Carrying out jet milling on the methine luramine, the Dichlorobentazox, the dispersing agent, the wetting agent, the disintegrating agent, the bonding agent, the filler and the like to obtain the required particle size, thus obtaining the granulating material. Quantitatively feeding the material into a fluidized bed granulating drier, granulating and drying to obtain the product of the thiamine-induced amine dichlobbentazox water dispersible granule.
Emulsion in water:
comprises the following components in parts by weight: 1-40% of methine luramine, 1-40% of dichlobeniazox, 1-20% of solvent and cosolvent, 1-10% of emulsifier, 0.5-5% of antifreeze, 0.1-2% of thickener, 0.1-2% of defoamer and the balance of deionized water. Mixing the formula materials, and adding the methicillin technical, dichlobeniazox technical, solvent and emulsifier together to dissolve the mixture into a uniform oil phase; mixing deionized water, an antifreeze agent, a thickening agent and a defoaming agent together to form a uniform water phase. Adding the water phase into the oil phase under high-speed stirring to obtain the aqueous emulsion of methicillin.
Microemulsion:
comprises the following components in parts by weight: 1 to 40 percent of methine luramine, 1 to 40 percent of Dichlorobentazox, 1 to 30 percent of solvent and cosolvent, 5 to 30 percent of emulsifier, 0.5 to 5 percent of antifreeze, 0.1 to 2 percent of defoamer and the balance of deionized water. Dissolving a methine luramine technical and a Dichlobeniazox technical in a reaction kettle filled with a solvent and a cosolvent; adding the emulsifier, the antifreeze agent, the defoamer and the deionized water into a reaction kettle filled with the solution, and then intensively mixing and homogenizing to finally obtain the transparent methylthioninium chloride-dichlobeniazox microemulsion.
Finally, it is also noted that the above-mentioned list is only a few specific embodiments of the present invention. All modifications which can be derived or suggested from the disclosure herein by a person skilled in the art are deemed to be within the scope of the present invention.

Claims (10)

1. The sterilizing composition containing the methine luramine is characterized in that the active ingredients comprise the methine luramine and Dichlorobentiazox, and the mass ratio of the methine luramine to the Dichlorobentiazox is 80.
2. The bactericidal composition according to claim 1, wherein the mass ratio of the thiabendazole to the dichlobenizox is 40.
3. The bactericidal composition according to claim 1, wherein the mass ratio of the thiabendazole to the dichlobenizox is 20.
4. The bactericidal composition according to any one of claims 1 to 3, wherein the bactericidal composition comprises the auxiliary agent, and the active ingredient is contained in an amount of 1 to 80% by weight.
5. The bactericidal composition of claim 4, wherein the active ingredients are present in an amount ranging from 10% to 60% by weight.
6. The bactericidal composition of claim 3, wherein the auxiliary agent is one or more of a wetting agent, an emulsifying agent, a dispersing agent, a suspending agent, an antifreezing agent, a preservative, a thickening agent, an antifoaming agent, a solvent, a cosolvent, and a filler.
7. The bactericidal composition of claim 6, wherein the bactericidal composition is formulated as emulsifiable concentrate, oil suspension, aqueous suspension, wettable powder, water dispersible granules, microemulsion, aqueous emulsion, or granules.
8. Use of the fungicidal composition according to any one of claims 1 to 7 for controlling crop diseases.
9. The use of claim 8, wherein the crop diseases comprise cucumber anthracnose, rice sheath blight, rice blast, cucumber downy mildew, cucumber fusarium wilt, wheat scab, rice mold, sclerotinia sclerotiorum, apple rot, banana anthracnose, cotton verticillium wilt, potato late blight, tobacco mosaic virus.
10. The use according to claim 9, wherein the crop diseases are cucumber anthracnose, rice sheath blight and rice blast.
CN202211657463.6A 2022-12-22 2022-12-22 Sterilization composition containing methionin and dichlobeniazox and application thereof Pending CN115943963A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN107094776A (en) * 2017-05-06 2017-08-29 北京科发伟业农药技术中心 Bactericidal composition containing isotianil
CN109452287A (en) * 2018-11-14 2019-03-12 东莞东阳光科研发有限公司 A kind of bactericidal composition and application thereof and preparation method
CN111165498A (en) * 2018-11-12 2020-05-19 东莞市东阳光菌阳氢专利农药有限公司 Bactericidal composition containing Dichlorobentiazox and fluorophenyletheramide, and application and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106538553A (en) * 2016-09-30 2017-03-29 赵青娇 A kind of bactericidal composition containing probenazole and preparation
CN107094776A (en) * 2017-05-06 2017-08-29 北京科发伟业农药技术中心 Bactericidal composition containing isotianil
CN111165498A (en) * 2018-11-12 2020-05-19 东莞市东阳光菌阳氢专利农药有限公司 Bactericidal composition containing Dichlorobentiazox and fluorophenyletheramide, and application and preparation method thereof
CN109452287A (en) * 2018-11-14 2019-03-12 东莞东阳光科研发有限公司 A kind of bactericidal composition and application thereof and preparation method

Non-Patent Citations (1)

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Title
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