CN114568440B - Sterilization composition containing fluopyram and fludioxonil and application thereof - Google Patents
Sterilization composition containing fluopyram and fludioxonil and application thereof Download PDFInfo
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- CN114568440B CN114568440B CN202210359989.XA CN202210359989A CN114568440B CN 114568440 B CN114568440 B CN 114568440B CN 202210359989 A CN202210359989 A CN 202210359989A CN 114568440 B CN114568440 B CN 114568440B
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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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
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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
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/36—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom five-membered rings
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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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing acyclic or cycloaliphatic radicals
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against 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 provides an application of a bactericidal composition containing fluopyram and fludioxonil for controlling gray mold, wherein the active ingredients consist of the fluopyram and fludioxonil, and the mass ratio of the fluopyram to the fludioxonil is 3:1; the bactericidal composition also comprises a synergistic auxiliary agent, wherein the synergistic auxiliary agent is one or two of lecithin and tea saponin. The bactericidal composition has remarkable synergism, and can remarkably reduce the dosage of active ingredients after adding the synergism auxiliary agent, slow down the generation of drug resistance and lighten environmental pollution.
Description
Technical Field
The invention relates to the technical field of pesticides, in particular to a sterilization composition containing fluopyram and fludioxonil and application thereof.
Background
Gray mold is a plant fungal disease caused by botrytis cinerea, and can be used for damaging more than 200 crops, including vegetables, fruit trees, ornamental plants and the like. Botrytis cinerea infects plant stems, leaves, flowers and fruits, causing plant cataplexy, fallen leaves, flower rot and rotten fruits, and causing serious yield loss; can also harm fruits during post-harvest storage, reducing fruit quality. Because of the lack of crop germplasm resources for resisting gray mold, the chemical agent is the most convenient and effective way for preventing and controlling the gray mold. At present, the agents for preventing and treating gray mold at home and abroad mainly comprise benzimidazoles, anilinopyrimidines, dicarboximides, methoxy acrylic esters, succinic dehydrogenase inhibitors and sterol biosynthesis inhibitors. Botrytis cinerea has high drug resistance risk, and is extremely easy to generate drug resistance and even multiple drug resistance.
At present, from the research and development point of view, the following approaches are mainly adopted to avoid drug resistance: 1. developing new drugs with new mechanisms of action; 2. compounding medicaments with different action mechanisms, and searching for a synergistic composition; 3. development of synergistic auxiliary agents, further promotion of sterilization efficiency and slowing of dosage of the medicament; etc. Wherein the drug compounding and the synergistic agent screening are the hot spots of domestic pesticide disclosure research.
Fluopicolide belongs to pyridine ethyl benzamide in succinate dehydrogenase inhibitors and is used for preventing and treating powdery mildew, sclerotinia, gray mold, brown spot and the like on various crops. The main action mechanism is to form a hydrogen bond with the conserved end of a ubiquinone binding site (Q-site), participate in the aromatic circulation of an amino group through the interaction of a heterocyclic atom and a hydrophobic group, block the energy metabolism of the amino group, further inhibit the growth of pathogenic bacteria and achieve the purpose of disease control.
Fludioxonil is a novel pyrrole non-systemic broad-spectrum bactericide, which is derived from natural product nitropyrrolins, and has the action mechanism of inhibiting transferase related to glucose phosphorylation of thalli and inhibiting growth of fungus mycelia, so that bacteria death is caused. Has good protection and treatment effects on diseases caused by pathogenic bacteria such as Alternaria, cellospora, aspergillus, fusarium, helminthosporium, rhizoctonia, penicillium, etc.
The prior patent application (Hailier pharmaceutical Co., ltd., CN 201210519164) only discloses that fluopyram and fludioxonil are mixed for controlling powdery mildew and downy mildew, and no related report of using two groups of combinations for controlling gray mold is available. There is also no associated product registration in the pesticide information network.
Further, as the amount of chemical agents used increases year by year, side effects on the environment are also of great concern. In order to reduce the dosage of the medicament, the synergistic auxiliary agent is added to achieve the effects of pesticide reduction and synergy. The addition of agricultural synergist to pesticide liquid is an important means for raising the effective utilization rate of pesticide and reducing the pesticide consumption. The agricultural synergist has no activity or weak activity, but can obviously improve the dispersion, wetting, spreading, detention and permeability of the agricultural synergist when being mixed with related pesticides, reduce the drift of spray liquid medicine along with wind (or airflow), prevent or reduce the damage to adjacent sensitive crops and the like, facilitate the adhesion and spreading of the liquid medicine on leaf surfaces, reduce the decomposition of ultraviolet rays on active ingredients in pesticide preparations, and achieve the purposes of prolonging the effective period of pesticide effect, improving the activity, reducing the dosage and the cost of the pesticide and protecting the environment.
In order to solve the problems in the prior art, the invention provides the bactericidal composition containing fluopyram and fludioxonil and the application thereof, and the composition has remarkable synergistic effect, can reduce the dosage of bactericidal active ingredients and lightens environmental pollution.
Disclosure of Invention
The invention aims to provide a bactericidal composition containing fluopyram and fludioxonil and application thereof, so as to solve the technical problems of serious drug resistance and large dosage of medicaments in the prior art.
The specific technical scheme is as follows:
the application of the bactericidal composition containing fluopyram and fludioxonil for controlling gray mold comprises the active ingredients of fluopyram and fludioxonil, and the mass ratio of the fluopyram to the fludioxonil is 3:1.
The bactericidal composition also comprises a synergistic auxiliary agent, wherein the synergistic auxiliary agent is one or two of lecithin and tea saponin. The preferred synergistic auxiliary agent consists of lecithin and tea saponin, wherein the mass ratio of the lecithin to the tea saponin is 1:5-5:1. More preferably, the mass ratio of lecithin to tea saponin is 1:1.
The preparation of the bactericidal composition is suspending agent, wettable powder and water dispersible granule. Preferably suspending agent, wherein the mass percentage of active ingredients is 10-40%; the mass percentage of the synergistic auxiliary agent is 1-10%.
Preferably, the suspending agent is 20% fluopyram-fludioxonil suspending agent, and comprises the following components in percentage by weight: 15% of fluopyram, 5% of fludioxonil, 2700% of polycarboxylate Tersperse, 2% of naphthalene sulfonate D-425, 1% of dispersing agent NNO, 3% of glycol, 2% of synergistic agent (mass ratio of lecithin to tea saponin is 1:1), 0.2% of xanthan gum, 0.1% of sodium benzoate, 0.1% of organosilicon defoamer and 100% of deionized water.
The invention also provides the following scheme: the pesticide synergistic auxiliary agent is used for improving the control effect of the combination of fluopyram and fludioxonil on the gray mold of cucumber, and is one or two of lecithin and tea saponin.
The beneficial technical effects are as follows:
1. the composition has remarkable synergistic effect on cucumber gray mold when the mass ratio of fluopyram to fludioxonil is 3:1; when the composition shows synergistic effect, the dosage of the active ingredients can be obviously reduced, the generation of drug resistance of diseases is slowed down, and the composition has important popularization and application values. 2. When lecithin and tea saponin are combined in the pesticide synergistic auxiliary agent, the control effect of the bactericide combination fluopyram and fludioxonil on the gray mold of cucumbers and tomatoes is obviously improved, and the pesticide synergistic auxiliary agent lecithin and tea saponin have obvious synergistic effect.
Detailed Description
The invention is further illustrated with reference to specific embodiments.
Example 1 determination of the Combined action of Fluopyram and fludioxonil on Botrytis cinerea
Test disease: the botrytis cinerea is obtained by single spore isolation from diseased cucumbers, and is cultivated and preserved in the laboratory.
The testing method comprises the following steps: the hypha growth rate was measured. PDA plates with different medicament concentrations are set according to the pre-experiment, meanwhile, a non-drug plate is set as a control, a puncher is used for punching a fungus dish at the edge of a pre-cultured colony, the front face of the fungus dish is downwards inoculated on the drug-containing plate, each treatment is repeated for 4 times, and the fungus dish is placed in a 27 ℃ incubator for dark culture. After 4d, colony diameter was measured using the crisscross method, hypha inhibition was calculated, and the EC50 of the concentration in inhibition was determined using data processing software. And evaluating the combined effect of the medicaments by adopting a grand cloud Peel method.
The test results show that the fluopyram and fludioxonil compound show different combined actions on the gray mold bacteria of cucumber under different proportioning conditions from Table 1. The additive effect is shown on the gray mold of the cucumber when the mass ratio of the fluopyram to the fludioxonil is 9:1, 1:11:9 and 1:15. Antagonism is shown on the gray mold of the cucumber when the mass ratio of fluopyram to fludioxonil is 15:1 and 1:1; the bactericidal composition with antagonism is not suitable for popularization and use in production. The composition has remarkable synergistic effect on cucumber gray mold when the mass ratio of fluopyram to fludioxonil is 3:1; when the composition shows synergistic effect, the dosage of the active ingredients can be obviously reduced, the generation of drug resistance of diseases is slowed down, and the composition has important popularization and application values.
Table 1: determination result of combined action of fluopyram and fludioxonil on gray mold
Example 2 influence of pesticide synergistic adjuvant on prevention and control effects of pesticide on vegetable leaf gray mold.
Test crop targets: gray mold of greenhouse tomatoes; gray mold of greenhouse cucumber;
test agent:
agent a:
20% fluopyram-fludioxonil suspension, which comprises the following components in percentage by weight:
15% of fluopyram, 5% of fludioxonil, 2700% of polycarboxylate Tersperse, 2% of naphthalene sulfonate D-425, 1% of dispersing agent NNO, 3% of glycol, 2% of synergistic agent (mass ratio of lecithin to tea saponin is 1:1), 0.2% of xanthan gum, 0.1% of sodium benzoate, 0.1% of organosilicon defoamer and 100% of deionized water.
Medicament B
20% fluopyram-fludioxonil suspension, which comprises the following components in percentage by weight:
15% of fluopyram, 5% of fludioxonil, 2702% of polycarboxylate Tersperse, 2% of naphthalene sulfonate D-425, 1% of dispersing agent NNO, 3% of ethylene glycol, 2% of synergistic agent (lecithin), 0.2% of xanthan gum, 0.1% of sodium benzoate, 0.1% of organosilicon defoamer and 100% of deionized water.
Medicament C
20% fluopyram-fludioxonil suspension, which comprises the following components in percentage by weight:
15% of fluopyram, 5% of fludioxonil, 2702% of polycarboxylate Tersperse, 2% of naphthalene sulfonate D-425, 1% of dispersing agent NNO, 3% of glycol, 2% of synergistic agent (tea saponin), 0.2% of xanthan gum, 0.1% of sodium benzoate, 0.1% of organosilicon defoamer and 100% of deionized water.
Medicament D
20% fluopyram-fludioxonil suspension, which comprises the following components in percentage by weight:
15% of fluopyram, 5% of fludioxonil, 2702% of polycarboxylate Tersperse, 2% of naphthalene sulfonate D-425%, 1% of dispersing agent NNO, 3% of glycol, 2% of synergistic additive, 0.2% of xanthan gum, 0.1% of sodium benzoate, 0.1% of organosilicon defoamer and 100% of deionized water.
The test method comprises the following steps: referring to GB/T17980.28-2000 pesticide field test guidelines, the bactericide is used for controlling vegetable gray mold. Drug treatment and blank control are set, and cells are arranged in random groups. The first spray application was started at the beginning of the onset, followed by 1 spray every 7d for a total of 3 doses.
The investigation method comprises the following steps: and (3) carrying out investigation 7d after the third application, randomly sampling 5 points per cell, selecting 3 plants per point, investigating all leaves per plant, and counting the number of leaf disease grades investigated per cell according to the following grading standard. The number of pre-drug conditions was not investigated as the first pre-drug administration was rarely sporadic.
Blade damage classification method (taking blade as unit)
Level 0: no disease spots;
stage 1: 3 disease spots are arranged on a single leaf;
3 stages: 4-6 disease spots are arranged on a single leaf;
5 stages: 7-10 disease spots are arranged on a single leaf;
7 stages: the single leaf has 11-20 disease spots, and part of the single leaf is densely packed into a sheet;
stage 9: the area of each single leaf with the disease spots densely occupies more than 1/4 of the leaf area.
The calculation method comprises the following steps:
disease index = Σ (leaf number of each stage x relative stage number)/(total number of investigation x 9) x 100,
control effect (%) = (disease index of blank control area-disease index of agent treatment area)/disease index of blank control area×100.
Test results: as shown in tables 1-2, the suspension preparation can improve the control effect of the bactericide combination fluopyram and fludioxonil on the gray mold of cucumber by adding pesticide synergistic auxiliary agents (lecithin and/or tea saponin). After lecithin was added alone, the sterilization effect was improved, but a significant difference was not achieved. When lecithin and tea saponin are combined in the pesticide synergistic auxiliary agent, the control effect of the bactericide combination fluopyram and fludioxonil on the gray mold of cucumbers and tomatoes is obviously improved, and the pesticide synergistic auxiliary agent lecithin and tea saponin have obvious synergistic effect.
Table 1: determination result of control effect of 20% suspending agent on gray mold of cucumber leaf
Remarks: the lower case letters after the same column of data indicate significant differences in the P < 0.05 level.
Table 2:20% suspending agent control effect determination result on gray mold of tomato leaf
Remarks: the lower case letters after the same column of data indicate significant differences in the P < 0.05 level.
Example 3 20% fluopyram fludioxonil suspension formulation Performance index test
According to the method for measuring the performance index of the suspending agent, performance index test is carried out on the medicament A-medicament D, and the measurement result is as follows: the medicament A-medicament D are all qualified preparations
Table 3 20% fluopyram fludioxonil suspension formulation Performance index test
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same.
Claims (1)
1. Use of a bactericidal composition containing fluopyram and fludioxonil for controlling gray mold, characterized in that the bactericidal composition comprises the following components in percentage by weight: 15% of fluopyram, 5% of fludioxonil, 2702% of polycarboxylate Tersperse, 2% of naphthalene sulfonate D-425, 1% of dispersing agent NNO, 3% of glycol, 2% of synergistic additive, 0.2% of xanthan gum, 0.1% of sodium benzoate, 0.1% of organosilicon defoamer and 100% of deionized water;
the synergistic auxiliary agent is as follows: the mass ratio of lecithin to tea saponin is 1:1;
the preparation of the bactericidal composition is a suspending agent.
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