CN106417366B - Iodine-containing bactericidal composition, preparation and application thereof - Google Patents
Iodine-containing bactericidal composition, preparation and application thereof Download PDFInfo
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- CN106417366B CN106417366B CN201610724339.5A CN201610724339A CN106417366B CN 106417366 B CN106417366 B CN 106417366B CN 201610724339 A CN201610724339 A CN 201610724339A CN 106417366 B CN106417366 B CN 106417366B
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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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/12—Iodine, e.g. iodophors; Compounds thereof
-
- 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/46—N-acyl derivatives
-
- 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
-
- 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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
-
- 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
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
Abstract
The invention discloses an iodine-containing bactericidal composition, a preparation and application thereof, wherein the bactericidal composition comprises a first component and a second component, the first component is iodine and iodate, the second component is one or more selected from the group consisting of prochloraz, formaldehyde, mancozeb, carbendazim, thiophanate-methyl, chlorothalonil, daphne, triadimefon, carbendazim, thiophanate, chlorothalonil, rhizopus, diniconazole, difenoconazole, flusilazole, pyraclostrobin, azoxystrobin and boscalid, and the mass ratio of the first component to the second component is (0.01-10): 1. The iodine-containing bactericidal composition provided by the invention can effectively improve the disease resistance of crops to southern blight.
Description
Technical Field
The invention relates to the field of pesticide chemical industry, and particularly relates to an iodine-containing bactericidal composition, an iodine-containing bactericidal preparation and application of the iodine-containing bactericidal composition.
Background
Southern blight is a commonly occurring important disease on crops. The disease-causing plants have more than 200 plants in 62 families, including herbaceous and woody plants, and the loss rate of serious disease can reach more than 50 percent. Tomato, eggplant, pepper, tobacco, potato and the like which are mainly harmful to solanaceae; leguminous beans, soybeans, kidney beans, peanuts, etc.; pumpkin, watermelon, melon, etc. of the cucurbitaceae family, are few dead plants caused by the damage of gramineae. In recent years, it has been reported that southern blight of crops such as hawthorn, water caltrop, clover, konjak, vanilla, kidney bean, young tea, apple, mulberry, alfalfa, pomegranate, Japanese ardisia, pod and the like occurs to different degrees in different regions.
Southern blight usually occurs at the rhizome or base of seedlings. The cortex of the affected rhizome gradually becomes brown and necrotic, and the cortex is severely rotten. After the plants are damaged, the absorption of water and nutrients is influenced, so that the plants grow badly, leaves on the overground part become small and yellow, the internodes of branches and tips are shortened, the branches and leaves are withered when the plants are serious, and the whole plants are withered after the disease spots encircle and the stems for one week.
It is known that, for sclerotium rolfsii, formaldehyde, mancozeb, carbendazim, thiophanate-methyl, chlorothalonil, ureaplastic, triadimefon, carbendazim, thiophanate, chlorothalonil, rhizopus, diniconazole, difenoconazole, propconazole, flusilazole, pyraclostrobin, azoxystrobin and boscalid have certain control effects on southern blight, but the resistance of southern blight to these agents is gradually enhanced, and the control effect on resistant strains generated after a large amount of the agents is worse.
Disclosure of Invention
In view of the above, the present application provides an iodine-containing bactericidal composition, a preparation and an application thereof, and the composition and the preparation thereof can significantly improve the disease resistance of crops to southern blight.
In order to solve the technical problems, the technical scheme provided by the invention is to provide an iodine-containing bactericidal composition, which comprises a first component and a second component, wherein the first component is iodine and iodate, and the second component is a systemic bactericide which is commonly used in the agricultural pharmacy; the mass ratio of the first component to the second component is 0.01-10: 1.
Preferably, the mass ratio of the first component to the second component is 0.1 to 10: 1.
Preferably, the mass of the first component is 0.01-15% of the total mass of the sterilizing composition; the mass of the second component is 0.01-85% of the total mass of the bactericidal composition.
More preferably, the mass of the first component is 0.1% -15% of the total mass of the sterilizing composition; the mass of the second component is 1% -85% of the total mass of the bactericidal composition.
More preferably, the mass of the first component is 1% -5% of the total mass of the sterilizing composition; the mass of the second component is 10% -40% of the total mass of the bactericidal composition.
Preferably, the first component is selected from one or more of iodine, potassium iodate, potassium hypoiodate, sodium iodate and sodium hypoiodate.
More preferably, the first component is selected from one or more of iodine, potassium iodate and potassium hypoiodate.
In the scheme of the application, iodine is an active element, the iodine has strong permeability and oxidizability, can quickly penetrate cell walls, can oxidize active genes of protoplasm protein of pathogenic microorganisms, and can be combined with amino groups of protein molecules to denature and precipitate the protein of the pathogenic microorganisms, so that the microorganisms die. The hypoiodic acid has strong oxidation effect, is a broad-spectrum, high-efficiency and quick-acting bactericide, and can effectively kill most pathogenic microorganisms such as bacterial propagules, spores, viruses, fungi, protozoa, phages and the like.
Iodate is sprayed on the surface of a plant and enters the body of the plant, has stronger oxidation effect and can kill pathogens, and the reduction product iodine and hypoiodate can continuously exert the drug effect of killing pathogenic microorganisms. Hydroiodides such as potassium iodide and sodium iodide can be converted into iodine when exposed to an oxidizing agent, and can also increase the iodine solubility in water and in the plant cell sap. Iodine can also be converted into hypoiodite in plants for playing a role.
Preferably, the second component is selected from one or more of prochloraz, formaldehyde, mancozeb, carbendazim, thiophanate methyl, chlorothalonil, uredovum, triadimefon, thiophanate, chlorothalonil, rhizopus, diniconazole, difenoconazole, propyza blinii, prochloraz, fludioxonil, difenoconazole, propiconazole, flusilazole, pyraclostrobin, azoxystrobin and boscalid.
More preferably, the second component is selected from diniconazole and/or fludioxonil.
The bactericide is a broad-spectrum bactericide and is a systemic bactericide, and the systemic bactericide can be absorbed by leaves, stems, roots and seeds of plants, can prevent and control some diseases penetrating into the plants or seeds in endosperm of the plants through the transmission, diffusion, retention or generation of metabolites of the plants through plant body fluid, so as to protect the crops from being infected by pathogens or treat infected plants, and therefore, the bactericide has treatment and protection effects. These bactericides have a certain control effect on southern blight, but the resistance of southern blight to these agents is gradually increased, and the control effect on resistant strains produced after a large amount of these agents is worse.
The invention also provides an iodine-containing bactericide, which consists of the bactericidal composition and an agriculturally acceptable auxiliary agent.
Preferably, the iodine-containing bactericide can be in the form of emulsifiable concentrate, directly sprayable solution, dilutable emulsion, wettable powder, soluble powder, granule or microcapsule.
Wherein the total mass of the sterilization composition in the iodine-containing bactericide is 1-50% of the total mass of the preparation.
Preferably, the total mass of the bactericidal composition in the iodine-containing bactericide is 1-20% of the total mass of the preparation.
Wherein the iodine-containing biocide, if in the form of a concentrate requiring dilution with water prior to use, will contain higher amounts of active ingredient than a composition ready for use without dilution.
The invention also provides application of the iodine-containing bactericidal composition in improving the disease resistance of crops to the southern blight.
Preferably, the crops are crops of solanaceae, leguminosae, cucurbitaceae and the like.
Preferably, the solanaceous crops include tomatoes, eggplants, peppers, tobaccos and potatoes; the leguminous crops comprise semen Phaseoli Radiati, semen glycines, semen Phaseoli vulgaris, and semen Arachidis Hypogaeae; the cucurbits include pumpkins, watermelons and melons.
The specific implementation mode of the plant growth regulating composition preparation is that the sterilization composition containing iodine and iodate thereof and bactericide commonly used in agriculture and pharmacy is mixed with the auxiliary agent, and then is crushed and/or stirred for dissolution. In addition, it is also possible to use surface-active compounds (surfactants) for the preparation of formulations, wherein the surface-active compounds are nonionic, cationic, anionic and/or amphoteric surfactants and surfactant mixtures having good emulsifying, dispersing and wetting properties.
The current commonly used bactericides on the market have certain control effect on the southern blight, but the resistance of the southern blight to the medicaments is gradually strengthened, and the control effect on resistant strains generated after a large amount of the medicaments are used is worse. At present, the iodine and the bactericide are not combined to be used as a sterilizing composition, and the iodine-containing bactericide is used together with the common bactericide to obviously enhance the control effect of the medicament on the southern blight.
The invention mixes and applies the iodine or iodate and the systemic fungicide commonly used in the agricultural pharmacy, and the experimental data shows that the mixed application of the iodine or iodate and the systemic fungicide has obviously improved sterilization effect compared with the single use of the iodine or the single use of the commonly used fungicide, and the best effect is achieved when the first component is the iodine and the second component is the fludioxonil.
Detailed Description
The present invention is described in further detail below with reference to specific examples for the purpose of enabling those skilled in the art to better understand the technical solutions of the present invention, but it should be understood that the descriptions are only for the purpose of further explaining the features and advantages of the present invention and are not intended to limit the patent claims of the present invention.
In order to achieve the above object, the present invention provides the following technical solutions:
the iodine-containing bactericidal composition comprises a first component and a second component, wherein the first component is iodine and iodate, the second component is a systemic bactericide commonly used in the agricultural pharmacy, the mass ratio of the first component to the second component is 0.01-10: 1, and preferably, the mass ratio of the first component to the second component is 0.1-10: 1.
The first component of the bactericidal composition is one or more selected from iodine, potassium iodate, potassium hypoiodate, sodium iodate and sodium hypoiodate.
Wherein the second component in the bactericidal composition is selected from one or more of prochloraz, formaldehyde, mancozeb, carbendazim, thiophanate methyl, chlorothalonil, uredoic mildew, triadimefon, carbendazim, thiophanate, chlorothalonil, rhizopus, diniconazole, difenoconazole, propranolol, flusilazole, pyraclostrobin, azoxystrobin and boscalid.
In some embodiments of the invention, the first component is selected from iodine and/or potassium iodate;
in some embodiments of the invention, the second component is selected from diniconazole and/or fludioxonil.
According to the invention, the mass of the first component is 0.01-10%, preferably 0.1-10%, more preferably 1-5% of the total mass of the bactericidal composition; the mass of the second component is 0.01-80%, preferably 1-50%, and more preferably 10-40% of the total mass of the bactericidal composition.
When the bactericidal composition containing the first component and the second component is applied according to a method known by a person skilled in the art, the different bactericides are formed by matching with agriculturally and pharmaceutically acceptable auxiliary materials. The bactericide can be missible oil, directly sprayable solution, dilutable emulsion, wettable powder, soluble powder, granule or microcapsule. The preparations are prepared by methods known to the person skilled in the art, by mixing the fungicide with the agriculturally and pharmaceutically acceptable adjuvants, grinding and/or dissolving with stirring, and by additionally using surface-active compounds (surfactants).
Preferably, the surface-active compounds are nonionic, cationic, anionic and/or amphoteric surfactants and surfactant mixtures having good emulsifying, dispersing and wetting properties.
In the preparation, the mass percentage of the iodine-containing sterilization composition is 1-50% of the total mass of the preparation, and more preferably 1-20%. If the formulation is in the form of a concentrate, it is required to be diluted with water before use.
The invention also provides application of the bactericidal composition in enhancing the disease resistance of crops to southern blight. The crops are solanaceae, leguminous, cucurbitaceae and the like.
Iodine is an active element, has strong permeability and oxidizability, can quickly penetrate cell walls, can oxidize active genes of pathogenic microorganism protoplasm protein, and can be combined with amino groups of protein molecules to denature and precipitate the protein, so that the microorganism dies. The hypoiodic acid has strong oxidation effect, is a broad-spectrum, high-efficiency and quick-acting bactericide, and can effectively kill most pathogenic microorganisms such as bacterial propagules, spores, viruses, fungi, protozoa, phages and the like.
Iodate is sprayed on the surface of a plant and enters the body of the plant, has stronger oxidation effect and can kill pathogens, and the reduction product iodine and hypoiodate can continuously exert the drug effect of killing pathogenic microorganisms. Hydroiodides such as potassium iodide and sodium iodide can be converted into iodine when exposed to an oxidizing agent, and can also increase the iodine solubility in water and in the plant cell sap. Iodine can also be converted into hypoiodite in plants for playing a role.
The inventor of the invention has proved through a large number of experiments that the antibacterial property of iodine or iodate and bactericide commonly used in agriculture and pharmacy can be fully exerted when the iodine or iodate and the bactericide are mixed and applied, and the capability of the crops for resisting southern blight is obviously enhanced.
Example 1
The preparation method comprises the following steps: dispersing iodine with ethanol, adsorbing with white carbon black, mixing with diniconazole, alkyl naphthalene sulfonate formaldehyde condensate (dispersant), sodium alkyl benzene sulfonate, and diatomite, and jet-milling.
Example 2
The preparation method comprises the following steps: dispersing iodine with ethanol, adsorbing with white carbon black, mixing with potassium iodide, metalaxyl, methyl naphthalene sulfonate, fatty alcohol polyoxyethylene ether and diatomite, and jet milling.
Example 3
The preparation method comprises the following steps: mixing potassium hypoiodite, fludioxonil, alkyl naphthalene sulfonate formaldehyde condensate, sodium alkyl benzene sulfonate and diatomite uniformly, and performing jet milling.
Example 4
The preparation method comprises the following steps: dissolving potassium iodate and potassium hypoiodite in water, adding polycarboxylate, alkylphenol formaldehyde resin polyoxyethylene ether sulfate, xanthan gum, sodium benzoate and magnesium aluminum silicate, uniformly dispersing to obtain a water phase, adding the azoxystrobin raw drug into the water phase, uniformly dispersing, and then sanding in a sand mill until D is reached98Less than 5um can be discharged and unpackaged.
Example 5
The preparation method comprises the following steps: dissolving potassium iodate and potassium hypoiodite in water, adding polycarboxylate, alkylphenol formaldehyde resin polyoxyethylene ether sulfate, xanthan gum, sodium benzoate and magnesium aluminum silicate, uniformly dispersing to obtain a water phase, adding the difenoconazole technical material into the water phase, uniformly dispersing, and then sanding in a sand mill until D is reached98Less than 5um can be discharged and unpackaged.
Example 5
The preparation method comprises the following steps: dissolving potassium iodate and potassium hypoiodate in water, adding polycarboxylate, SOPA, xanthan gum, sodium benzoate and magnesium aluminum silicate, uniformly dispersing to obtain a water phase, adding the difenoconazole technical material into the water phase,after being dispersed uniformly, the mixture enters a sand mill to be sanded to D98Less than 5um can be discharged and unpackaged.
Example 6
Test of field efficacy of preventing and treating southern blight of herba Houttuyniae
Inoculating sclerotium rolfsii cultured on a PDA culture medium into soil at the root of the herba Houttuyniae, inoculating 5 sclerotium per strain, maintaining high humidity in the field after inoculation, applying the medicine for two days, applying the medicine once every 7 days, and continuously applying the medicine for 3 times. Each treatment was repeated 3 times, 50 plants per cell, randomly arranged, and the disease was investigated 7 days after each treatment.
TABLE 1 Tremella fuciformis root field drug effect experimental data
Experiments show that when the first component is iodine and the second component is fludioxonil, and the mass ratio of the iodine to the fludioxonil is 1:0.4, the bactericidal composition has the best effect of resisting southern blight on the couchback roots, the control effect can reach more than 98%, and the disease resistance of the couchback roots is obviously improved.
Example 7
Test of field efficacy of preventing and treating southern blight of herba Houttuyniae
Inoculating sclerotium rolfsii cultured on a PDA culture medium into soil at the root of the herba Houttuyniae, inoculating 5 sclerotium per strain, maintaining high humidity in the field after inoculation, applying the medicine for two days, applying the medicine once every 7 days, and continuously applying the medicine for 3 times. Each treatment was repeated 3 times, 50 plants per cell, randomly arranged, and the disease was investigated 7 days after each treatment.
TABLE 2 Tremella fuciformis root field drug effect experimental data
Experiments show that when the first component is potassium iodate and the second component is fludioxonil, and the mass ratio of potassium iodate (calculated by iodine element) to fludioxonil is 1:0.4, the bactericidal composition has the best effect of resisting southern blight on the folded auricular root, the control effect can reach more than 98%, and the disease resistance of the folded auricular root is obviously improved.
Example 8
Capsicum southern blight field drug effect test
Inoculating sclerotium of white silk cultured on PDA culture medium in the soil of hot pepper root, keep the higher humidity of the field after inoculating, begin to apply medicines two days after inoculating, use. Each treatment was repeated 3 times, 50 plants per cell, randomly arranged, and the disease was investigated 7 days after each treatment.
TABLE 3 Pepper field efficacy experimental data
From the experiments, when the first component is iodine and the second component is fludioxonil, and the mass ratio of the iodine to the fludioxonil is 1:0.4, the effect of the sterilization composition on the southern blight resistance of crops is obviously higher than that of the sterilization composition when the iodine or the fludioxonil is used alone, so that the sterilization composition and the fludioxonil are mixed for use, the compounded synergistic effect is achieved, the prevention effect can reach more than 99%, and the southern blight resistance of the peppers is obviously improved.
Example 9
Pepper southern blight prevention and control field efficacy test
Inoculating sclerotium rolfsii cultured on a PDA culture medium into soil at the root of the herba Houttuyniae, inoculating 5 sclerotium per strain, maintaining high humidity in the field after inoculation, applying the medicine for two days, applying the medicine once every 7 days, and continuously applying the medicine for 3 times. Each treatment was repeated 3 times, 50 plants per cell, randomly arranged, and the disease was investigated 7 days after each treatment.
TABLE 4 Tremella fuciformis root field drug effect experimental data
From the experiments, when the first component is potassium iodate and the second component is fludioxonil, and the mass ratio of the potassium iodate (calculated by iodine elements) to the fludioxonil is 1:0.4, the effect of the sterilization composition on the southern blight resistance of the hot pepper is obviously higher than that of the sterilization composition when the potassium iodate or the fludioxonil is singly used, so that the sterilization composition and the fludioxonil are mixed for use, the compounded synergistic effect is achieved, the control effect can reach more than 99%, and the southern blight resistance of the hot pepper is obviously improved.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (6)
1. An iodine-containing germicidal composition comprising a first component and a second component, wherein the first component is iodine or potassium iodate, and the second component is one selected from the group consisting of diniconazole, fludioxonil and difenoconazole; the mass ratio of the first component to the diniconazole is 1 (0.8-8); the mass ratio of the first component to the fludioxonil is 1 (0.4-4); the mass ratio of the first component to the difenoconazole is 1 (0.4-4); the first component is used at the concentration of 1, 2, 4 and 10ppm, the diniconazole is used at the concentration of 8ppm, the fludioxonil is used at the concentration of 4ppm, and the difenoconazole is used at the concentration of 4 ppm.
2. The germicidal composition of claim 1, wherein the second component is selected from the group consisting of diniconazole and fludioxonil.
3. An iodine-containing fungicidal composition preparation, characterized in that it consists of the fungicidal composition of claim 1 or 2 and an agriculturally acceptable adjuvant.
4. The bactericidal composition formulation of claim 3, wherein the mass of the bactericidal composition is between 1% and 50% of the total mass of the formulation.
5. The use of the fungicidal composition according to claim 1 or 2 for the control of southern blight of crops.
6. Use according to claim 5, wherein the crop plants are solanaceous, leguminous, cucurbitaceous.
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