CN110622976A - Pesticide sterilization composition and application thereof - Google Patents
Pesticide sterilization composition and application thereof Download PDFInfo
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- CN110622976A CN110622976A CN201911011522.0A CN201911011522A CN110622976A CN 110622976 A CN110622976 A CN 110622976A CN 201911011522 A CN201911011522 A CN 201911011522A CN 110622976 A CN110622976 A CN 110622976A
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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
- A01N43/48—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
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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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/60—1,4-Diazines; Hydrogenated 1,4-diazines
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Abstract
The invention relates to the technical field of pesticides, and discloses a pesticide sterilization composition and application thereof. The bactericidal composition comprises shenqinmycin and cyprodinil. The effective active ingredients of the bactericidal composition, namely the shenqinmycin and the cyprodinil, show good synergistic effect in a specific range, the field control effect is obviously higher than that of a single agent, the pesticide application frequency can be reduced, and the pesticide application cost for preventing and controlling crop pests can be effectively reduced; meanwhile, the resistance risk is low, and a new choice is provided for the treatment of disease groups with drug resistance of the existing bactericide.
Description
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to a pesticide sterilization composition and application thereof.
Background
The fungal hazard is also called fungal disease, is an infectious disease of plants, can be infected mutually, has an infection process, and is a parasite fungus generally serving as a pathogen. The fungal diseases are various and account for more than 70-80% of all plant diseases, are widely distributed in China, are harmful in fields, and also harm fruits due to the latent infection characteristic, so that the yield is reduced, the fruits lose commodity value, the loss is large, and the fruit production safety is seriously influenced.
Because of continuous cropping of a single crop all the year round, the disease has a severe situation of high-frequency outbreak and compound infection of various germs. A new compound, if used singly for a long time, is at risk of high resistance and even failure. The occurrence of one disease induces the subsequent occurrence of other diseases, causing devastating harm to crops. By combining the planting conditions, a grower needs to wait for an efficient and scientific disease management tool.
Cyprodinil (Cyprodinil) has an action mechanism of methionine biosynthesis inhibitor, and acts after spore germination to inhibit the penetration process of fungi and the growth of mycelium. Has no cross resistance with triazoles, imidazoles, morpholines, phenylpyrroles and the like. Is mainly used for preventing and treating gray mold, powdery mildew and the like. But the cyprodinil control spectrum is relatively narrow, and the cyprodinil is singly, continuously and incrementally used for a long time, so that the cyprodinil is not beneficial to the effective control of diseases, and can generate great resistance risk.
The compounding of the pesticide is a scientific scheme for avoiding the resistance of the product caused by plant diseases and insect pests, and the new compound is compounded with other components, so that the resistance can be effectively solved. In addition, the combination of active ingredients after mixing of different active ingredients is usually expressed as synergy, additive effect or antagonism due to the differences in composition, structure, physicochemical properties of the active ingredients. The synergistic effect is the mutual cooperation between different substances, and the generated effect is larger than the sum of the effects of the components; and additive action is that it produces an effect equal to the sum of the effects of the individual components; antagonism is a phenomenon in which when two substances act on a living organism, one substance interferes with the effect of the other substance or interferes with each other, so that the overall effect is reduced. Therefore, how to select the compounded pesticide components is a key factor for simultaneously solving the problem of resistance and improving the control effect.
Disclosure of Invention
In view of the above, the present invention aims to provide a pesticide bactericidal composition with synergistic effect, so that the bactericidal active ingredients can synergistically improve the control effect of each other;
the invention also aims to provide application of the pesticide bactericidal composition in crop disease resistance and application in preparation of related pesticide formulations.
In order to achieve the above purpose, the invention provides the following technical scheme:
a pesticide sterilization composition comprises shenqinmycin and cyprodinil, and can also consist of shenqinmycin and cyprodinil.
The shenqinmycin is a fermentation product of pseudomonas fluorescens M18, mainly contains phenazine-1-carboxylic acid (phenazine-1-carboxylic acid), has the characteristics of high efficiency, low toxicity, broad spectrum, no public hazard and good environmental compatibility, and has excellent prevention effect on most fungal diseases. The application method is various, and the plant spray can be used for blade spraying of crops, and can also be used for root treatment and seed treatment of the crops.
The tests of the invention show that the two effective components of the shenqinmycin and the cyprodinil have certain synergistic effect in a reasonable range, can reduce the usage amount of the active components of the pesticide and improve the control effect. The mass ratio of the shenqinmycin to the cyprodinil is preferably 50:1-1:50, preferably 20:1-1:20, and more preferably 5: 1-1: 5. In a specific embodiment of the invention, the mass ratio of the shenqinmycin to the cyprodinil is 1:50, 1:20, 1:10, 1:5, 1:1, 5:1, 10:1, 20:1 or 50: 1.
The invention carries out indoor toxicity measurement on the compound composition of the shenqinmycin and the cyprodinil, takes the tomato gray mold and the wheat powdery mildew as test objects, and the result shows that after the compound of the shenqinmycin and the cyprodinil, compared with a single dose, the compound composition has obvious synergistic effect on the control effect of the tomato gray mold and the wheat powdery mildew, and the synergistic effect is especially obvious within the range of 1: 20-20: 1. The corresponding field control effect test also shows obviously higher control effect than that of a single agent. Therefore, the invention provides the application of the pesticide sterilization composition in preventing and treating crop fungal diseases and the application in preparing pesticide preparations for preventing and treating crop fungal diseases.
Wherein the crop fungal diseases are crop gray mold diseases or powdery mildew diseases. In a specific embodiment of the invention, the botrytis diseases are tomato botrytis, pepper botrytis, strawberry botrytis, grape botrytis, lettuce botrytis and cherry botrytis; the powdery mildew diseases comprise wheat powdery mildew, cucumber powdery mildew, apple powdery mildew and eggplant powdery mildew.
According to the application, the invention also provides a pesticide preparation for preventing and treating crop diseases, which comprises the bactericidal composition and a pesticide acceptable auxiliary agent.
Wherein, the bactericidal composition accounts for 5 to 80 percent of the total weight of the whole pesticide preparation. The preparation method can be used for preparing any agriculturally acceptable dosage form by selecting auxiliary materials according to a method known in the art, and the preferred dosage form is wettable powder, suspending agent, suspoemulsion or water dispersible granules.
The adjuvant may be one well known to those skilled in the art as being suitable for use in pesticide formulations, and the present invention preferably includes one or a mixture of two or more of dispersants, wetting agents, emulsifiers, spreaders, stabilizers, thickeners, antifreeze agents, disintegrants, binders, antifoam agents, film formers, colorants, fillers and solvents.
According to the technical scheme, the effective active ingredients of the bactericidal composition, namely the shenqinmycin and the cyprodinil, show good synergistic effect in a specific range, the field control effect is obviously higher than that of a single agent, the pesticide application frequency can be reduced, and the pesticide application cost for controlling the crop pests can be effectively reduced; meanwhile, the resistance risk is low, and a new choice is provided for the treatment of disease groups with drug resistance of the existing bactericide.
Detailed Description
The invention discloses a pesticide sterilization composition and application thereof, and a person skilled in the art can use the contents to reference the contents and appropriately improve process parameters to realize the purpose. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the germicidal compositions and applications of the present invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the art that the techniques of the present invention may be implemented and applied by modifying or appropriately modifying and combining the germicidal compositions and applications described herein without departing from the spirit, scope, and spirit of the invention.
The compositions described herein may be provided in a finished formulation, i.e., the components of the composition are already mixed, or the components of the composition may be provided in a single dose, mixed directly in a tub or tank prior to use, and then diluted to the desired concentration.
The pesticide sterilization composition and the application thereof provided by the invention are further explained below.
Example 1: indoor toxicity determination method for tomato gray mold by compounding shenqinmycin and cyprodinil
Test subjects: tomato gray mold pathogen (picked from field and separated and purified)
The test method comprises the following steps: the test refers to pesticide bioassay technology (edited by Chengnin spring, published by Beijing university of agriculture, Press) and pesticide indoor bioassay test guideline NY/T1156.10-2008, and uses indoor potted plant assay for tomato gray mold. On the basis of a preparation test, 2 melon seedlings with the same true leaf period and growth vigor are selected, oil marker pens are used for writing label numbers, the melon seedlings are inserted into potted tomato seedling pots, and the melon seedlings are discharged in sequence. Spraying the pesticide on the leaves of the melon seedlings by adopting a leaf surface spraying method, drying the test material in the shade for 24 hours in a fume hood or a greenhouse after spraying treatment, and then inoculating. Performing wet culture in greenhouse for 7d to investigate the prevention and treatment effects, grading to execute national Standard of people's republic of China "test criteria for pesticide field efficacy (I)," calculating the prevention and treatment effects based on disease index, performing statistical analysis by DPS data processing software, and calculating EC of each agent50Then, the co-toxicity coefficient (CTC) was calculated by the Sun Yunpei method.
Measured virulence index (ATI) ═ standard agent EC50Reagent for test EC50)×100
Theoretical virulence index (TTI) ═ A agent virulence index x percent of A in the mixture + B agent virulence index x percent of B in the mixture
Co-toxicity coefficient (CTC) ═ measured toxicity index (ATI) of the mixture/Theoretical Toxicity Index (TTI) of the mixture x 100
When the CTC is less than or equal to 80, the composition shows antagonism, when the CTC is more than 80 and less than 120, the composition shows additive action, and when the CTC is more than or equal to 120, the composition shows synergistic action.
TABLE 1 indoor toxicity test results of compounding shenqinmycin and cyprodinil on tomato gray mold
| Treatment of | EC50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| Shenqinmycin | 19.20 | 100.00 | / | / |
| Cyprodinil | 6.89 | 278.66 | / | / |
| 50 parts of shenqinmycin and 1 part of cyprodinil | 15.21 | 126.23 | 103.50 | 121.96 |
| Shenqinmycin 20 cyprodinil 1 | 10.40 | 184.62 | 108.51 | 170.14 |
| Shenqinmycin 10 cyprodinil 1 | 9.56 | 200.84 | 116.24 | 172.77 |
| Shenqinmycin 5 cyprodinil 1 | 6.45 | 297.67 | 129.78 | 229.37 |
| Shenqinmycin 1: cyprodinil 1 | 5.11 | 375.73 | 189.33 | 198.45 |
| Shenqinmycin 1: cyprodinil 5 | 3.11 | 617.36 | 248.89 | 248.05 |
| Shenqinmycin 1: cyprodinil 10 | 2.85 | 673.68 | 262.42 | 256.72 |
| Shenqinmycin 1: cyprodinil 20 | 4.39 | 437.36 | 270.16 | 161.89 |
| Shenqinmycin 1: cyprodinil 50 | 5.33 | 360.23 | 275.16 | 130.91 |
The results in Table 1 show that the shenqinmycin and cyprodinil have synergistic effect on the gray mold of tomato at the ratio of 50:1-1:50, and particularly have the co-toxicity coefficient higher than 160 at the ratio of 20:1-1:20, so that the synergistic effect is more obvious.
Example 2: indoor toxicity determination of compounding of shenqinmycin and cyprodinil on wheat powdery mildew
Test subjects: wheat powdery mildew germ
The test method comprises the following steps: the test was conducted by potting. Sowing the wheat powdery mildew susceptible variety, performing pot culture until 2-4 true leaves are obtained, and numbering for later use. Using purified water with small amount of surface active substance to absorb fresh spores on wheat leaves full of powdery mildew to obtain spores with concentration of 1 × 105spores/mL of spore suspension are ready for use. On the basis of the preliminary test, 5-7 series of mass concentrations are set according to the activity of the medicament. The liquid medicine is evenly sprayed on the leaf surfaces until the leaf surfaces are completely wetted, and the liquid medicine is naturally dried for later use. Each treatment was repeated 4 times for 3 tubs and a blank was set for treatment containing only solvent and surfactant and no active ingredient. And (5) inoculating powdery mildew spores 24h after the medicine is applied. After culturing for 7 days in a greenhouse, counting the disease spot area on each wheat seedling leaf, and calculating the disease index and the prevention and treatment effect. MeterThe calculation and statistical analysis methods were the same as in bioassay example 1. The virulence determination results are shown in table 2.
TABLE 2 indoor toxicity test results of compounding of shenqinmycin and cyprodinil on wheat powdery mildew
| Treatment of | EC50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| Shenqinmycin | 15.30 | 100.00 | / | / |
| Cyprodinil | 3.88 | 394.33 | / | / |
| 50 parts of shenqinmycin and 1 part of cyprodinil | 11.23 | 136.24 | 105.77 | 128.81 |
| Shenqinmycin 20 cyprodinil 1 | 8.16 | 187.50 | 114.02 | 164.45 |
| Shenqinmycin 10 cyprodinil 1 | 7.11 | 215.19 | 126.76 | 169.77 |
| Shenqinmycin 5 cyprodinil 1 | 5.68 | 269.37 | 149.05 | 180.72 |
| Shenqinmycin 1: cyprodinil 1 | 3.28 | 466.46 | 247.16 | 188.73 |
| Shenqinmycin 1: cyprodinil 5 | 1.22 | 1254.10 | 345.27 | 363.22 |
| Shenqinmycin 1: cyprodinil 10 | 0.98 | 1561.22 | 367.57 | 424.74 |
| Shenqinmycin 1: cyprodinil 20 | 1.68 | 910.71 | 380.31 | 239.46 |
| Shenqinmycin 1: cyprodinil 50 | 2.69 | 568.77 | 388.56 | 146.38 |
The results in Table 2 show that the shenqinmycin and cyprodinil have synergistic effect on wheat powdery mildew when the ratio is 50:1-1:50, and particularly, the co-toxicity coefficient of the listed ratio is higher than 160 when the ratio is 20:1-1:20, so that the synergistic effect is more obvious.
Example 3 10.5% Thiamphenicol-cyprodinil suspension
The raw active ingredients, the dispersing agent, the wetting agent, the water and the like are uniformly mixed according to the proportion of the formula, and the mixture is ground and/or sheared at a high speed to obtain the 10.5 percent shenqinmycin-cyprodinil suspending agent.
The embodiment is applied to control of pepper gray mold. The suspension is diluted 1500 times (the effective concentration of the shenqinmycin is 66.67 mu g/ml and the effective concentration of the cyprodinil is 3.33 mu g/ml) by adding water into 10.5 percent of the shenqinmycin-cyprodinil suspension, and the control effects are respectively 92.4 percent and 98.2 percent after the suspension is applied for 7 days and 15 days. The 20% shenqinmycin suspending agent is 2000 times (the effective concentration is 100 mu g/ml) and the 50% cyprodinil water dispersible granule is 1000 times (the effective concentration is 500 mu g/ml), the same method is used, the control effect is 76.3% and 86.5% respectively after the drug is applied for 7 days, and the control effect is 60.3% and 78.1% after the drug is applied for 15 days. The compounding of the shenqinmycin and the cyprodinil has obvious synergistic effect, the control effect on the gray mold of the hot pepper is obviously better than that of a single agent, the control effect is improved, the dosage of the effective components is obviously reduced compared with that of the effective components used alone, and the pollution to the environment is also reduced.
Example 4: suspension emulsion containing 48% shenqinmycin and cyprodinil
The preparation method comprises the steps of uniformly mixing the cyprodinil, the dispersing agent, the wetting agent, water and the like according to the proportion of a formula, grinding and/or shearing at a high speed to obtain a suspending agent, and then directly emulsifying the shenqinmycin, the emulsifying agent and various auxiliaries into the suspending agent by using a high-speed stirrer to obtain the 48% shenqinmycin-cyprodinil suspoemulsion.
The embodiment is applied to controlling cucumber powdery mildew. The 48% shenqinmycin-cyprodinil suspoemulsion is diluted and sprayed by 3000 times (the effective concentration of shenqinmycin is 133.3 mug/ml, and the effective concentration of cyprodinil is 26.67 mug/ml) with water, and the control effect is 96.1% and 95.3% respectively after the application for 7 days and 15 days. The 15% shenqinmycin suspending agent and the 50% cyprodinil water dispersible granule are 1000 times (the effective concentration is 150 mu g/ml) and used by the same method, the control effect is 86.2% and 78.8% respectively after the medicine is applied for 7 days, and the control effect is 78.2% and 68.3% after the medicine is applied for 15 days. After the shenqinmycin and the cyprodinil are compounded, the synergistic effect is obvious, the control effect on the powdery mildew of cucumber is obviously better than that of a single agent, the control effect is improved, the using amount of the effective components is obviously reduced compared with that of the effective components when the shenqinmycin and the cyprodinil are used alone, and the pollution to the environment is also reduced.
Example 5: 55% shenqinmycin-cyprodinil water dispersible granule
The active ingredients, the dispersing agent, the wetting agent, the disintegrating agent and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, and a certain amount of water is added for mixing and extrusion molding. And drying and screening to obtain 55% of shenqinmycin-cyprodinil water dispersible granules.
The embodiment is applied to preventing and controlling the gray mold of the strawberry. The 55% shenqinmycin-cyprodinil suspoemulsion is diluted by adding water according to 3000 times (the effective concentration of the shenqinmycin is 16.67 mu g/ml, and the effective concentration of the cyprodinil is 166.67 mu g/ml) for spraying, and the control effects of the suspension for 7 days and 15 days after the spraying are respectively 89.2% and 97.5%. The 15% shenqinmycin suspending agent is used by the same method according to 1500 times (the effective concentration is 100 mu g/ml) and the 50% cyprodinil water dispersible granule is 1000 times (the effective concentration is 500 mu g/ml), the control effect is 76.2% and 76.9% respectively after the medicine is applied for 7 days, and the control effect is 65.2% and 70.1% after the medicine is applied for 15 days. After the shenqinmycin and the cyprodinil are compounded, the synergistic effect is obvious, the control effect on the gray mold of the strawberry is obviously better than that of a single agent, the control effect is improved, the using amount of the effective components is obviously reduced compared with that when the shenqinmycin and the cyprodinil are used alone, and the pollution to the environment is also reduced.
Example 6: 50% shenqinmycin-cyprodinil wettable powder
The active ingredients, various auxiliary agents, fillers and the like are fully mixed according to the proportion of the formula and are crushed by a superfine crusher to obtain 50 percent of shenqinmycin-cyprodinil wettable powder.
The embodiment is applied to the prevention and treatment of grape gray mold. The 50% shenqinmycin-cyprodinil suspoemulsion is diluted and sprayed by 2500 times of water (the effective concentration of the shenqinmycin is 100 mug/ml, and the effective concentration of the cyprodinil is 100 mug/ml), and the control effects of the suspension for 7 days and 15 days after the suspension is sprayed are 98.1% and 98.0% respectively. The 20% shenqinmycin suspending agent is 1500 times (the effective concentration is 133.33 mu g/ml) and the 50% cyprodinil water dispersible granule is 1000 times (the effective concentration is 500 mu g/ml), the same method is used, the control effect is 71.2% and 87.2% respectively after the medicine is applied for 7 days, and the control effect is 60.2% and 71.1% after the medicine is applied for 15 days. After the shenqinmycin and the cyprodinil are compounded, the synergistic effect is obvious, the control effect on the grape gray mold is obviously better than that of a single agent, the control effect is improved, the dosage of the effective components is obviously reduced compared with that when the shenqinmycin and the cyprodinil are used independently, and the pollution to the environment is also reduced.
Example 7: 30.6% wettable powder of shenqinmycin-cyprodinil
The active ingredients, various auxiliary agents, fillers and the like are fully mixed according to the proportion of the formula and are crushed by a superfine crusher to obtain 30.6 percent of shenqinmycin-cyprodinil wettable powder.
The embodiment is applied to controlling apple powdery mildew. The 30.6% shenqinmycin-cyprodinil suspoemulsion is diluted and sprayed by 2500 times of water (the effective concentration of the shenqinmycin is 100 mug/ml, and the effective concentration of the cyprodinil is 100 mug/ml), and the control effects of the suspension for 7 days and 15 days after the suspension is sprayed are 98.9% and 99.1% respectively. The 20% shenqinmycin suspending agent is 1500 times (the effective concentration is 133.33 mu g/ml) and the 50% cyprodinil water dispersible granule is 1000 times (the effective concentration is 500 mu g/ml), the same method is used, the control effect is 81.8% and 89.1% respectively after the medicine is applied for 7 days, and the control effect is 71.1% and 79.8% after the medicine is applied for 15 days. After the shenqinmycin and the cyprodinil are compounded, the synergistic effect is obvious, the control effect on apple powdery mildew is obviously better than that of a single agent, the control effect is improved, the dosage of the effective components is obviously reduced compared with that when the shenqinmycin and the cyprodinil are used independently, and the pollution to the environment is also reduced.
Example 8: 52.5% shenqinmycin-cyprodinil suspoemulsion
The preparation method comprises the steps of uniformly mixing the cyprodinil, the dispersing agent, the wetting agent, water and the like according to the proportion of a formula, grinding and/or shearing at a high speed to obtain a suspending agent, and then directly emulsifying the shenqinmycin, the emulsifying agent and various auxiliaries into the suspending agent by using a high-speed stirrer to obtain the 52.5% shenqinmycin-cyprodinil suspoemulsion.
The embodiment is applied to controlling powdery mildew of eggplants. The 52.5 percent shenqinmycin-cyprodinil suspoemulsion is diluted and sprayed by 2500 times of water (the effective concentration of the shenqinmycin is 10 mu g/ml, and the effective concentration of the cyprodinil is 200 mu g/ml), and the control effects of the suspension for 7 days and 15 days after the suspension is sprayed are 90.4 percent and 95.9 percent respectively. The 15% shenqinmycin suspending agent is 1500 times (the effective concentration is 100 mu g/ml) and the 50% cyprodinil water dispersible granule is 1000 times (the effective concentration is 500 mu g/ml), the same method is used, the control effect is 76.1 and 71.2% respectively after the medicine is applied for 7 days, and 66.1% and 61.2% after the medicine is applied for 15 days. After the shenqinmycin and the cyprodinil are compounded, the synergistic effect is obvious, the control effect on the powdery mildew of the eggplant is obviously better than that of a single agent, the control effect is improved, the using amount of the effective components is obviously reduced compared with that of the effective components when the shenqinmycin and the cyprodinil are used alone, and the pollution to the environment is also reduced.
Example 9: 76.5% shenqinmycin-cyprodinil suspending agent
The active ingredient raw drug, the dispersant, the wetting agent, the water and the like are uniformly mixed according to the proportion of the formula, and the 76.5 percent shenqinmycin-cyprodinil suspending agent is obtained after grinding and/or high-speed shearing.
The embodiment is applied to prevention and treatment of lettuce gray mold. 76.5 percent of shenqinmycin-cyprodinil suspending agent is diluted and sprayed by 2500 times of water (the effective concentration of shenqinmycin is 6 mug/ml, the effective concentration of cyprodinil is 300 mug/ml), and the control effect is 98.1 percent and 98.1 percent respectively after 7 days and 15 days of application. The same method is used for 2000 times of 20% shenqinmycin suspending agent (effective concentration is 100 mu g/ml) and 1500 times of 50% cyprodinil water dispersible granules (effective concentration is 333.33 mu g/ml), the control effect is respectively 78.1% and 85.7% after the preparation for 7 days, and the control effect is 67.5% and 78.3% after the preparation for 15 days. The compounding of the shenqinmycin and the cyprodinil has obvious synergistic effect, the prevention effect on the lettuce gray mold is obviously better than that of a single agent, the prevention and treatment effect is improved, the dosage of the effective components is obviously reduced compared with that of the effective components used alone, and the pollution to the environment is also reduced.
Example 10: 54% shenqinmycin-cyprodinil water dispersible granule
The active ingredients, the dispersing agent, the wetting agent, the disintegrating agent and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, and a certain amount of water is added for mixing and extrusion molding. And drying and screening to obtain 54% of shenqinmycin-cyprodinil water dispersible granules.
The embodiment is applied to preventing and controlling the gray mold of the cherry. The 54% shenqinmycin-cyprodinil water dispersible granule is diluted and sprayed by 2000 times (the effective concentration of shenqinmycin is 45 mug/ml, and the effective concentration of cyprodinil is 225 mug/ml) of water, and the control effect is 93.2% and 98.8% respectively after the preparation for 7 days and 15 days. The 15% shenqinmycin suspending agent and the 50% cyprodinil water dispersible granule are respectively used according to 1500 times (the effective concentration is 100 mu g/ml) and 1500 times (the effective concentration is 333.33 mu g/ml) by the same method, the control effect is 76.2% and 87.9% respectively after the medicine is taken for 7 days, and 66.5% and 77.9% after the medicine is taken for 15 days. The compounding of the shenqinmycin and the cyprodinil has obvious synergistic effect, the control effect on the cherry gray mold is obviously better than that of a single agent, the control effect is improved, the dosage of the effective components is obviously reduced compared with that of the effective components used alone, and the pollution to the environment is also reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A pesticide sterilization composition is characterized by comprising shenqinmycin and cyprodinil.
2. The bactericidal composition according to claim 1, wherein the mass ratio of the shenqinmycin to the cyprodinil is 50:1-1: 50.
3. The bactericidal composition according to claim 2, wherein the mass ratio of the shenqinmycin to the cyprodinil is 20:1-1: 20.
4. The bactericidal composition according to claim 3, wherein the mass ratio of the shenqinmycin to the cyprodinil is 5: 1-1: 5.
5. The use of the fungicidal composition of any of claims 1 to 4 for the control of fungal diseases in crops and for the preparation of pesticidal formulations for the control of fungal diseases in crops.
6. The use according to claim 5, wherein the crop fungal disease is a crop botrytis cinerea disease or powdery mildew disease.
7. A pesticidal formulation for controlling crop diseases, comprising the fungicidal composition of any one of claims 1 to 4 and a pesticidally acceptable adjuvant.
8. The pesticide preparation of claim 7, wherein the bactericidal composition accounts for 5-80% of the total weight of the pesticide preparation.
9. The agricultural chemical preparation of claim 7, wherein the adjuvant is one or more selected from the group consisting of a dispersant, a wetting agent, an emulsifier, a spreader, a stabilizer, a thickener, an antifreeze, a disintegrant, a binder, an antifoaming agent, a film-forming agent, a colorant, a filler and a solvent.
10. The pesticide preparation as claimed in claim 7, wherein the pesticide preparation is in the form of wettable powder, suspending agent, suspoemulsion or water dispersible granule.
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Application publication date: 20191231 |