CN110946146A - Synergistic nematicidal composition containing trifloxystrobin and fosthiazate - Google Patents
Synergistic nematicidal composition containing trifloxystrobin and fosthiazate Download PDFInfo
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- CN110946146A CN110946146A CN201911024416.6A CN201911024416A CN110946146A CN 110946146 A CN110946146 A CN 110946146A CN 201911024416 A CN201911024416 A CN 201911024416A CN 110946146 A CN110946146 A CN 110946146A
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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
- A01N57/26—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-nitrogen bonds
- A01N57/32—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-nitrogen bonds containing heterocyclic radicals
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
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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
- A01N43/06—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 five-membered rings
- A01N43/08—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 five-membered rings with oxygen as the ring hetero atom
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- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
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Abstract
The invention discloses a synergistic nematicidal composition containing trifloxystrobin and fosthiazate, belonging to the technical field of pesticides, wherein the active ingredients comprise trifloxystrobin and fosthiazate, the mass ratio of the trifloxystrobin to the fosthiazate is 40:1-1:40, and the synergistic agent β -sitosterol ester is also included.
Description
Technical Field
The invention relates to the technical field of pesticides, in particular to a nematicidal composition which is used for preventing and treating plant nematodes.
Background
Plant parasitic nematodes are pathogenic microorganisms with great harm, can be parasitic in roots, stems, leaves, seeds, buds and fruits of plants, not only directly harm host plants, but also can spread bacteria and viruses to cause compound diseases. Plant parasitic nematodes are difficult to control in crop production, chemical control plays an important role in the control process of nematodes, and most of the used chemical nematicides have serious environmental pollution, insignificant control effect, easy generation of drug resistance of nematodes and other problems. The development of the new compound is the most effective means for solving the resistance problem in the field of pesticides, but the research and development period of the new compound is long, and the cost is huge, so that the development and research of the efficient compound composition are more feasible.
The fosthiazate is a novel, high-efficiency, low-toxicity, broad-spectrum and safe non-fumigation organophosphorus insecticide and nematicide. Researches show that the fosthiazate has a systemic conduction effect in plants, has broad-spectrum activity on plant parasitic nematodes and pests, and is suitable for soil surface application.
The trifloxystrobin has good effect of killing nematodes, has strong lethal effect on 2-instar larvae, and also has obvious inhibiting effect on hatching nematode oocysts. How to mix the two components to overcome the problems of environmental pollution and drug resistance is the main direction of research of the application.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a synergistic nematicidal composition containing trifloxystrobin and fosthiazate, which is beneficial to overcoming and delaying the generation of drug resistance of nematodes and has a remarkable synergistic effect on the toxicity of the nematodes.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the synergistic nematicidal composition containing trifloxystrobin and fosthiazate comprises the active ingredients of trifloxystrobin and fosthiazate in a mass ratio of 40:1-1:40, and further comprises a synergist β -sitosterol ester.
The technical scheme of the invention is further improved as follows: the mass ratio of the trifloxystrobin to the fosthiazate is 20:1-1: 10.
The technical scheme of the invention is further improved as follows: the percentage of the trifloxystrobin and the fosthiazate is 2-65% of the total mass of the composition.
The technical proposal of the invention is further improved in that the proportion of the synergist β -sitosterol ester is 0.5-5 percent of the total mass of the composition.
The technical scheme of the invention is further improved in that the bactericide comprises trifloxystrobin, fosthiazate, β -sitosterol ester, alkylphenol formaldehyde resin polyoxyethylene ether, alkylphenol polyoxyethylene ether phosphate, magnesium aluminum silicate, xanthan gum, organic silicon and deionized water.
The technical scheme of the invention is further improved by comprising trifloxystrobin, fosthiazate, β -sitosterol ester, nonylphenol polyoxyethylene ether phosphate, triphenyl ethylphenol polyoxyethylene ether phosphate, xylene, cyclohexanone and deionized water.
The technical scheme of the invention is further improved by comprising trifloxystrobin, fosthiazate, β -sitosterol ester, polyvinylpyrrolidone, sodium lauryl sulfate and silica sand.
The technical scheme of the invention is further improved by comprising trifloxystrobin, fosthiazate, β -sitosterol ester, DMF, cyclohexanone, alkylphenol polyoxyethylene, phenethyl phenol polyoxyethylene ether phosphate, glycol and water.
The technical scheme of the invention is further improved by comprising trifloxystrobin, fosthiazate, β -sitosterol ester, sodium dodecyl sulfate, polycarboxylate, corn starch and diatomite.
The technical scheme of the invention is further improved as follows: the formulation of the composition is any one of a suspended seed coating agent, an aqueous emulsion, a microemulsion, missible oil, wettable powder, water dispersible granules and granules.
Due to the adoption of the technical scheme, the invention has the technical progress that:
1. the trifloxystrobin and fosthiazate have different action mechanisms, the action sites are increased, the single selection pressure on the nematodes is reduced, the generation of drug resistance of the nematodes is favorably overcome and delayed, and the insecticidal spectrum is widened;
2. the trifloxystrobin and the fosthiazate are compounded, after the synergist β -sitosterol ester is added, the toxicity synergistic effect on the nematodes is remarkable, the application amount of each single agent can be reduced, the application frequency and the application amount are reduced, and the pesticide cost is reduced;
3. after the trifloxystrobin and the fosthiazate are compounded, and the synergist β -sitosterol ester is added, the lasting period is prolonged, the environmental pollution and the pesticide residue are effectively reduced, and the harm to beneficial organisms is reduced;
4. by compounding and synergism, the dosage of the active ingredients of the fosthiazate is reduced, the risk of phytotoxicity is reduced, and the composition is safer for crops.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
a synergistic nematicidal composition containing trifloxystrobin and fosthiazate comprises the active ingredients of trifloxystrobin and fosthiazate, and also comprises a synergist β -sitosterol ester.
The mass ratio of the trifloxystrobin to the fosthiazate is 40:1-1:40, wherein the ratio of the trifloxystrobin to the fosthiazate is 2-65% of the total mass of the composition, and the ratio of the synergist β -sitosterol ester is 0.5-5% of the total mass of the composition.
The formulation of the composition is any one of a suspended seed coating agent, an aqueous emulsion, a microemulsion, missible oil, wettable powder, water dispersible granules and granules.
The application of the synergistic nematicidal composition containing trifloxystrobin and fosthiazate is mainly used for preventing and controlling plant nematodes.
The technical scheme and the technical effect of the invention are further explained by combining an indoor combined toxicity determination test and a field efficacy test after the compounding of the trifloxystrobin and the fosthiazate, wherein the percentages are weight percentages.
First, bioassay example
Combined toxicity determination test of trifloxystrobin and fosthiazate compound on cayenne root-knot nematode
Test subjects: cayenne root knot nematode
The test method comprises the following steps: putting a certain volume of the second-instar larva suspension into a culture dish (diameter is 6cm), adding a test agent with an equal volume series of concentrations, and taking the final concentration of the test agent as the set concentration of the test, repeating the treatment for 4 times, and taking clear water as a blank control. Culturing at 25 deg.C for 36h, examining activity of nematode, and calculating relative lethality of each agent treatment to second-instar larva of nematode. Dead nematodes are usually stiff and bent into bow or spiral, live nematodes are mostly bent or twisted, if the dead nematodes are difficult to live, the nematodes to be identified can be placed in a 2% sodium chloride solution, and observed after 2min, so that the dead nematodes, the live nematodes and the live nematodes are curled or twisted.
The joint mode of action was determined using the co-toxicity coefficient (CTC) method. The co-toxicity coefficient is calculated as follows:
measured virulence index (ATI) ═ standard medicament LC 50/test medicament LC50 × 100
Theoretical virulence index (TTI) ═ A agent ATI × percentage of A in the mixture + B agent ATI × percentage 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.
And (3) test results: the combined toxicity measurement results of the trifloxystrobin and fosthiazate after compounding on the cayenne root-knot nematode are shown in table 1.
TABLE 1 Combined virulence determination of trifloxystrobin and fosthiazate combinations on cayenne root-knot nematodes
As can be seen from the table 1, when the trifloxystrobin and the fosthiazate are compounded, the trifloxystrobin and the fosthiazate have synergistic effect within the range of the ratio of 40:1 to 1:40, the co-toxicity coefficients are both greater than 120, and particularly within the range of 20:1 to 1:10, the synergistic effect is obvious.
Second, preparation examples
Example 1: 25.0% trifloxystrobin and fosthiazate suspension
Weighing 20.0% of trifloxystrobin, 5.0% of fosthiazate, 2.5% of alkylphenol formaldehyde resin polyoxyethylene ether, 2.5% of alkylphenol polyoxyethylene ether phosphate, 1.5% of magnesium aluminum silicate, 0.5% of xanthan gum, 0.3% of organic silicon and deionized water to complement to 100%.
The suspending agent containing trifloxystrobin and fosthiazate is obtained by uniformly mixing the components according to the proportion of the formula, grinding and shearing at a high speed.
Example 2: aqueous emulsion of 19% trifloxystrobin and fosthiazate
Weighing 18.0% of trifloxystrobin, 1.0% of fosthiazate, 2.5% of nonylphenol polyoxyethylene ether phosphate, 2.0% of triphenylethylphenol polyoxyethylene ether phosphate, 12% of xylene, 3% of cyclohexanone and deionized water to complement to 100%.
The components are uniformly mixed according to the proportion of the formula, and the trifloxystrobin and fosthiazate aqueous emulsion is prepared by high-speed stirring of a reaction kettle and high-speed shearing of a shearing machine.
Example 3: 65% trifloxystrobin and fosthiazate granules
Weighing 20.0% of trifloxystrobin, 45.0% of fosthiazate, 14.0% of polyvinylpyrrolidone, 11.0% of sodium lauryl sulfate and silica sand to complement to 100.0%.
The components are uniformly mixed according to the proportion of the formula, crushed by a coarse crusher, added with a certain amount of water for kneading, granulated in a granulator and dried to obtain the granular product.
Example 4: microemulsion of 2% trifloxystrobin and fosthiazate
Weighing 1.0% of trifloxystrobin, 1.0% of fosthiazate, 5.0% of DMF (dimethyl formamide), 15.0% of cyclohexanone, 10.0% of alkylphenol polyoxyethylene, 5.0% of phenethyl phenol polyoxyethylene ether phosphate, 4.0% of ethylene glycol and water for complementing to 100%.
Adding active ingredients, a solvent, a cosolvent and an emulsifier together to dissolve into a uniform oil phase; adding water soluble substance into water, dissolving to obtain uniform water phase, and mixing oil phase and water phase under stirring to obtain microemulsion.
Example 5: 32% trifloxystrobin and fosthiazate water dispersible granule
Weighing 16.0% of trifloxystrobin, 16.0% of fosthiazate, 3.0% of sodium dodecyl sulfate, 7.0% of polycarboxylate, 18.0% of corn starch and diatomite to complement to 100%.
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 the water dispersible granule.
Third, comparative example
Comparative example 1: 25.0% trifloxystrobin and fosthiazate suspension
Weighing 20.0% of trifloxystrobin, 5.0% of fosthiazate, 0.5% of β -sitosterol ester, 2.5% of alkylphenol formaldehyde resin polyoxyethylene ether, 2.5% of alkylphenol polyoxyethylene ether phosphate, 1.5% of magnesium aluminum silicate, 0.5% of xanthan gum, 0.3% of organic silicon and deionized water for complementing to 100%.
The suspending agent containing trifloxystrobin and fosthiazate is obtained by uniformly mixing the components according to the proportion of the formula, grinding and shearing at a high speed.
Comparative example 2: aqueous emulsion of 19% trifloxystrobin and fosthiazate
Weighing 18.0% of trifloxystrobin, 1.0% of fosthiazate, 0.5% of β -sitosterol ester, 2.5% of nonylphenol polyoxyethylene ether phosphate, 2.0% of triphenylethylphenol polyoxyethylene ether phosphate, 12% of xylene, 3.0% of cyclohexanone and deionized water to make up to 100%.
The components are uniformly mixed according to the proportion of the formula, and the trifloxystrobin and fosthiazate aqueous emulsion is prepared by high-speed stirring of a reaction kettle and high-speed shearing of a shearing machine.
Comparative example 3: 65% trifloxystrobin and fosthiazate granules
Weighing 20.0% of trifloxystrobin, 45.0% of fosthiazate, 0.5% of β -sitosterol ester, 14.0% of polyvinylpyrrolidone, 11.0% of sodium lauryl sulfate and silica sand to make up to 100.0%.
The components are uniformly mixed according to the proportion of the formula, crushed by a coarse crusher, added with a certain amount of water for kneading, granulated in a granulator and dried to obtain the granular product.
Comparative example 4: microemulsion of 2% trifloxystrobin and fosthiazate
Weighing 1.0% of trifloxystrobin, 1.0% of fosthiazate, 5% of β -sitosterol ester, 5.0% of DMF, 15.0% of cyclohexanone, 10.0% of alkylphenol polyoxyethylene, 5.0% of phenethyl phenol polyoxyethylene ether phosphate, 4.0% of ethylene glycol and water to complement to 100%.
Adding active ingredients, a synergist, a solvent, a cosolvent and an emulsifier together to dissolve the active ingredients into a uniform oil phase; adding water soluble substance into water, dissolving to obtain uniform water phase, and mixing oil phase and water phase under stirring to obtain microemulsion.
Comparative example 5: 32% trifloxystrobin and fosthiazate water dispersible granule
Weighing 16.0% of trifloxystrobin, 16.0% of fosthiazate, 0.5% of β -sitosterol ester, 3.0% of sodium dodecyl sulfate, 7.0% of polycarboxylate, 18.0% of corn starch and diatomite to make up to 100%.
The active ingredients, the synergist, the dispersant, the wetting agent, the disintegrant 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 to prepare the material. And drying and screening to obtain the water dispersible granule.
Four, field drug effect
Test example 1: control effect on cucumber knot nematode
The test is carried out in Zhao county, Hebei province in 4 months in 2019, the root spraying method is adopted in the test, the selected cucumbers basically grow consistently, are in vegetative growth period, and have serious nematodes in the past year, and the damage condition of the cucumber roots is checked at 30.d and 60.d after the application of the pesticide. As can be seen from the data in Table 2, the synergistic effect of various formulations is obvious after the trifloxystrobin and the fosthiazate are compounded; the control effect of each compound medicament on the nematodes is obviously better than that of a single medicament 30.d and 60.d after the medicament is applied.
TABLE 2 Compound of trifloxystrobin and fosthiazate for controlling cucumber root-knot nematode in field
Test example 2: prevention and treatment effect on soybean cyst nematode
The test is carried out in 5 months in 2019 in Shijiazhuang Ganchuan, a backpack sprayer is adopted for root spraying in the test, the selected soybeans in the test field are just in the seedling stage, the plants grow basically consistently, the nematodes grow heavier in the past year, and the damage condition of the roots of the soybeans is checked 30.d and 60.d after the pesticide is applied. As can be seen from the data in Table 3, the synergistic effect of various formulations is obvious after the trifloxystrobin and the fosthiazate are compounded; 30.d and 60.d after the application, the control effect of each compound medicament on the soybean cyst nematodes is also obviously better than that of a single medicament.
TABLE 3 field control Effect of trifloxystrobin and fosthiazate on Soybean cyst nematode
According to the field control effect of the trifloxystrobin and fosthiazate on the root-knot nematodes of cucumbers and cyst nematodes of soybeans, the control effect of each compound medicament is obviously better than that of a single medicament, and the effect of adding β -sitosterol ester serving as a synergist into a compound preparation is better, so that the composition has a synergistic effect, is prolonged in duration, can reduce the dosage and the application frequency, delays the generation of drug resistance of harmful nematodes, and can reduce the control cost.
Meanwhile, triethanolamine can be added into the composition, specifically, 20.0% of trifloxystrobin, 5.0% of fosthiazate, β -sitosterol ester, 2.5% of alkylphenol formaldehyde resin polyoxyethylene ether, 2.5% of alkylphenol polyoxyethylene ether phosphate, 1.5% of magnesium aluminum silicate, 0.5% of xanthan gum, 0.3% of organic silicon, 5.0% of triethanolamine and the balance of deionized water to 100% can be weighed according to the amount, so that the degradation speed of residual pesticide is accelerated by adding the triethanolamine, and the environmental protection performance is greatly improved.
The suspending agent containing trifloxystrobin and fosthiazate is obtained by uniformly mixing the components according to the proportion of the formula, grinding and shearing at a high speed.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The synergistic nematicidal composition containing trifloxystrobin and fosthiazate is characterized in that the effective components comprise trifloxystrobin and fosthiazate, the mass ratio of the trifloxystrobin to the fosthiazate is 40:1-1:40, and the synergistic agent β -sitosterol ester is also included.
2. The synergistic nematicidal composition comprising trifloxystrobin and fosthiazate according to claim 1, wherein: the mass ratio of the trifloxystrobin to the fosthiazate is 20:1-1: 10.
3. The synergistic nematicidal composition comprising trifloxystrobin and fosthiazate according to claim 1, wherein: the percentage of the trifloxystrobin and the fosthiazate is 2-65% of the total mass of the composition.
4. The synergistic nematicidal composition containing the trifloxystrobin and the fosthiazate according to claim 3, characterized in that the synergist β -sitosterol ester accounts for 0.5-5% of the total weight of the composition.
5. The synergistic nematicidal composition comprising trifloxystrobin and fosthiazate according to claim 4 comprising trifloxystrobin, fosthiazate, β -sitosterol ester, alkylphenol formaldehyde resin polyoxyethylene ether, alkylphenol polyoxyethylene ether phosphate, magnesium aluminum silicate, xanthan gum, silicone, deionized water.
6. The synergistic nematicidal composition comprising trifloxystrobin and fosthiazate according to claim 4, comprising trifloxystrobin, fosthiazate, β -sitosterol ester, polyoxyethylene nonylphenol phosphate, polyoxyethylene triphenylethylphenol phosphate, xylene, cyclohexanone, deionized water.
7. The synergistic nematicidal composition comprising nematicidal triflate and fosthiazate according to claim 4 comprising nematicidal triflate, fosthiazate, β -sitosterol ester, polyvinylpyrrolidone, sodium laurate sulphate and silica sand.
8. The synergistic nematicidal composition comprising trifloxystrobin and fosthiazate according to claim 4, comprising trifloxystrobin, fosthiazate, β -sitosterol ester, DMF, cyclohexanone, alkylphenol ethoxylates, phenethylphenol polyoxyethylene ether phosphate, ethylene glycol, water.
9. The synergistic nematicidal composition of claim 4 comprising nematicidal triflate and fosthiazate comprising nematicidal triflate, fosthiazate, β -sitosterol ester, sodium dodecylsulphonate, polycarboxylate, corn starch, diatomaceous earth.
10. The synergistic nematicidal composition comprising trifloxystrobin and fosthiazate according to claim 1, wherein: the formulation of the composition is any one of a suspended seed coating agent, an aqueous emulsion, a microemulsion, missible oil, wettable powder, water dispersible granules and granules.
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| CN1869047A (en) * | 2006-06-28 | 2006-11-29 | 浙江理工大学 | Application of beta sitosterin-3-0 beta D-glucoside-6'-0-eicosanoate as insecticide |
| CN103931666A (en) * | 2014-04-03 | 2014-07-23 | 福建省农业科学院植物保护研究所 | Insecticide synergist |
| CN106342882A (en) * | 2016-08-25 | 2017-01-25 | 山东省联合农药工业有限公司 | Nematicidal composition and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869047A (en) * | 2006-06-28 | 2006-11-29 | 浙江理工大学 | Application of beta sitosterin-3-0 beta D-glucoside-6'-0-eicosanoate as insecticide |
| CN103931666A (en) * | 2014-04-03 | 2014-07-23 | 福建省农业科学院植物保护研究所 | Insecticide synergist |
| CN106342882A (en) * | 2016-08-25 | 2017-01-25 | 山东省联合农药工业有限公司 | Nematicidal composition and application thereof |
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