CN115211429A - Insecticidal composition with high control effect and high safety and application thereof - Google Patents
Insecticidal composition with high control effect and high safety and application thereof Download PDFInfo
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- CN115211429A CN115211429A CN202111111882.5A CN202111111882A CN115211429A CN 115211429 A CN115211429 A CN 115211429A CN 202111111882 A CN202111111882 A CN 202111111882A CN 115211429 A CN115211429 A CN 115211429A
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- insecticidal composition
- dinotefuran
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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
- A01N43/58—1,2-Diazines; Hydrogenated 1,2-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
- 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
- A01N25/02—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 liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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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
- A01N25/24—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 to enhance the sticking of 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
- 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
- A01N37/06—Unsaturated carboxylic acids or thio analogues thereof; Derivatives thereof
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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
- 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
- A01N37/10—Aromatic or araliphatic carboxylic acids, or thio analogues thereof; Derivatives thereof
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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
- 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
- A01N37/36—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 singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
- A01N37/38—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 singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
- A01N37/40—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 singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system
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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
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
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Abstract
The invention relates to the field of IPC A01N51/00, in particular to an insecticidal composition with high control effect and strong safety and application thereof, wherein the raw materials comprise pyridaben and dinotefuran; the weight ratio of the pyridaben to the dinotefuran (0.5-2): 1; the weight sum of the pyridaben and the dinotefuran accounts for 10-35wt% of the total weight of the insecticidal composition. The invention effectively improves the protection effect of the insecticidal composition on cruciferous crops, the obtained insecticidal composition has extremely strong killing effect on striped flea beetles, and the leaf protection effect is as high as more than 90%; meanwhile, the adhesive capacity of the insecticidal composition on the surfaces of cabbage leaves is improved, so that the insecticidal composition can still keep a high insect pest killing effect in a humid area; furthermore, the selection of raw materials such as rheological additives is controlled, the uniform dispersion of the suspending agent is promoted, the stability of the insecticidal composition is improved, and the suspending agent has higher suspension rate.
Description
Technical Field
The invention relates to the field of IPC A01N51/00, in particular to a pesticidal composition with high control effect and strong safety and application thereof.
Background
The flea beetles are main insect pests which harm cruciferous crops, and on one hand, the leaves are bitten into fine holes to influence the photosynthesis of the plants, so that vegetable seedlings are withered; meanwhile, the tender pods of the seeds are damaged, and the seed reservation of crops is influenced; meanwhile, the larvae in the soil damage crop roots and cut off root hairs, so that the plant beads wither and die in a large range. The insect pest not only directly harms the plant tissues of crops, but also easily spreads bacterial diseases, and causes great harm to agricultural production.
Chinese patent CN201110165052.0 discloses an insecticidal composition containing dinotefuran, dinotefuran and pyridaben in a mass ratio of 5: 15 are adopted to act on aphids to achieve the effect of preventing and treating insect pests of vegetables and fruits; the prior art has higher safety, but does not solve the problem of the harm of the striped flea beetles to crops.
Chinese patent CN201510383212.7 discloses a pesticide composition for controlling striped flea beetles, dinotefuran and pyridaben in a mass ratio of 1: 3 are adopted to control striped flea beetles; the prior art adopts effective components to be applied to various formulations, and has better prevention effect on the striped flea beetles. However, the environmental conditions of the technology are regions with mild climate, and for southern regions with raininess and humidity, the effective ingredients in the proportion have poor control effect on the flea beetles; and after the dosage of the reagent is increased, the damage effect on crops is stronger, and the leaf protection effect is poor.
Disclosure of Invention
The invention provides the insecticidal composition with high control effect and high safety, solves the problem that the control effect and the leaf protecting effect of the insecticidal composition on the flea beetles in the prior art are difficult to be considered at the same time, and realizes the insecticidal composition with high control effect, good leaf protecting effect and high stability.
In order to solve the problems, the invention provides an insecticidal composition with high control effect and high safety in a first aspect, and raw materials of the insecticidal composition comprise pyridaben and dinotefuran; the weight ratio of the pyridaben to the dinotefuran (0.5-2) is as follows: 1;
in some preferred embodiments, the sum of the weights of the pyridaben and the dinotefuran is 10-35wt% of the total weight of the pesticidal composition.
In some preferred embodiments, the weight ratio of pyridaben to dinotefuran is 1:1.
the pyridaben and dinotefuran compound has obvious killing effect on coleoptera diabrotifer pests, and the invention finds that when the weight ratio of the pyridaben to the dinotefuran is (0.5-2): 1, the insecticidal composition can effectively act on the nerve center of coleoptera insects, has a paralytic effect on pests, and further fully exerts systemic osmotic activity and kills insects in a broad spectrum. However, in hot and humid areas with raininess and cloudy fog, the binding force between the insecticidal composition and crops is difficult to maintain, and the insecticidal effect is low. Through a great deal of research, the invention discovers that in a specific suspending agent system, the weight ratio of 1: the pyridaben and the dinotefuran can further improve the insecticidal effect of the insecticidal composition, the insecticidal composition can still well act on the surfaces of crops (especially cruciferae) in hot regions, and the insecticidal effect is improved to over 90%. Further research shows that when the weight sum of the pyridaben and the dinotefuran accounts for 10-35wt% of the total weight of the insecticidal composition, the insecticidal composition has strong safety, nutrient delivery of crops is not obviously affected, and the leaf protecting effect is improved.
The invention provides an application of the insecticidal composition with high control effect and strong safety, and the insecticidal composition is applied to one of suspending agents, water dispersible granules, wettable powder and aqueous emulsion.
In some preferred embodiments, the raw materials of the insecticidal composition further comprise, by weight, 1-10% of a dispersing agent, 0.5-5% of a suspension aid, 0.1-0.5% of a rheological aid, 1-10% of a small molecular alcohol, and the balance of a solvent supplement.
In some preferred embodiments, the raw materials of the insecticidal composition further comprise 0.1-0.5wt% of bacteriostatic agent and 0.1-1wt% of antifoaming agent.
In some preferred embodiments, the dispersant comprises a combination of one or more of polyoxyethylene ether sulfate, small molecule alkylene oxide block copolymer, polycarboxylate, lignosulfonate, polyacrylate, succinate sulfonate, phenol ether phosphate.
Further preferably, the dispersant comprises polyoxyethylene ether sulfate, small-molecule alkylene oxide block copolymer, polycarboxylate; still more preferably, the polyoxyethylene ether sulfate and the polycarboxylate are both amine salts.
In some preferred embodiments, the weight ratio of the polyoxyethylene ether sulfate, the small molecule alkylene oxide block copolymer, and the polycarboxylate is (1-4): (0.1-3): (2-5).
In some preferred embodiments, the suspension aid comprises a combination of one or more of magnesium aluminum silicate, hydrated silica, organobentonite, kaolin, polyamide wax.
Further preferably, the suspension aid is magnesium aluminum silicate and hydrated silicon dioxide; the weight ratio of the magnesium aluminum silicate to the hydrated silicon dioxide is (0.4-3): 1.
in some preferred embodiments, the rheological aid is an extracellular acidic heteropolysaccharide,
in order to increase the molecular order of the suspending agent, the extracellular acidic heteropolysaccharide is preferably produced by fermentation of Xanthomonas. The invention discovers that extracellular acidic heteropolysaccharide generated by fermentation of selected xanthomonas can be associated with water molecules in a suspending agent to form a three-dimensional hydration network structure, and effectively inhibits decomposition of pyridaben and dinotefuran.
In some preferred embodiments, the small molecule alcohol comprises a combination of one or more of methanol, ethanol, propanol, ethylene glycol, glycerol, isopropanol, diethylene glycol, and propylene glycol butyl ether.
In some preferred embodiments, the small molecule alcohol has a melting point of-20 to 10 ℃ and a boiling point of 170 to 210 ℃ and 101.3kPa.
In some preferred embodiments, the anti-foaming agent comprises a combination of one or more of a polyether, a higher alcohol, a polysiloxane, a polyether modified silicone.
In some preferred embodiments, the antimicrobial agent comprises a combination of one or more of benzoic acid and salts thereof, parabens, sorbic acid, and parabens.
The bacteriostatic agent is benzoate.
In the research process, the invention discovers that when the suspension auxiliary agent is selected from magnesium aluminum silicate and the rheological auxiliary agent is selected from extracellular acidic heteropolysaccharide generated by fermentation of xanthomonas, the obvious synergistic effect can be exerted, the dispersion of solid-phase particles in a system in a water phase is controlled, and the suspension is easy to re-disperse under the action of the auxiliary agent when the suspension has a tendency of precipitation, the side chain of the polysaccharide macromolecule forms a spiral structure along with the main chain in a specific winding way, the small-particle-size suspension auxiliary agent is wrapped among polymer molecular chains to provide the spreadability for effective components, and the insecticidal composition is uniformly attached to the surfaces of leaves of crops (especially cabbage) when in use, so that the efficient insecticidal effect can be achieved under the condition of lower dosage.
In some preferred embodiments, the suspending agent is prepared by a process comprising:
adding the raw materials into a blending tank according to the formula amount, carrying out coarse grinding on the mixture by using a high-shear emulsifier, then transferring the mixture into a sand mill, carrying out fine grinding until the fineness is less than or equal to 5 mu m, and filtering and discharging the material to obtain the finished product.
Has the advantages that:
the invention provides an insecticidal composition with high control effect and strong safety, which has the following advantages:
(1) The weight ratio of 1:1, the pyridaben and the dinotefuran effectively improve the protection effect of the insecticidal composition on cruciferous crops, the obtained insecticidal composition has extremely strong killing effect on flea beetles, and the leaf protection effect is as high as more than 90%;
(2) The specific active ingredients and raw materials such as polyoxyethylene ether sulfate, ethylene oxide propylene oxide copolymer, polycarboxylic acid amine and the like are adopted to act together, so that the adhesion capability of the insecticidal composition on the surfaces of cabbage leaves is improved, and the insecticidal composition can still keep higher insect pest killing effect in a humid area;
(3) The pyridaben, the dinotefuran and the magnesium aluminum silicate, the hydrated carbon dioxide, the glycol and other raw materials are controlled to act together in the suspending agent, so that the suspending agent is promoted to be uniformly dispersed, the stability of the insecticidal composition is improved, and the suspending agent has a high suspension rate.
Drawings
FIG. 1 is a schematic diagram of the arrangement of two medium and small areas in the field efficacy test;
FIG. 2 is the meteorological data during the second test period of the field efficacy test;
FIG. 3 shows the results of the analysis of the original variance at different treatment times in the second field test of efficacy.
Detailed Description
Example 1.
The embodiment provides an insecticidal composition with high control effect and strong safety, and the raw materials of the insecticidal composition comprise pyridaben and dinotefuran; the weight ratio of the pyridaben to the dinotefuran is 1:1;
the insecticidal composition is applied to a suspending agent, and the suspending agent comprises the following raw materials in percentage by weight: 10% of pyridaben, 10% of dinotefuran, 7% of a dispersing agent, 2% of a suspension auxiliary agent, 0.2% of a rheological auxiliary agent, 4% of small molecular alcohol, 0.3% of a bacteriostatic agent, 0.3t% of an antifoaming agent, and the balance of a solvent.
Pyridaben, english name: pyridaben, CAS accession number: 96489-71-3, molecular formula: C19H25ClN2OS, molecular weight: 364.9; from Shandong Yuanfeng Biotech, inc.
Dinotefuran, english name: dinotefuran, CAS accession No.: 165252-70-0, molecular formula: C7H14N4O3, molecular weight: 202.2111; from Shandong Yuanfeng Biotech, inc.
The dispersing agent comprises polyoxyethylene ether sulfate, a small molecular alkylene oxide block copolymer and polycarboxylate; the weight ratio of the polyoxyethylene ether sulfate to the micromolecule alkylene oxide block copolymer to the polycarboxylate is 2.
The polyoxyethylene ether sulfate is styrene phenol polyoxyethylene ether ammonium sulfate salt, is sourced from Nanjing Taihua chemical company Limited and has the model of 7285-X.
The micromolecule alkylene oxide block copolymer is ethylene oxide propylene oxide copolymer and is sourced from Shanghai-sourced leaf biotechnology limited company.
The polycarboxylate is polycarboxylate amine and originated from the Weifang Dadong chemical Co., ltd.
The suspension auxiliary agent is magnesium aluminum silicate and hydrated silicon dioxide; the weight ratio of magnesium aluminum silicate to hydrated silica is 1:1.
The magnesium aluminum silicate is from Wuhan Ji industry promotion chemical company, ltd; the particle size of the hydrated silicon dioxide is 325 meshes, and the hydrated silicon dioxide is specifically fumed silica and is sourced from Shandong war biological technology limited.
The rheological additive is extracellular acidic heteropolysaccharide generated by fermentation of Xanthomonas, specifically xanthan gum, and is derived from Shenzhenlufu Biotech limited.
The melting point of the micromolecule alcohol is-12 ℃, the boiling point of the micromolecule alcohol is 197.3 ℃, and 101.3kPa; in particular ethylene glycol.
The antifoaming agent is polysiloxane, is available from Jinying Shanghai Kong company of Jinan province, and has a model number of DEFART @2335.
The bacteriostatic agent is sodium benzoate, and the CAS number is 532-32-1.
Sample numbers of the pesticidal composition applied to the suspending agent: TSN20201143, gross weight: 112g, appearance/color: homogeneous liquid, date of manufacture: 2020.7.4, lot number: 20200704, pot life: 2 years, date of origin: 2020.7.30, storage conditions: and (5) storing at normal temperature.
Comparative example 1.
A 50% pyridaben suspension from guangdong gumefeng biotechnology limited.
Sample number: CSN0020201133, pesticide accession number: PD20180092, gross weight: 38g, appearance/color: white translucent homogeneous liquid, date of manufacture: 2020.4.17, lot number: 20200417, pot life: 2 years, date of sample arrival: 2020.7.30, storage conditions: and (5) storing at normal temperature.
Comparative example 2.
20% pyridaben dinotefuran suspending agent (Qingdao Audis Biotech Co., ltd.)
Sample number: CSN0020201134, pesticide accession number: PD20183065, gross weight: 48g, appearance/color: white suspension, date of manufacture: 2020.7.26, lot number: 20200726-4, pot life: 2 years, date of origin: 2020.7.30, storage conditions: and (5) storing at normal temperature.
Comparative example 3.
20% dinotefuran suspending agent (Lizee Longge plant protection technology Co., ltd.)
Sample number: CSN0020201135, pesticide accession number: PD20182645, gross weight: 123g, appearance/color: white homogeneous liquid, date of manufacture: 2020.7.10, lot number: 20200710, pot life: 2 years, date of origin: 2020.7.30, storage conditions: and (5) storing at normal temperature.
Performance test method
1. One of field drug effect tests
1 conditions of the test
1.1 crop and target: crop/cabbage/Lvmeiya spring
Target/striped flea beetle [ Pyhllotreta spp. ]
1.2 test conditions: the test was conducted at test sites of 7 groups of Taihe Zhengguancun, tokyo, meishan, sichuan province, from 20 days 8/2020 to 30 days 8/2020. Cabbage variety: planting in winter spring of Lumei, sowing in 17 days of 7 months in 2020, transplanting in 10 days of 8 months in 2020, and planting row spacing is 60cm multiplied by 50cm. Performing the following steps: cabbage. The field is muddy soil, the pH value is 5.5, the organic matter content is 1.60 percent, and the fertility level is medium. No other insecticides were applied prior to testing.
2 test design and arrangement
2.1 Agents
2.1.1 test Agents
Example 1 and comparative examples 1 to 3.
2.1.2 control Agents
2.1.3 test treatment
2.2 cell arrangement
2.2.1 cell arrangement: the cells are arranged in random block groups, see table 6 for a schematic representation of the cells.
2.2.2 cell area and repetition: 4 times of repetition, cell area 20m 2 And a protection row is arranged among the cells.
2.3 modes of application
2.3.1 application time and frequency: spraying for 1 time in the first full period of adult yellow striped flea beetles of cabbage in 20 days of 8 months in 2020; the weather conditions at the test site on the day of application are shown in Table 4.
2.3.2 instruments used and methods of application: the liquid medicine is prepared by adopting a secondary dilution method, and the main preparation workers comprise: scales, graduated cylinders, pipettes, glass rods, and the like. Spraying with HD400 sprayer, spraying pressure 0.2-0.4Mpa, orifice diameter 1mm, and water consumption 1.5L per cell.
2.3.3 meteorological data: the meteorological data during the test are shown in Table 5.
2.3.4 soil data: the soil has pH value of 5.5, organic matter content of 1.60% and moderate fertility level.
2.3.5 prevention of non-target biological conditions: no other agents were administered during the trial.
3 investigation and results
3.1 investigation method:
insect quantity investigation: sampling is carried out at 5 points per cell, and the number of imagoes is investigated by taking 8 plants at each point. Investigation of hazard conditions: sampling is carried out at 5 points in each cell, 4 survey leaves are taken at each point to investigate the damage condition of the adult insects, and the damage index of the leaves is recorded and calculated according to the following classification method. Level 0: no harm is caused; level 1: the leaves are damaged sporadically; and 3, level: less than one third of the area of the blade is damaged; and 5, stage: one third or one half of the area of the blade is damaged; and 7, stage: one-half to two-thirds of the area of the blade is damaged; and 9, stage: over two thirds of the area of the blade is damaged.
3.2 survey time and number:
the insect quantity is investigated 1 time before the medicine and 1, 7 and 10 days after the medicine; the damage condition of 1 time is investigated by clear water in comparison with the damage peak period of the leaves. The specific time is as follows: 20 days 8/2020, 21 days 8/2020, 27 days 8/2020, and 30 days 8/2020.
3.3 the test complies with the quality management standard of pesticide registration test, GB/T17980.18-2000, SOP-TM-053a cabbage yellow stripe flea beetle test, and the calculation formula is as follows
3.4 Effect on other organisms:
no significant effect of the test agent on other organisms was observed during the test.
3.5 test results
3.5.1 prevention and treatment effects: the average control effect, harm index and leaf protection effect of the A-G medicaments are shown in a table 1;
the original data table of the A-G medicaments for preventing and treating the cabbage yellow flea beetles is shown in a table 2; the raw data for the leaf hazard index and leaf retention effect of the A-G agents are shown in Table 3.
TABLE 1 average control effect and hazard index of A-G drugs for controlling cabbage yellow striped flea beetle and She Xiaoguo head/40 plants guaranteed (2020 Sichuan Dongpo district)
The data in the table are 4-time repeat means, the analysis of variance was performed by DPS (v 7.05 version), and the letters indicate significance of difference (upper case 0.01 level, lower case 0.05 level, DMRT method)
3.5.2 safety: during the test period, the cabbage grows normally, and no phytotoxicity symptom is observed.
4 evaluation and discussion
40 ml, 60ml and 80ml of the insecticidal composition provided by the embodiment 1 of the invention are used for preventing and treating the cabbage flea beetles, the insecticidal effects are respectively 76.1-87.3%, 90.7-95.1%, 91.4-93.1% after 1, 7 and 10 days after the insecticidal composition is applied, and the peak period of leaf damage is She Xiaoguo 86.7.7-92%. The control medicament 50% pyridaben suspending agent is used for 30 ml per mu, the insecticidal effect is respectively 75.3%, 82.7% and 80.5% after 1, 7 and 10 days, and the leaf damage peak period is She Xiaoguo 76.7.7%. The control medicament 20 percent pyridaben-dinotefuran suspension is used for 90 milliliters per mu, the insecticidal effects are respectively 85.2 percent, 94.9 percent and 94.3 percent after 1 day, 7 days and 10 days after the pesticide application, and the leaf damage peak period protection She Xiaoguo 92.7.7 percent. The control medicament 20% dinotefuran suspending agent is used for 50 ml per mu, the insecticidal effects are respectively 70.9%, 83% and 85.6% after 1, 7 and 10 days, and the leaf damage peak period is She Xiaoguo 73.3.3%. The statistical data of the leaf protection effect at the peak period of leaf damage is used for variance analysis, the difference of the leaf protection effect of each dose of the test agent is She Xiaoguo is not significant, and compared with a control agent, the leaf protection effect of each dose of the embodiment is significantly higher than that of a 50% pyridaben suspending agent which is used in 30 milliliters per mu and that of a 20% dinotefuran suspending agent which is used in 50 milliliters per mu. 60ml and 80ml of the suspending agent for killing pyridaben and dinotefuran with the concentration of 90 ml are used for protecting leaves for each mu.
Test results show that when the insecticidal composition provided by the invention is used for preventing and treating cabbage flea beetles, the prevention effect is improved along with the increase of the dosage, the insecticidal effect is 76.1-87.3% 1 day after the insecticidal composition is applied, and the quick action is better; the insecticidal effect is 90.7-95.1% after 7 days, the harm of the yellow striped flea beetles of the cabbages is reduced, and the control effect is good; the insecticidal effect is still kept above 91.4% after the insecticide is applied for 10 days, the leaf protection effect is kept above 86.7% during the peak period of leaf damage, and the insecticide shows excellent lasting effect. Cabbage grew normally during the test period and no phytotoxicity symptoms were observed. The 20% pyridaben-dinotefuran suspending agent can be used for preventing and treating cabbage striped flea beetles.
According to the test result of 2020, the insecticidal composition provided by the invention is used for preventing and controlling the cabbage yellow flea beetle, 40-80 ml (120-240 g/hectare of active ingredients) is recommended to be used per mu, and the insecticidal composition is sprayed for 1 time at the initial full period of the cabbage yellow flea beetle imago.
Description of experimental deviations:
deviation description: the plan requires sampling at 5 points per cell, taking 4 plants per point to investigate the adult quantity, actually sampling at 5 points per cell, and taking 8 plants per point to investigate the adult quantity.
Deviation evaluation: the cabbage yellow flea beetle imagoes are easy to be disturbed, the quantity of field insects is relatively small, the investigation range is expanded, the scientific evaluation of the drug effect is facilitated, and the deviation does not influence the evaluation of the test reagent.
2. Second test of field drug effect
1 conditions of the test
1.1 crop and target: crop/cabbage/Jingfeng No. one
Target/striped flea beetle [ Pyhllotreta spp. ]
1.2 test conditions: the test was conducted in the cabbage pilot field in the modern agriculture industrial park, hopkinson, agricultural academy of sciences, yongting Yuting, suzhou, 2020, 8/9/23/2020. Cabbage variety: jingfeng No. one, growth period: in the seedling stage, the row spacing of the plants is 45cm multiplied by 45cm, and about 3300 plants are planted per mu. Cabbage and other vegetables are planted around the test field. The soil fertility of the test field is moderate, and the field management level is good.
2 test design and arrangement
2.1 Agents
2.1.1 test Agents
Example 1 and comparative examples 1 to 3.
2.1.2 control Agents
2.1.3 test treatment
2.2 cell scheduling
2.2.1 cell arrangement: the cells are arranged in random groups, as shown in the schematic diagram of the cell arrangement shown in fig. 1.
2.2.2 cell area and repetition: 4 times of repetition, cell area 20m 2 。
2.3 modes of application
2.3.1 application time and frequency: the medicine is administered 1 time in 2020, 9/8 days.
2.3.2 instruments used and methods of application:
the test agent was sprayed with water in an amount of 750kg of the agent per hectare.
Spraying with a 15L electric sprayer under the brand name SX-MD15DA, wherein the spray head is a conical spray head with a hole diameter of 0.7mm, a pressure of 0.3-0.45MPa and a flow of 0.70-0.90L/min. After the calibration is carried out on 9, 8 and 2020, the error is less than or equal to 5 percent.
2.3.3 meteorological data:
the temperature is 26.2-29.8 ℃, the wind speed is 0-0.8m/s and the relative humidity is 57.1-63.2% in the application period. The test day is fine, south wind and breeze, the lowest temperature is 24 ℃, the manuscript forming temperature is 35 ℃, and the relative humidity is 59.8%. The meteorological data during the test are shown in detail in figure 2.
2.3.4 soil data:
the test Tian Tuzhi is yellow soil, the pH is 6.69, the organic matter content is 33.58g/kg, the total nitrogen content is 1.83g/kg, the alkaline hydrolysis nitrogen content is 168.28mg/kg, the total phosphorus content is 651.79mg/kg, the quick-acting phosphorus content is 13.12mg/kg, the quick-acting potassium content is 87.92mg/kg, the fertility is better, and the field management level is better.
3 investigation and results
3.1 investigation method:
the method is carried out according to the GB/T17980.18-2000 pesticide field pesticide effect test rule (I) part 18 of the pesticide for preventing and treating the cruciferous vegetable yellow striped flea beetles and the corresponding SOP.
Investigating the base number before application and the adult number 2 days, 7 days and 15 days after application; the number of live larvae in soil was investigated simultaneously 15 days after the administration.
Adult survey: sampling is carried out at 5 points per cell, and 4 plants per point are taken to investigate the number of the yellow flea beetles on the leaves of the whole plant.
Larva investigation: after 15 days of pesticide application, 5 points are fixed in each plot, 2 plants are planted in each spot, the soil at the roots and around the plants is dug out and rinsed by clear water, and the number of live larvae in the soil is investigated.
3.2 the calculation method of the drug effect:
3.3 direct impact on crops:
within the range of the tested dose, no adverse effect on cabbage growth was found.
3.4 test results
The test results of 1-7 medicaments for preventing and treating the cabbage yellow flea beetles are shown in a table 7.
Statistical analysis is carried out by adopting a Duncan type new complex pole difference method in DPS software with the version number of 17.10, and the original analysis results of the variance in different processing times are shown in figure 3.
The results show that the suspending agent provided in example 1 is used for spraying 1 time with 750kg of water according to the use amount of 120g, 180g and 240g of active ingredients per hectare at the initial stage of the occurrence of the cabbage flea beetle, and the harm of the cabbage flea beetle can be controlled to a certain extent. The comprehensive test results show that the recommended dosage is 180-240g (namely the pharmaceutical dosage is 60ml-80 ml/mu), 750kg of water is added, and the damage of the cabbage yellow flea beetles can be effectively controlled after 1 time of spraying.
No adverse effect on cabbage growth was found during the test.
Performance test data
TABLE 2A-G medicaments for controlling cabbage yellow striped flea beetle head/40 plants in original data sheet (2020 in east slope region of Sichuan)
TABLE 3 original data sheet for hazard index grading and leaf protection effect of A-G medicament for preventing and treating cabbage yellow striped flea beetle leaves (Sichuan Dongpo 2020)
TABLE 4 weather conditions table of the test area of the day of drug administration (Si Chuan Dong slope 2020)
TABLE 5 weather data table during the test (Sichuan Dongpo area 2020)
TABLE 6 cell diagram
| D1 | G2 | C3 | B4 |
| B1 | E2 | A3 | G4 |
| F1 | B2 | E3 | D4 |
| E1 | A2 | D3 | C4 |
| C1 | F2 | B3 | A4 |
| A1 | D2 | G3 | F4 |
| G1 | C2 | F3 | E4 |
TABLE 7.1-7 test results of the agents for preventing and treating cabbage yellow striped flea beetle
Note: the numbers in the table are the average of 4 replicates, the lower case letters following the numbers indicating significance of difference (DMRT, ρ < 0.05).
Claims (10)
1. An insecticidal composition with high control effect and strong safety is characterized in that raw materials comprise pyridaben and dinotefuran; the weight ratio of the pyridaben to the dinotefuran (0.5-2): 1;
the sum of the weight of the pyridaben and the dinotefuran accounts for 10-35wt% of the total weight of the insecticidal composition.
2. The application of the insecticidal composition with high control effect and high safety as claimed in claim 1, wherein the insecticidal composition is applied to one of a suspending agent, a water dispersible granule, a wettable powder and an aqueous emulsion.
3. The use of the insecticidal composition according to claim 2, wherein the insecticidal composition is applied to a suspending agent; the raw materials of the insecticidal composition also comprise 1-10% of a dispersing agent, 0.5-5% of a suspension auxiliary agent, 0.1-0.5% of a rheological auxiliary agent, 1-10% of small molecular alcohol and the balance of a solvent.
4. The use of the insecticidal composition according to claim 3, wherein the insecticidal composition further comprises, in weight percent, 1-10% of a dispersant, 0.5-5% of a suspension aid, 0.1-0.5% of a rheology aid, 1-10% of a small molecular alcohol, and the balance of a solvent.
5. The use of the insecticidal composition with high control effect and high safety according to claim 4, wherein the raw materials of the insecticidal composition further comprise 0.1-0.5wt% of bacteriostatic agent and 0.1-1wt% of antifoaming agent.
6. The use of a pesticidal composition according to any one of claims 3 to 5, wherein the dispersant comprises a combination of one or more of polyoxyethylene ether sulfate, a small molecule alkylene oxide block copolymer, a polycarboxylate, a lignosulfonate, a polyacrylate, a succinate sulfonate, and a phenol ether phosphate.
7. The use of a pesticidal composition according to any one of claims 3 to 6, wherein the suspension aid comprises a combination of one or more of magnesium aluminium silicate, hydrated silica, organobentonite, kaolin, polyamide wax.
8. The use of a pesticidal composition according to claim 4 or 5, wherein the small molecule alcohol comprises one or more of methanol, ethanol, propanol, ethylene glycol, glycerol, isopropanol, diethylene glycol, and propylene glycol butyl ether.
9. The application of the insecticidal composition with high control effect and high safety as claimed in claim 8, wherein the melting point of the small molecular alcohol is-20-10 ℃, the boiling point is 170-210 ℃, and 101.3kPa.
10. The use of a highly efficacious and safe insecticidal composition according to claim 4, wherein said antimicrobial agent comprises one or more of benzoic acid and its salts, parabens, sorbic acid, and parabens.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102273481A (en) * | 2011-06-10 | 2011-12-14 | 青岛奥迪斯生物科技有限公司 | Dinotefuran-containing pesticidal composition |
| CN103843809A (en) * | 2012-12-05 | 2014-06-11 | 于海军 | Insecticidal composition containing dinotefuran |
| CN104920441A (en) * | 2015-07-02 | 2015-09-23 | 青岛泰生生物科技有限公司 | Pesticide composition for preventing and treating striped flea beetles |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102273481A (en) * | 2011-06-10 | 2011-12-14 | 青岛奥迪斯生物科技有限公司 | Dinotefuran-containing pesticidal composition |
| CN103843809A (en) * | 2012-12-05 | 2014-06-11 | 于海军 | Insecticidal composition containing dinotefuran |
| CN104920441A (en) * | 2015-07-02 | 2015-09-23 | 青岛泰生生物科技有限公司 | Pesticide composition for preventing and treating striped flea beetles |
Non-Patent Citations (1)
| Title |
|---|
| 山东滨海瀚生生物科技有限公司: "35%呋虫·哒螨灵水分散粒剂", pages 1, Retrieved from the Internet <URL:https://www.icama.cn/BasicdataSystem/pesticideRegistration/tagview.do?pdno=PD20183277> * |
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