CN111011390A - Seed treatment agent containing thiamethoxam, metalaxyl-M and pyraclostrobin and application thereof - Google Patents
Seed treatment agent containing thiamethoxam, metalaxyl-M and pyraclostrobin and application thereof Download PDFInfo
- Publication number
- CN111011390A CN111011390A CN201911364172.6A CN201911364172A CN111011390A CN 111011390 A CN111011390 A CN 111011390A CN 201911364172 A CN201911364172 A CN 201911364172A CN 111011390 A CN111011390 A CN 111011390A
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- China
- Prior art keywords
- metalaxyl
- pyraclostrobin
- thiamethoxam
- seed treatment
- treatment agent
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Classifications
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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
-
- 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
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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
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/46—N-acyl derivatives
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/24—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing the groups, or; Thio analogues thereof
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- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
The invention provides a seed treatment agent, which contains thiamethoxam, metalaxyl-M and pyraclostrobin, wherein the weight ratio of thiamethoxam, metalaxyl-M and pyraclostrobin is 5-20: 1-10; can be used for seed treatment and prevention of crop diseases and insect pests.
Description
Technical Field
The invention belongs to the field of pesticides, and particularly relates to a seed treatment agent containing thiamethoxam, metalaxyl-M and pyraclostrobin and application thereof.
Background
The seed treating agent is a new technology developed on the basis of the traditional seed soaking and dressing technology, and has important significance for improving the seed quality and promoting the agricultural production and income increase. The seed coating agent in the prior art has the defects of single control spectrum and incapability of controlling crop pests and diseases at the same time. The invention aims to research the compounding of pesticides and provides a seed treating agent capable of preventing and treating crop pests and diseases simultaneously.
Thiamethoxam belongs to a second generation neonicotinoid insecticide and has high activity and safety. The thiamethoxam not only has contact poisoning, stomach toxicity and systemic activity, but also has the characteristics of wide insecticidal spectrum, high activity, long lasting period and the like, and has good control effect on homoptera and thysanoptera pests.
metalaxyl-M is R isomer of ordinary metalaxyl, and is a high-efficiency systemic fungicide. The product has protective and therapeutic effects, high drug effect, low residue, and good environmental compatibility, and is a systemic bactericide with preventive and therapeutic effects.
Pyraclostrobin is a novel methoxy acrylate broad-spectrum bactericide, and can control most diseases of ascomycetes, basidiomycetes, deuteromycetes, oomycetes and the like. Pyraclostrobin has strong inhibitory effect on spore germination and growth of intraleaf mycelium, and has protection and therapeutic activity. The composition has the characteristics of permeability, local systemic activity, long lasting period and rain wash resistance, and is widely used for preventing and treating diseases of wheat, rice, peanuts and other field crops.
In the prior art, no report is provided about the preparation of seed treatment agent by combining thiamethoxam, metalaxyl-M and pyraclostrobin
Disclosure of Invention
The invention provides a seed treatment agent, which contains thiamethoxam, metalaxyl-M and pyraclostrobin, and can be used for treating crop seeds to effectively prevent and treat crop diseases and insect pests.
The invention is realized by the following modes:
a seed treatment agent is characterized by containing thiamethoxam, metalaxyl-M and pyraclostrobin, wherein the weight ratio of thiamethoxam, metalaxyl-M and pyraclostrobin is 5-20: 1-10.
The seed treatment agent is characterized in that the weight ratio of thiamethoxam, metalaxyl-M and pyraclostrobin is 5-20: 1-10: 1-5.
The seed treatment agent is characterized in that the weight ratio of thiamethoxam, metalaxyl-M and pyraclostrobin is 5-20: 1-10: 1.
The seed treatment agent is characterized in that the dosage form of the seed treatment agent is a suspension seed coating agent.
The seed treating agent is characterized in that the percentage content of active ingredients in the suspension seed coating agent is 10-60%. Preferably 15-35%
The seed treatment agent is used for preventing and treating crop diseases and insect pests. The crops are corn, wheat and cotton.
Compared with the prior art, the invention has the following beneficial effects:
after the metalaxyl-M and the pyraclostrobin are combined, the inhibiting activity of the metalaxyl-M and the pyraclostrobin on pathogenic bacteria can be obviously improved, and the metalaxyl-M and the pyraclostrobin have a synergistic effect on the pathogenic bacteria when the ratio of the metalaxyl-M to the pyraclostrobin is 1: 1-10: 1.
The bactericides metalaxyl-M and pyraclostrobin can enhance the control effect of thiamethoxam on aphids, and show a synergistic effect.
The suspension seed coating agent prepared by the invention can effectively prevent and control corn aphids and corn head smut, and the prevention effect is about 90%. And field observation shows that the fertilizer is safe for corn crops; can be popularized and used.
Detailed Description
The following detailed description of specific embodiments of the present invention is provided in conjunction with examples, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
EXAMPLE 1 indoor bacteriostatic test of Agents on maize head smut pathogen
Pathogenic bacteria to be tested: collecting corn head smut pathogenic bacteria in 2015 year, separating and purifying
The test method comprises the following steps: on the basis of the pilot test, the drug stock solution was diluted with acetone to 5 concentrations in series. Sterilizing PDA culture medium, cooling, adding the prepared medicinal liquid, and shaking to obtain toxic culture medium containing test agents with series concentrations, with the addition of acetone of the same amount as control. Each treatment was set to 3 replicates. A head smut spore suspension was prepared and examined under a microscope at a low magnification (10X 20) and the number of spores per field was adjusted to about 50. 0.1ml of spore suspension is dripped into each treatment of the prepared PDA plate, and the mixture is scraped and evenly coated and placed in an incubator at the temperature of 28 ℃. When the control germination rate reaches the maximum value after 72h of culture, spore germination conditions in each medicament treatment are observed. A total of 300 spores were investigated in 3 fields per PDA plate.
The calculation method comprises the following steps: spore germination rate (%) - (germinated spores/300) × 100;
spore germination inhibition (%) is (CK germination rate-treatment germination rate) × 100/CK germination rate
The reagent EC50 values were determined using the DPS software.
TABLE 1 inhibitory virulence of agents on Sporosporium filiformis
As can be seen from Table 1, metalaxyl-M and pyraclostrobin have excellent inhibitory activity on spore germination of Rhizoctonia solani pathogenic bacteria. Thiamethoxam has no inhibitory activity on the germination of hypha smut pathogenic bacteria spores under 500 mg/L.
After the metalaxyl-M and the pyraclostrobin are combined, the inhibiting activity of the metalaxyl-M and the pyraclostrobin on pathogenic bacteria can be obviously improved, the metalaxyl-M and the pyraclostrobin have a synergistic effect on the pathogenic bacteria when the ratio is 1: 1-10: 1, and have an additive effect when the ratio is 1: 10.
After the thiamethoxam is combined with the bactericides metalaxyl-M and pyraclostrobin, the thiamethoxam can improve the inhibitory activity of the bactericides on the germination of the hypha smut pathogenic bacteria spores, and the EC50 value of the ternary composition is obviously smaller than the EC50 value of the bactericide after compounding. Particularly, when the ratio of metalaxyl-M, pyraclostrobin and thiamethoxam is 1: 20, compared with the 1: 1 compounding of metalaxyl-M and pyraclostrobin, the toxicity is improved by 1.53 times, and the obvious synergistic effect is shown.
EXAMPLE 2 indoor toxicity test of Agents against corn aphids and soil insects
Corn aphid test
Test materials: corn aphid, selecting wingless aphid (with uniform size and color)
The test method comprises the following steps: the leaf soaking method is adopted. On the basis of the pilot test, the drug stock solution was diluted with acetone to 5 concentrations in series. Beating fresh and clean leaves into 5 cm-diameter disks, respectively soaking in each gradient liquid medicine for 10s, taking out, drying at room temperature, and placing in a culture dish for 4 times per concentration. Inoculating about 30 healthy, active and consistent aphids into each dish, feeding in a constant temperature box, and taking the water solution soaked with corresponding acetone as a blank control. Each treatment was repeated 4 times. The results were examined 48h after treatment. Criteria for death: the tip of the writing brush is touched to the aphid body slightly, and the aphid is dead. Control mortality above 20% is a null test. The standard for judging the death of the test insects is as follows: the dead was marked by touching the body with a fine hair pen. The LC50 value of the medicament is obtained by DPS software
TABLE 2 indoor toxicity of agents on corn aphids
Soil pest test
Test materials: selecting 3 rd larva of the same batch of newly molted 12h
The test method comprises the following steps: the leaf soaking method is adopted. On the basis of the pilot test, the drug stock solution was diluted with acetone to 5 concentrations in series. Washing off wax layer on the surface of fresh and tender leaves, drying, punching into small leaf disks with diameter of 1.5cm, soaking the leaf disks in different treatment liquid medicines for 10s, taking out, drying on absorbent paper, putting into 24-hole cell culture plates, putting 3 leaf disks in each hole, inoculating 1 head of 3-year-old larva into each hole, repeating each treatment for 4 times, repeating each for 24 times for testing insects, and using the water solution containing corresponding acetone as blank control. The dead insects are checked for 48h after the feeding observation under the laboratory condition, and the non-responder is regarded as dead by touching the non-responder with a writing brush. Control mortality above 20% is a null test. The drug LC50 values were determined using the DPS software.
TABLE 3 indoor toxicity of the agents on black cutworm
As can be seen from tables 3 and 4, the bactericides metalaxyl-M and pyraclostrobin can enhance the control effect of thiamethoxam on aphids; the bactericide has a certain enhancing effect on the thiamethoxam for preventing and treating the agrotis ypsilon, but the enhancing effect is not obvious.
EXAMPLE 4 formulation
Formula 1: 24% thiamethoxam, metalaxyl-M, pyraclostrobin suspension seed coating agent
And (2) formula: 22% thiamethoxam, metalaxyl-M, pyraclostrobin suspension seed coating agent
Example 5 field control Effect test of suspended seed coating agent
The test method comprises the following steps: the artificial inoculation is adopted. Before sowing, the corn head smut fungus powder and the screened soil are mixed and stirred uniformly at a mass ratio of 1: 1000 to prepare 0.1% fungus soil, the seeds are dibbled and then covered by 100g of fungus soil, and then normal soil covering is carried out. Repeat 4 times, the random block arrangement of the district.
Disease investigation and statistics: the prevention effect of the head smut is investigated when symptoms are obvious after the ears are full. Each cell was investigated for total maize plants and diseased plants. The results obtained from the test were analyzed by a biometric method. The disease rate is the number of diseased plants/total number of corn plants in the plot; control efficacy is (blank incidence-incidence of treatment with drug)/blank incidence.
Insect pest investigation and statistics: in the initial stage of corn emasculation and the initial stage of aphid prosperity, randomly selecting 5 points in each plot, 10 plants in each point, investigating the quantity of aphids for the 1 st time, and calculating the control effect. Control effect (%) - (control area aphid number-control area aphid number)/treatment area aphid number × 100.
TABLE 5 summary of field control test results for suspended seed coating
As can be seen from Table 5: the suspension seed coating agent prepared by the invention can effectively prevent and control corn aphids and corn head smut. And field observation shows that the fertilizer is safe for corn crops.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (7)
1. A seed treatment agent is characterized by containing thiamethoxam, metalaxyl-M and pyraclostrobin, wherein the weight ratio of thiamethoxam, metalaxyl-M and pyraclostrobin is 5-20: 1-10.
2. The seed treatment agent according to claim 1, characterized in that the weight ratio of thiamethoxam, metalaxyl-M and pyraclostrobin is 5-20: 1-10: 1-5.
3. The seed treatment agent according to claim 1, wherein the weight ratio of thiamethoxam, metalaxyl-M and pyraclostrobin is 5-20: 1-10: 1.
4. The seed treatment according to any one of claims 1 to 3, wherein the seed treatment is in the form of a suspension seed coating.
5. The seed treatment agent according to claim 4, wherein the percentage of active ingredients in the suspended seed coating agent is 10% to 60%.
6. Use of a seed treatment according to any one of claims 1 to 5 for controlling crop pests.
7. The use according to claim 6, wherein the crop is maize, wheat, cotton.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014574 | 2019-10-23 | ||
| CN2019110145743 | 2019-10-23 |
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| CN111011390A true CN111011390A (en) | 2020-04-17 |
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| CN201911364172.6A Pending CN111011390A (en) | 2019-10-23 | 2019-12-25 | Seed treatment agent containing thiamethoxam, metalaxyl-M and pyraclostrobin and application thereof |
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| CN108477245A (en) * | 2018-04-03 | 2018-09-04 | 温妙云 | A kind of carrot high-yield planting method |
| CN109362770A (en) * | 2018-11-12 | 2019-02-22 | 安徽农业大学 | A kind of insecticidal and bactericidal composition containing thiamethoxam, pyraclostrobin and triazoles |
| CN111493077A (en) * | 2020-06-08 | 2020-08-07 | 辽宁壮苗生化科技股份有限公司 | 10% thiacloprid, pyrrole and Shuangling pesticide composition and pesticide preparation thereof |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101087526A (en) * | 2004-12-24 | 2007-12-12 | 拜尔农作物科学股份公司 | Synergistic mixtures exhibiting insecticidal and fungicidal action |
| CN102696645A (en) * | 2012-05-09 | 2012-10-03 | 广东中迅农科股份有限公司 | Pesticide composition containing pyraclostrobin and metalaxyl |
| CN105052983A (en) * | 2015-08-11 | 2015-11-18 | 山东农业大学 | Seed treating agent and special pesticide composition thereof |
| CN105360156A (en) * | 2015-11-25 | 2016-03-02 | 河北中天邦正生物科技股份公司 | Pesticide composition and application thereof |
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