CN115067352B - Seed treatment agent for preventing and controlling corn aphids and preparation method thereof - Google Patents

Seed treatment agent for preventing and controlling corn aphids and preparation method thereof Download PDF

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CN115067352B
CN115067352B CN202210818156.5A CN202210818156A CN115067352B CN 115067352 B CN115067352 B CN 115067352B CN 202210818156 A CN202210818156 A CN 202210818156A CN 115067352 B CN115067352 B CN 115067352B
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seeds
seed
preventing
seaweed
seed treatment
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CN115067352A (en
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石伟山
张龙
张阳洋
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Jiangsu Aijin Crop Technology Group Co ltd
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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
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/06—Coating or dressing seed
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/08—Immunising seed
    • 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
    • A01N43/14—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 six-membered rings
    • A01N43/16—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 six-membered rings with oxygen as the ring hetero atom
    • 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
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/03—Algae
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P7/00—Arthropodicides
    • A01P7/04—Insecticides

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Biotechnology (AREA)
  • Pest Control & Pesticides (AREA)
  • Soil Sciences (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Insects & Arthropods (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Abstract

The invention provides a seed treating agent for preventing and controlling corn aphids, which comprises the following components in percentage by weight: 15-40% of thiamethoxam, 1-10% of surfactant, 1-10% of seaweed extract, 1-10% of filler and 100% of deionized water; the seaweed extract is a mixture of seaweed polysaccharide and seaweed oligosaccharide. The seed treating agent prepared by the invention is used for preventing corn aphids, and the outer surface of the treated corn seeds form complete, high-strength and strong-adhesion seed coatings, so that the seeds are effectively protected, and meanwhile, the higher germination rate of the seeds is ensured, and the germination period is short; in addition, the seed treatment agent ensures that seeds are more suitable for mechanical sowing, and the seeds have strong fluidity and avoid ridge breakage.

Description

Seed treatment agent for preventing and controlling corn aphids and preparation method thereof
Technical Field
The invention relates to the technical field of pesticides, in particular to a seed treatment agent for preventing and controlling corn aphids and a preparation method thereof.
Background
Thiamethoxam belongs to a second generation of neonicotinoid insecticide, has an action mechanism similar to that of a first generation of neonicotinoid insecticide such as imidacloprid and the like, and has high activity and safety. Thiamethoxam not only has contact killing, stomach toxicity and systemic activity, but also has the characteristics of broad-spectrum insecticidal activity, high activity, long lasting period and the like, is very safe to animals, has no mutagenic, teratogenic and tumorigenic effects, and is very safe to beneficial insects. The thiamethoxam is prepared into a seed treatment agent, so that insect pests carried by seeds per se can be directly killed or soil-borne insect pest infection can be prevented, and the thiamethoxam has excellent control effect on corn aphids when the thiamethoxam is used for corn seed treatment.
The seed treating agent is used for forming seed coating and uniformly coating the effective components of the pesticide on the surface of the seeds. After the seeds are planted into the soil, the pesticide active ingredients are gradually released along with the germination of the seeds, the seed coating mainly plays roles of fixing the pesticide active ingredients and slowly releasing the pesticide active ingredients between the processes, seedlings are protected from being affected by diseases and insect pests in early, middle and later stages, the seeds need to breathe in the germination process, and moisture and nutrients in the soil need to be absorbed, so that the coated seeds need to be permeable and breathable, otherwise, slow or even no seedling emergence of the seeds can be caused. In addition, the seeds processed by the industry company are transported in a long distance, so that the coating on the surfaces of the seeds needs to be ensured to have certain strength and cannot fall off.
Aiming at the defects in the prior art, the thiamethoxam seed treatment agent provided by the invention can form complete, high-strength and strong-adhesion seed coating, can effectively prevent corn aphids, and can ensure the high germination rate and short germination period of seeds.
Disclosure of Invention
The invention provides a seed treating agent for preventing and controlling corn aphids, which comprises the following specific technical scheme:
A seed treatment agent for preventing and controlling corn aphids, which comprises the following components in percentage by weight: 15-40% of thiamethoxam, 1-10% of surfactant, 1-10% of seaweed extract, 0.5-10% of filler and 100% of deionized water; the seaweed extract is a mixture of seaweed polysaccharide and seaweed oligosaccharide.
Preferably, the seed treatment further comprises one or more of a thickener, preservative, antifreeze, colorant.
Preferably, the algal polysaccharide is selected from one or more of sodium alginate, potassium alginate and ammonium alginate.
Preferably, the weight ratio of the seaweed polysaccharide to the seaweed oligosaccharide is (2-5): 1.
Preferably, the particle size of the filler is 300-3000 mesh.
Preferably, the weight ratio of the seaweed extract to the filler is (3-5): 1.
Preferably, the filler is selected from one or more of titanium dioxide, aluminum oxide, calcium carbonate, diatomaceous earth, aerogel powder, clay, bentonite.
Preferably, the surfactant is an anionic surfactant and/or a nonionic surfactant.
Preferably, the thickener includes, but is not limited to, one or more of xanthan gum, gum arabic, methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, sodium polyacrylate, polyacrylamide, polyvinyl alcohol; the preservative includes, but is not limited to, a mixture of one or more of pinus koraiensis, benzoic acid and salts thereof, sorbic acid and salts thereof, salicylic acid and salts thereof; the antifreeze includes, but is not limited to, mixtures of one or more of glycerol, ethylene glycol, propylene glycol, hexylene glycol, cyclohexanol; the colorant includes, but is not limited to, one or more of aqueous rose, rose essence, acid scarlet.
The invention also provides a preparation method of the seed treating agent for preventing and controlling corn aphids, which comprises the following steps: firstly weighing seaweed extract according to a preset proportion, adding a surfactant, uniformly mixing, shearing by a high-shearing mixing emulsifying machine, weighing the rest raw materials according to a pre-calculated material proportion, uniformly mixing, transferring the slurry into a sand mill, and discharging after sand milling is finished.
The beneficial effects are that:
1. The seed treatment agent prepared by the invention can form complete, high-strength and strong-adhesion seed coating on the outer surface of corn seeds, thereby effectively protecting the seeds;
2. The seed treatment agent prepared by the invention ensures higher germination rate of seeds and has short germination period;
3. the seed treatment agent prepared by the invention ensures that seeds are more suitable for mechanized sowing, and the seed has strong fluidity and avoids ridge breakage;
4. The seed treatment agent prepared by the invention has excellent corn aphid control effect and improves the growth index of crops.
Detailed Description
The invention is further illustrated with reference to specific embodiments.
The invention provides a seed treating agent for preventing and controlling corn aphids, which comprises the following specific technical scheme:
A seed treatment agent for preventing and controlling corn aphids, which comprises the following components in percentage by weight: 15-40% of thiamethoxam, 1-10% of surfactant, 1-10% of seaweed extract, 0.5-10% of filler and 100% of deionized water; the seaweed extract is a mixture of seaweed polysaccharide and seaweed oligosaccharide. Preferably, the seed treatment agent comprises the following components in percentage by weight: thiamethoxam 20-35%, surfactant 2-7%, seaweed extract 2-7%, filler 1-5%, deionized water for 100%
The inventor finds that the seaweed polysaccharide has weaker coating strength of seeds after being treated as a film forming agent in the research and development process, and can obviously improve the defect by matching with a filler, but the coating formed by matching the seaweed polysaccharide and the filler is too compact, so that the germination rate of the seeds is reduced, and the germination time is prolonged. In further exploration, the inventor unexpectedly discovers that the coordination of the seaweed polysaccharide and the seaweed oligosaccharide can effectively solve the problems, and ensures that the seeds have higher germination rate and shorter germination period.
In some embodiments, the seed treatment further comprises one or more of a thickener, preservative, anti-freeze, colorant.
In some embodiments, the algal polysaccharide is selected from the group consisting of sodium alginate, potassium alginate, and a mixture of one or more of ammonium alginate. In the selection of algal polysaccharide, sodium alginate, potassium alginate and ammonium alginate can all obtain seed treating agent with qualified performance, and further, sodium alginate is selected to control cost more easily, potassium alginate can obtain seed coating with stronger strength, potassium element is supplemented, ammonium alginate can supplement nitrogen element required by crops to a certain extent, and seed germination is promoted.
Preferably, the weight ratio of the seaweed polysaccharide to the seaweed oligosaccharide is (2-5): 1. the inventor finds that the seaweed polysaccharide and the seaweed oligosaccharide can obtain the coating with good strength and adhesion performance under the proper proportion in a large number of practices, meanwhile, the germination of seeds is not influenced, the coating structure is uniform and compact when the consumption of the seaweed oligosaccharide is too small, the efficiency of absorbing water and nutrition of the seeds is low, and the coating is poor in coating cladding property and easy to fall off when the consumption of the seaweed oligosaccharide is too large.
Preferably, the particle size of the filler is 300-3000 meshes; further preferably, the filler has a particle size of 400 to 1000 mesh; still more preferably, the filler has a particle size of 500 to 800 mesh. The proper filler particle size ensures the dispersibility and suspension stability of the filler in the seed treatment agent, can be used as a carrier of thiamethoxam raw medicine on the other hand, ensures the pharmacodynamic action of the raw medicine, can improve the fluidity of seeds and prevents broken ridges (the phenomenon of missing seedlings in some sections in ridges of drill crops) during mechanized sowing.
In some embodiments, the weight ratio of seaweed extract to filler is (3-5): 1. the inventors found in the study that when the amount of filler is insufficient, the improvement of the coating strength of the seeds is not obvious, but when the amount is excessive, the coating is easy to fall off from the surfaces of the seeds, and the suspension rate of the seed treatment agent is reduced.
In some embodiments, the filler is selected from the group consisting of one or more of titanium dioxide, aluminum oxide, calcium carbonate, diatomaceous earth, aerogel powder, clay, bentonite. Further preferably, the filler is light calcium carbonate.
Preferably, the surfactant is an anionic surfactant and/or a nonionic surfactant; further preferred, the anionic surfactant includes, but is not limited to, one or more of sodium dodecyl sulfate, sodium dodecyl sulfonate, alkyl naphthalene sulfonate, sodium methylene bis naphthalene sulfonate, sodium lignin sulfonate, alkyl amine taurates, polycarboxylates; the nonionic surfactant includes, but is not limited to, one or more of sorbitol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene alkyl alcohol amide.
Preferably, the thickener includes, but is not limited to, one or more of xanthan gum, gum arabic, methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, sodium polyacrylate, polyacrylamide, polyvinyl alcohol; the preservative includes, but is not limited to, a mixture of one or more of pinus koraiensis, benzoic acid and salts thereof, sorbic acid and salts thereof, salicylic acid and salts thereof; the antifreeze includes, but is not limited to, mixtures of one or more of glycerol, ethylene glycol, propylene glycol, hexylene glycol, cyclohexanol; the colorant includes, but is not limited to, one or more of aqueous rose, rose essence, acid scarlet.
The invention also provides a preparation method of the seed treating agent for preventing and controlling corn aphids, which comprises the following steps: firstly weighing seaweed extract according to a preset proportion, adding a surfactant, uniformly mixing, shearing by a high-shearing mixing emulsifying machine, weighing the rest raw materials according to a pre-calculated material proportion, uniformly mixing, transferring the slurry into a sand mill, and discharging after sand milling is finished.
Example 1
Test crop: corn middle sheet 909;
Test reagent: 25% thiamethoxam seed treatment was prepared according to the formulation of table 1 (formulations 1-5); CK1:30% thiamethoxam seed treatment suspension (swiss elda-Ruishen).
Table 1:25% thiamethoxam seed treatment agent formula
The raw materials are all commercially available, for example, thiamethoxam raw material can be purchased from Jiangsu green leaf Agrochemical Co., ltd, shandong middle-farm joint biotechnology Co., ltd, hebei Derui chemical Co., ltd and other units; sorbitol polyoxyethylene ether (CAS: 53694-15-8) is available from Hubei Xinghing chemical Co., ltd, nantong Chen wetting chemical Co., ltd; reax100M is manufactured by Meadwestvaco company; sodium alginate is produced by Qingdao Mingya seaweed group Co., ltd, the product code is LY1, the specification is 800-1000cps; the alginate oligosaccharides in the examples are low molecular weight sodium alginate produced by Qingdao Mingyu seaweed group Co., ltd, with a specification of 300-700cps, and in other examples may be selected alginate oligosaccharides produced by Qingdao Long Chuan Biotechnology Co., ltd, with a polymerization degree of 2-10; the light calcium carbonate in the examples was 600 mesh in size and sold by a number of manufacturers.
The preparation method comprises the following steps: firstly weighing sodium alginate and seaweed oligosaccharide according to a preset proportion, then adding sorbitol polyoxyethylene ether and Reax100M, uniformly mixing, shearing by a high-shearing mixing emulsifying machine, then adding rose essence, weighing the rest raw materials according to a pre-calculated material proportion, uniformly mixing, transferring the slurry into a sand mill, starting a motor, performing sand milling, and discharging after the particle size is detected to be qualified. The suspension rate of the formula 1-5 is more than or equal to 90%, and the suspension rate test method is described in GB/T14825-2006 "pesticide suspension rate determination method".
Performance evaluation 1: coating pass percent
The test method comprises the following steps: performance evaluation was performed according to the test method described in GB/T15671-2009 technical conditions for thin film coated seed for crop section 5.4.5-coating qualification rate test. The seed treatment agent is used for treating seeds with the dosage of 500mL/100 Kg.
Test results: see table 2 for coated seed pass rates for formulas 1-5.
TABLE 2 coated seed pass
Formulation 1 Formulation 2 Formulation 3 Formulation 4 Formulation 5
Coated seed yield 96％ 98.25％ 95.5％ 98.75％ 91％
Performance evaluation 2: degree of adhesion
The test method comprises the following steps: performance evaluation was performed according to the test method loaded in test of HG/T5443-2018 thiamethoxam seed treatment suspension 4.11 bar-adhesion. The seed treatment agent is used for treating seeds with the dosage of 500mL/100 Kg.
Test results: see table 3 for the degree of adhesion of formulations 1-5.
TABLE 3 degree of attachment
Formulation 1 Formulation 2 Formulation 3 Formulation 4 Formulation 5
Degree of adhesion 95.1％ 97.3％ 96.2％ 98.7％ 89.8％
Performance evaluation 3: bud ratio
The test method comprises the following steps: the performance was evaluated according to the test method described in GB/T3543.4-1995, germination test of crop seed test procedure. The seed treatment agent is used for treating seeds with the dosage of 500mL/100 Kg.
Test results: see table 4 for budding rates for formulas 1-5.
TABLE 4 corn budding rate
Formulation 1 Formulation 2 Formulation 3 Formulation 4 Formulation 5 CK1 Clean water
Bud ratio% 85b 98a 81b 97b 97b 90b 91b
Note that: the lower case letters differ significantly in the numerical values (P < 0.05)
Example 2
Test site: corn test field
Test crop: corn Su Yu No. 10
Test agent: formulation 4 of example 1
The test method comprises the following steps: before sowing, the medicines are firstly prepared into slurry according to the proportion of 500mL of medicine amount per 100kg of seeds and 2L of water. The prepared liquid medicine and seeds are fully stirred and mixed, so that the liquid medicine is uniformly distributed on the seeds, and the seeds are spread out and dried for single-seed sowing.
The investigation method comprises the following steps:
1 each of 15d, 30d and 60d after corn seedling establishment was investigated, for a total of 3 aphid cases. Randomly taking 100 corn plants in each cell, and investigating and recording the aphid quantity.
The calculation method comprises the following steps:
Control (%) = (control aphid number-treatment aphid number)/control aphid number x 100.
Test results: see table 5 for comparison of control of aphids by formulation 4, CK1 at 15d, 30d, 60d after corn emergence.
Table 5: formula 4, CK1 field corn aphid control effect
Note that: the lower case letters differ significantly in the numerical values (P < 0.05)
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same.

Claims (3)

1. The seed treating agent for preventing and controlling corn aphids is characterized by comprising the following components in percentage by weight: 25% thiamethoxam, 2% sorbitol polyoxyethylene ether, 2% reax100m, 3% sodium alginate, 1% trehalose, 0.1% xanthan gum, 1.2% kathon, 0.8% rose essence and deionized water make up 100%.
2. The seed treating agent for preventing and controlling corn aphids is characterized by comprising the following components in percentage by weight: 25% thiamethoxam, 2% sorbitol polyoxyethylene ether, 2% reax100m, 3% sodium alginate, 1% trehalose, 0.1% xanthan gum, 1.2% kathon, 0.8% rose essence, 1% light calcium carbonate and deionized water make up 100%.
3. A method of preparing a seed treatment for controlling corn aphids according to any one of claims 1 or 2, comprising the steps of: firstly weighing sodium alginate and seaweed oligosaccharide according to a preset proportion, then adding sorbitol polyoxyethylene ether and Reax100M, uniformly mixing, shearing by a high-shearing mixing emulsifying machine, then adding rose essence, weighing the rest raw materials according to a pre-calculated material proportion, uniformly mixing, transferring the slurry into a sand mill, starting a motor, performing sand milling, and discharging after the particle size is detected to be qualified.
CN202210818156.5A 2022-07-13 2022-07-13 Seed treatment agent for preventing and controlling corn aphids and preparation method thereof Active CN115067352B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102308838A (en) * 2011-09-28 2012-01-11 联保作物科技有限公司 Flowable concentrate for seed coating for insecticidal purpose and disease prevention
CN102326578A (en) * 2011-10-11 2012-01-25 联保作物科技有限公司 Pesticide composition and preparation thereof
CN105052983A (en) * 2015-08-11 2015-11-18 山东农业大学 Seed treating agent and special pesticide composition thereof
CN111449069A (en) * 2020-04-23 2020-07-28 青岛海力源生物科技有限公司 Alginic acid coated seed coating agent and preparation method thereof

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Publication number Priority date Publication date Assignee Title
US20040023802A1 (en) * 2002-05-16 2004-02-05 Monsanto Technology, L.L.C. Increasing plant yield and/or vigor by seed treatment with a neonicotinoid compound

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN102308838A (en) * 2011-09-28 2012-01-11 联保作物科技有限公司 Flowable concentrate for seed coating for insecticidal purpose and disease prevention
CN102326578A (en) * 2011-10-11 2012-01-25 联保作物科技有限公司 Pesticide composition and preparation thereof
CN105052983A (en) * 2015-08-11 2015-11-18 山东农业大学 Seed treating agent and special pesticide composition thereof
CN111449069A (en) * 2020-04-23 2020-07-28 青岛海力源生物科技有限公司 Alginic acid coated seed coating agent and preparation method thereof

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Title
海藻型种子包衣药肥对苗期玉米和水稻生长的影响;丁汉卿;黄素媛;黄昌庆;沈宏;;磷肥与复肥(06);70-72 *

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