CN107114393B - Preparation and application of suspended seed coating agent for preventing and treating cyst nematodes of wheat crops - Google Patents
Preparation and application of suspended seed coating agent for preventing and treating cyst nematodes of wheat crops Download PDFInfo
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- CN107114393B CN107114393B CN201710345558.7A CN201710345558A CN107114393B CN 107114393 B CN107114393 B CN 107114393B CN 201710345558 A CN201710345558 A CN 201710345558A CN 107114393 B CN107114393 B CN 107114393B
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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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- 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
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
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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
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- Pest Control & Pesticides (AREA)
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- Agronomy & Crop Science (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
The invention discloses a preparation and application method of a suspension seed coating agent for preventing and treating cyst nematode disease of wheat crops, which comprises the effective components of abamectin, imidacloprid and difenoconazole, wherein the abamectin accounts for 1-10 percent of the total mass of the preparation, the imidacloprid accounts for 1-20 percent of the total mass of the preparation, and the difenoconazole accounts for 1-10 percent of the total mass of the preparation. Compared with a single abamectin preparation, the compound seed coating agent has obvious synergy on the sporangium nematode of wheat crops, can promote the growth of wheat and improve the crop yield; the seed coating agent has the characteristics of saving medicine, time and labor, reducing pollution and delaying the drug resistance of the cyst nematode to a single agent.
Description
Technical Field
The invention belongs to the technical field of pesticides, and relates to a suspended seed coating agent for preventing and treating wheat cyst nematodes. More specifically, relates to a seed coating agent containing abamectin, imidacloprid and difenoconazole, and the dosage form of the seed coating agent is a suspending agent.
Background
Cyst nematodes, a class of plant-parasitic nematodes, which are a major hazard to cereal crops such as wheat, barley, oats, occur in over 40 countries and regions of europe, china, australia, south africa, india, iran, turkey, and the like. At present, the wheat cyst nematodes spread to 13 provinces (cities) in China, are common in major wheat producing areas such as Henan, Shandong, Anhui and the like, and the disease area is enlarged year by year. The cyst nematodes parasitize the root system of wheat crops, affect the nutrition transportation of the water in the root system and seriously affect the growth and development of the crops, and meanwhile, the mechanical damage of the root system caused by the nematode infection aggravates the occurrence of soil-borne diseases such as root rot and the like, the crop yield is seriously affected, the yield is generally reduced by 20 to 30 percent, and the serious plot can reach more than 70 percent. At present, the chemical agents for preventing and controlling wheat cyst nematodes in China are few in types and are mostly granules, and the prevention and control method has the disadvantages of large application amount, high cost and serious environmental pollution.
Avermectin is an insecticidal nematicide consisting of a family of sixteen-membered macrolactone compounds with similar structures. The action sites of the compound on the nematodes are gamma-aminobutyric acid and chloride ion channels in nerve conduction pathways, inhibit nerve conduction of the nematodes and lead the nematodes to die in a paralytic way. At present, abamectin is a common medicament for preventing and controlling wheat cyst nematodes in production.
Imidacloprid is a nitromethylene systemic insecticide, which acts on an effector of a nicotinic acid acetylcholinesterase receptor of pests to interfere the transmission of a motor nervous system chemical signal, and after the pests contact the insecticide, normal conduction of central nerves is blocked, so that the pests die in a paralytic way.
The difenoconazole is a triazole broad-spectrum bactericide, and the action mechanism of the difenoconazole is to inhibit the activity of fungal lanosterol-14 alpha-demethylase and the biosynthesis of ergosterol, so that the formation of fungal cell membranes is hindered, the structural integrity of the cell membranes is damaged, and the growth of germs is inhibited.
The seed coating agent is a preparation with film forming property, which is formed by combining pesticide, film forming agent and related auxiliary agent and is used for coating seeds. Compared with the traditional soil treatment agent, the seed coating agent has the characteristics of saving medicine, time and labor, reducing pollution and prolonging the lasting period, and is an ideal preparation for preventing and treating the root diseases of crops.
Disclosure of Invention
The purpose of the invention is: the suspending seed coating agent for preventing and treating the wheat cyst nematodes is prepared by compounding the nematicide abamectin, the imidacloprid and the difenoconazole, and compared with a single agent, the compound seed coating agent has good prevention and treatment effects and low dosage, and is a good substitute agent for preventing and treating the wheat cyst nematodes.
The technical scheme provided by the invention is as follows:
a suspended seed coating for preventing and controlling cyst nematode of wheat crops is characterized in that: the effective components comprise abamectin, imidacloprid and difenoconazole.
The seed coating comprises the following raw materials in percentage by mass:
1 to 5 percent of abamectin
4 to 15 percent of imidacloprid
1 to 5 percent of difenoconazole
3 to 10 percent of dispersant
1 to 8 percent of wetting agent
0.1 to 3 percent of stabilizer
0.5 to 5 percent of antifreeze
0.5 to 3 percent of film forming agent
2 to 8 percent of defoaming agent
1 to 3 percent of preservative
1 to 3 percent of colorant
Balance of water
The dispersing agent in the formula is one or more of nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether, tristyrylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyoxyethylene polyoxypropylene ether block copolymer, alkyl naphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, calcium lignosulfonate, polycaproate, sodium lauryl polyoxyethylene ether sulfate, alkyl polyoxyethylene ether sulfonate and alkylphenol polyoxyethylene ether formaldehyde condensate.
The wetting agent is one or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and nekal.
The suspension stabilizer is one or more of xanthan gum, cellulose ether and derivatives thereof, sodium carboxymethyl cellulose, magnesium aluminum silicate, diatomite, bentonite, attapulgite and white carbon black.
The antifreezing agent is one or more of ethylene glycol, glycerol, propylene glycol or urea.
The film forming agent is one or more of acacia, animal glue, pectin, xanthan gum, methyl cellulose, ethyl cellulose, sodium carboxymethyl cellulose, light propyl cellulose, sodium alginate, polyvinyl alcohol, polyethylene glycol, polyethylene pyrrolidone, polyacrylamide or sodium polyacrylate.
The defoaming agent is an organic silicon defoaming agent; the preservative is one or more of industrial formaldehyde, sodium benzoate and potassium sorbate.
The colorant is one or more of acid scarlet, acid red B, Congo red and alkaline rose essence.
Aiming at the current situation of occurrence of sporangium nematode of wheat crops and the problems existing in field control, the abamectin, imidacloprid and difenoconazole are compounded to prepare the suspension seed coating agent which is mainly used for controlling the sporangium nematode of the wheat crops.
The preparation method of the suspension seed coating agent comprises the following steps:
(1) adding the abamectin, the imidacloprid, the difenoconazole, the dispersing agent, the wetting agent, the stabilizing agent, the film forming agent, the antifreezing agent, the preservative, the coloring agent and the supplementary water in a high-shear emulsifying and dispersing machine according to the proportion, and stirring and mixing;
(2) and (3) starting a high-speed shearing machine, shearing at a high speed of 10000r/min for 10-20 minutes, and grinding by using a sand mill until more than 95% of the sample has the grain diameter of 1-5 micrometers to obtain the suspension seed coating agent.
The application method of the seed coating agent comprises the following steps: before wheat crops are sown, the seed coating agent is coated according to the seed ratio of the seed coating agent to wheat crops seeds of 1:200-1:500, and then the seeds are naturally aired and sown.
The invention has the beneficial effects that:
1. the seed coating agent is compounded by three effective components, has obvious synergistic effect compared with a single agent of the nematicide abamectin, and can delay the drug resistance of the nematodes to the single agent;
2. the seed coating agent has obvious control effect on cyst nematodes of wheat crops, and can effectively reduce the number of field cysts;
3. the seed coating agent of the invention is safe for the growth of wheat crops, and can promote the growth of the crops and increase the yield of the crops.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following examples, but the present invention is not limited thereto.
Example 1
Weighing the following raw materials in percentage by mass:
the active ingredient is abamectin 2%
The active ingredient imidacloprid is 8 percent
The active ingredient is 4 percent of difenoconazole
Dispersant triphenylethyl phenol polyoxyethylene ether 3%
Wetting agent sodium dodecyl sulfate 2%
Stabilizer xanthan gum 0.15%
2 percent of antifreezing agent glycol
2 percent of film-forming agent polyvinyl alcohol
1 percent of defoaming agent, namely organic silicon defoaming agent
1 percent of sodium benzoate serving as preservative
Coloring agent acid red B2%
Balance of water
The preparation method comprises the following steps:
weighing the components according to the formula, mixing active ingredients, namely the original drug, the dispersing agent, the wetting agent, the stabilizing agent, the antifreezing agent, the preservative, the film forming agent, the defoaming agent, the preservative, the coloring agent and deionized water into a beaker, starting a high-speed shearing machine for 10-20 minutes, and grinding by using a sand mill until more than 95% of samples have the grain diameter of 1-5 micrometers and the average grain diameter is less than 3 micrometers to obtain the red suspended seed coating.
Example 2
Weighing the following raw materials in percentage by mass:
the active ingredient is abamectin 2%
The active ingredient imidacloprid is 4 percent
The active ingredient is 4 percent of difenoconazole
Dispersing agent octyl phenol polyethenoxy ether 4%
Dispersant alkylphenol polyoxyethylene ether 2%
Stabilizer xanthan gum 0.15%
2 percent of antifreezer polyethylene pyrogallone
2 percent of film-forming agent polyvinyl alcohol
1 percent of defoaming agent, namely organic silicon defoaming agent
Preservative sodium citrate 0.5%
Colorant rose bengal 1.5%
Balance of water
The preparation method comprises the following steps:
the procedure for preparing a seed coating formulation from the above-mentioned raw materials is the same as in example 1.
Example 3
Weighing the following raw materials in percentage by mass:
the active ingredient abamectin is 3%
The active ingredient imidacloprid is 6 percent
The active ingredient is 3 percent of difenoconazole
Dispersant nonyl phenol polyoxyethylene ether 3%
3 percent of dispersant fatty alcohol-polyoxyethylene ether
Wetting agent sodium dodecyl sulfate 2%
Stabilizer cellulose ether 0.1%
2 percent of antifreeze glycerin
2 percent of film-forming agent polyvinyl alcohol
1 percent of defoaming agent, namely organic silicon defoaming agent
Antiseptic potassium sorbate 1.5%
2 percent of colorant acid bright red
Balance of water
The preparation method comprises the following steps:
the procedure for preparing a seed coating formulation from the above-mentioned raw materials is the same as in example 1.
Example 4:
the preparation method comprises the following steps:
weighing the following raw materials in percentage by mass:
the active ingredient abamectin is 3.5 percent
The active ingredient imidacloprid is 8 percent
Active ingredient difenoconazole 2%
5 percent of dispersant phenethyl phenol polyoxyethylene ether
Wetting agent sodium dodecyl sulfate 2%
0.15 percent of sodium carboxymethyl cellulose as stabilizer
Film-forming agent polyvinyl acetate 2%
1 percent of defoaming agent, namely organic silicon defoaming agent
Antiseptic potassium sorbate 1.5%
Colorant alkaline rose essence 2%
The preparation method comprises the following steps:
the procedure for preparing a seed coating formulation from the above-mentioned raw materials is the same as in example 1.
Example 5:
the preparation method comprises the following steps:
weighing the following raw materials in percentage by mass:
the active ingredient is abamectin 2%
The active ingredient imidacloprid is 10 percent
The active ingredient is 4 percent of difenoconazole
Dispersant nonyl phenol polyoxyethylene ether 2%
4 percent of dispersant alkylphenol polyoxyethylene ether
Wetting agent sodium dodecyl sulfate 2%
Stabilizer cellulose ether 2%
Film-forming agent polyvinyl alcohol 1.5%
1 percent of defoaming agent, namely organic silicon defoaming agent
Antiseptic potassium sorbate 1.5%
Colorant alkaline rose essence 2%
Balance of water
The preparation method comprises the following steps:
the procedure for preparing a seed coating formulation from the above-mentioned raw materials is the same as in example 1.
The seed coating agents prepared in the above-mentioned examples 1 to 5 were applied to wheat crops as follows: accurately weighing the seed coating agents of the 5 embodiments, and mixing the seed coating agents with water according to the weight ratio of 1: 1, uniformly mixing the components according to the ratio of medicament (seed coating agent and water): seed = 1: 150, coating; during coating, the seeds and the medicament are uniformly mixed, a seed coating machine can be used under certain conditions, and the seeds are dried in a ventilation place after being coated.
And (3) field efficacy test:
the test method comprises the following steps: the seed coating agent is used for preventing and treating wheat cyst nematodes, the test site is a wheat field with serious occurrence of the wheat cyst nematodes in Yong bridge area of the dormitory city of Anhui province, each agent is treated for 4 times, and the area of each cell is 50m2. The 3% avermectin suspension seed coating agent is prepared by the method and is used as a reference medicament.
And (4) control effect investigation: and (3) calculating relative prevention effect by using the cyst reduction rate in the soil of the test cell after coating treatment and the cyst reduction rate in the soil of the control cell, wherein the prevention effect (%) = (cyst reduction rate in a blank control area-cyst reduction rate in a medicament treatment area)/cyst reduction rate in the blank control area is 100. The control effect is shown in table 1.
Table 1: abamectin-imidacloprid-difenoconazole suspension seed coating agent for preventing and controlling wheat cyst nematode in field
As can be seen from the table 1, compared with a single nematicide abamectin, the compound abamectin, imidacloprid and difenoconazole has obvious synergistic effect on wheat cyst nematodes, and the control effect of the compounded agent degree wheat cyst nematodes is 75.1-85.4%, so that the control effect is obvious.
Wheat growth and yield survey: investigating the emergence rate of the wheat 1 month after sowing; investigating the growth condition of the wheat in the wheat green turning period; and (3) collecting all the wheat in the cell after the wheat is mature, measuring yield, and calculating the yield increase rate of the wheat: yield increase = (treatment zone wheat yield-blank control zone wheat yield)/blank control zone wheat yield 100. The growth and yield of wheat are shown in Table 2.
Table 2: questionnaire table for influence of abamectin, imidacloprid and difenoconazole suspension seed coating agent on growth and yield of wheat
As can be seen from Table 2, the wheat emergence rate of the plot after the seed coating agent treatment in the examples 1-5 has no obvious difference with the control plot, which shows that the seed coating agent is safe to wheat emergence; compared with abamectin single agent and blank control, the seed coating agent in the embodiment 1-5 has obvious growth promoting effect on the growth of wheat in the green turning stage, and the yield is obviously improved.
Claims (1)
1. The application of the suspended seed coating agent for preventing and treating the wheat cyst nematode disease is characterized in that: the suspension seed coating agent is prepared by weighing the following raw materials in percentage by mass: 2% of abamectin, 8% of imidacloprid, 4% of difenoconazole, 3% of triphenylethylphenol polyoxyethylene ether, 2% of sodium dodecyl sulfate, 0.15% of xanthan gum, 2% of ethylene glycol, 2% of polyvinyl alcohol, 1% of an organic silicon defoamer, 1% of sodium benzoate, 2% of acid red B and the balance of water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710345558.7A CN107114393B (en) | 2017-05-17 | 2017-05-17 | Preparation and application of suspended seed coating agent for preventing and treating cyst nematodes of wheat crops |
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| CN201710345558.7A CN107114393B (en) | 2017-05-17 | 2017-05-17 | Preparation and application of suspended seed coating agent for preventing and treating cyst nematodes of wheat crops |
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| CN107114393A CN107114393A (en) | 2017-09-01 |
| CN107114393B true CN107114393B (en) | 2021-03-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101356918B (en) * | 2008-09-24 | 2012-01-25 | 中国农业科学院植物保护研究所 | Microcapsule suspension seed-coating agent |
| CN101444203A (en) * | 2008-11-17 | 2009-06-03 | 湖南万家丰科技有限公司 | Compound formulation for paddy pest control |
| CN102334500B (en) * | 2011-10-31 | 2014-10-22 | 联保作物科技有限公司 | Insect-killing and disease-preventing suspension seed coating formulation |
| CN102342284B (en) * | 2011-11-11 | 2014-08-13 | 联保作物科技有限公司 | Sterilization disease-resistant composition and suspension seed coating agent thereof |
| CN106489938A (en) * | 2016-08-30 | 2017-03-15 | 江西天人生态股份有限公司 | A kind of seed coat agent and its preparation method and application |
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