CN111345310A - Insecticidal and bactericidal composition, preparation and application thereof - Google Patents
Insecticidal and bactericidal composition, preparation and application thereof Download PDFInfo
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- CN111345310A CN111345310A CN201811562062.6A CN201811562062A CN111345310A CN 111345310 A CN111345310 A CN 111345310A CN 201811562062 A CN201811562062 A CN 201811562062A CN 111345310 A CN111345310 A CN 111345310A
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- pyraclostrobin
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- guadipyr
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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
- 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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Abstract
The invention relates to the technical field of pesticides, and particularly relates to an insecticidal and bactericidal composition, a preparation and application thereof. The active ingredients of the composition are guadipyr and pyraclostrobin, and the two active ingredients are reasonably compounded, so that the composition can treat insect pests and diseases at the same time, and has an obvious synergistic effect. The medicine has less times of administration, multiple action targets and low resistance risk. In addition, the environment-friendly insecticidal and bactericidal composition has good environmental compatibility, low use cost and good control effect.
Description
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to an insecticidal and bactericidal composition, a preparation and application thereof.
Background
The crops such as fruit trees, rice, vegetables and the like in China suffer serious losses due to diseases and insect pests every year, and the use of the insecticidal bactericide for preventing and treating the diseases and insect pests has important significance for protecting the normal growth of the crops. Especially in situations where fungi and/or pests are susceptible to mixing or where resistance to currently known products has developed or is at risk of developing resistance, there is a greater need to find a more effective method of control or prevention. The most easily-generated problem of preventing and treating the diseases and insect pests is the generation of drug resistance, secondly, most importantly, the prevention and treatment functions are multiple, the prevention and treatment effect is excellent, however, the existing pesticides are single, in the aspect of preventing and treating the diseases and insect pests, farmers need to take medicaments for multiple times to respectively prevent and treat different diseases and insect pests, the labor force is increased, the medicament cost is increased, the effect of preventing and treating the diseases every time is not comprehensive and ideal enough, the using amount is large every time, the pesticides are frequently taken, the pollution to the environment is large, the pesticide residue of crops is large, and the human health is not facilitated.
For example, CN101087531B discloses an insecticide based on selected neonicotinoids and strobilurins, which is compounded with neonicotinoids (one selected from clothianidin, imidacloprid, thiacloprid, dinotefuran, acetamiprid, nitenpyram and thiamethoxam) and at least one selected from strobilurin fungicides (picoxystrobin, pyraclostrobin, dimoxystrobin, metominostrobin and orysastrobin). Wherein the neonicotinoid insecticide component threatens the survival of pollinating insects such as bees and the like, and is not beneficial to ecological environmental protection. CN108184893A discloses a compound seed coating agent containing pyraclostrobin, shenqinmycin and imidacloprid, the effective components of the compound seed coating agent are pyraclostrobin, shenqinmycin and imidacloprid, the mass ratio of pyraclostrobin, shenqinmycin and imidacloprid is (1-20): 0.1-6: 5-60. The preparation has single dosage form, can only treat seeds, has narrow control range, and the imidacloprid component has high toxicity to bees. CN105265471A discloses a disease-resistant and insect-resistant composition containing ganoderma lucidum polysaccharide and clothianidin. It comprises effective components, auxiliary agents and fillers; the effective components of the composition comprise ganoderan, pyraclostrobin and clothianidin, and are applied to disease control of corn, cotton, wheat and the like. Has limited control range and contains clothianidin with high toxicity to bees. CN108464309A discloses a seed treatment composition containing pyraclostrobin, fluopyram and chlorpyrifos: 2-10% of pyraclostrobin, 2-10% of fluopyram, 5-25% of chlorpyrifos, 0.1-3% of dispersant, 0.1-2.5% of thickener, 5-12% of emulsifier, 0.2-3% of antifreeze, 0.2-2.8% of colorant, 0.1-2% of defoamer, 0.5-3.5% of film forming agent and the balance of solvent. The formulation is single, only can treat seeds, and the prevention range is narrow. CN 108541709A discloses a seed coating agent composition containing prothioconazole, pyraclostrobin and dinotefuran, which is mainly used for coating seeds of crops such as peanuts, corns and wheat, and the processed dosage form is a suspension seed coating agent for preventing and treating seedling diseases and insect pests of various crops. The formulation is single, only can treat seeds, and the prevention range is narrow. CN108308190A discloses a bactericidal composition containing pyraclostrobin and quinolinone, wherein the mass part ratio of pyraclostrobin to quinolinone is 1-20: 30-1, and the bactericidal composition is suitable for preventing and treating grape downy mildew. Can only prevent and treat diseases and has narrow application range.
Neonicotinoid insecticides are the insecticides which grow the fastest in the world agricultural chemical market in recent years, live at the first of various insecticide markets, the environmental problems brought by the neonicotinoid insecticides are more and more concerned by people, such as the problems of easy generation of resistance and phytotoxicity after long-term use, and high toxicity to bees, and more evidences show that neonicotinoid insecticides threaten the survival of pollinating insects such as bees and lead to the reduction of bee habitats and population quantity, all countries in the world pay high attention, and some countries adopt forbidden measures, such as: in 8 months 2012, the department of french agriculture banned the use of thiamethoxam for the treatment of oilseed rape seed and called for the complete ban of thiamethoxam within the european union; three neonicotinoid insecticides imidacloprid, thiamethoxam and clothianidin are temporarily forbidden in European Union beginning 12 months in 2013; against the potential risk of neonicotinoid pesticides to bees, countries in the united states, canada, brazil, etc. have begun to follow up with the examination of neonicotinoid insecticides; the ministry of agriculture in China also organizes the risk analysis workshop of neonicotinoid insecticides on bees in China, emphasizing that the influence on bees is more concerned in the product registration review. Therefore, the development of low-toxicity alternative insecticide varieties safe to bees is a development trend at home and abroad, and has great ecological and environmental protection significance.
The guadipyr has the chemical name of 1-nitro-3- [ (6-chloropyridine-3-yl) methyl ] -4-pentamethylene aminoguanidine, belongs to a nitro aminoguanidine compound, is a high-efficiency, low-toxicity and low-residue all-new pesticide, constructs the active structures of a neonicotinoid pesticide and a semicarbazone pesticide into the same molecule, and has the structural characteristics of the neonicotinoid pesticide and a sodium ion channel inhibitor pesticide, so that the insecticidal spectrum of the two pesticides is combined, the application range is wide, the insecticidal spectrum has the characteristic of multiple action targets, and the speed of generating the drug resistance of pests is greatly reduced. The product has good control effect on various pests such as aphids, plant hoppers, cotton bollworms and the like. The guadipyr has a unique action mechanism, so that the guadipyr has an obvious control effect and a longer lasting period compared with a neonicotinoid insecticide, has low toxicity to beneficial organisms such as bees, is 10800mg/L and 51.82 mu g/bee respectively for LC50 of acute ingestion (48h) and acute contact killing (48h) of the bees, is far lower than the neonicotinoid insecticide (for example, imidacloprid is 11.99mg/L and 0.0723 mu g/bee respectively), and overcomes the disadvantage of biotoxicity of the neonicotinoid insecticide.
Pyraclostrobin is a strobilurin fungicide developed by BASF, belongs to a mitochondrial respiration inhibitor, and can not enable mitochondria to generate and provide energy required by normal metabolism of cells, and finally leads to cell death. Pyraclostrobin has strong capability of inhibiting germ spore germination, has good inhibition effect on hypha growth in leaves, has long lasting period, and has potential therapeutic activity. Pyraclostrobin has the advantages of protective effect, therapeutic effect, systemic conductivity and rain erosion resistance, has a wide application range, and is widely used for preventing and controlling various diseases of more than 100 crops at present. The bactericidal composition has good activity on almost all fungal diseases (ascomycetes, basidiomycetes, oomycetes and fungi imperfecti), such as powdery mildew, leaf blight, red spot, net blotch and stinking smut of wheat, rice blast and sheath blight of rice, downy mildew, epidemic disease and the like. Pyraclostrobin can induce physiological change of many crops, especially grains, besides direct action on pathogenic bacteria, for example, it can enhance activity of nitrate (nitrification) reductase, thereby improving nitrogen absorption of crops in rapid growth stage. At the same time, it can reduce the biosynthesis of ethylene, thus delaying crop senescence. When the plant is attacked by virus, it can accelerate the formation of resistin, and the synthesis of resistin is the same as that of salicylic acid compound in plant. Pyraclostrobin can improve crop yield by controlling secondary disease and relieving stress from abiotic factors even in the absence of disease in plants.
Although a lot of preparations are prepared by combining the pesticide and the bactericide in the prior art, no report on the compound use of the E-imidacloprid guanidine and the pyraclostrobin is found.
Disclosure of Invention
In view of the above, the invention provides an insecticidal and bactericidal composition with good insecticidal and bactericidal effects, less drug use times and low resistance risk, a preparation and use thereof.
The invention provides an insecticidal and bactericidal composition which comprises guadipyr and pyraclostrobin.
The guadipyr belongs to a nitroaminoguanidine compound, is a high-efficiency, low-toxicity and low-residue all-new pesticide, has the structural characteristics of both the neonicotinoid pesticide and the sodium ion channel inhibitor pesticide, has the insecticidal spectrum of the two pesticides, has a wide application range, has the characteristic of multiple action targets, and can greatly reduce the speed of the drug resistance of pests. Low toxicity to beneficial organisms such as bees.
Pyraclostrobin is strobilurin fungicide, belongs to mitochondrial respiration inhibitor, and can control most diseases of ascomycetes, basidiomycetes, deuteromycetes, oomycetes and the like. Has strong inhibiting effect on spore germination and growth of leaf mycelium, and has protective and therapeutic activity. Has permeability and local systemic activity, long lasting period, rain wash resistance and wide application range.
The two effective components, namely the guadipyr and the pyraclostrobin, have different action mechanisms and are compounded, and the embodiment of the invention shows that the pesticide composition has certain complementary action and synergistic action in a reasonable range, can reduce the use amount of pesticide active ingredients and improve the control effect. The mass ratio of the guadipyr to the pyraclostrobin is 1: 50-50: 1, preferably 1: 20-20: 1, and more preferably 1: 10-10: 1.
The invention also provides application of the composition in preventing and treating crop diseases and insect pests. Preferably, the crops are rice, wheat, vegetables, bananas, watermelons, corns, peanuts, rapes, fruit trees and ornamental plants. Wherein the vegetables include cucumber, cabbage, beans, potato, tomato, etc.
The insect pests are rice planthopper, stem borer, leafhopper, aphid, noctuid and cotton bollworm; the diseases are fungal diseases, specifically rice sheath blight, rice blast, wheat powdery mildew, leaf blight, cucumber downy mildew, bean leaf spot, potato late blight, banana leaf spot, strawberry powdery mildew, watermelon anthracnose, banana scab, apple tree brown spot, citrus resiniferous diseases, peanut leaf spot and corn northern leaf spot.
The invention also provides an insecticidal and bactericidal preparation which comprises the insecticidal and bactericidal composition.
The mass percentage of the insecticidal and bactericidal composition in the insecticidal and bactericidal preparation is preferably 2-80%, and more preferably 10-50%.
The insecticidal and bactericidal preparation provided by the invention also comprises auxiliary materials acceptable in the aspect of agriculture and pharmacy.
A person skilled in the art can prepare any agriculturally acceptable dosage form by selecting auxiliary materials according to a method known in the art, and the preferred dosage form is wettable powder, suspending agent, water dispersible granules, dry powder, suspoemulsion, suspended seed coating agent and seed treatment dispersible powder.
The adjuvant may be one well known to those skilled in the art and suitable for use in pesticide formulations, and the present invention preferably includes one or a mixture of two or more of a dispersant, a wetting agent, an emulsifier, a spreader, a stabilizer, a thickener, an antifreeze, a disintegrant, a binder, an antifoaming agent, a film-forming agent, a colorant, a filler and a solvent.
Preferably, the dispersant is selected from one or more of lignosulfonate, sodium naphthalene sulfonate formaldehyde condensate, formaldehyde condensate sulfate, polycarboxylate, alkylbenzene sulfonate, alkylphenol polyoxyethylene phosphate, alkylphenol polyoxyethylene ether and fatty acid polyoxyethylene ester.
The wetting agent is selected from one or more of sodium dodecyl sulfate, calcium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, lignosulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, fatty alcohol sulfate, nonylphenol polyoxyethylene ether, nekal BX, Chinese honeylocust fruit powder and tea seed cake powder.
The emulsifier is selected from one or more of calcium alkyl benzene sulfonate, benzyl dimethyl phenol polyoxyethylene ether, phenyl phenol polyoxyethylene ether, alkylphenol formaldehyde resin polyoxyethylene ether, phenethyl phenol polyoxyethylene polypropylene ether, tween series and span series.
The spreader is one or more of polyvinyl alcohol, alkyl diphenyl ether disulfonic acid sodium, polytrisiloxane and triethanolamine oleate.
The stabilizer is epoxidized vegetable oil, preferably one or more of epoxidized soybean oil and epoxidized linseed oil.
The thickening agent is selected from one or more of gelatin, xanthan gum, polyethylene glycol and polyvinyl alcohol.
The antifreeze is selected from one or more of ethylene glycol, propylene glycol, glycerol, sorbitol, urea and polyethylene glycol.
The disintegrating agent is one or more selected from bentonite, ammonium sulfate, aluminum chloride, urea, magnesium chloride and glucose.
The adhesive is selected from one or more of diatomite, organic bentonite, cyclodextrin, rosin, starch, PVA and sodium carboxymethyl (ethyl) cellulose.
The defoaming agent is selected from one or more of organic silicone oil, ethanol, epoxidized soybean oil, silicone compounds, C10-C20 saturated fatty acid compounds and C8-210 fatty alcohol compounds.
The film forming agent is one or more selected from polyvinyl alcohol, polyethylene glycol, gelatin, Arabic gum, xanthan gum, high molecular organic compounds and the like.
The filler is selected from one or more of white carbon black, corn starch, kaolin, diatomite, sodium sulfate, ammonium sulfate bentonite, attapulgite and light calcium carbonate.
The solvent is selected from one or more of turpentine-based oil, petroleum ether, isopropanol, ethanol, ethyl acetate, soybean oil, methyl oleate, white oil and turpentine methyl naphthalene higher fatty hydrocarbon oil.
The invention also provides a method for treating seeds, which comprises the step of contacting seeds and a medium for sowing the seeds with the insecticidal and bactericidal preparation. The term "seed-sowing medium" refers to any growing environment suitable for the seed to grow plants and/or seedlings, such as soil and other growing media. The insecticidal and bactericidal composition preparation is preferably a suspended seed coating agent which consists of the following components:
the insecticidal and bactericidal composition comprises 5-50% of an insecticidal and bactericidal composition, 2-10% of a dispersing agent, 2-10% of a wetting agent, 0.1-5% of a film forming agent, 1-6% of an antifreeze agent, 0.1-5% of a coloring agent, 1-5% of a thickening agent, 0-2% of a defoaming agent, 0-2% of an adhesive and the balance of water.
The technicians in the field can also add proper plant growth regulator and trace element fertilizer into the suspension seed coating agent according to the characteristics of different crops to promote the growth and the stress resistance.
The insecticidal and fungicidal preparations according to the invention can be used for controlling plant pests and diseases, for preventing or destroying fungi and pests which occur on plants or on plant organs of different useful plants (fruit trees, flowers, leaves, stems, tubers, roots), after which the plant organs which continue to grow are not contaminated by these fungi and pests, or for post-harvest or seed-dressing applications, or for treating plant propagation material, in particular seeds.
Preferably, the insecticidal and bactericidal preparation is used for controlling fungal diseases and pests of rice, wheat, vegetables (such as cucumbers, cabbages, beans, potatoes and tomatoes), bananas, watermelons, corns, peanuts, rapes, fruit trees and ornamental plants.
Preferably, the pests are rice planthopper, stem borer, leafhopper, aphid, noctuid, cotton bollworm and the like.
Preferably, the diseases comprise rice sheath blight, rice blast, wheat powdery mildew, leaf blight, cucumber downy mildew, bean leaf spot, potato late blight, banana leaf spot, strawberry powdery mildew, watermelon anthracnose, banana scab, apple tree brown spot, citrus resiniferous disease (sand-pick disease), peanut leaf spot, corn northern leaf spot and the like.
The method of using the pesticidal and bactericidal agent in the present invention is not particularly limited, and a method generally used in agriculture, preferably a method of treating seeds or spraying, may be used depending on the formulation. Before sowing, the seeds are treated by the seed treatment preparation, the active ingredients of the E-imidacloprid guanidine and the pyraclostrobin have mutual synergistic effect, can act from different target points at the same time, provide all-round protection for the seeds, have good environmental compatibility and low toxicity, and are biologically safe to people, livestock, natural enemies and the like; after seedling emergence or at the time of field planting and at the initial stage of disease occurrence, the pesticide can be sprayed once, so that the plant diseases and insect pests can be effectively prevented and treated, and the lasting period is long.
The invention has the beneficial effects that:
(1) the active ingredients of the composition, namely the guadipyr and the pyraclostrobin, show good complementary action in a specific range, have multi-action targets, can treat insect pests and diseases simultaneously, have obvious synergistic action, have field control effect obviously higher than that of a single agent, and provide a new choice for treating the insect pest groups with drug resistance of the existing insecticide/bactericide.
(2) The active ingredients of the guadipyr and the pyraclostrobin in the insecticidal and bactericidal composition provided by the invention are synergistic, so that the application frequency can be reduced, the application cost of crop pest control can be effectively reduced, and the resistance risk is low.
(3) The insecticidal and bactericidal composition has good safety to crops, has low toxicity to beneficial organisms such as bees and the like, and can be used as an ideal substitute of neonicotinoid insecticides with high toxicity to bees.
Detailed Description
The invention discloses a pesticidal and bactericidal composition, a preparation and application thereof, and a person skilled in the art can realize the pesticidal and bactericidal composition by properly improving process parameters by referring to the content. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
The insecticidal and bactericidal composition, the preparation and the raw materials, the auxiliary agents and the fillers used in the application of the insecticidal and bactericidal composition can be purchased from the market.
The invention is further illustrated by the following examples:
example 1: 51% Guadipyr-pyraclostrobin seed treatment dispersible powder (active ingredient 50:1)
The pesticide composition comprises 50% of penta-imidacloprid guanidine, 1% of pyraclostrobin, 2% of sodium dodecyl sulfate, 1% of sodium lignosulfonate, 3% of carboxyethyl cellulose, 0.5% of colorant, 5% of white carbon black and organic diatomite, wherein the total content is 100%. The raw materials are mixed according to a conventional method for preparing the seed treatment dispersible powder to prepare 51 percent of the guadipyr-guadipyr seed treatment dispersible powder.
Example 2: 31% E Ping guanidine-pyraclostrobin suspoemulsion (active ingredient 30:1)
30% of penta-imidacloprid guanidine, 1% of pyraclostrobin, 8% of sodium dodecyl benzene sulfonate, 5% of nekal, 3% of polyethylene glycol, 5% of alkylphenol polyoxyethylene, 0.3% of silicone compound and the balance of deionized water to 100%. The raw materials are mixed according to a conventional method for preparing the suspoemulsion to prepare the 31 percent penta imidacloprid guanidine pyraclostrobin suspending agent.
Example 3: 21% guadipyr-pyraclostrobin emulsion in water (active ingredient 20:1)
20% of penta-imidacloprid guanidine, 1% of pyraclostrobin, 3% of calcium alkylbenzene sulfonate, 4% of phenethyl phenol polyoxyethylene polypropylene ether, 4% of alkylphenol formaldehyde resin polyoxyethylene ether, 2% of polyethylene glycol and 100% of deionized water. The 21% aqueous emulsion of the guadipyr and the pyraclostrobin is prepared from the raw materials by a conventional method for preparing the aqueous emulsion.
Example 4A 44% Guadipyr-pyraclostrobin suspension seed coating (active ingredient 10:1)
The pesticide composition comprises 40% of penta-imidacloprid guanidine, 4% of pyraclostrobin, 4% of alkylphenol polyoxyethylene phosphate, 6% of alkylphenol polyoxyethylene, 5% of polyvinyl alcohol, 6% of ethylene glycol, 1% of colorant, 1% of xanthan gum, 3% of sodium carboxymethylcellulose, 0.4% of epoxidized soybean oil, 0.5% of starch and the balance of deionized water to 100%. The raw materials are mixed according to a conventional method for preparing the suspending agent seed coating agent to prepare the 44% E-imidacloprid guanidine-pyraclostrobin suspending seed coating agent.
Example 5% Guadipyr-pyraclostrobin suspension seed coating (active ingredient 4:1)
4% of guadipyr, 1% of pyraclostrobin, 5% of alkylphenol polyoxyethylene, 5% of calcium dodecyl benzene sulfonate, 10% of polyethylene glycol, 10% of propylene glycol, 0.5% of a colorant, 5% of xanthan gum, 4% of sodium carboxymethylcellulose and the balance of deionized water to 100%. The raw materials are mixed according to a conventional method for preparing the suspending agent seed coating agent to prepare the 5 percent penta imidacloprid guanidine pyraclostrobin suspending seed coating agent.
Example 6: 80% guadipyr-pyraclostrobin water dispersible granule (active ingredient 5:3)
The pesticide composition comprises the following components, by weight, 50% of penta-imidacloprid guanidine, 30% of penta-imidacloprid guanidine, 5% of sodium lignosulfonate, 2% of ammonium sulfate, 2% of polycarboxylate, 2% of starch and light calcium carbonate, wherein the balance is 100%. The raw materials are mixed according to a conventional method for preparing the water dispersible granule to prepare the 80% penta-imidacloprid guanidine pyraclostrobin water dispersible granule.
Example 7: 2% E imidacloprid guanidine-pyraclostrobin emulsion in water (active ingredient 1:1)
1% of penta imidacloprid guanidine, 1% of pyraclostrobin, 6% of benzyl dimethyl phenol polyoxyethylene ether, 8% of phenyl phenol polyoxyethylene ether, 10% of petroleum ether and the balance of rosin-based oil to 100%. The raw materials are mixed according to a conventional method for preparing missible oil to prepare the 2 percent aqueous emulsion of the guadipyr and the pyraclostrobin.
Example 8 20% Guadipyr-pyraclostrobin suspension seed coating (active ingredient 1:1)
The pesticide composition comprises, by weight, 10% of penta-imidacloprid guanidine, 10% of pyraclostrobin, 5% of alkylphenol polyoxyethylene phosphate, 6% of alkylphenol polyoxyethylene, 3% of polyvinyl alcohol, 2% of propylene glycol, 0.1% of a colorant, 2% of xanthan gum, 2% of sodium carboxymethylcellulose, 0.3% of epoxidized soybean oil, 0.5% of starch and the balance of deionized water to 100%. The raw materials are mixed according to a conventional method for preparing the suspending agent seed coating agent to prepare the 20 percent penta imidacloprid guanidine pyraclostrobin suspending seed coating agent.
Example 9 30% Guadipyr-pyraclostrobin suspension concentrate (active ingredient 1:2)
The pesticide composition comprises, by weight, 10% of guadipyr, 20% of pyraclostrobin, 6% of saponin powder, 5% of sodium lignosulfonate, 1% of silicone oil, 2% of ethylene glycol, 5% of sodium carboxymethylcellulose and the balance of deionized water to 100%. The raw materials are mixed according to a conventional method for preparing the suspending agent to prepare the 30% E-pyrad guanidine-pyraclostrobin suspending agent.
Example 10 18% Guadipyr-pyraclostrobin suspension concentrate (active ingredient 1:5)
3% of penta-imidacloprid guanidine, 15% of pyraclostrobin, 5% of saponin powder, 5% of sodium lignosulfonate, 1% of organic silicone oil, 2% of ethylene glycol, 4% of sodium carboxymethylcellulose and the balance of deionized water to 100%. The raw materials are mixed according to a conventional method for preparing the suspending agent to prepare the 18 percent E-imidacloprid guanidine-pyraclostrobin suspending agent.
Example 11: 44% guadipyr-pyraclostrobin wettable powder (active ingredient 1:10)
4% of penta-imidacloprid guanidine, 40% of pyraclostrobin, 5% of tea seed powder, 2% of ethanol, 5% of sodium lignosulfonate and 100% of diatomite. The raw materials are mixed according to a conventional method for preparing wettable powder, the mixture is crushed to a certain fineness and then is mixed uniformly to form a product, and 44% of the guadipyr-pyraclostrobin wettable powder is obtained.
Example 12 Water dispersible granules of 63% Guadipyr-pyraclostrobin (active ingredient 1:20)
3% of guadipyr, 60% of pyraclostrobin, 5% of sodium lignosulfonate, 3% of ammonium sulfate, 4% of polycarboxylate, 2% of starch and 100% of kaolin. The 63% penta imidacloprid guanidine-pyraclostrobin water dispersible granules are prepared by mixing the raw materials according to a conventional water dispersible granule preparation method.
Example 13: 31% Wubichonggua-pyraclostrobin dry powder (active ingredient 1:30)
1% of penta-imidacloprid guanidine, 30% of pyraclostrobin, 10% of carboxymethyl cellulose, 4% of sodium dodecyl sulfate, 1% of sodium lignin sulfonate, 3% of polyethylene glycol, 5% of white carbon black and the balance of talcum powder to 100%. The raw materials are crushed and mixed according to a conventional method for preparing a dry powder to prepare the 31 percent penta imidacloprid guanidine pyraclostrobin dry powder.
Example 14: 76.5% guadipyr-guadipyr wettable powder (active ingredient 1:50)
1.5% of penta-imidacloprid guanidine, 75% of pyraclostrobin, 4% of tea seed powder, 2% of organic silicone oil, 4% of sodium lignosulfonate and diatomite which are added to make up 100%. The raw materials are mixed according to a conventional method for preparing wettable powder, the mixture is crushed to a certain fineness and then is mixed uniformly to form a product, and 76.5 percent of the penta imidacloprid guanidine pyraclostrobin wettable powder is obtained.
Example 15: indoor toxicity determination method for compounding of guadipyr and pyraclostrobin
1. Joint toxicity test of guadipyr and pyraclostrobin in different ratios
1.1 test agent
96% of penta-imidacloprid guanidine technical, 97.5% of pyraclostrobin technical, and mixed preparation of penta-imidacloprid guanidine and pyraclostrobin in different proportions
1.2 test targets
Rice blast, wheat powdery mildew, cabbage aphid, rice planthopper, rice leaf roller
1.3 indoor toxicity test of rice blast: under the aseptic operation condition, quantitatively adding the pre-melted sterile culture medium into an aseptic conical flask, quantitatively sucking liquid medicines from low concentration to high concentration in sequence, respectively adding into the conical flasks, and fully shaking up. The aliquots were then poured into 9cm diameter dishes with 3 replicates per concentration. And (3) cutting the bacterial cake from the edge of a bacterial colony by using a puncher with the diameter of 5mm under aseptic conditions, inoculating the bacterial cake to the center of a drug-containing flat plate by using an inoculator, enabling the hypha surface to face upwards, covering a dish cover, culturing at a proper temperature, setting a clear water blank control, and observing the result after 48 hours. The diameter of each colony was measured perpendicularly by the cross method once and averaged. And calculating the hypha growth inhibition rate of each treatment concentration on the pathogenic bacteria according to the investigation result.
1.4 indoor toxicity determination of rice leaf roller: the volume of the capillary micro dropper is 1.0 microliter by adopting a capillary micro dropping method. Dripping the medicinal liquid on the back of Chilo suppressalis larva one by a micro dropper, treating 30 larvae per concentration, putting a culture dish with a diameter of 9cm into every 5 larvae, and placing a small amount of feed in the dish for feeding. Clean water was also used as a control. The treated larvae were kept in the rearing room and checked for mortality after 48 h. Data were statistically processed using SPSS software.
1.5 indoor virulence determination of rice planthopper: the method is the same as 1.4.
1.6 determination of indoor toxicity of cabbage aphid: the method is the same as 1.4.
1.7 determination of the indoor toxicity of wheat powdery mildew: the method is the same as 1.3.
The results of the above indoor toxicity tests are shown in Table 1.
TABLE 1 virulence determination results for guadipyr and pyraclostrobin
As can be seen from Table 1, the combination of the guadipyr and the pyraclostrobin according to the ratio of 1: 10-20: 1 has obvious synergistic effect on the control effects of rice blast, wheat powdery mildew, cabbage aphid, rice planthopper and rice leaf roller, and the synergistic effect is shown in that LC50 and EC50 are obviously reduced, so that the synergistic effect is especially obvious especially at the ratio of 1: 10-10: 1, and the combination of the guadipyr and the pyraclostrobin has obvious synergistic effect.
Example 16: pesticide effect test of compounding of guadipyr and pyraclostrobin
1. The pesticide effect test for preventing and controlling rice blast comprises the following steps:
the compound preparation of the embodiment and single agent of each component are used for carrying out field efficacy test. Selecting windless and rainless weather for testing, wherein rainless weather exists in the whole investigation stage, and the rice blast is taken as a test object. The application method adopts diluted spray (application in the early stage of onset of disease), and a control test is set. And (5) the rice blast disease condition and calculating the control effect. The control effect is calculated according to the following formula:
disease grading criteria are as follows:
level 0: the whole plant is disease-free;
level 1: the fourth leaf and the leaf sheaths and leaves below the fourth leaf (sword leaf is taken as the first leaf);
and 3, level: the third leaf and the leaf sheaths and leaves below the third leaf are attacked;
and 5, stage: the second leaf and the leaf sheaths and leaves below the second leaf are attacked;
and 7, stage: attack of Jianye leaf and the leaf sheaths and leaves below the Jianye leaf;
and 9, stage: the whole plant is attacked and withered in advance.
The drug effect calculation method comprises the following steps: according to the investigation result, the disease index and the prevention effect are calculated according to the following formula.
In the formula: CK (CK)0、CK1Disease indexes before and after drug application in the blank control area are respectively; PT0、PT1The disease indexes before and after the medicine treatment area respectively.
TABLE 2 the control effect of the guadipyr-pyraclostrobin composition on rice blast
As can be seen from the table 2, the guadipyr is ineffective to the rice blast, but the combination of the guadipyr and the pyraclostrobin can effectively prevent the rice blast, the prevention effect is better than that of a single agent, and no phytotoxicity is caused to target crops in the application range of the test.
2. The pesticide effect test for preventing and controlling rice planthopper:
the compound preparation of the embodiment and single agent of each component are used for carrying out field efficacy test. Selecting windless and rainless weather for testing, wherein no rainfall exists in the whole investigation stage, and rice planthoppers are used as test objects. The diluted spray (application in the early stage of onset) method is adopted for application, a control test is set, rice planthopper is investigated, and the control effect is calculated. The control effect is calculated according to the following formula:
the control effect (%) - (1-T)aCb/TbCa)×100％
In the formula: t isaNumber of individuals surviving control in the treatment area; t isbNumber of individuals surviving before control for treatment area; caNumber of individuals surviving control; caNumber of individuals surviving before control.
The test results are as follows:
TABLE 3 the control effect of the E-pyraclostrobin guanidine-pyraclostrobin composition on rice planthopper
As can be seen from Table 3, pyraclostrobin is ineffective to rice planthopper, but the E-pyraclostrobin guanidine and pyraclostrobin can effectively prevent and treat the rice planthopper after being compounded, the prevention and treatment effect is superior to that of a single agent, and no phytotoxicity is caused to target crops in the experimental application range.
3. The field efficacy test of the seed treatment preparation comprises the following steps:
the embodiment, the comparative example and the clear water control are used for carrying out the efficacy test for preventing and treating the rice sheath blight disease, and the emergence rate and the disease rate are used for measuring the control degree of the medicament on the rice sheath blight disease. The field test needs to be arranged in the disease-affected areas of the past year, the cultivation conditions (soil type, fertilizer, sowing period, growth stage and crop plant row spacing) of all test districts need to be uniform and consistent, and the management level is consistent. The examples, comparative examples (18% pyraclostrobin suspended seed coating) and clear water controls were set up and repeated 4 times per treatment in random block arrangements. Each treatment required the seeds to be uniformly coated with the agent, and the application amount of the agent active ingredient was the same for each 1kg of seeds in the examples and comparative examples. And (4) investigating twice, namely the first investigation, namely investigating the seedling emergence conditions of quantitative sowing rows in all the districts and calculating the seedling emergence rate when aligning seedlings in the control districts by clear water. And (4) second investigation, namely investigating the number of plants with diseases of all cells when clear water contrasts the cells to have obvious symptoms, sampling five points on the diagonal of each cell, surveying and connecting 5 clusters and 25 clusters at each point, recording the total number of plants and the number of plants with diseases, and calculating the plant disease rate and the prevention and treatment effect. The formula is as follows.
TABLE 4 contrast table for emergence rate of first investigation after seed dressing and sowing with medicament
TABLE 5 comparison table for calculating disease and plant rate in second investigation after seed dressing and sowing with medicament
According to the embodiment, the comparative example and the clear water, compared with seed dressing treatment, of the invention, the emergence rate of seeds and the control effect on rice sheath blight can be seen, and under the condition that the using amounts of the effective components are the same, the emergence rate and the control effect on rice sheath blight are obviously higher than those of a single agent. Compared with a single agent, the dosage can be obviously reduced, the environmental pollution is reduced, and the resistance risk is reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The insecticidal and bactericidal composition is characterized by comprising guadipyr and pyraclostrobin.
2. The insecticidal and bactericidal composition as claimed in claim 1, wherein the mass ratio of the guadipyr to the pyraclostrobin is 1: 50-50: 1.
3. The insecticidal and bactericidal composition as claimed in claim 1, wherein the mass ratio of the guadipyr to the pyraclostrobin is 1: 20-20: 1.
4. The use of the insecticidal and fungicidal composition according to any one of claims 1 to 3 for controlling crop pests.
5. The use according to claim 4, wherein the crop is rice, wheat, vegetables, bananas, watermelons, corn, peanuts, rape, fruit trees, ornamental plants.
6. The use according to claim 5, wherein the insect pests are rice planthoppers, borers, leafhoppers, aphids, noctuids and cotton bollworms; the diseases comprise rice sheath blight, rice blast, wheat powdery mildew, leaf blight, cucumber downy mildew, bean leaf spot, potato late blight, banana leaf spot, strawberry powdery mildew, insect and watermelon anthracnose, banana scab, apple tree brown spot, citrus resiniferous disease, peanut leaf spot and corn northern leaf spot.
7. An insecticidal and bactericidal preparation comprising the insecticidal and bactericidal composition according to any one of claims 1 to 3.
8. The insecticidal and bactericidal preparation as claimed in claim 7, wherein the insecticidal and bactericidal composition is present in the insecticidal and bactericidal preparation in an amount of 2 to 80% by weight.
9. The insecticidal and bactericidal preparation according to claim 7, wherein the dosage form of the insecticidal and bactericidal preparation is wettable powder, suspending agent, water dispersible granule, dry powder, suspoemulsion, suspended seed coating agent or seed treatment dispersible powder.
10. The insecticidal and bactericidal formulation as claimed in claim 9, wherein the suspended seed coating agent consists of the following components:
5-50% of insecticidal and bactericidal composition, 2-10% of dispersing agent, 2-10% of wetting agent, 0.1-5% of film forming agent, 1-6% of antifreeze agent, 0.1-5% of colorant, 1-5% of thickening agent, 0-2% of defoaming agent, 0-2% of adhesive and the balance of water.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102812964A (en) * | 2012-09-06 | 2012-12-12 | 中国农业大学 | Pesticide composition containing thiacloprid and validamycin |
| CN106614695A (en) * | 2016-12-29 | 2017-05-10 | 成都格瑞赛斯科技有限公司 | Rice insecticide and fungicide composition containing guadipyr |
| CN107372570A (en) * | 2017-07-07 | 2017-11-24 | 中国农业大学 | A kind of suspension seed-coating agent containing guadipyr and its preparation method and application |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102812964A (en) * | 2012-09-06 | 2012-12-12 | 中国农业大学 | Pesticide composition containing thiacloprid and validamycin |
| CN106614695A (en) * | 2016-12-29 | 2017-05-10 | 成都格瑞赛斯科技有限公司 | Rice insecticide and fungicide composition containing guadipyr |
| CN107372570A (en) * | 2017-07-07 | 2017-11-24 | 中国农业大学 | A kind of suspension seed-coating agent containing guadipyr and its preparation method and application |
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