CN110477025B - Pesticide composition for muscovidae pests and application thereof - Google Patents
Pesticide composition for muscovidae pests and application thereof Download PDFInfo
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- CN110477025B CN110477025B CN201910850802.4A CN201910850802A CN110477025B CN 110477025 B CN110477025 B CN 110477025B CN 201910850802 A CN201910850802 A CN 201910850802A CN 110477025 B CN110477025 B CN 110477025B
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- pyriproxyfen
- beauveria bassiana
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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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
Abstract
The invention discloses an insecticide composition for muscovidae pests and application thereof, belonging to the technical field of pesticides. The main active ingredients of the insecticidal composition are pyriproxyfen and beauveria bassiana, and the insecticidal composition is prepared by mixing the two active ingredients with a liquid or solid carrier according to the weight ratio and then adding a surfactant and other components. The insecticidal composition is used for the larvae of the mosquitocidae pests, mainly comprises abnormal-shaped mosquitocide larvae and bradysia odoriphaga larvae in the storage period of ginger, the action mechanisms of the effective components of pyriproxyfen and beauveria bassiana are completely different, and the composition can be used for synergically synergizing the larvae of the mosquitocidae pests, improving the control effect, reducing the pesticide consumption, delaying the generation of drug resistance and reducing the resistance risk.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to a pesticide composition containing pyriproxyfen and beauveria bassiana for ophthalmic fungidae pests.
Background
The muscovidae pests mainly comprise heterotypic oculata mosquito (Phyxia scabiei), Bradysia odoriphila (Bradysia odoriphaga) and the like, the heterotypic oculata mosquito is an important pest in the storage period of ginger, larvae are commonly called as 'ginger maggots', ginger blocks are usually damaged locally, only crude fibers and granular insect dung are left in the damaged part, and the rotting can be caused, so that the commodity of the finished ginger is seriously influenced; the bradysia odoriphaga mainly damages vegetable crops of liliaceae, compositae and the like, wherein the yield loss of the leeks is 30-80% due to serious occurrence of the bradysia odoriphaga in northern protected areas, farmers apply a large amount of chemical pesticides for preventing and treating pests of the muscoviridae, most of the bradysia odoriphaga and heterotypic muscoviridae in domestic ginger and leek planting areas are phoxim, abamectin, chlorpyrifos, trichlorfon and dichlorvos, individual farmers even still use pesticides prohibited by national regulation, and improper use of the pesticides causes residue exceeding standard, so that hundreds of millions of dollars are lost each year. Therefore, when the pesticide is used for preventing and treating the muscovidae pests, a proper pesticide variety is correctly selected, the prevention and treatment effect of the pesticide is improved, and the influence of pesticide residues on the quality of vegetables is reduced.
Pyriproxyfen (pyriproxyfen), also known as chlorfenapyr and pyriproxyfen, is an alkoxy pyridine juvenile hormone chitin synthesis inhibitor created and developed by the company sumitomo in 1983, commercialized in 1991, and widely used for mosquito and fly control and animal health in public health. The pyriproxyfen has the advantages of good light stability, small dosage, high activity, strong leaf conductivity and systemic type, long lasting period, safety to crops, low toxicity to mammals and little influence on ecological environment, and conforms to the aim of protecting the ecological environment of human beings.
Beauveria bassiana (Beauveria bassiana) is a microorganism with insecticidal potential, has the characteristics of high selectivity, environmental protection, safety and reliability, and can effectively protect natural enemies of pests, thereby integrally improving the field control effect. The insecticidal mechanism is unique, and the drug resistance is not generated; can be repeatedly infected and has long-term effect.
In the process of applying the pesticide to control crop pests, a single variety or a single action mode of chemical pesticide is continuously used for a long time at a high dose, so that the problems of pesticide resistance, resistance evolution and the like of the pests are easily caused. The reasonable compounding or mixing of the pesticide compound has the advantages of improving the control effect, delaying the occurrence and development of the drug resistance of pests and the like, and is one of the most effective methods for solving the problems.
At present, no report related to the compound use of pyriproxyfen and beauveria bassiana for preventing and treating heterotypic oculogyrax and bradysia odoriphaga by ginger in the storage period is available.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an insecticide composition containing pyriproxyfen and beauveria bassiana, which realizes the effective control of anopheles officialis and bradysia odoriphaga in the storage period, improves the control effect, reduces the application amount of pesticides, improves the safety of crops, solves the problems of pest resistance to drugs and the like.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a synergistic insecticidal composition, the effective components of the insecticidal composition comprise pyriproxyfen and beauveria bassiana; the weight ratio of the pyriproxyfen to the beauveria bassiana in the insecticidal composition is 1-100: 1-100.
On the basis of the scheme, the weight ratio of the pyriproxyfen to the beauveria bassiana in the insecticidal composition is 1-20: 1-60.
On the basis of the scheme, the weight ratio of the pyriproxyfen to the beauveria bassiana in the insecticidal composition is 1-10: 1-40.
Within the limited weight ratio range, the pyriproxyfen and the beauveria bassiana are mixed to obtain the technical effect of synergy.
On the basis of the scheme, the mass percentage content of the pyriproxyfen and the beauveria bassiana in the insecticidal composition accounts for 1-95% of the total amount.
On the basis of the scheme, the mass percentage content of the pyriproxyfen and the beauveria bassiana in the insecticidal composition accounts for 1-40% of the total amount.
On the basis of the scheme, the synergistic insecticidal composition further comprises a conventional pesticide auxiliary agent, and the conventional pesticide auxiliary agent can be a carrier, a surfactant and the like.
The carrier represents an organic or inorganic, natural or synthetic substance. They facilitate the application of the active ingredient, the carrier being generally inert and must be agriculturally acceptable, in particular for the treated plant. The carrier may be a solid, such as a clay, natural or synthetic silicate, silica, resin, wax, solid fertilizer, or the like; or liquids such as water, alcohols, ketones, petroleum distillates, aromatic or waxy hydrocarbons, chlorinated hydrocarbons, liquefied gases, etc.
The surfactant may include an emulsifier, dispersant or wetting agent, which may be ionic or non-ionic. Examples which may be mentioned are salts of polyacrylic acids, lignosulphonates, salts of phenolsulphonic or naphthalenesulphonic acids, polymers of ethylene oxide with aliphatic alcohols or with aliphatic acids or with aliphatic amines and substituted phenols, in particular alkylphenols or arylphenols, sulphosuccinates, taurine derivatives, in particular taurine alkyl esters, and phosphoric esters of alcohols or polyhydroxyethylated phenols, alkylsulfonates, alkylarylsulphonates, alkylsulfates, lauryl ether sulphates, fatty alcohol sulphates, and sulphated hexadec, heptadeca-and octadecanols and sulphated fatty alcohol glycol ethers, and furthermore condensates of naphthalene or naphthalenesulphonic acids with phenol and formaldehyde, polyoxyethylene octylphenyl ether, ethoxylated isooctylphenol, octylphenol or nonylphenol, alkylphenyl polyglycol ethers, tributylphenyl polyglycol ether, tristearylphenyl polyglycol ether, polystearylphenyl polyglycol ether, Alkylaryl polyether alcohols, alcohol and fatty alcohol/ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol esters, lignosulfite waste liquors, and also proteins, denatured proteins, polysaccharides (e.g. methylcellulose), hydrophobically modified starches, polyvinyl alcohols, polycarboxylates, polyalkoxylates, polyvinylamines, polyvinylpyrrolidone and copolymers thereof. At least one surfactant is required to be present to facilitate dispersion of the active ingredients in water and to facilitate their proper application to the plant.
The pesticidal composition may also contain various other components such as protective colloids, binders, thickeners, thixotropic agents, penetrants, stabilizers, chelating agents, dyes, colorants, and polymers.
The insecticidal composition may be diluted by the user prior to use or used directly. The formulation can be prepared by conventional processing methods, i.e., mixing the active substance with a liquid solvent or solid carrier, and adding one or more surfactants such as dispersants, stabilizers, wetting agents, binders, defoamers, etc.
On the basis of the scheme, the preparation of the insecticidal composition is wettable powder, dispersible oil suspending agent, suspoemulsion, missible oil, water dispersible granules (dry suspending agent), emulsion in water or microemulsion.
For example, the raw materials, the safener, the solvent and the emulsifier in the formula are added into a mother liquor preparation kettle to prepare a uniform oil phase, deionized water, an antifreeze agent and the like are uniformly mixed and injected into a product preparation kettle, and the mixture is uniformly mixed by high-speed stirring to prepare the transparent or semitransparent microemulsion product of the composition.
In short, the compositions of the present invention may be mixed with solid and liquid additives conventionally used in prior art formulations.
The synergistic insecticidal composition is applied to prevention and control of crop pests.
On the basis of the scheme, the pests in the insect pests are the Eumycota.
On the basis of the scheme, the muscovidae pests are heterotypic muscovidae and bradysia odoriphaga.
The invention has the following beneficial effects:
the insecticidal composition can be applied to ginger blocks and Chinese chives in the storage period to be treated by a spraying method, or can be covered on the ginger blocks and Chinese chive ridges in the storage period by a method of mixing poison soil and mixing poison sand, and particularly the ginger bud heads and Chinese chive bulb parts which are easily damaged by heterotypic muscae volitantes.
(1) The insecticidal composition is an environment-friendly insecticide, is easy to degrade in the environment, is safe to Chinese chives and gingers in the storage period, and does not have the risk of residue exceeding standard of the Chinese chives and the gingers after storage.
(2) The insecticidal composition has the characteristics of low cost, convenient use and easy popularization, and has great economic and social benefits.
(3) Compared with the prior art, the insecticidal composition can prevent and control heterotypic Armillaria mellea in the storage period, and can also prevent and control bradysia odoriphaga.
(4) The effective active ingredients of the insecticidal composition of the invention, namely pyriproxyfen and beauveria bassiana, have obvious synergistic effect; the synergistic effect is represented by reduced application amount, reduced damage rate of ginger and leek in storage period, longer insecticidal action and lower insect population of the eye fungidae pests.
Detailed Description
Terms used in the present invention have generally meanings as commonly understood by one of ordinary skill in the art, unless otherwise specified.
The present invention will be described in further detail with reference to the following data in conjunction with specific examples. The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention in any way.
Example 1
The prevention and control effect of the pyriproxyfen and beauveria bassiana compound on pests is researched through indoor toxicity measurement.
Reagent to be tested: pyriproxyfen and beauveria bassiana.
Dissolving pyriproxyfen and beauveria bassiana raw medicines respectively with acetone, preparing into 10000mg/L mother liquor respectively, adding emulsifier Tween-80 according to 0.2% volume fraction, and storing in refrigerator at 4 deg.C for use.
The tested pests: heterotypic Armillaria oculata, and bradysia odoriphaga.
The determination method comprises the following steps:
(1) indoor toxicity determination method
The test insect toxicity test uses heterotypic Armillaria mellea and bradysia odoriphaga as test materials, and adopts stomach toxicity contact poisoning combined toxicity method to test toxicity of pyriproxyfen, Beauveria bassiana and its mixed preparation.
Single agent virulence determination methods:
the method comprises the steps of preparing pyriproxyfen and beauveria bassiana reagent into 7 concentration gradients of 1.0, 2.0, 4.0, 8.0, 16.0, 32.0, 64.0mg/L and the like, respectively, flatly laying clean filter paper in a culture dish with the diameter of 9cm, and quantitatively dripping 1.2mL of liquid medicine on the filter paper. Cutting ginger tuber into 0.1cm thick pieces, soaking 1 piece in different concentration liquid medicine for 30 s, taking out, absorbing redundant liquid medicine on water absorption paper, placing in culture dish paved with same liquid medicine processing filter paper, lightly picking up 3-year-old larva with writing brush in culture dish, repeating for 3 times with 25 heads each, taking 0.1% Tween-80 water solution as blank control, calculating relative mortality, converting mortality into several values, and using least square methodCalculating toxicity regression formula of death rate value and test agent concentration logarithm to obtain effective lethal middle concentration LC of each agent for anopheline muscae volitantes50. The test data are statistically analyzed by Microsoft Excel 2003 and DPS data processing working platform.
Combined virulence determination of the mixture:
on the basis of single-dose toxicity measurement, 9 proportions of pyriproxyfen and beauveria bassiana (500 hundred million spores/g) for mixing are respectively set according to the weight proportion of 10: 1, 2: 1, 1: 2, 1: 10, 1: 20, 1: 30, 1: 40 and 1: 50, 5 series concentration gradients are prepared according to different proportions, and each treatment is repeated for 4 times. The lethal middle concentration LC of the mixed medicament to the heterotypic Armillaria mellea is obtained by linear regression analysis between the mortality of insect population and the concentration logarithm value of the medicament50Values and CTC values.
(2) Statistical analysis of data
The test data are statistically analyzed by Microsoft Excel 2003 and DPS data processing working platform, and LC of each medicament is calculated50Value, 95% confidence limit. The co-toxicity coefficient of the mixture was calculated by Sun Yunpei method (1960), and the synergistic effect of the mixture was evaluated based on the co-toxicity coefficient.
The calculation formula is as follows:
mortality rate (%) is death number per total number of insects treated x 100
Corrected mortality (%) - (treatment group mortality-control group mortality)/(1-control group mortality) ] × 100
Virulence index TI ═ (standard pharmaceutical LC)50Test agent LC50)×100
The actual toxicity index ATI of the mixed preparation (standard medicament LC)50Mixed preparation LC50)×100
The theoretical toxicity index TTI of the mixed preparation is TI XPA of single A and TI XPB of single B (PA and PB are the percentage content of the effective components in the mixed preparation respectively)
Co-toxicity coefficient CTC ═ actual virulence index ATI of the mixture/theoretical virulence index TTI x 100 of the mixture
And (3) judging the synergistic effect: CTC is more than or equal to 120, and has synergistic effect; 80 < CTC < 120, which is additive effect; CTC is less than or equal to 80, and is antagonistic.
(3) Results and analysis: tables 1 to 2 show the following.
TABLE 1 determination of virulence of Heteromyx oculi mosquito by two agents
TABLE 2 toxicity test results of different proportions of pyriproxyfen and Beauveria bassiana for anopheles
As can be seen from tables 1 and 2, the pyriproxyfen, the beauveria bassiana and the mixed preparation thereof have high toxic effect on heterotypic muscae mosquitoes, wherein when the ratio of the pyriproxyfen to the beauveria bassiana is 1: 10-1: 40, the co-toxicity coefficient to pathogenic bacteria to be tested is more than 120, and the two insecticides have good synergistic effect under the ratio.
Example 2
31% pyriproxyfen-beauveria bassiana wettable powder
The components are as follows (the components are calculated according to the weight percentage):
1% of pyriproxyfen, 30% of beauveria bassiana (500 hundred million spores per gram), 2% of alkyl sodium naphthalene sulfonate formaldehyde condensate (dispersant), 3% of sodium lignosulfonate (dispersant), 3% of sodium dodecyl sulfate (wetting agent), 20% of white carbon black (filler) and kaolin (filler) which are complemented to 100%.
The preparation method comprises the following steps: the active ingredients, various auxiliary agents and fillers are fully and uniformly mixed according to the proportion, and the mixture is crushed by a superfine pulverizer to prepare the 31 percent pyriproxyfen-beauveria bassiana wettable powder.
The pesticide composition is applied to preventing and treating abnormal-shaped Armillaria mellea, and is prepared by mixing the medicines with sand, stirring, covering on ginger in a turnover box, and allowing part of the mixture to enter gaps between gingers according to the dosage of each medicine and the dilution of 100 kg of medicine sand required by each ton of ginger before entering a cellar. The control effect is shown in the following table 3.
Table 331% pyriproxyfen-beauveria bassiana wettable powder for preventing and treating abnormal-shape muscae volitantes field effect
As can be seen from Table 3, the synergistic effect of the mixture of pyriproxyfen and beauveria bassiana is obvious, the control effect on abnormal-shaped Armillaria mellea is obviously better than that of a single dose, and the dosage of the effective components is obviously reduced.
Example 3
21% pyriproxyfen-beauveria bassiana granules
The components are as follows (the components are calculated according to the weight percentage):
1% of pyriproxyfen, 20% of beauveria bassiana (500 hundred million spores/gram), 3% of nekal (wetting dispersant), 3% of naphthalenesulfonate (wetting dispersant), 3% of polyvinylpyrrolidone (binder), 5% of white carbon black (filler) and sepiolite (filler) which are complemented to 100%.
The preparation method comprises the following steps: mixing the active ingredients, nekal, naphthalenesulfonate, white carbon black and sepiolite in certain proportion, airflow crushing to less than 325 mesh to obtain mother powder, mixing the mother powder with water solution of polyethylene pyrrolidone, pelletizing, stoving and sieving to obtain 21% pyriproxyfen-beauveria bassiana granule.
The pesticide composition is applied to preventing and treating abnormal-shaped Armillaria mellea, and is prepared by mixing the medicines with sand, stirring, covering on ginger in a turnover box, and allowing part of the mixture to enter gaps between gingers according to the dosage of each medicine and the dilution of 100 kg of medicine sand required by each ton of ginger before entering a cellar. The control effect is shown in the following table 4.
Field effect of pyriproxyfen-beauveria bassiana granules with surface concentration of 421% in preventing and treating anopheles zingiberensis
As can be seen from Table 4, the synergistic effect of the mixture of pyriproxyfen and beauveria bassiana is obvious, the control effect on heterotypic muscae mosquitoes is obviously better than that of a single dose, and the dosage of the effective components is obviously reduced.
Example 4
11% pyriproxyfen-beauveria bassiana dispersible oil suspending agent
The components are as follows (the components are calculated according to the weight percentage):
1% of pyriproxyfen, 10% of beauveria bassiana, 1% of BHT-2, 6-di-tert-butyl-4-methylphenol (stabilizer), 5% of calcium dodecylbenzene sulfonate (emulsifier), 3% of castor oil ethylene oxide adduct (emulsifier), 2% of nonylphenol polyoxyethylene ether (emulsifier), 5% of sodium lignosulfonate (dispersant), 4% of organic bentonite (thickener), 3% of white carbon black (thickener) and the balance of corn oil to 100%.
The preparation method comprises the following steps: the active ingredients, various auxiliaries and water are fully and uniformly mixed according to a proportion, and the mixture is put into a sand mill and ground to the particle size of 5 mu m, so that the 11% pyriproxyfen-beauveria bassiana dispersible oil suspending agent is prepared.
The pesticide composition is applied to preventing and treating bradysia odoriphaga, and in the early stage of damage of bradysia odoriphaga, the pesticide is fully stirred and mixed with water according to the application of 300 kg of liquid medicine per mu of land, a sprayer removes a spray head, and roots are irrigated along ridges; mixing 30 kg of sand with arsenopyrite per mu of land, and spreading the mixture along ridges. The control effect is shown in the following table 5.
Surface 511% pyriproxyfen-beauveria bassiana dispersible oil suspension agent for preventing and treating field effect of bradysia odoriphaga
As can be seen from Table 5, the synergistic effect of the mixture of pyriproxyfen and beauveria bassiana is obvious, the control effect on bradysia odoriphaga is obviously better than that of a single dose, and the dosage of the effective components is obviously reduced.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. The application of a synergistic insecticidal composition in preventing and controlling crop muscovidae pests is characterized in that the effective components of the synergistic insecticidal composition comprise pyriproxyfen and beauveria bassiana; the weight ratio of the pyriproxyfen to the beauveria bassiana in the insecticidal composition is 1: 10-1: 40; the beauveria bassiana is 500 hundred million spores per gram.
2. The use according to claim 1, wherein said Eumycotina pests are Allophyllotoxin or bradysia odoriphaga.
3. The use as claimed in claim 1, wherein the insecticidal composition comprises pyriproxyfen and beauveria bassiana in an amount of 1-95% by weight.
4. The use as claimed in claim 3, wherein the insecticidal composition comprises pyriproxyfen and beauveria bassiana in an amount of 1-40% by weight.
5. The use as claimed in any one of claims 1 to 4, wherein the formulation of the insecticidal composition is wettable powder, dispersible oil suspension, suspending agent, suspoemulsion, emulsifiable concentrate, water dispersible granule, aqueous emulsion or microemulsion.
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Non-Patent Citations (1)
| Title |
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| Changes in cellular immune responses of Chilo suppressalis Walker (Lepidoptera: Crambidae) due to pyriproxyfen treatment;Seyyedeh Kimia Mirhaghparast 等;《Journal of Plant Protection Research》;20151231;第55卷(第3期);第287-293页 * |
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