CN104621175A - Pesticide composition containing fluorine pyrazole furanone and phoxim, and application of pesticide composition - Google Patents
Pesticide composition containing fluorine pyrazole furanone and phoxim, and application of pesticide composition Download PDFInfo
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- CN104621175A CN104621175A CN201510050560.2A CN201510050560A CN104621175A CN 104621175 A CN104621175 A CN 104621175A CN 201510050560 A CN201510050560 A CN 201510050560A CN 104621175 A CN104621175 A CN 104621175A
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- phoxim
- furanone
- pesticide composition
- fluorine
- pyrrole furanone
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Abstract
The invention relates to a pesticide composition containing fluorine pyrazole furanone and phoxim, and in particular relates to an insecticide which is formed by combining the fluorine pyrazole furanone and the phoxim and is used for controlling bradysia odoriphaga of Chinese chives, belonging to the technical field of pesticide composition of the insecticide. The pesticide composition takes the fluorine pyrazole furanone and the phoxim as main effective components, wherein the mass ratio of fluorine pyrazole furanone to phoxim is equal to (1:1)-(1:8). The pesticide composition can be applied to controlling diptera pests of liliaceous vegetable crops. After the fluorine pyrazole furanone is compounded with the phoxim, the pesticide composition has synergistic insecticidal activity for the larvas of the bradysia odoriphaga of the Chinese chives, so that the insecticidal effect is remarkably improved, the consumption of pesticide is reduced, the residue of the pesticide on the crops can be reduced, and the environmental pollution is alleviated; the pesticide composition is safe to people and livestock and good in environmental compatibility; after the pesticide composition is used, drug resistance of the pests is not easily generated.
Description
Technical field
The present invention relates to the composition pesticide of a kind of fluorine-containing pyrrole furanone and phoxim, especially fluorine pyrrole furanone and phoxim combined rear as insecticide for preventing and treating leek fragrant-flowered garlic maggot, belong to the composition pesticide technical field of insecticide.
Background technology
Bradysia odoriphaga (Bradysia odoriphaga Yang et Zhang) belongs to diptera, eye Sciaridae, Bradysia Sciara, it is the distinctive pest species of China, be distributed widely in the ground such as northeast, North China, Central China, northwest, can be caused harm leek, green onion, melon, wild cabbage, lettuce, 7 section 30 various vegetables such as flowers and Chinese herbal medicine, is wherein injured the heaviest with leek.
Phoxim is a kind of organophosphorus insecticide, and insecticidal spectrum is wide, and power of knocking down is strong, to tag and stomach poison function, without systemic action.In field because of to photo-labile, decompose very soon, so residual life is short, residual dangerous little, but this medicine applies in soil, and residual life, is very long, is suitable for preventing and treating soil insect.Due to a large amount of uses of phoxim, the pesticide resistance of fragrant-flowered garlic maggot is caused constantly to be strengthened (study discovery according to inventor, some areas, Yantai fragrant-flowered garlic maggot population is 103.2 times to the resistant multiple of phoxim, shows as high-level resistance), not good at field control effect.
Fluorine pyrrole furanone is a kind of anabasine insecticide of Bayer Cropscience Co., Ltd exploitation, and anabasine insecticide mainly acts on the central nervous system of insect, is the inhibitor of nAChR.Because the action target of anabasine insecticide, the mode of action are different from organic phosphor, carbamate and pyrethroid insecticides, this insecticides and common insecticides do not have cross resistance, have insect tag, interior suction, stomach poison function, be mainly used in, to the control of sucking pest as insects such as aphid, leafhopper and coleopteras, there is in controlling underground pest extraordinary application prospect at present.
In the real process of agricultural production, a large amount of, single abuse chemical insecticide for a long time, causes the pesticide resistance of fragrant-flowered garlic maggot constantly to be strengthened, and persticide residue increases.Different cultivars composition carries out composite, is to prevent and treat the very common method of resistant insect.Heterogeneity is carried out composite, according to practical application effect, judge certain composite be synergy, addition or antagonism.In most cases, the composite effect of agricultural chemicals is all summation action, really has the seldom composite of synergistic effect, especially synergistic effect clearly, very high composite just less of co-toxicity coefficient.Study discovery through inventor, the composite relevant report about fluorine pyrrole furanone and phoxim is not yet open.
Summary of the invention
The present invention is on the basis of prior art, by furtheing investigate the application of complex composition in agriculture field of fluorine pyrrole furanone and phoxim, there is provided a kind of and there is Environmental compatibility, high-efficiency low-toxicity, compounded pesticides containing fluorine pyrrole furanone and phoxim, another object of the present invention additionally provides the application of this compounded pesticides in agriculture field, and especially in control leek fragrant-flowered garlic maggot, performance is very outstanding.
A composition pesticide for fluorine-containing pyrrole furanone and phoxim, special character is that the quality proportioning of its active ingredient fluorine pyrrole furanone and phoxim is 1:1 ~ 1:8;
A composition pesticide for fluorine-containing pyrrole furanone and phoxim, further improve and be, the quality proportioning of its active ingredient fluorine pyrrole furanone and phoxim is 1:2 ~ 1:8.
A composition pesticide for fluorine-containing pyrrole furanone and phoxim, further improve and be, the quality proportioning of its active ingredient fluorine pyrrole furanone and phoxim is 1:4.
The composition pesticide of a kind of fluorine-containing pyrrole furanone of the present invention and phoxim is applied to control leek fragrant-flowered garlic maggot.
The composition pesticide of a kind of fluorine-containing pyrrole furanone of the present invention and phoxim has good preventive effect being diluted to application control leek fragrant-flowered garlic maggot under 1500 ~ 2500 times.
Fluorine pyrrole furanone and phoxim single dose are applied to control leek fragrant-flowered garlic maggot respectively and all have certain control efficiency, and fluorine pyrrole furanone and phoxim compound application control leek fragrant-flowered garlic maggot, show obvious synergistic effect.There is following advantage:
1, there is synergistic effect.Fluorine pyrrole furanone and phoxim are all to show synergistic effect in the ratio range of 1:2 to 1:8, and wherein maximum with the proportioning synergy of 1:4, co-toxicity coefficient is 176.8;
2, fluorine pyrrole furanone and phoxim compound, decreases Pesticide use amount, not only increases the field efficacy of control leek fragrant-flowered garlic maggot after composite, and compounded pesticides 2500 times of liquid are respectively compared with two single dose 1500 times, 500 times of usage amounts decreasing 50% and 91.67%;
3, fluorine pyrrole furanone and phoxim compound, the service life reducing use cost, alleviate pollution to environment, delayed the drug-fast generation of fragrant-flowered garlic maggot, added agricultural chemicals.
The present invention is used alone and the composite rear effect to leek fragrant-flowered garlic maggot by Toxicity Determination and field trial fluorine pyrrole furanone and phoxim, establish the optimal proportion of two kinds of agricultural chemicals, for production and application, to reach the object reducing environmental pollution, delay pest resistance to insecticide generation, in addition, applicant is found by a large amount of research experiments, adopt the complex composition of two kinds of agricultural chemicals fluorine pyrrole furanones and phoxim, there is synergistic function, compared with existing unitary agent, insecticidal effect significantly improves, and to crop safety, is worth applying in agricultural production.
Embodiment
The following instantiation of the present invention is described in detail, but limitation of the present invention absolutely not.In all proportionings, percentage is mass percent.
Embodiment 1
Indoor bioassay is tested
1.1 test method
1.1.1 medicament preparation
20% fluorine pyrrole furanone soluble concentrate, Bayer Cropscience Co., Ltd provides; 40% phoxim emulsifiable concentrate, Shandong is contained southern Shandong agricultural chemicals Co., Ltd of nation and is provided.10000mg/L mother liquor is made into for subsequent use by the acetone diluted that concentration is 99%.
1.1.2 for examination worm source and processing method
Fragrant-flowered garlic maggot sensitive population picks up from experimental plot, academy of agricultural sciences of Yantai City, in indoor culture dish, make feed with the false stem of leek, to raise the population of 2 years continuously as examination worm.Insecticide acetone diluted is diluted to 5-7 concentration by often processing, with the liquid of variable concentrations, filter paper is moistening, be layered in 9cm culture dish, leek (white portion) is cut into 2cm segment, in variable concentrations liquid, soak 15s, take out 5 sections and be placed in culture dish, then move into 20 4 instar larvaes of the same size lightly with writing brush, each process repetition 3 times, establishes clear water to contrast simultaneously.
1.1.3 raise and observe
The illumination box that examination worm after process is placed in that temperature is 25 DEG C ± 1 DEG C, relative moisture 60% ~ 70%, photoperiod are L:D=(16:8) h.
1.1.4 check
Check examination worm death condition after process 48h, touch insect body with tweezers, motionless for death standard with polypide.
1.1.5 data statistics and analysis
(1) computational methods
The abundant co-toxicity coefficient method waiting nineteen sixty to propose of Sun Yun is adopted to evaluate different fluorine pyrrole furanone and phoxim compound ratio to the activity of fragrant-flowered garlic maggot.
Toxicity index TI=(LC50 of the LC50/ reagent agent of standard agent) × 100
The actual toxicity index of mixture (ATI)=(LC50 of the LC50/ mixture of standard agent) × 100
The theoretical toxicity index (TTI) of mixture=[percentage (%) that TI × A agent of A agent is shared in mixture] ten [percentage (%) that TI × B agent of B agent accounts in mixture]
Co-toxicity coefficient (CTC)=[the actual toxicity index of mixture (ATI)]/[the theoretical toxicity index (TTI) of mixture] × l00
According to the regulation of the Institute for the Control of Agrochemicals of the Ministry of Agriculture,PRC, the criterion of mixture formula synergy is: co-toxicity coefficient is greater than 120 for synergistic effect; Co-toxicity coefficient 80 – 120 is summation action; Co-toxicity coefficient is less than 80 for antagonism; The selection of optimum proportioning is with the co-toxicity coefficient of mixture and LC
50(or LD
50) value two indices weighs, i.e. higher the and LC of co-toxicity coefficient
50(or LD
50) value minimum (namely surveying toxicity index maximum).
(2) statistical analysis
Indoor biometrics test adopts SPSS 20.0 statistical analysis system to carry out statistical analysis, obtains the virulence regression equation of medicament, and calculates LC
50, correlation coefficient.
1.2 result of the test
Adopt stomach toxicity method to have rated fluorine pyrrole furanone and phoxim two kinds of single doses and different ratio mixture thereof to the control efficiency of leek fragrant-flowered garlic maggot, result shows that two kinds of single dose indoor all show certain inhibition, LC to leek fragrant-flowered garlic maggot
50be respectively 31.840mg/L and 3.308mg/L.Fluorine pyrrole furanone and phoxim all show obvious synergistic effect in the ratio range of 1:2 to 1:8, and especially the synergy of 1:4 proportioning is the most remarkable, and co-toxicity coefficient is 176.8; 1:1 proportioning, co-toxicity coefficient is 109.2, shows as summation action.
Table 1 fluorine pyrrole furanone co-toxicity to fragrant-flowered garlic maggot 4 instar larvae mixed with phoxim
Embodiment 2
Field efficacy evaluation test
The fluorine pyrrole furanone gone out according to lab screening and phoxim optimum compound proportion example 1:4, made 50% fluorine pyrrole furanone phoxim compound pesticide, wherein containing 10% fluorine pyrrole furanone and 40% phoxim.Field control effectiveness test, with 20% fluorine pyrrole furanone soluble concentrate 500 times, 40% phoxim emulsifiable concentrate 1500 doubly medicament in contrast, has been carried out in field.
2.1 test method
2.1.1 experimental condition
(1) selection of subjects, crop and kind
Subjects is fragrant-flowered garlic maggot, and test kind is Hanzhong.
(2) crop genetics and environmental condition
Test and carry out at prefix village, pond, Liu Gezhuan town, Haiyang City, Shandong Province Chinese chive field on November 14th, 2014, fragrant-flowered garlic life in 4 years ages, fragrant-flowered garlic maggot generation over the years is general and even.Cultivation condition (soil types, fertilising, growing stage, seeding row spacing etc.) and the tree body growing way of all experimental plots are homogeneous, and consistent with the cultivation step of locality.
2.1.2 experimental scheme and arrangement
(1) reagent agent
50% fluorine pyrrole furanone phoxim compound pesticide, research of agricultural science institute of Yantai City prepares.
(2) medicament is contrasted
20% fluorine pyrrole furanone soluble concentrate, Bayer Cropscience Co., Ltd product;
40% phoxim emulsifiable concentrate, southern Shandong agricultural chemicals Co., Ltd of nation product is contained in Shandong.
(3) dosing arranges with process
Plot area 30m
2, repeat 4 times.
Table 2 reagent agent experimental scheme
2.2 application method
2.2.1 using method
Adopt along ridge spray method, adopt 3WDS-2.6 type to be separated straight tube high-pressure sprayer, remove spray sheet, aim at Radix Folium Allii tuberosi stem and to spray liquid along ridge, each treatment agent is all by 667m
2dosage is watered 500kg,
2.2.2 the medicament data of other damage by disease and insect is prevented and treated
Duration of test, each community, except spraying test medicament, does not spray other any insecticides.
2.3 investigation and statistical analyses
Strain rate of being injured is investigated: before medicine, investigate killed strain number and attacked trees rate.After medicine 7,14,21d investigates killed strain number (, lodging yellow, soft with blade tip is as the criterion), 400 strains are investigated in each community.
Survival insect population investigation: before medicine and investigate heart district in the cell for the last time and dig 5 caves (pier) leek, the inside and outside maggot number of living of statistics bulb, calculates control efficiency.
Strain rate of being injured (%)=strain number of being injured/investigate total strain number × 100%
Protect strain effect (%)=[1-(strain rate of being injured after strain rate × treatment region medicine of being injured before the medicine of check plot)/(strain rate of being injured before strain rate × treatment region medicine of being injured after the medicine of check plot)] * 100
Control efficiency (%)=[1-(after borer population × treatment region medicine of being injured before the medicine of check plot borer population)/(before borer population after the medicine of check plot × treatment region medicine borer population)] * 100
The Duncan duncan's new multiple range method of DPSv12.01 data processing software is adopted to carry out Multiple range test to each preventive effect.
2.4 result of the test
Table 3 reagent agent field test results
Note: in table, data are and manage average data everywhere
50% fluorine pyrrole furanone phoxim compound pesticide 1500 ~ 2500 times all shows good seedling protecting effect and vermins-proof effect, 1500 times of process 5% levels is significantly higher than the preventive effect of phoxim 1500 times, fluorine pyrrole furanone 500 times; 2000 times, 2500 times process are suitable with phoxim 1500 times of preventive effects, higher than the preventive effect of fluorine pyrrole furanone 500 times.In pilot survey process, each chemicals treatment tries leek kind safety, without poisoning to supplying.
Embodiment 3
Mixture safety experiment
In complex composition, fluorine pyrrole furanone and phoxim content are less than or are equivalent to the content of commercially available prod, and therefore its toxicity to people and animals and the safety to crop are satisfactory.Compounded pesticides is through assert that mechanism's toxicity test result shows to belong to micro-virus kind agricultural chemicals:
Rat acute Oral toxicity LD50
>5000mg/kg, ♀ >5000mg/kg;
Rat acute percutaneous toxicity LD50
>5000mg/kg, ♀ >5000mg/kg;
Lagophthalmos stimulates integration to be 0 (1h), is 0 (1:100) dilution, to eye nonirritant after 48h;
Lagophthalmos stimulates integration to be 0 (4h), to no skin irritation.
In sum, the present invention adopts the complex composition of two kinds of agricultural chemicals fluorine pyrrole furanones and phoxim, and have synergistic function, compared with existing unitary agent, insecticidal effect significantly improves, and to crop safety, is worth applying in agricultural production.
Claims (5)
1. a composition pesticide for fluorine-containing pyrrole furanone and phoxim, is characterized in that, the quality proportioning of its active ingredient fluorine pyrrole furanone and phoxim is 1:1 ~ 1:8.
2. the composition pesticide of a kind of fluorine-containing pyrrole furanone and phoxim as claimed in claim 1, it is characterized in that, the quality proportioning of its active ingredient fluorine pyrrole furanone and phoxim is 1:2 ~ 1:8.
3. the composition pesticide of a kind of fluorine-containing pyrrole furanone and phoxim as claimed in claim 2, it is characterized in that, the quality proportioning of its active ingredient fluorine pyrrole furanone and phoxim is 1:4.
4. a kind of fluorine-containing pyrrole furanone as described in claim 1 or 2 or 3 and the application of the composition pesticide of phoxim in control leek fragrant-flowered garlic maggot.
5. the composition pesticide of a kind of fluorine-containing pyrrole furanone and phoxim is applied to control leek fragrant-flowered garlic maggot as claimed in claim 4, it is characterized in that 50% fluorine pyrrole furanone phoxim field dilution, 1500 ~ 2500 times of control leek fragrant-flowered garlic maggots of making.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395271A (en) * | 2009-03-25 | 2012-03-28 | 拜尔农作物科学股份公司 | Active ingredient combinations having insecticidal and acaricidal properties |
| CN103651503A (en) * | 2012-09-25 | 2014-03-26 | 陕西美邦农药有限公司 | Pesticidal composition containing fluorine furan pyrazole ketone |
| CN103651488A (en) * | 2012-09-20 | 2014-03-26 | 陕西美邦农药有限公司 | Pesticide composition containing fluorin pyrazol furan ketone and carbamates |
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- 2015-01-31 CN CN201510050560.2A patent/CN104621175A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395271A (en) * | 2009-03-25 | 2012-03-28 | 拜尔农作物科学股份公司 | Active ingredient combinations having insecticidal and acaricidal properties |
| CN103651488A (en) * | 2012-09-20 | 2014-03-26 | 陕西美邦农药有限公司 | Pesticide composition containing fluorin pyrazol furan ketone and carbamates |
| CN103651503A (en) * | 2012-09-25 | 2014-03-26 | 陕西美邦农药有限公司 | Pesticidal composition containing fluorine furan pyrazole ketone |
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