A kind of composition pesticide containing propylene glycol alginate and etoxazole
Technical field
The invention belongs to technical field of pesticide, and in particular to be a kind of pesticide containing propylene glycol alginate and etoxazole
Composition and its application.
Background technology
Propylene glycol alginate is a kind of common food additives, all harmless to people and animals and environment, and it can be on also
As a kind of Biocidal drug of physical action mechanism, the mode of action is contact with its distinctive viscosity and physics to tag,
Quick closure and blocking pest are used for the stomata of respiratory metabolism, block metabolism and the circulation canal of pest, make its death by suffocation, energy
The evil of the agriculturally more difficult prevention such as enough effectively preventing trialeurodes vaporariorums, red spider, pear sucker, tea lesser leafhopper, aphid and planthopper
Worm.
Etoxazole belongs to diphenyl uh oxazolines acaricide, and action of contace poison is strong, can inhibit the normal molting process of mite class, right
Ovum, young mite, deutonymph have more strongly active, have to female into mite and inhibit fertility effect, the mite class that resistance has been generated to Hexythiazox has very
Good control effect.
The present inventor is found surprisingly that, propylene glycol alginate and etoxazole compounding can be improved insecticidal effect,
Expand insecticidal spectrum, improve the lasting effect and quick-acting of medicament, reduce dosage, mitigate medicament selection pressure, delay drug resistance
It generates and develops.
Invention content
The purpose of the present invention is to provide it is a kind of with synergistic function, use cost is low, preventive effect is good contains alginic acid third
The Efficient insecticidal composition of diol ester.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:A kind of agriculture containing propylene glycol alginate and etoxazole
The weight ratio of drug composition, wherein propylene glycol alginate and etoxazole is 1:60-60:1, preferably 1:10-10:1.
Further, the weight ratio that both the propylene glycol alginate and etoxazole account for composition is 1-80%, preferably
20-40%。
Further, composition preparation method conventional in being processed by the formulations of pesticide is prepared into wettable powder
It is any in agent, water dispersible granules, aqueous emulsion, suspending agent, microemulsion, dry suspending agent, dispersible oil-suspending agent.
Further, various pests and evil mite of the composition for prevention agriculturally, preferably red spider.
The frequency of use and usage amount of the composition of the present invention are with crops, pest, weather condition variation and small quantitative change
Change, can achieve the purpose that effectively to prevent by using appropriate dosage.
Compared with prior art, the beneficial effects of the present invention are:Compared with single active constituent, containing there are two effectively into
The composition divided has apparent synergistic effect, improves control effect;The composition has double action mechanism, favorably
In the generation for delaying pest resistance to insecticide;The composition of the present invention is good to crop safety, lasting effect and quick-acting.
Specific embodiment
In order to make the object, technical solutions and advantages of the present invention definitely, the present invention is carried out with reference to embodiment
It is described in detail.
First, example of formulations
Embodiment 1:31% propylene glycol alginate etoxazole water dispersible granules(30:1)
Propylene glycol alginate 30%
Etoxazole 1%
Neopelex 3%
Alkylnaphthalene sulfonate formaldehyde condensation products 4%
Xanthans 2%
Diatomite surplus
Embodiment 2:11% propylene glycol alginate etoxazole water dispersible granules(1:10)
Propylene glycol alginate 1%
Etoxazole 10%
Neopelex 5%
Alkylnaphthalene sulfonate formaldehyde condensation products 5%
Xanthans 2%
Diatomite surplus
Embodiment 3:20% propylene glycol alginate etoxazole suspending agent(1:1)
Propylene glycol alginate 10%
Etoxazole 10%
Naphthalene sulfonic acid-formaldehyde condensation product sodium salt 4%
Calcium lignosulfonate 5%
Polyvinyl alcohol 2%
Silicone antifoams agent 0.2%
Propylene glycol 0.5%
Deionized water surplus
Embodiment 4:22% propylene glycol alginate etoxazole aqueous emulsion(10:1)
Propylene glycol alginate 20%
Etoxazole 2%
Toluene 3%
Agriculture breast 600# 7%
Ethylene glycol 1%
Organic silicon defoamer 0.2%
Deionized water surplus
2nd, Toxicity Determination
Subjects are citrus red mite.The test medicine that active compound is configured to need, test method reference《The Chinese people
Republic agricultural industry criteria NY/T1154. 13-2008》.Single dose and each Mixed Pharmacy are set into 5 various concentration ladders first
Degree (on the basis of pilot study result, the red spider death rate is set in the range of 5% 90% by geometric progression).Test worm is
The red spider in field is picked up from, age uniform adult is selected in laboratory, is put into blade-carrying culture dish, per ware 40
Cephalont, often handles 4 culture dishes, is repeated 3 times, is sprayed under 50PSI pressure with potter spray towers, sprays a ware every time,
Per ware spraying liquid 3ml, then processed culture dish is put into 12H/12H illumination boxs and is cultivated, checks dead worm within 48 hours
Number, blank control spray equivalent clear water, calculates the death rate.By between the probit value of the death rate and the logarithm of series concentration
The LC of each medicament is obtained in linear regression analysis50Value calculates the co-toxicity coefficient of mixture with the abundant methods of Sun Yun(CTC), confession is evaluated with this
Reagent agent is to the activity of test worm.Result of the test is shown in Table 1.
Result of the test shows propylene glycol alginate 1:30-60:In the range of 1, co-toxicity coefficient is all higher than 120, has and increases
Effect acts on, wherein, composition is 1:10-30:In the range of 1, co-toxicity coefficient is all higher than 140, and synergistic function is more preferable.
3rd, field control effectiveness test
In order to preferably verify the practical application effect of the present invention, the medicament of the embodiment of the present invention is used below, does basis
Red spider field control effectiveness test investigates insect population before dispenser, remain within 15 days, 30 days insect population number after medicine respectively, and investigation is per small
Area looks into two plants, and each tree looks into 5 leaves respectively according to the orientation of all directions 4, looks into 40 leaves altogether per cell, carries out control effect system
Meter, while observe test medicine whether there is citrus poisoning generation.Result of the test is shown in Table 2.
By table 2 test it can be seen from the present invention example of formulations dosage be less than single dose dosage in the case of, to citrus
The preventive effect of red spider is better than single dose, wherein, the preventive effect of 22% propylene glycol alginate etoxazole aqueous emulsion is best, 15 days after medicine, 30
It is above 90% to the preventive effect of citrus red mite, and in scope of medication, does not observe that poisoning generates.