CN103053597A

CN103053597A - Synergistic insecticidal composition containing cis-cypermethrin and flonicamid and application thereof

Info

Publication number: CN103053597A
Application number: CN2011103196890A
Authority: CN
Inventors: 齐武; 邢平; 王红明; 芮裕健; 王俊东
Original assignee: Nanjing Huazhou Pharmaceutical Co Ltd
Current assignee: Nanjing Huazhou Pharmaceutical Co Ltd
Priority date: 2011-10-20
Filing date: 2011-10-20
Publication date: 2013-04-24

Abstract

The invention discloses a synergistic insecticidal composition containing cis-cypermethrin and flonicamid and application thereof. The synergistic insecticidal composition comprises main effective components of alphamethrin and flonicamid in a weight ratio of 0.1-70: 0.1-80. The composition provided by the invention can be used in control of Homoptera pests, especially rice planthopper,aphids, and bemisia tabaci, and has effect significantly better than that of a single agent. composition provided by the invention has high synergistic effect, overcomes and delays insect resistance, expands the spectrum of control, and has high insecticidal speed, long duration, reduced use cost and reduced toxicity.

Description

A kind of Synergistic insecticidal compositions and application thereof that contains alpha-cypermethrin and flonicamid

Technical field

The invention belongs to pesticide field, be specifically related to a kind of Synergistic insecticidal compositions and application thereof take alpha-cypermethrin and flonicamid as main active ingredient.

Background technology

Alpha-cypermethrin (alphacypermethrin), chemical name: (RS)-and cyano group (3-phenoxy phenyl) methyl (IRS) cis is trans-3-(2,2-dichloroethylene)-2, and 2-dimethyl cyclopropane carboxylic acid ester.

Alpha-cypermethrin can be used the control of the pest on crop such as cotton, vegetables, fruit tree, tea tree, soybean and beet.The control efficiency that the various pests such as the Lepidoptera on cotton and the fruit tree, Semiptera, diptera, orthoptera, coleoptera, thrips and Hymenoptera have all been had.Cotton bollworm, pink bollworm, cotten aphid, lychee stink-bug and citrus leaf-miner there is special efficacy.

Flonicamid (flonicamid, flunicotamid), chemical name: N-cyanogen methyl. (trifluoromethyl) vitamin PP.Flonicamid belongs to the lower toxicity insecticide variety.This agent is effective to various suckings pest, and has good osmosis.It can be from root to stem, the infiltration of leaf section, but by leaf section to stem, root osmosis relatively a little less than.

This medicament causes effect by hindering the insect act of sucking.Insect stops to suck after taking in medicament very soon, and is last hungry and dead.

Insect according to electronics sucks behavior (EMIII) parsing, and this agent can make the lancet tissue of the sucking insects such as aphid can't insert plant tissue and cause effect.10% water dispersible granules, every 667m when the insects such as vegetable aphid such as control cucumber ²Use 10% water dispersible granules 30-50g that water is sprayed.When for fruit aphids such as control apples, add water 2500-5000 with 10% water dispersible granules and doubly spray.Use proof through test and land for growing field crops, flonicamid is to various aphids, plant hopper, aleyrodid, leafhopper, fruit bat, wireworm, thrips, ant class, leaf miner, and the first-class sucking pest of springtail has special efficacy, and pests with chewing mouthparts is also had good control efficiency.

The homoptera pests such as rice fulgorid, Bemisia tabaci, aphid are under the condition of present long-term prescription, and resistance increases gradually, and the agricultural chemicals single dose descends gradually to the effect of control of insect, there is no effective preparation for the control of homoptera pest.The inventor finds after deliberation, and the composite of agricultural chemicals is expanding prevention spectrum and the effective measures that improve preventive effect, finds not yet that up to now the complex insecticidal composition of relevant alpha-cypermethrin and flonicamid is used for preventing and treating the resistance homoptera pest.

Summary of the invention

The purpose of this invention is to provide a kind of Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid, this Pesticidal combination production cost is low, have quick-acting and the long-acting pesticidal effect.

The present invention also provides the application on this Insecticidal combinations prevents and treats the resistance homoptera pest in preparation the insecticidal materials.

For achieving the above object, the present invention takes full advantage of both mutual supplement with each other's advantages by the network analysis to alpha-cypermethrin and flonicamid insecticidal properties.

The objective of the invention is to implement by the following technical programs:

A kind of Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid, this Synergistic insecticidal compositions is take alpha-cypermethrin and flonicamid as main active ingredient, wherein, the weight ratio of alpha-cypermethrin and flonicamid is 0.1～70: 0.1～80.The weight ratio of alpha-cypermethrin and flonicamid preferred 0.5～50 in this Synergistic insecticidal compositions: 0.5～60, more preferably 1～40: 10～50.

In the above-mentioned Synergistic insecticidal compositions, the two accounts for the weight percentage 1～80% of composition alpha-cypermethrin and flonicamid, and the best is 4～60%.Effective ingredient is present in the composition with the synergy effective dose in this Pesticidal combination.

This Pesticidal combination is take alpha-cypermethrin and flonicamid as main active ingredient (active component) and insecticides adjuvant, excipient are mixed with take alpha-cypermethrin and flonicamid as main active ingredient and insecticides adjuvant, excipients are mixed with any one formulation that allows on the agricultural chemicals.The preferred missible oil of described formulation, aqueous emulsion, microemulsion or suspending agent.Above-mentioned auxiliary agent can adopt calcium dodecyl benzene sulfonate, emulsifier 600 #, polyoxyethylene polyoxy third rare block compound (such as farming breast 33 ^#), the one or more combinations in the polyoxyethylene nonylphenol ether, excipient comprises cyclohexanone, solvent naphtha, solvent naphtha, water, antifreezing agent (such as propane diols), deionized water etc.Above auxiliary agent, excipient can alone or also also can add other auxiliary material with reaching.

The various pests that Pesticidal combination antagonism homoptera pest, particularly aphid of the present invention, Bemisia tabaci, plant hopper etc. easily produce resistance has good preventive effect, and effect is significantly higher than the application of alpha-cypermethrin and flonicamid single dose.

Therefore, the present invention's Synergistic insecticidal compositions of containing alpha-cypermethrin and flonicamid is used at the insecticidal materials of preventing and treating the resistance homoptera pest.Particularly in the insecticidal materials of preparation control water rice hopper, Bemisia tabaci and aphid, use.

" % " of the present invention is mass percent.

Pesticidal combination of the present invention compared with prior art, produce following beneficial effect: (1) is compared with single dose, present composition antagonism homoptera pest has obviously improved control efficiency; (2) one medicines are controlled more, and a dispenser can prevent and treat various pests simultaneously, reduce control recruitment cost; (3) alternative high-toxic pesticide; (4) have concurrently quick-acting and long-acting; (5) compare with flonicamid or alpha-cypermethrin single dose, produce and the use cost reduction; (6) suppress homoptera pest to the resistance enhancing of agricultural chemicals.

Embodiment

The invention will be further described below in conjunction with embodiment:

Embodiment 1:

Taking by weighing alpha-cypermethrin, flonicamid, to adopt the conventional formulation method to be mixed with main effectively composition quality percentage composition by different proportion be 30% alpha-cypermethrin flonicamid missible oil.Concrete ratio sees Table 1,2.

Adopt rice stem infusion process to measure alpha-cypermethrin and flonicamid and composite sample thereof to the virulence of Brown Planthopper, every processing repeats 3 times, and every concentration is processed 30, uses LC ₅₀Value is pressed the abundant method of Sun Yun and is calculated co-toxicity coefficient:

Table 1 alpha-cypermethrin and flonicamid compound synergic Pesticidal combination are to toxicity test and the co-toxicity coefficient of Brown Planthopper

Data show in the table, and alpha-cypermethrin and flonicamid are mixed and rear Brown Planthopper are had synergistic effect, and three listed in table proportioning co-toxicity coefficients are all much larger than 120, so alpha-cypermethrin and flonicamid are mixed and have significant synergies.Wherein the ratio when flonicamid and alpha-cypermethrin is that 5: 1 mixed synergies are maximum.

Employing is soaked the leaf dip method and is measured alpha-cypermethrin and flonicamid and composite sample thereof to the virulence of wheat aphid, and every processing repeats 3 times, uses LC ₅₀Value is pressed the abundant method of Sun Yun and is calculated co-toxicity coefficient:

Table 2 alpha-cypermethrin and flonicamid compound synergic Pesticidal combination are to toxicity test and the co-toxicity coefficient of wheat aphid

As can be seen from Table 2, alpha-cypermethrin and flonicamid are composite to have synergistic effect to wheat aphid, 3 listed in table ratio co-toxicity coefficients are all greater than 120, and wherein co-toxicity coefficient was maximum as 5: 1 o'clock take flonicamid and alpha-cypermethrin ratio, was 175.52.

Embodiment 2:

Take by weighing 12g alpha-cypermethrin, 13g flonicamid, calcium dodecyl benzene sulfonate 4g, phenethyl phenol polyethenoxy ether 3g, solvent naphtha to 100g, the method that above raw material is prepared missible oil routinely drops in the mixing kettle mixes, and forms preparation 25% alpha-cypermethrin flonicamid missible oil.

Adopt 2 sample product of embodiment to carry out the field trial of control in field Brown Planthopper, the contrast medicament is 25% alpha-cypermethrin WP and 25% flonicamid EW, and concrete consumption sees Table 3, every mu of water consumption is 30kg, looks into 7 days behind the medicine 3 days, 14 days, 28 days results, result of the test sees Table 3:

Table 3 example 2 samples are to the field test results of Brown Planthopper

2 pairs of Brown Planthoppers of example have fabulous quick-acting as can be seen from Table 3, and the lasting period is long, in the field performance well, are the outstanding medicaments of control Brown Planthopper.

Adopt 2 sample product of embodiment to carry out the field trial of control in field wheat aphid, the contrast medicament is 25% alpha-cypermethrin and 25% flonicamid EW, and concrete consumption sees Table 3, every mu of water consumption is 30kg, looks into 7 days behind the medicine 3 days, 14 days, 28 days results, result of the test sees Table 4:

Table 4 example 2 samples are to the field test results of wheat aphid

2 pairs of wheat aphids of example have fabulous quick-acting as can be seen from Table 4, and the lasting period is long, in the field performance well, are the outstanding medicaments of control wheat aphid.

Embodiment 3:

Take by weighing 1g alpha-cypermethrin, 10g flonicamid, phenethyl phenol polyethenoxy ether 8g, calcium dodecyl benzene sulfonate 10g, solvent naphtha to 100g, the method that above raw material is prepared missible oil routinely drops in the mixing kettle mixes, and forms alpha-cypermethrin flonicamid missible oil.

Embodiment 4:

Take by weighing 2g alpha-cypermethrin, 20g flonicamid, nonyl phenol phosphate 5g, emulsifier 600 #4g, n-butanol 3g, the solvent naphtha of 30g and the pyrrolidones of 20g, the xanthans of 0.1g, all the other waters complement to 100g, former medicine, solvent, emulsifier, cosolvent mix and blend form oil phase, and n-butanol and water-soluble solution form water, slowly water are added in the oil phase under the clipper effect and go, and continue to shear 10～30 minutes, form 22% alpha-cypermethrin flonicamid aqueous emulsion.

Embodiment 5:

Take by weighing 40g alpha-cypermethrin, 40g flonicamid, naphthalene sulfonate 2g, lignin 8g, add to 100g with kaolin, above raw material is mixed in micronizer, form 80% alpha-cypermethrin flonicamid wetting powder.

Embodiment 6:

Take by weighing 2g alpha-cypermethrin, 10g flonicamid, calcium dodecyl benzene sulfonate 5g, emulsifier 600 #4g, the pyrrolidones of 30g solvent naphtha and 15g, all the other waters complement to 100g, former medicine, solvent, emulsifier, cosolvent mix and blend form homogeneous phase transparent solution, then slowly add entry and stir the formation clear solution, be 12% alpha-cypermethrin flonicamid microemulsion.

Embodiment 7:

Take by weighing 45g alpha-cypermethrin, 20g flonicamid, lignosulfonates 2g, polyoxyethylene poly-oxygen propylene aether and sulphate 4g thereof, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, water is supplied 100g, forms 65% alpha-cypermethrin flonicamid suspending agent under the effect of sand mill.

Embodiment 8:

Take by weighing 0.5g alpha-cypermethrin, 0.5g flonicamid, calcium dodecyl benzene sulfonate 4g, phenethyl phenol polyethenoxy ether 3g, solvent naphtha to 100g.The method that above raw material is prepared missible oil routinely drops in the mixing kettle mixes, and forms preparation 1% alpha-cypermethrin-flonicamid missible oil.

Embodiment 9:

Take by weighing 5g alpha-cypermethrin, 45g flonicamid, the 8g of wooden sodium sulfonate, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, kaolin is supplied 100g, and above raw material is formed 50% alpha-cypermethrin flonicamid water dispersible granules by the method for water dispersion granule.

Embodiment 10:

Take by weighing 20g alpha-cypermethrin, 30g flonicamid, emulsifier 600 #14g, phenethyl phenol polyethenoxy ether 15g, solvent naphtha to 100g, the method that above raw material is prepared missible oil routinely drops in the mixing kettle mixes, and forms 50% alpha-cypermethrin flonicamid missible oil.

Embodiment 11:

Take by weighing 40g alpha-cypermethrin, 25g flonicamid, emulsifier 600 #14g, phenethyl phenol polyethenoxy ether 15g, solvent naphtha to 100g, the method that above raw material is prepared missible oil routinely drops in the mixing kettle mixes, and forms 65% alpha-cypermethrin flonicamid missible oil.

Claims

1. Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid, it is characterized in that this Synergistic insecticidal compositions is take alpha-cypermethrin and flonicamid as main active ingredient, wherein, the weight ratio of alpha-cypermethrin and flonicamid is 0.1～70: 0.1～80.

2. the Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid according to claim 1 is characterized in that the alpha-cypermethrin of this Synergistic insecticidal compositions and the weight ratio of flonicamid are 0.5～50: 0.5～60.

3. the Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid according to claim 2 is characterized in that the alpha-cypermethrin of this Synergistic insecticidal compositions and the weight ratio of flonicamid are 1～40: 10～50.

4. the Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid according to claim 1 is characterized in that the two weight percentage that accounts for composition of alpha-cypermethrin and flonicamid is 1～80%.

5. the Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid according to claim 4 is characterized in that the two weight percentage that accounts for composition of alpha-cypermethrin and flonicamid is 4～60%.

6. the Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid according to claim 1 is characterized in that it take alpha-cypermethrin and flonicamid as main active ingredient and insecticides adjuvant, excipients are mixed with any one formulation that allows on the agricultural chemicals.

7. the Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid according to claim 6 is characterized in that described formulation is missible oil, suspending agent, aqueous emulsion, wetting powder, microemulsion or water dispersion granule.

8. the Synergistic insecticidal compositions that contains alpha-cypermethrin and flonicamid claimed in claim 1 is prevented and treated the application on the insecticidal materials of resistance homoptera pest in preparation.

9. the application of Synergistic insecticidal compositions in the insecticidal materials of preparation control water rice hopper, Bemisia tabaci and aphid that contains Nitenpyram and pyridalyl claimed in claim 1.